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Schweitzer Engineering Laboratories SEL-351R Instruction Manual Download Page 574

F-6 

Setting Negative-Sequence Overcurrent Elements 

Date Code 20020215 

 

SEL-351R Instruction Manual 

 

Figure F.5:  Negative-Sequence Overcurrent Element Derived From “Equivalent” Phase 

Overcurrent Element, 51EP 

(

)

A

520

A

300

3

pickup

:

QF

51

=

⋅

=

 

Having achieved coordination between the feeder relay negative-sequence overcurrent element 
(51QF) and the downstream line recloser phase overcurrent element (51R) for phase-to-phase 
faults, coordination between the two devices for other fault types is also achieved. 

Negative-Sequence Overcurrent Element Applied at a Distribution Bus (Guideline 5) 

The preceding example was for a distribution feeder.  A negative-sequence overcurrent element 
protecting a distribution bus provides an even more dramatic improvement in phase-to-phase 
fault sensitivity. 

The distribution bus phase overcurrent element pickup must be set above the combined load of 
all the feeders on the bus, plus any emergency load conditions.  The bus phase overcurrent 
element pickup is often set at least four times greater than the pickup of the feeder phase 
overcurrent element it backs up.  Thus, sensitivity to both bus and feeder phase faults is greatly 
reduced.  Feeder relay backup by the bus relay is limited. 

Negative-sequence overcurrent elements at the distribution bus can be set significantly below 
distribution bus load levels and provide dramatically increased sensitivity to phase-to-phase 
faults.  It is coordinated with the distribution feeder phase or negative-sequence overcurrent 
elements and provides more-sensitive and faster phase-to-phase fault backup. 

Summary of Contents for SEL-351R

Page 1: ...UCTION MANUAL IMPORTANT Use this manual in conjunction with the SEL 351R Quick Start Installation and User s Guide SCHWEITZER ENGINEERING LABORATORIES 2350 NE HOPKINS COURT PULLMAN WA USA 99163 5603 TEL 509 332 1890 FAX 509 332 7990 ...

Page 2: ...e passe par défaut A l installation les mots de passe par défaut devront être changés pour des mots de passe confidentiels Dans le cas contraire un accès non autorisé à l équipement pourrait être possible SEL décline toute responsabilité pour tout dommage résultant de cet accès non autorisé The software firmware schematic drawings relay commands and relay messages are copyright protected by the Un...

Page 3: ...tire manual with post script fonts Section 1 Added the setting Phantom voltages from VA VB VC VAB VBC VCA OFF to Table 1 1 Section 7 Increased the number of local latch and remote bits and display points to 16 for SEL 351R 2 Added description of new SELOGIC counter feature Section 8 Added description of how the relay generates phantom voltages Section 9 Included Relay Word bits for additional loca...

Page 4: ...revision includes the following changes Reissued entire manual Replaced Standard Product Warranty page with warranty statement on cover page Section 1 Discussed defeating three second delay on LOCK operator control Figure 1 38 Discussed changes to front panel AC SUPPLY LED settings in Reclose Supervision Logic subsection and made LED11 logic settings change in Figure 1 51 Section 2 Added caution n...

Page 5: ...0 to 300 V secondary on Setting Sheets page 7 and page 8 Added ac setting choice to optoisolated input timers on Setting Sheets page 18 Added Y1 and N1 settings options and explanation for setting RSTLED on Setting Sheets page 19 for defeating the three second delay on the LOCK operator control Added PROTO DNPE and AUTO DTA settings choices to the Port Settings Sheet page 23 Section 10 Added DTA2 ...

Page 6: ...vision includes the following changes Reissued entire manual Section 3 Clarified the operation of the synchronism check elements for breaker close time setting TCLOSD 0 00 in the Synchronism Check Elements subsection see Figure 3 25 Section 5 Added explanation to the target LEDs information near the end of the section that the target LEDs no longer reset if a TRIP condition is present Section 9 Se...

Page 7: ...tor subsection in Section 8 Breaker Recloser Monitor Battery System Monitor and Load Profile Functions Section 3 Added explanation to the Synchronism Check Elements subsection for the new angle setting option for the SYNCP synchronizing phase setting Synchronism check can now be accomplished for synchronism check voltage input VS connected phase phase or beyond a delta wye transformer Setting SYNC...

Page 8: ...bove Min trip ground level for the drive to lockout logic 51N1 and 51N2 don t have the built in 2 cycle delay that 50N6 has thus 51N1 and 51N2 are useful indication for instantaneous trips Changed logic in Figure 1 54 to allow time overcurrent pickups 51N1 and 51N2 to indicate ground current above Min trip ground level for the fault type trip target LED G Section 3 Changed routing of Directional C...

Page 9: ...part of the 2 seconds per screen rotation Section 12 Corrected references to the number of available event reports depending on the length of event report format chosen 15 or 30 cycles twenty eight 15 cycle event reports or fourteen 30 cycle event reports Appendix F Changed Figure F 1 to reflect the built in minimum response time feature of the 51QT negative sequence time overcurrent element Appen...

Page 10: ...s and Commands it remains at 6 5 Ah This is a conservative setting for the new 8 0 Ah batteries The user can change the Battery Amp hours setting to 8 0 Ah if desired 981203 This revision includes the following changes Corrected Figure 1 22 in Section 1 Factory Set Logic SELOGIC Control Equations torque control settings can no longer be set directly to logical 0 as explained in the overcurrent ele...

Page 11: ...Section 6 Updated Figure 6 1 Section 12 Corrected typographical error on page 12 4 reissued entire section 981021 This revision includes the following changes New factory default SELOGIC Control Equation setting 79RIS 52A 79CY reclose initiate supervision explained in Section 6 Close and Reclose Logic SELOGIC Control Equation setting FAULT now momentarily suspends demand metering updating and peak...

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Page 13: ...LOAD PROFILE FUNCTIONS SECTION 9 SETTING THE SEL 351R RECLOSER CONTROL SECTION 10 SERIAL PORT COMMUNICATIONS AND COMMANDS SECTION 11 ADDITIONAL FRONT PANEL INTERFACE DETAILS SECTION 12 STANDARD EVENT REPORTS AND SER SECTION 13 TESTING AND TROUBLESHOOTING SECTION 14 APPENDICES Appendix A Firmware Versions Appendix B Firmware Upgrade Instructions Appendix C SEL Distributed Port Switch Protocol Appen...

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Page 15: ...nd and SEF Elements 1 11 Fast Curve Operation Logic 1 11 Fast Curve Operation When Reclosing Is Defeated 1 12 Operations to Lockout Activate High Current Trip and Activate High Current Lockout Logic 1 14 High Current Trip Operation When Reclosing Is Defeated 1 15 Overcurrent Element Enable Disable Logic 1 20 Trip Logic 1 22 Close Logic 1 23 Close Conditions Other Than Auto Reclosing 1 23 Unlatch C...

Page 16: ... ENABLED Operator Control 1 49 AUX 1 and AUX 2 Operator Controls 1 49 Example Application for the AUX 1 Operator Control Hot Line Tag 1 50 ALTERNATE SETTINGS Operator Control 1 52 LOCK Operator Control 1 53 Front Panel Status and Trip Target LEDs 1 53 TABLES Table 1 1 Correspondence Between EZ Settings and Regular Settings 1 2 Table 1 2 Overcurrent Element Functions With EZ Settings Operative 1 4 ...

Page 17: ...allation With Separate 120 Vac Power and Three Phase Voltage 1 36 Figure 1 33 Installation With Separate 120 Vac Power Three Phase and Synchronism Check Voltage 1 36 Figure 1 34 Installation With Only Three Phase Voltage 120 Vac power provided by three phase voltage 1 37 Figure 1 35 Operator Controls GROUND ENABLED Through LOCK 1 41 Figure 1 36 Operator Controls AUX 1 Through TRIP 1 41 Figure 1 37...

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Page 19: ...ied in nonstandard applications e g at a cogeneration interconnection point changes would probably be made to the factory set logic Section 9 Setting the SEL 351R Recloser Control provides details on making settings changes EZ Settings vs Regular Settings The Settings section in the SEL 351R Quick Start Installation and User s Guide describes EZ recloser control settings set with SET EZ n command ...

Page 20: ...curve EM reset ground fast curve 51G1C 51N1C 51G1TD 51N1TD 51G1RS 51N1RS Delay curve phase Time dial phase delay curve EM reset phase delay curve 51P2C 51P2TD 51P2RS Delay curve ground Time dial ground delay curve EM reset ground delay curve 51G2C 51N2C 51G2TD 51N2TD 51G2RS 51N2RS Time delay SEF 67N3D Operations phase fast curve Operations ground fast curve Operations to lockout phase Operations t...

Page 21: ...ent trip phase Time delay phase high current trip Activate high current trip phase 50P2P 67P2D HITRPH High current trip ground Y N High current trip ground Time delay ground high current trip Activate high current trip ground 50G2P 50N2P 67G2D 67N2D HITRGR High current lockout phase Y N High current lockout phase Activate high current lockout phase 50P1P HILKPH High current lockout ground Y N High...

Page 22: ...n while asleep Y N ON12V 12VSLP Overcurrent Element Functions Overview When the factory default EZ settings are active for a particular settings group many of the overcurrent elements in that settings group have specific functions as explained in Table 1 2 Table 1 2 Overcurrent Element Functions With EZ Settings Operative Overcurrent Element Function With EZ Settings Operative Associated Settings ...

Page 23: ...ent returning below the normal Min trip SEF level when cold load pickup scheme is active 50N4P 50A4 50B4 50C4 Threshold set equal to Min trip phase to detect faulted phases for trip operation counters 50P4P The overcurrent elements are available for use in SELOGIC control equations as Relay Word bits see Tables 9 3 and 9 4 The associated overcurrent element settings listed in Table 1 2 and SELOGIC...

Page 24: ...y residual ground overcurrent element 51G1T This is taken care of automatically when EZ settings are made See Figure 1 15 and Figure 1 19 for more details on the operation of the Fast curve ground element COLD LOAD PICKUP SCHEME The cold load pickup scheme activates to prevent tripping on cold load pickup current Both the following occur when the cold load pickup scheme activates Fast curves are d...

Page 25: ...ersity top and Restore Min Trips bottom Logic for Cold Load Pickup Scheme Start Loss of Load Diversity Timer Loss of load diversity timer SV6PU in Figure 1 1 starts timing when both the following conditions are true Recloser is open Relay Word bit 52A logical 0 SEL351R is in the lockout state Relay Word bit 79LO logical 1 or the reclosing relay is defeated EZ setting Reclose interval 1 0 SET EZ co...

Page 26: ... is the qualifiying time for cold load pickup phase current below normal Min trip phase SV8 cold load pickup scheme actively engaged for phase elements SV7 PU 0 Loss of load diversity Restore min trips Restore min trips scheme enabled for phase elements Cold load pickup scheme enabled for phase elements Phase current above normal Min trip phase Cold load pickup phase current below normal Min trip ...

Page 27: ...is the qualifying time for cold load pickup ground current below normal Min trip ground Figure 1 3 Cold Load Pickup Scheme Seal In Logic for Ground Overcurrent Elements SELOGIC Setting and Relay Word Bit SV12 cold load pickup scheme actively engaged for SEF element SV11 PU 0 Loss of load diversity Restore min trips Restore min trips scheme enabled for SEF element Cold load pickup scheme enabled fo...

Page 28: ... pickup phase With Relay Word bit SV8 logical 1 SELOGIC setting 51P2TC enables Delay curve phase 51P2T when phase current exceeds pickup setting 50P5P Desensitize Delay Curve Maintain Coordination Phase Elements Example In Figure 1 5 the normal Min trip phase for Delay curve phase 51P2T is 51P2P When the cold load pickup scheme is actively engaged for phase elements the effective Min trip phase fo...

Page 29: ...output SV5T then propagates to Figure 1 2 and unlatches SV8 if setting Restore Min trip phase Y Relay Word bit RPP logical 1 This disengages the cold load pickup scheme for the phase elements Other Cold Load Pickup Scheme Details Involving Ground and SEF Elements The logic in Figure 1 3 and Figure 1 4 operates similarly to the logic operating in Figure 1 2 which has just been examined A few detail...

Page 30: ...p 3rd reclose 4th trip lockout Per Table 1 3 SH0 logical 1 during the first trip SH1 logical 1 during the second trip and so forth Therefore to enable Fast curve phase for the first and second trip operations make EZ setting Operations phase fast curve 2 OPGR 2 see Figure 1 6 This causes Relay Word bit OCG to assert to logical 1 for both the following conditions shot 0 SH0 logical 1 shot 1 SH1 log...

Page 31: ...H1 OCP Relay Word bit Relay Word bits OPPH 2 OPPH 3 OPPH 4 OPPH 5 OPPH 1 Operations phase fast curve setting Used in the torque control SELOGIC setting 51P1TC to enable disable phase overcurrent element 51P1T see Figure 1 15 SH0 OPPH OFF 79RS 79CY 79LO Figure 1 6 Operations Phase Fast Curve Logic ...

Page 32: ...h Figure 1 14 Relay Word bits SH0 through SH4 assert during different periods of a reclose cycle as the shot reclose counter increments The shot counter increments just before each reclose See Table 1 3 and accompanying note An example reclose cycle from reset to lockout appears as reset 1st trip 1st reclose 2nd trip 2nd reclose 3rd trip 3rd reclose 4th trip lockout Per Table 1 3 SH0 logical 1 dur...

Page 33: ...closing Is Defeated If reclosing is defeated via setting e g all Operations to lockout 1 then all the following reclosing related Relay Word bits default to logical 0 the reclosing relay is nonexistent SH0 SH1 SH2 SH3 SH4 shot counter states 79RS 79CY 79LO reclosing relay states The logic at the top of Figure 1 11 and Figure 1 12 enables set phase and ground high current trips respectively when re...

Page 34: ...he following SELOGIC settings to realize drive to lockout conditions SV15 SV16 see Figure 1 24 Figure 1 9 Operations to Lockout Ground Logic DWG M351R060 SH4 SH3 SH2 SH1 SH0 Relay Word bits OPLKSF 1 Operations to lockout SEF setting OPLKSF 2 OPLKSF 3 OPLKSF 4 OPLKSF 5 Used in the following SELOGIC setting to realize a drive to lockout condition 79DTL see Figure 1 25 OLS Relay Word bit Figure 1 10 ...

Page 35: ...y Word bit HITRPH 1 Activate high current trip phase setting HITRPH 2 HITRPH 3 HITRPH 4 HITRPH 5 Used in the torque control SELOGIC setting 67P2TC to enable disable phase overcurrent element 67P2T see Figure 1 17 Relay Word bits HITRPH OFF 79RS 79CY 79LO SH0 Figure 1 11 Activate High Current Trip Phase Logic ...

Page 36: ...e high current trip ground setting HITRGR 2 HITRGR 3 HITRGR 4 HITRGR 5 Used in the torque control SELOGIC setting 67N2TC and 67G2TC to enable disable phase overcurrent elements 67N2T neutral and 67G2T residual respectively see Figure 1 17 Relay Word bits HITRGR OFF 79RS 79CY 79LO SH0 Figure 1 12 Activate High Current Trip Ground Logic ...

Page 37: ...isable phase overcurrent element 67P1 see Figure 1 17 Figure 1 13 Activate High Current Lockout Phase Logic DWG M351R065 SH4 SH3 SH2 SH1 SH0 Relay Word bits HILKGR 1 Activate high current lockout ground setting HILKGR 2 HILKGR 3 HILKGR 4 HILKGR 5 Used in the torque control SELOGIC settings 67N1TC and 67G1TC to enable disable ground overcurrent elements 67N1 neutral and 67G1 residual respectively s...

Page 38: ... load pickup scheme is actively engaged similar to Figure 1 5 Otherwise 50G5 provides the effective Min trip ground for Delay curve ground when the cold load pickup scheme is actively engaged 50N5 is turned off automatically See Figure 1 18 The SEF element is enabled only if none of the Fast curve and Delay curve elements are picked up and timing If the SEF element is used it is traditionally set ...

Page 39: ...ase operates on cold load phase min trip SV8 50P5 Delay curve ground operates on cold load ground min trip Figure 1 16 Delay Curve Phase top and Delay Curve Ground bottom Enable Disable Logic Enable high current trip ground see Figure 1 12 GROUND ENABLED operator control ON see Figure 1 41 67N2TC Torque Control SELOGIC Settings 67P2TC DWG M351R081 Relay Word Bits HTG LT1 67G2TC Input into 67N2T lo...

Page 40: ...ments in Figure 1 19 are controlled by the logic in Figure 1 15 through Figure 1 18 Other trip logic details If setting Min trip ground is set below 0 1 Amp secondary 51N1T and 51N2T operate as Fast curve ground and Delay curve ground respectively 51G1T and 51G2T are turned off automatically Otherwise 51G1T and 51G2T operate as Fast curve ground and Delay curve ground respectively 51N1T and 51N2T ...

Page 41: ...osing CLOSE operator control local Serial port CLOSE command remote Supervision of these local and remote close signals is provided by LOCK operator control supervises CLOSE operator control only Hot line tag supervises CLOSE operator control and serial port CLOSE command Other close logic details in Figure 1 20 are listed below The LOCK operator control also supervises other front panel operator ...

Page 42: ...nd is timing to a pending close the corresponding RECLOSER CLOSED LED flashes as a timing indication Besides unlatching the close signal output the unlatch close SELOGIC setting ULCL also prevents the CLOSE operator control from starting to time to a pending close The logic in the bottom half of Figure 1 21 is set primarily with the task in mind of keeping the RECLOSER CLOSED LED from flashing by ...

Page 43: ...en hot line tag is ON or LOCK operator control in ON see Figure 1 39 DWG M351R079 Relay Word Bits TRIP PINF SW1 LT7 CLOSE LT4 CLOSE CC 79CY Figure 1 21 Unlatch Close Conditions Figure 1 22 shows the logic for recloser status determination SELOGIC setting 52A includes the CLOSE Relay Word bit to hold off the change of state of 52A until the unlatch close logic see Figure 1 21 unlatches the close si...

Page 44: ...ockout The logic for the operations to lockout settings for phase ground and SEF elements is found in preceding Figure 1 8 through Figure 1 10 The output of this logic Relay Word bits OLP OLG and OLS is used in the drive to lockout logic in Figure 1 24 and top of Figure 1 25 The SEL 351R is driven to lockout if all the following are true The number of trip operations is greater than or equal to se...

Page 45: ...ents is found in preceding Figure 1 17 The resultant High current lockout phase and High current lockout ground elements are used in the drive to lockout logic in Figure 1 25 If phase or ground fault current exceeds the pickups of either of these respective High current lockout phase and High current lockout ground elements when the SEL 351R trips the SEL 351R is driven to lockout If setting High ...

Page 46: ...al SELOGIC Settings and Relay Word Bits SV13 any overcurrent trip except SEF 51N1T 51G2T 51N2T 67P2T 67G2T 67N2T 51G1T 51P2T 51P1T Relay Word Bits SV14 ground current above min trip ground DWG M351R023 50G6 50N6 51N1 51N2 Figure 1 23 Drive to Lockout Logic Part 1 of 3 ...

Page 47: ...ater than or equal to the number of set operations to lockout ground see Figure 1 9 phase current above min trip phase see Figure 3 2 any overcurrent trip except SEF see Figure 1 23 SELOGIC Settings and Relay Word Bit SV15 rising edge detect SV16 drive to lockout conditions derived from operations to lockout conditions number of operations is greater than or equal to the number of set operations t...

Page 48: ...ckout conditions see Figure 1 24 67N3T OLS 67P1 67G1 67N1 TRIP 52A LT2 LT7 PB9 OC SV16 Relay Word Bits Underfrequency element see Figure 3 28 81D1T Figure 1 25 Drive to Lockout Logic Part 3 of 3 BLOCK RESET TIMING See Figure 1 26 If any of the fast curves delay curves or SEF elements are picked up and timing reset timing is blocked Reset timing is also blocked if tripping is in progress After bloc...

Page 49: ...igure 1 27 Sequence Coordination Logic Refer to the example in Figure 1 28 The sequence coordination logic in Figure 1 27 keeps SEL 351R 1 from overtripping for a fault beyond SEL 351R 2 Refer to Figure 1 29 The following are factory settings for SEL 351R 1 79SEQ 79RS 51P1 51G1 51N1 SEQC see Figure 1 27 51P1TC SV8 OCP see Figure 1 2 and Figure 1 15 Presuming the cold load pickup scheme is not acti...

Page 50: ...t counter at shot 2 as shown in Figure 1 29 Other sequence coordination details involving ground elements If setting Min trip ground is set below 0 1 Amp secondary 51N1 provides the indication that the ground fault current is above the normal Min trip ground setting value and the Fast curve ground is picked up 51G1 is turned off automatically Otherwise 51G1 provides the indication 51N1 is turned o...

Page 51: ...SION LOGIC See Figure 1 30 After a reclose interval times out a final check is made of the reclose supervision logic before the SEL 351R auto recloses the recloser For auto reclosing to proceed both following conditions must be met Healthy battery Present close power After a reclose interval times out the logic in Figure 1 30 is final checked for a time period equivalent to EZ setting Close power ...

Page 52: ... more information Present Close Power The power to close the main contacts and compress the tripping springs in the recloser is usually either of the following 120 Vac Primary voltage depending on recloser construction If this close power is 120 Vac it is usually paralleled off the SEL 351R terminal block for convenience see Figure 7 in the Installation section in the SEL 351R Quick Start Installa...

Page 53: ... is changed from previous factory setting LED11 59A1 voltage input VA energized to LED11 DISCHG NOT DISCHG the battery is not discharging If the battery is not discharging it is either charging disconnected or otherwise damaged The SEL 351R relay module gets its power to run from either Incoming 120 Vac power pins 8 4 on POWER connector J6 or 24 Vdc battery pins 6 2 on POWER connector J6 If neithe...

Page 54: ...recloser is equipped Control Cable 120 Vac Power Figure 1 32 Installation With Separate 120 Vac Power and Three Phase Voltage DWG M351R092 R E C L O S E R SEL 351R 120 Vac Power VS VC VB VA 1 3 Source Load 120 Vac Close Power if recloser is equipped Control Cable 120 Vac Power 1 Figure 1 33 Installation With Separate 120 Vac Power Three Phase and Synchronism Check Voltage ...

Page 55: ...ation and User s Guide 120 Vac Close Power Voltage input VA provides direct 120 Vac close power monitoring it is in parallel with the incoming 120 Vac power The close power part of the factory set logic in Figure 1 30 79CLS 59A1 is configured to work optimally with this scenario in Figure 1 31 Voltage element 59A1 picks up when nominal 120 Vac is applied to voltage input VA Primary Voltage Close P...

Page 56: ...A VB and VC are connected and can provide indirect but phase specific primary voltage close power monitoring For example if primary voltage close power for the recloser comes from phases B and C phase to phase change the close power part of the factory set logic in Figure 1 30 from 79CLS 59A1 for voltage input VA to 79CLS 59BC for voltage inputs VB and VC with the SET L n command n setting group n...

Page 57: ...spectively Primary Voltage Close Power All three voltage inputs VA VB and VC are connected and can provide indirect but phase specific primary voltage close power monitoring For example if primary voltage close power for the recloser comes from phases B and C phase to phase change the close power part of the factory set logic in Figure 1 30 from 79CLS 59A1 for voltage input VA to 79CLS 59BC for vo...

Page 58: ...C for voltage inputs VB and VC with the SET L n command n setting group number Set pickup setting 59PP for voltage element 59BC to some percentage e g 87 of the nominal phase to phase voltage secondary value of the three phase voltage with the SET n command n setting group number Voltage element 59BC picks up when nominal voltage is applied to voltage inputs VB and VC OPERATOR CONTROL LOGIC See Op...

Page 59: ...ay Word Bit Output SELOGIC Factory Setting Detailed Operator Control Pushbutton Output Corresponding LED Operation and Logic Application PB6 LED6 0 always extinguished from factory PB7 LED7 0 always extinguished from factory PB8 LED8 52A PB9 LED9 52A PINBD NOT 52A PINBD Similar to Figure 1 37 Figure 1 45 Similar to Figure 1 37 Figure 1 46 Figure 1 39 Figure 1 20 Figure 1 40 Figure 1 19 Time Delays...

Page 60: ...y to the above detailed GROUND ENABLED operator control pushbutton and corresponding Relay Word bit PB1 Pulses to logical 1 for one processing interval 1 4 cycle DWG M351R076 Figure 1 37 GROUND ENABLED Operator Control Pushbutton Output Other Operator Control Pushbutton Outputs Operate Similarly to GROUND ENABLED The following operator control pushbutton outputs operate similarly to the GROUND ENA...

Page 61: ...lashing indicates a pending pulsing of Relay Word Bit PB5 regardless of the setting of corresponding SELOGIC Control Equation setting LED5 If the LOCK operator control pushbutton is released before 3 seconds the corresponding LED stops flashing and Relay Word Bit PB5 is not pulsed The LED returns to its regular operation per SELOGIC Control Equation setting LED5 see Figure 1 50 DWG M351R073 Figure...

Page 62: ...e bottom of the SEL 351R both RECLOSER CLOSED and RECLOSER OPEN LEDs extinguish even if the recloser is open This occurs even for the RECLOSER OPEN LED because of SELOGIC setting LED9 52A PINBD See Figure 7 30 monitored trip circuit point PINBD should always be energized by the 24 Vdc anytime the recloser is open SW1 52a is open If PINBD is not energized PINBD logical 0 and the recloser is open th...

Page 63: ... timing the RECLOSER CLOSED LED stops flashing PB8D stops timing and Relay Word Bit PB8 is not pulsed The pending close operation is aborted The RECLOSER CLOSED LED returns to its regular operation per SELOGIC Control Equation setting LED8 see Figure 1 36 If time delay setting PB8D is set PB8D 0 then the assertion of SELOGIC setting ULCL unlatch close to logical 1 also aborts pending closes and pr...

Page 64: ...B9D 0 no time delay then Relay Word Bit PB9 functions in a manner similar to Figure 1 37 Pulses to logical 1 for one processing interval 1 4 cycle DWG M351R075 Figure 1 40 TRIP Operator Control Pushbutton Output Corresponding Operator Control LEDs and Logic Applications Figure 1 35 and Figure 1 36 list corresponding figures that detail operator control LED operation and logic applications Note tha...

Page 65: ...enable or disable ground overcurrent elements SELOGIC settings SET1 set reset Relay Word Bits PB1 Relay Word Bit LT1 RST1 DWG M351R055 GROUND ENABLED operator control LED setting LED1 LT1 GROUND ENABLED operator control pushbutton pulsed output see Figure 1 37 LT1 is used in the following SELOGIC settings to enable disable ground overcurrent elements 67N1TC 67N2TC 67N3TC 51N1TC 51N2TC torque contr...

Page 66: ...ated RST2 LT2 is used in the 79DTL drive to lockout SELOGIC setting See Figure 1 25 Figure 1 42 RECLOSE ENABLED Operator Control LED and Logic Application REMOTE ENABLED Operator Control As stated in Figure 1 43 REMOTE ENABLED latch LT3 is not used in any of the factory set logic Each press of the REMOTE ENABLED operator control pushbutton toggles latch LT3 from LT3 logical 0 to LT3 logical 1 and ...

Page 67: ...o enable disable ground overcurrent protection LT3 REMOTE ENABLED operator control ON see Figure 1 43 Relay Word Bits PB1 GROUND ENABLED operator control pushbutton pulsed output see Figure 1 37 Rising edge detect LT4 LOCK operator control OFF see Figure 1 50 GROUND ENABLED operator control ON by local or remote means LT1 logical 1 Local Remote Figure 1 44 Example REMOTE ENABLED Operator Control A...

Page 68: ...ENABLED Figure 1 46 AUX 2 Figure 1 43 REMOTE ENABLED Figure 1 50 LOCK However these operator control pushbuttons can be used without the reserved latches if desired For example the AUX 1 operator control pushbutton output is embedded into latch LT5 in the factory settings However the AUX 1 operator control pushbutton output PB6 can be used independent of latch LT5 latch LT5 can reprogrammed for an...

Page 69: ... on to latch LT7 The corresponding AUX 1 LED SELOGIC setting LED6 LT7 is programmed to follow the front panel HOT LINE TAG LED SELOGIC setting LED13 LT7 Thus the AUX 1 LED displays the status of the hot line tag not of a latch reserved specifically for the AUX 1 operator control Input IN102 is not supervised in this example A SCADA contact pulses input IN102 to set reset hot line tag remotely SELO...

Page 70: ...ing group Each time the ALTERNATE SETTINGS operator control pushbutton is momentarily pressed the active setting group switches between Setting group 2 as the active setting group ALTERNATE SETTINGS operator control LED illuminates And setting group 1 as the active setting group ALTERNATE SETTINGS operator control LED extinguishes Neither SELOGIC setting SS1 nor SS2 has to be maintained at logical...

Page 71: ...ical 0 or OFF LED is extinguished LT4 logical 1 Supervises most of the other operator controls as listed at the bottom of Figure 1 50 SELOGIC settings SET4 set reset Relay Word Bit PB5 Relay Word Bit LT4 RST4 DWG M351R061 LOCK operator control LED setting LED5 LT4 NOT LT4 LOCK operator control pushbutton pulsed output see Figure 1 38 LT4 is used in the following SELOGIC settings to supervise the o...

Page 72: ... as a status LED For example when LED11L Y N N and LED11 DISCHG The AC SUPPLY LED illuminates when Relay Word bit DISCHG deasserts to logical 0 regardless of any trip condition If LEDnL Y N Y LED operates as a trip target LED For example when LED17L Y N Y and LED17 81D1T The 81 underfrequency trip LED illuminates when Relay Word bit 81D1T is asserted to logical 1 and a rising edge of TRIP occurs T...

Page 73: ...Equation Setting Trip Latch LED Y N LED15L Y LED15 51P1T 51G1T 51N1T LED17 81D1T LED17L Y DWG M351R019 LED16L Y LED16 67P2T 67G2T 67N2T Figure 1 52 Front Panel Trip Target LEDs CYCLE LOCKOUT DWG M351R020 RESET CONTROL STATE LED19 79CY LED18 79RS LED20 79LO LED19L N LED18L N LED20L N Trip Latch LED Y N SELOGIC Control Equation Setting Figure 1 53 Front Panel Reclosing Relay Status LEDs B C DWG M351...

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Page 75: ...ABLES Table 2 1 Output Contact Jumpers and Corresponding Output Contacts 2 2 Table 2 2 Extra Alarm Output Contact and Corresponding Controlling Jumper 2 2 Table 2 3 Required Position of Jumper JMP23 for Desired Output Contact OUT107 Operation 2 3 Table 2 4 Password and Breaker Jumper Positions for Standard Relay Shipments 2 3 Table 2 5 Password and Breaker Jumper Operation 2 3 Table 2 6 EIA 232 Se...

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Page 77: ...ACTS ORDERING OPTION 6 2 7 3 8 4 Control Power Supply 1 2 4 3 5 6 Not Connected 24 Vdc Power Supply 120 Vac 24 Vdc DB9 WAKE UP PORT SIDE Monitored Close Circuit Points HV FET Trip HV FET Close Monitored Trip Circuit Points IRIG B 1 2 3 4 5 6 7 8 press for 3 sec LOCK AUX 1 AUX 2 GROUND RECLOSE ENABLED WAKE UP RECLOSER CLOSED ENABLED ENABLED REMOTE CLOSE SETTINGS ALTERNATE OPEN TRI P RECLOSER FRONT ...

Page 78: ...shipment Refer to corresponding Figure 7 27 for examples of output contact operation for different output contact types Table 2 1 Output Contact Jumpers and Corresponding Output Contacts Output Contact Jumpers Corresponding Output Contacts JMP21 JMP29 but not JMP23 ALARM OUT101 EXTRA ALARM OUTPUT CONTACT CONTROL JUMPER The SEL 351R has a dedicated alarm output contact labeled ALARM see Figure 2 1 ...

Page 79: ...nt the dedicated ALARM output contact comes as a b type output contact and all the other output contacts including the extra alarm come as a type output contacts The output contact type for any output contact can be changed see preceding subsection Output Contact Jumpers Thus the dedicated ALARM output contact and the extra alarm output contact can be configured as the same output contact type if ...

Page 80: ... not connected to Pin 1 on the corresponding EIA 232 serial ports Put the jumpers ON in place so that the 5 Vdc is connected to Pin 1 on the corresponding EIA 232 serial ports Table 2 6 EIA 232 Serial Port Voltage Jumper Positions for Standard Relay Shipments EIA 232 Serial Port 2 rear panel EIA 232 Serial Port 3 rear panel JMP2 OFF JMP1 OFF CLOCK BATTERY Refer to Figure 19 in the Communications s...

Page 81: ...he manufacturer s instructions Remove the battery from beneath the clip and install a new one The positive side of the battery faces up Reassemble the relay as described in the same subsection Set the relay date and time via serial communications port or front panel see the Communications section or Front Panel Interface section of the SEL 351R Quick Start Installation and User s Guide respectivel...

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Page 83: ...Time Overcurrent Elements 3 8 Settings Ranges 3 11 Accuracy 3 11 Pickup and Reset Time Curves 3 11 Residual Ground Instantaneous Definite Time Overcurrent Elements 3 12 Settings Ranges 3 13 Accuracy 3 13 Pickup and Reset Time Curves 3 13 Negative Sequence Instantaneous Definite Time Overcurrent Elements 3 14 Settings Ranges 3 14 Accuracy 3 14 Pickup and Reset Time Curves 3 14 Time Overcurrent Elem...

Page 84: ...3 38 System Rotation Can Affect Setting SYNCP 3 38 Synchronism Check Elements Operation 3 39 Voltage Window 3 39 Other Uses for Voltage Window Elements 3 39 Block Synchronism Check Conditions 3 39 Slip Frequency Calculator 3 40 Angle Difference Calculator 3 40 Voltages VP and VS are Static 3 40 Voltages VP and VS are Slipping 3 41 Angle Difference Example voltages Vp and Vs are slipping 3 42 Synch...

Page 85: ...7 Figure 3 7 Levels 1 through 4 Phase to Phase Instantaneous Overcurrent Elements 3 9 Figure 3 8 Levels 1 through 4 Neutral Ground Instantaneous Definite Time Overcurrent Elements with Directional Control Option 3 10 Figure 3 9 Levels 5 Through 6 Neutral Ground Instantaneous Overcurrent Elements 3 11 Figure 3 10 Levels 1 through 4 Residual Ground Instantaneous Definite Time Overcurrent Elements wi...

Page 86: ...re 3 24 Synchronism Check Voltage Window and Slip Frequency Elements 3 36 Figure 3 25 Synchronism Check Elements 3 37 Figure 3 26 Angle Difference Between VP and VS Compensated by Breaker Close Time fP fS VP shown as reference in this example 3 41 Figure 3 27 Undervoltage Block for Frequency Elements 3 45 Figure 3 28 Levels 1 Through 6 Frequency Elements 3 46 ...

Page 87: ...nt elements are available Two additional levels of phase instantaneous overcurrent elements Levels 5 and 6 are also available The different levels are enabled with the E50P enable setting as shown in Figure 3 1 Figure 3 2 and Figure 3 3 Level 2 element 67P2S in Figure 3 3 is used in directional comparison blocking schemes see Directional Comparison Blocking DCB Logic in Section 5 Trip and Target L...

Page 88: ...3 2 Overcurrent Voltage Synchronism Check and Frequency Elements Date Code 20020215 SEL 351R Instruction Manual Figure 3 1 Levels 1 Through 4 Phase Instantaneous Overcurrent Elements ...

Page 89: ...xample shown 50A1 1 logical 1 if IA pickup setting 50P1P 0 logical 0 if IA pickup setting 50P1P 50B1 1 logical 1 if IB pickup setting 50P1P 0 logical 0 if IB pickup setting 50P1P 50C1 1 logical 1 if IC pickup setting 50P1P 0 logical 0 if IC pickup setting 50P1P 50P1 1 logical 1 if at least one of the Relay Word bits 50A1 50B1 or 50C1 is asserted e g 50B1 1 0 logical 0 if all three Relay Word bits ...

Page 90: ...nt Voltage Synchronism Check and Frequency Elements Date Code 20020215 SEL 351R Instruction Manual Figure 3 3 Levels 1 Through 4 Phase Instantaneous Definite Time Overcurrent Elements with Directional Control Option ...

Page 91: ...is set E32 N then the directional control input from Figure 4 21 Level 1 is asserted to logical 1 continuously Then only the corresponding SELOGIC control equation torque control setting 61P1TC has to be considered in the control of the phase instantaneous definite time overcurrent elements 67P1 67P1T SELOGIC control equation torque control settings are discussed next Torque Control Levels 1 throu...

Page 92: ... Torque Control Settings at the end of Section 4 Loss of Potential Load Encroachment and Directional Element Logic Combined Single Phase Instantaneous Overcurrent Elements The single phase instantaneous overcurrent element Relay Word bit outputs in Figure 3 1 are combined together in Figure 3 4 on a per phase basis producing Relay Word bit outputs 50A 50B and 50C Relay Word bits 50A 50B and 50C ca...

Page 93: ...ickup Setting Pickup Time Cycles Maximum Minimum Figure 3 5 SEL 351R Recloser Control Nondirectional Instantaneous Overcurrent Element Pickup Time Curve 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 1 2 2 3 4 5 6 7 8 9 10 Applied Current Multiples of Pickup Setting Reset Time Cycles Maximum Minimum Figure 3 6 SEL 351R Recloser Control Nondirectional Instantaneous Overcurrent Element Reset Time Curve Phase t...

Page 94: ...g 50PP1P Pickup and Reset Time Curves See Figure 3 5 and Figure 3 6 Neutral Ground Instantaneous Definite Time Overcurrent Elements Four levels of neutral ground instantaneous definite time overcurrent elements are available Two additional levels of neutral ground instantaneous overcurrent elements Levels 5 and 6 are also available The different levels are enabled with the E50N enable setting as s...

Page 95: ...Date Code 20020215 Overcurrent Voltage Synchronism Check and Frequency Elements 3 9 SEL 351R Instruction Manual Figure 3 7 Levels 1 through 4 Phase to Phase Instantaneous Overcurrent Elements ...

Page 96: ...oltage Synchronism Check and Frequency Elements Date Code 20020215 SEL 351R Instruction Manual Figure 3 8 Levels 1 through 4 Neutral Ground Instantaneous Definite Time Overcurrent Elements with Directional Control Option ...

Page 97: ... steps Setting range for definite time setting 67N2SD used in DCB logic 0 00 60 00 cycles in 0 25 cycle steps Note Because channel IN is rated 0 05 A nominal there is an additional 2 cycle time delay on all the neutral ground instantaneous 50N1 50N6 67N1 67N6 and definite time 67N1T 67N4T elements Any time delay provided by the definite time settings 67N1D 67N4D is in addition to this 2 cycle time...

Page 98: ...und instantaneous definite time overcurrent elements are available Two additional levels of residual ground instantaneous overcurrent elements Levels 5 and 6 are also available The different levels are enabled with the E50G enable setting as shown in Figure 3 10 and Figure 3 11 Figure 3 10 Levels 1 through 4 Residual Ground Instantaneous Definite Time Overcurrent Elements with Directional Control ...

Page 99: ...3 1 Figure 3 2 and Figure 3 3 in the preceding Phase Instantaneous Definite Time Overcurrent Elements subsection substituting residual ground current IG IG 3I0 IA IB IC for phase currents and substituting like settings and Relay Word bits Settings Ranges Setting range for pickup settings 50G1P through 50G6P 0 05 20 00 A secondary 1 A nominal phase current inputs IA IB IC Setting range for definite...

Page 100: ...me overcurrent elements are available for use in any tripping or control scheme To understand the operation of Figure 3 12 and Figure 3 13 follow the explanation given for Figure 3 1 Figure 3 2 and Figure 3 3 in the preceding Phase Instantaneous Definite Time Overcurrent Elements subsection substituting negative sequence current 3I2 3I2 IA a2 IB a IC ABC rotation 3I2 IA a2 IC a IB ACB rotation whe...

Page 101: ...vercurrent Voltage Synchronism Check and Frequency Elements 3 15 SEL 351R Instruction Manual Figure 3 12 Levels 1 Through 4 Negative Sequence Instantaneous Definite Time Overcurrent Elements with Directional Control Option ...

Page 102: ...ts are enabled with the E51P enable setting as follows Table 3 1 Available Phase Time Overcurrent Elements Time Overcurrent Element Enabled with Setting Operating Current See Figure 51P1T 51P2T E51P 1 or 2 E51P 2 IP maximum of A B and C phase currents Figure 3 14 The following is an example of 51P1T element operation 51P2T is similar Settings Ranges Besides the settings involved with the Torque Co...

Page 103: ...10 2 00 recloser or user curves see Figure 9 1 Figure 9 20 51P1RS 51P2RS electromechanical reset timing Y N 51P1CT 51P2CT constant time adder adds additional time to curve 0 00 60 00 cycles no effect if set 0 00 51P1MR 51P2MR minimum response time flattens curve at set time curve can operate no faster than this set time 0 00 60 00 cycles no effect if set 0 00 51P1TC 51P2TC SELOGIC control equation...

Page 104: ... Check and Frequency Elements Date Code 20020215 SEL 351R Instruction Manual Figure 3 14 Phase Time Overcurrent Element 51P1T with Directional Control Option Figure 3 15 Phase Time Overcurrent Element 51P2T with Directional Control Option ...

Page 105: ...rve Tripping and other control applications See Trip Logic in Section 5 Trip and Target Logic 51P1R Phase time overcurrent element is fully reset Element reset testing or other control applications Torque Control Switch Operation 51P1T element example Torque Control Switch Closed The pickup comparator in Figure 3 14 compares the pickup setting 51P1P to the maximum phase current IP if the Torque Co...

Page 106: ...1P1P resulting in Relay Word bit 51P deasserting to logical 0 IP also effectively appears as a magnitude of zero 0 to the curve timing reset timing functions resulting in Relay Word bit 51P1T also deasserting to logical 0 The phase time overcurrent element then starts to time to reset Relay Word bit 51P1R asserts to logical 1 when the phase time overcurrent element is fully reset Control of Logic ...

Page 107: ...ered in the control of logic point TCP1 and thus in the control of the Torque Control Switch and phase time overcurrent element 51P1TC If directional control enable setting E32 N then logic point TCP1 logical 1 and thus the Torque Control Switch closes and phase time overcurrent element 51P1TC is enabled and nondirectional Note Some of the overcurrent element SELOGIC control equation torque contro...

Page 108: ... curve time out indication logical 1 Setting 51P1RS Y If electromechanical reset timing setting 51P1RS Y the phase time overcurrent element reset timing emulates electromechanical reset timing If maximum phase current IP goes above pickup setting 51P1P element is timing or already timed out and then current IP goes below 51P1P the element starts to time to reset emulating electromechanical reset t...

Page 109: ...ency Elements 3 23 SEL 351R Instruction Manual Neutral Ground Time Overcurrent Elements Figure 3 16 Neutral Ground Time Overcurrent Element 51N1T with Directional Control Option Figure 3 17 Neutral Ground Time Overcurrent Element 51N2T with Directional Control Option ...

Page 110: ... curves see Figure 9 1 Figure 9 20 51N1RS 51N2RS electromechanical reset timing Y N 51N1CT 51N2CT constant time adder adds additional time to curve 0 00 60 00 cycles no effect if set 0 00 51N1MR 51N2MR minimum response time flattens curve at set time curve can operate no faster than this set time 0 00 60 00 cycles no effect if set 0 00 51N1TC 51N2TC SELOGIC control equation torque control setting ...

Page 111: ...low the explanation given for Figure 3 14 in the preceding Phase Time Overcurrent Elements subsection substituting residual ground current IG IG 3I0 IA IB IC for maximum phase current IP and substituting like settings and Relay Word bits Figure 3 18 Residual Ground Time Overcurrent Element 51G1T with Directional Control Option Figure 3 19 Residual Ground Time Overcurrent Element 51G2T with Directi...

Page 112: ...e 0 00 60 00 cycles no effect if set 0 00 51G1MR 51G2MR minimum response time flattens curve at set time curve can operate no faster than this set time 0 00 60 00 cycles no effect if set 0 00 51G1TC 51G2TC SELOGIC control equation torque control setting Relay Word bits referenced in Table 9 3 or set directly to logical 1 1 or logical 0 0 see note below Note If SELOGIC control equation torque contr...

Page 113: ...ndix F Setting Negative Sequence Overcurrent Elements for information on setting negative sequence overcurrent elements To understand the operation of Figure 3 20 follow the explanation given for Figure 3 14 in the preceding Phase Time Overcurrent Elements subsection substituting negative sequence current 3I2 3I2 IA a2 IB a IC ABC rotation 3I2 IA a2 IC a IB ACB rotation where a 1 120 and a 2 1 120...

Page 114: ... 0 00 60 00 cycles no effect if set 0 00 51QMR minimum response time flattens curve at set time curve can operate no faster than this set time 0 00 60 00 cycles no effect if set 0 00 51QTC SELOGIC control equation torque control setting Relay Word bits referenced in Table 9 3 or set directly to logical 1 1 or logical 0 0 see note below Note If SELOGIC control equation torque control setting 51QTC ...

Page 115: ...ear panel voltage input VC VAB Phase to phase voltage VBC Phase to phase voltage VCA Phase to phase voltage 3V0 Zero sequence voltage V2 Negative sequence voltage V1 Positive sequence voltage VS Synchronism check voltage from SEL 351R rear panel voltage input VS Voltage VS is used in the synchronism check elements described in the following subsection Synchronism Check Elements Voltage VS is also ...

Page 116: ...P2P 27B2 VB 0 0 300 0 V secondary 27C2 VC 59A1 VA 59P1P 59B1 VB 0 0 300 0 V secondary 59C1 VC 3P59 59A1 59B1 59C1 59A2 VA 59P2P 59B2 VB 0 0 300 0 V secondary 59C2 VC 27AB VAB 27PP Figure 3 22 27BC VBC 0 0 520 0 V secondary 27CA VCA 59AB VAB 59PP 59BC VBC 0 0 520 0 V secondary 59CA VCA 59N1 3V0 59N1P 0 0 300 0 V secondary 59N2 3V0 59N2P 0 0 300 0 V secondary 59Q V2 59QP 0 0 200 0 V secondary 59V1 V...

Page 117: ...Date Code 20020215 Overcurrent Voltage Synchronism Check and Frequency Elements 3 31 SEL 351R Instruction Manual Figure 3 21 Single Phase and Three Phase Voltage Elements ...

Page 118: ...3 32 Overcurrent Voltage Synchronism Check and Frequency Elements Date Code 20020215 SEL 351R Instruction Manual Figure 3 22 Phase to Phase and Sequence Voltage Elements ...

Page 119: ...en the operating voltage goes above the corresponding pickup setting Undervoltage Element Operation Example Refer to Figure 3 21 top of the figure Pickup setting 27P1P is compared to the magnitudes of the individual phase voltages VA VB and VC The logic outputs in Figure 3 21 are the following Relay Word bits 27A1 1 logical 1 if VA pickup setting 27P1P 0 logical 0 if VA pickup setting 27P1P 27B1 1...

Page 120: ...he weak infeed portion of the POTT logic if the weak infeed logic is enabled see Figure 5 6 If the weak infeed portion of the POTT logic is enabled setting EWFC Y and these voltage elements are used in the logic they can still be used in other applications if the settings are applicable If the weak infeed portion of the POTT logic is not enabled these voltage elements can be used in any desired ap...

Page 121: ...3 9 and the SYNCP setting discussion that follows Synchronism Check Elements Settings Table 3 9 Synchronism Check Elements Settings and Settings Ranges Setting Definition Range 25VLO low voltage threshold for healthy voltage window 0 0 300 0 V secondary 25VHI high voltage threshold for healthy voltage window 0 0 300 0 V secondary 25SF maximum slip frequency 0 005 0 500 Hz 25ANG1 synchronism check ...

Page 122: ... Compensate for Constant Phase Angle Difference in Synchronism Check with the SEL 351R Recloser Control for more information on setting SYNCP with an angle setting Note on setting SYNCP 0 Settings SYNCP 0 and SYNCP VA are effectively the same voltage VS is directly synchronism checked with voltage VA VS does not lag VA The relay will display the setting entered SYNCP VA or SYNCP 0 Accuracy Voltage...

Page 123: ...Date Code 20020215 Overcurrent Voltage Synchronism Check and Frequency Elements 3 37 SEL 351R Instruction Manual Figure 3 25 Synchronism Check Elements ...

Page 124: ...ction VA N The presumption is that the frequency determined for A phase is also valid for B and C phase in a three phase power system However for example if voltage VB is to be synchronized with voltage VS and plans were to connect only voltage inputs VB and VS to Phase B on both sides of the circuit breaker then voltage input VA will also have to be connected for frequency determination If desire...

Page 125: ...tage limits 25VLO and 25VHI are applicable to other control schemes Relay Word bits 59VP 59VS and 59VA can be used in other logic at the same time they are used in the synchronism check logic If synchronism check is not being used Relay Word bits 59VP 59VS and 59VA can still be used in other logic with voltage limit settings 25VLO and 25VHI set as desired Enable the synchronism check logic setting...

Page 126: ...s negative indicating that voltage VS is not slipping behind voltage VP but in fact slipping ahead of voltage VP In a time period of one second the angular distance between voltage VP and voltage VS changes by 0 10 slip cycles which translates into 0 10 slip cycles second x 360 slip cycle x 1 second 36 Thus in a time period of one second the angular distance between voltage VP and voltage VS chang...

Page 127: ...rence VP VS 10 Also if breaker close time setting TCLOSD 0 00 the Angle Difference Calculator does not take into account breaker close time even if the voltages VP and VS are slipping with respect to one another Voltages VP and VS are Slipping Refer to bottom of Figure 3 25 Angle Difference increasing VS moving away from VP Angle Difference decreasing VS approaching VP Angle Difference angle compe...

Page 128: ...P VS fP fS x TCLOSD x 1 second 60 cycles x 360 slip cycle VP VS 0 10 x 0 167 x 360 VP VS 6 During the breaker close time TCLOSD the voltage angle difference between voltages VP and VS changes by 6 degrees This 6 degree angle compensation is applied to voltage VS resulting in derived voltage VS as shown in Figure 3 26 Note The angle compensation in Figure 3 26 appears much greater than 6 degrees Fi...

Page 129: ...ith VP Angle Difference 0 synchronism check elements 25A1 and 25A2 assert to logical 1 2 The bottom of Figure 3 26 shows the Angle Difference increasing VS is moving away from VP VS was in phase with VP Angle Difference 0 but has now moved past VP If the Angle Difference is increasing but the Angle Difference is still less than maximum angle settings 25ANG1 or 25ANG2 then corresponding synchronism...

Page 130: ...ing Relay Word bit 25A1 or 25A2 asserts to logical 1 for that instant asserts for 1 4 cycle For example if SELOGIC control equation setting 79CLS Reclose Supervision is set as follows 79CLS 25A1 and the angle difference is less than angle setting 25ANG1 at that instant setting 79CLS asserts to logical 1 for 1 4 cycle allowing the sealed in open interval time out to propagate on to the close logic ...

Page 131: ...is manual and the Underfrequency loadshedding setting in Table 10 and subsection Settings Descriptions in the Settings section in the SEL 351R Quick Start Installation and User s Guide For various connections Figure 1 31 through Figure 1 34 and associated text in subsection Reclose Supervision Logic in Section 1 Factory Set Logic discuss possible changes necessary to the factory default undervolta...

Page 132: ...3 46 Overcurrent Voltage Synchronism Check and Frequency Elements Date Code 20020215 SEL 351R Instruction Manual Figure 3 28 Levels 1 Through 6 Frequency Elements ...

Page 133: ...kup 40 10 65 00 Hz 81D3D frequency element 3 time delay 2 00 16000 00 cycles in 0 25 cycle steps 81D4P frequency element 4 pickup 40 10 65 00 Hz 81D4D frequency element 4 time delay 2 00 16000 00 cycles in 0 25 cycle steps 81D5P frequency element 5 pickup 40 10 65 00 Hz 81D5D frequency element 5 time delay 2 00 16000 00 cycles in 0 25 cycle steps 81D6P frequency element 6 pickup 40 10 65 00 Hz 81D...

Page 134: ...ncy element 2 81D2P 59 65 Hz frequency element 2 pickup With these settings 81D2P NFREQ the underfrequency part of frequency element 2 logic is enabled 81D2 and 81D2T operate as underfrequency elements 81D2 is used in testing only Frequency Element Operation Refer to Figure 3 28 Overfrequency Element Operation With the previous overfrequency element example settings if system frequency is less tha...

Page 135: ...ng fault inception Any voltage VA VB or VC goes below voltage pickup 27B81P EZ global setting True three phase voltage connected Y Voltage VA goes below voltage pickup 27B81P EZ global setting True three phase voltage connected N This control prevents erroneous frequency element operation following fault inception Other Uses for Undervoltage Element 27B81 If voltage pickup setting 27B81P is applic...

Page 136: ......

Page 137: ...Reverse Logic 4 10 Directional Control for Negative Sequence and Phase Overcurrent Elements 4 19 Internal Enables 4 20 Directional Elements 4 20 Directional Element Routing 4 21 Loss of Potential 4 21 Direction Forward Reverse Logic 4 21 Directional Control Settings 4 27 Settings Made Automatically 4 27 Settings 4 28 DIR1 Level 1 Overcurrent Element Direction Setting 4 28 DIR2 Level 2 Overcurrent ...

Page 138: ...onal Elements 4 11 Figure 4 6 Internal Enable 32VE Logic for Zero Sequence Voltage Polarized Residual Current Directional Element 4 12 Figure 4 7 Internal Enable 32NE for Zero Sequence Voltage Polarized Neutral Current Directional Element 4 12 Figure 4 8 Best Choice Ground Directional Logic 4 13 Figure 4 9 Negative Sequence Voltage Polarized Directional Element for Neutral and Residual Overcurrent...

Page 139: ...51R Instruction Manual Figure 4 19 Routing of Directional Elements to Negative Sequence and Phase Overcurrent Elements 4 25 Figure 4 20 Direction Forward Reverse Logic for Negative Sequence Overcurrent Elements 4 25 Figure 4 21 Direction Forward Reverse Logic for Phase Overcurrent Elements 4 26 ...

Page 140: ......

Page 141: ...itive sequence current A secondary V0 zero sequence voltage V secondary I0 zero sequence current A secondary V2 negative sequence voltage V secondary The circuit breaker has to be closed Relay Word bit 3PO logical 0 for the LOP logic to operate The EZ global setting True three phase voltage connected Y N Y also has to be made in order for the LOP logic to operate corresponding regular global setti...

Page 142: ...and Figure 4 19 These direction forward overcurrent elements effectively become nondirectional and provide overcurrent protection during a loss of potential condition As detailed previously voltage based directional elements are disabled during a loss of potential condition Thus the overcurrent elements controlled by these voltage based directional elements are also disabled But this disable condi...

Page 143: ...logic only operates if the positive sequence current I1 is greater than the Positive Sequence Threshold defined in Figure 4 2 For a balanced load condition I1 phase current magnitude Forward load load flowing out lies within the hatched region labeled ZLOUT Relay Word bit ZLOUT asserts to logical 1 when the load lies within this hatched region Reverse load load flowing in lies within the hatched r...

Page 144: ...t Setting Example Example system conditions Nominal Line Line Voltage 230 kV Maximum Forward Load 800 MVA Maximum Reverse Load 500 MVA Power Factor Forward Load 0 90 lag to 0 95 lead Power Factor Reverse Load 0 80 lag to 0 95 lead CT ratio 2000 5 400 PT ratio 134000 67 2000 The PTs are connected line to neutral Convert Maximum Loads to Equivalent Secondary Impedances Start with maximum forward loa...

Page 145: ...0 9 19 00 Ω secondary Convert Power Factors to Equivalent Load Angles The power factor forward load can vary from 0 90 lag to 0 95 lead Setting PLAF cos 1 0 90 26 Setting NLAF cos 1 0 95 18 The power factor reverse load can vary from 0 80 lag to 0 95 lead Setting PLAR 180 cos 1 0 80 180 37 143 Setting NLAR 180 cos 1 0 95 180 18 198 Apply Load Encroachment Logic to a Phase Time Overcurrent Again fr...

Page 146: ...hanged in angle This change in V1 can possibly cause ZLOAD to deassert logical 0 erroneously indicating that a fault condition exists Thus ZLOAD should be supervised by LOP in a torque control setting This also effectively happens in the directional element in Figure 4 18 where ZLOAD and LOP are part of the logic In the above setting example phase instantaneous overcurrent element 50P6 is set abov...

Page 147: ...vercurrent elements These directional elements are Negative sequence voltage polarized directional element residual and neutral Zero sequence voltage polarized residual current directional element residual and neutral Zero sequence voltage polarized neutral current directional element neutral only DWG M351R095a Best Choice Ground Directional Logic Figure 4 8 neg seq volt pol Fig 4 9 zero seq volt ...

Page 148: ...larized residual current directional element and zero sequence voltage polarized neutral current directional element Note that Figure 4 5 has extra internal enable 32QE which is used in the directional element logic that controls negative sequence and phase overcurrent elements see Figure 4 17 The settings involved with internal enables 32QGE and 32VE in Figure 4 5 and Figure 4 6 e g settings a2 k...

Page 149: ...nd then on to the direction forward reverse logic in Figure 4 14 Neutral overcurrent directional logic shown in Figure 4 13 uses the quantities listed above along with zero sequence polarized neutral current directional element outputs from Figure 4 11 Loss of Potential Note that if both the following are true Enable setting ELOP Y A loss of potential condition occurs Relay Word bit LOP asserts th...

Page 150: ...ction forward DIR1 F Level 2 overcurrent elements set direction forward DIR2 F Level 3 overcurrent elements set direction reverse DIR3 R If a level direction setting e g DIR1 is set DIR1 N nondirectional then the corresponding Level 1 directional control output in Figure 4 14 asserts to logical 1 The Level 1 overcurrent elements referenced in Figure 4 14 and Figure 4 15 are then not controlled by ...

Page 151: ...20215 Loss of Potential Load Encroachment and Directional Element Logic 4 11 SEL 351R Instruction Manual Figure 4 5 Internal Enables 32QE and 32QGE Logic for Negative Sequence Voltage Polarized Directional Elements ...

Page 152: ...Polarized Residual Current Directional Element 50NR 50NF IN 50GRP 10 50GFP 10 V in setting ORDER E32IV 32QGE 32VE 32NE to Figure 4 11 Relay Word Bit Relay Word Bits DWG M351R152 setting enable Relay Word Bits SELOGIC Setting settings internal enable SELOGIC enable see Figure 4 6 Figure 4 7 Internal Enable 32NE for Zero Sequence Voltage Polarized Neutral Current Directional Element ...

Page 153: ...Date Code 20020215 Loss of Potential Load Encroachment and Directional Element Logic 4 13 SEL 351R Instruction Manual Figure 4 8 Best Choice Ground Directional Logic ...

Page 154: ...otential Load Encroachment and Directional Element Logic Date Code 20020215 SEL 351R Instruction Manual Figure 4 9 Negative Sequence Voltage Polarized Directional Element for Neutral and Residual Overcurrent Elements ...

Page 155: ...ss of Potential Load Encroachment and Directional Element Logic 4 15 SEL 351R Instruction Manual Figure 4 10 Zero Sequence Voltage Polarized Residual Current Directional Element for Neutral and Residual Overcurrent Elements ...

Page 156: ...25 If Z0F Setting 0 Forward Threshold 1 25 Z0F 0 25 If Z0R Setting 0 Reverse Threshold 1 25 Z0R 0 25 If Z0R Setting 0 Reverse Threshold 0 75 Z0R 0 25 Direction Element Characteristics Reverse Threshold Forward Threshold Forward Threshold Reverse Threshold Z0 PLANE X0 R0 0 0 I V 0 I 0 V I 0 0 V V I 0 0 IN 2 Relay Word Bits Relay Word Bits Setting DWG M351R155 Relay Word Bit Relay Word Bit Reverse F...

Page 157: ...oad Encroachment and Directional Element Logic 4 17 SEL 351R Instruction Manual Figure 4 12 Routing of Directional Elements to Residual Overcurrent Elements Figure 4 13 Routing of Directional Elements to Neutral Ground Overcurrent Elements ...

Page 158: ...4 18 Loss of Potential Load Encroachment and Directional Element Logic Date Code 20020215 SEL 351R Instruction Manual Figure 4 14 Direction Forward Reverse Logic for Residual Ground Overcurrent Elements ...

Page 159: ...ing E32 and other directional control settings are described in the following subsection Directional Control Settings The negative sequence voltage polarized directional element controls the negative sequence overcurrent elements Negative sequence voltage polarized and positive sequence voltage polarized directional elements control the phase overcurrent elements Figure 4 17 gives an overview of h...

Page 160: ...round and residual ground overcurrent elements see Figure 4 4 The settings involved with internal enable 32QE in Figure 4 5 e g settings a2 k2 are explained in a following subsection Directional Control Settings Directional Elements Refer to Figure 4 16 Figure 4 17 and Figure 4 18 If enable setting ELOP Y or Y1 and a loss of potential condition occurs Relay Word bit LOP asserts the negative sequen...

Page 161: ... elements effectively become nondirectional and provide overcurrent protection during a loss of potential condition As detailed previously in Figure 4 17 and Figure 4 18 voltage based directional elements are disabled during a loss of potential condition Thus the overcurrent elements controlled by these voltage based directional elements are also disabled But this disable condition is overridden f...

Page 162: ...e then not controlled by the directional control logic See the beginning of following subsection Directional Control Settings for discussion of the operation of level direction settings DIR1 through DIR4 when the directional control enable setting E32 is set to E32 N In some applications level direction settings DIR1 through DIR4 are not flexible enough in assigning the desired direction for certa...

Page 163: ... Loss of Potential Load Encroachment and Directional Element Logic 4 23 SEL 351R Instruction Manual Figure 4 17 Negative Sequence Voltage Polarized Directional Element for Negative Sequence and Phase Overcurrent Elements ...

Page 164: ...ss of Potential Load Encroachment and Directional Element Logic Date Code 20020215 SEL 351R Instruction Manual Figure 4 18 Positive Sequence Voltage Polarized Directional Element for Phase Overcurrent Elements ...

Page 165: ...hment and Directional Element Logic 4 25 SEL 351R Instruction Manual Figure 4 19 Routing of Directional Elements to Negative Sequence and Phase Overcurrent Elements Figure 4 20 Direction Forward Reverse Logic for Negative Sequence Overcurrent Elements ...

Page 166: ...4 26 Loss of Potential Load Encroachment and Directional Element Logic Date Code 20020215 SEL 351R Instruction Manual Figure 4 21 Direction Forward Reverse Logic for Phase Overcurrent Elements ...

Page 167: ... elements DIR4 N no directional control for Level 4 overcurrent elements With the above settings the directional control outputs in Figure 4 14 Figure 4 20 and Figure 4 21 assert to logical 1 The referenced overcurrent elements in Figure 4 14 Figure 4 20 and Figure 4 21 are then not controlled by the directional control logic Settings Made Automatically If the directional control enable setting E3...

Page 168: ...urrent Elements Controlled by Level Direction Settings DIR1 Through DIR4 corresponding overcurrent element figure numbers in parentheses Level Direction Settings Phase Neutral Ground Residual Ground Negative Sequence DIR1 67P1 3 3 67P1T 3 3 51P1T 3 14 51P2T 3 15 67N1 3 8 67N1T 3 8 51N1T 3 16 51N2T 3 17 67G1 3 10 67G1T 3 10 51G1T 3 18 51G2T 3 19 67Q1 3 12 67Q1T 3 12 51QT 3 20 DIR2 67P2 3 3 67P2T 3 ...

Page 169: ...nd and residual ground overcurrent elements If the zero sequence voltage polarized directional element is not operable i e it does not have sufficient operating quantity as indicated by its internal enable 32QGE not being asserted then the second listed directional element V zero sequence voltage polarized residual current directional element see Figure 4 10 provides directional control for the ne...

Page 170: ... If the load encroachment logic is enabled enable setting ELOAD Y then setting 50P32P is not made or displayed but is fixed internally at 0 1 A secondary 1 A nominal phase current inputs IA IB IC Z2F Forward Directional Z2 Threshold Z2R Reverse Directional Z2 Threshold Setting Range 640 00 to 640 00 Ω secondary 1 A nominal phase current inputs IA IB IC Z2F and Z2R are used to calculate the Forward...

Page 171: ...ce and below the lowest expected negative sequence current magnitude for unbalanced reverse faults 50QFP and 50QRP Set Automatically If enable setting E32 AUTO settings 50QFP and 50QRP are set automatically at 50QFP 0 10 A secondary 1 A nominal phase current inputs IA IB IC 50QRP 0 05 A secondary 1 A nominal phase current inputs IA IB IC a2 Positive Sequence Current Restraint Factor I2 I1 Setting ...

Page 172: ...nabled 0 2 I 2 k I This check ensures that the relay uses the most robust analog quantities in making directional decisions for the neutral ground and residual ground overcurrent elements If the internal enable 32VE internal enable for the zero sequence voltage polarized residual current directional element that controls the neutral ground and residual ground overcurrent elements is deasserted the...

Page 173: ...magnitude for unbalanced reverse faults The 50GFP 10 setting IN current value is the pickup for the forward fault detector 50NF of the zero sequence voltage polarized neutral current directional element see Figure 4 7 This setting is always automatic and used for SEF applications The 50GRP 10 setting IN current value is the pickup for the reverse fault detector 50NR of the zero sequence voltage po...

Page 174: ... and Figure 4 11 Z0F and Z0R Set Automatically If enable setting E32 AUTO settings Z0F and Z0R zero sequence impedance values are calculated automatically using the zero sequence line impedance magnitude setting Z0MAG as follows Z0F Z0MAG 2 Ω secondary Z0R Z0MAG 2 1 0 Ω secondary If enable setting E32 Y settings Z0F and Z0R zero sequence impedance values are calculated by the user and entered by t...

Page 175: ...ection forward DIR2 F Level 3 overcurrent elements set direction reverse DIR3 R Suppose that the Level 1 overcurrent elements should be set as follows 67P1 direction forward 67G1 direction forward 51P1T direction forward 51P2T direction reverse 51N1T nondirectional 51G1T direction forward To accomplish this the DIR1 setting is turned off and the corresponding SELOGIC control equation torque contro...

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Page 177: ...s TRSOTF and TR 5 11 Trip Setting DTT 5 11 Use Existing SEL 321 Relay Application Guides for the SEL 351R Recloser Control 5 12 Optoisolated Input Settings Differences Between the SEL 321 and SEL 351R Recloser Control 5 12 Trip Settings Differences Between the SEL 321 and SEL 351R Recloser Control 5 12 Permissive Overreaching Transfer Trip POTT Logic 5 13 Use Existing SEL 321 Relay POTT Applicatio...

Page 178: ... 67G2SD 67Q2SD Level 2 Short Delay 5 25 Logic Outputs 5 25 DSTRT Directional Carrier Start 5 26 NSTRT Nondirectional Carrier Start 5 26 STOP Stop Carrier 5 26 BTX Block Trip Extension 5 26 Installation Variations 5 27 Additional Front Panel Status and Target LED Information 5 29 A B and C Target LEDs 5 29 Target Reset Lamp Test Front Panel Pushbutton 5 29 Other Applications for the Target Reset Fu...

Page 179: ... DCUB1 5 23 Figure 5 13 SEL 351R Recloser Control Connections to Communications Equipment for a Three Terminal Line DCUB Scheme setting ECOMM DCUB2 5 24 Figure 5 14 DCB Logic 5 27 Figure 5 15 SEL 351R Recloser Control Connections to Communications Equipment for a Two Terminal Line DCB Scheme 5 28 Figure 5 16 SEL 351R Recloser Control Connections to Communications Equipment for a Three Terminal Lin...

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Page 181: ...communications assisted trip via SELOGIC control equation settings TRCOMM or DTT reprogram an LED with Relay Word bit COMMT The LED also has to be set as a trip latch LED see Front Panel Status and Trip Target LEDs subsection in Section 1 Factory Set Logic TRSOTF Switch Onto Fault Trip Conditions Setting TRSOTF is supervised by the switch onto fault condition SOTFE See Switch Onto Fault SOTF Trip ...

Page 182: ...r example in a communications assisted trip scheme TRCOMM is set with direction forward overreaching Level 2 overcurrent elements TR is set with direction forward under reaching Level 1 overcurrent elements and other time delayed elements e g Level 2 definite time overcurrent elements and TRSOTF is set with nondirectional overcurrent elements Figure 5 1 Trip Logic ...

Page 183: ... Duration Timer with setting TDURD outputs a logical 1 for a time duration of TDURD cycles any time it sees a rising edge on its input logical 0 to logical 1 transition if it is not already timing timer is reset The TDURD timer assures that the TRIP Relay Word bit remains asserted at logical 1 for a minimum of TDURD cycles If the output of OR 1 gate is logical 1 beyond the TDURD time Relay Word bi...

Page 184: ...at the combination of the TARGET RESET Pushbutton and the TAR R Target Reset serial port command is also available as Relay Word bit TRGTR See Figure 5 17 and accompanying text for applications for Relay Word bit TRGTR Factory Settings Example using setting TR If the communications assisted and switch onto fault trip logic at the top of Figure 5 1 can effectively be ignored the figure becomes a lo...

Page 185: ...able time window for selected elements to trip right after the circuit breaker closes Switch onto fault implies that a circuit breaker is closed into an existing fault condition For example suppose safety grounds are accidentally left attached to a line after a clearance If the circuit breaker is closed into such a condition the resulting fault needs to be cleared right away and reclosing blocked ...

Page 186: ...R Recloser Control The open circuit breaker condition is determined from the combination of Circuit breaker status 52A Load current condition 50L If the circuit breaker is open 52A logical 0 and current is below phase pickup 50LP 50L logical 0 then the three pole open 3PO condition is true 3PO logical 1 circuit breaker open The 3POD dropout time qualifies circuit breaker closure whether detected b...

Page 187: ...nabled by making time setting 52AEND 52AEND OFF Time setting 52AEND qualifies the three pole open 3PO condition and then asserts Relay Word bit SOTFE SOTFE logical 1 Note that SOTFE is asserted when the circuit breaker is open This allows elements set in the SELOGIC control equation trip setting TRSOTF to operate if a fault occurs when the circuit breaker is open see Figure 5 1 In such a scenario ...

Page 188: ... SOTFE is the output of the circuit breaker operated SOTF logic or the close bus operated SOTF logic described previously Time setting SOTFD in each of these logic paths provides the effective time window for the overcurrent elements in SELOGIC control equation trip setting TRSOTF to trip after the circuit breaker closes see Figure 5 1 middle of figure Time setting SOTFD is usually set around 30 c...

Page 189: ...sisted Tripping Scheme Refer to Figure 5 4 and the top half of Figure 5 1 The six available tripping schemes are Direct Transfer Trip DTT Direct Underreaching Transfer Trip DUTT Permissive Overreaching Transfer Trip POTT Permissive Underreaching Transfer Trip PUTT Directional Comparison Unblocking DCUB Directional Comparison Blocking DCB Enable Setting ECOMM The POTT PUTT DCUB and DCB tripping sch...

Page 190: ...tions assisted tripping schemes are explained in subsections that follow Note EZ settings should be turned off for the setting group s used in a communications assisted tripping scheme The overcurrent element applications for traditional recloser control schemes addressed with EZ settings differ from those in a communications assisted tripping scheme see following trip settings See Table 1 1 and 1...

Page 191: ...COMM Setting TRSOTF can be set as described in preceding subsection Switch Onto Fault SOTF Trip Logic Setting TR is typically set with unsupervised Level 1 underreaching overcurrent elements set direction forward 67P1 Level 1 directional phase instantaneous overcurrent element 67N1 Level 1 directional neutral ground instantaneous overcurrent element 67G1 Level 1 directional residual ground instant...

Page 192: ... SEL 351R Recloser Control The SEL 351R does not have optoisolated input settings like the SEL 321 Relay Rather the optoisolated inputs of the SEL 351R are available as Relay Word bits and are used in SELOGIC control equations The following optoisolated input setting example is for a Permissive Overreaching Transfer Trip POTT scheme SEL 321 Relay SEL 351R IN2 PT PT1 IN102 received permissive trip ...

Page 193: ...ak and or zero infeed line terminals Use Existing SEL 321 Relay POTT Application Guide for the SEL 351R Recloser Control Use the existing SEL 321 Relay POTT application guide AG95 29 to help set up the SEL 351R in a POTT scheme see preceding subsection Communications Assisted Trip Logic General Overview for more setting comparison information on the SEL 321 SEL 351R External Inputs See Optoisolate...

Page 194: ... Setting the SEL 351R Recloser Control for setting ranges Z3RBD Zone Level 3 Reverse Block Delay Current reversal guard timer typically set at 5 cycles EBLKD Echo Block Delay Prevents echoing of received PT for settable delay after dropout of local permissive elements in trip setting TRCOMM typically set at 10 cycles Set to OFF to defeat EBLKD ETDPU Echo Time Delay Pickup Sets minimum time require...

Page 195: ...operates as an input into the trip logic in Figure 5 1 KEY Key Permissive Trip Signals communications equipment to transmit permissive trip For example SELOGIC control equation setting OUT105 is set OUT105 KEY Output contact OUT105 drives a communications equipment transmitter input in a two terminal line application see Figure 5 8 In a three terminal line scheme output contact OUT107 is set the s...

Page 196: ...5 16 Trip and Target Logic Date Code 20020215 SEL 351R Instruction Manual Figure 5 6 POTT Logic ...

Page 197: ...ement 67Q1 Level 1 directional negative sequence instantaneous overcurrent element instead of with element KEY see Figure 5 8 OUT105 67P1 67N1 67G1 67Q1 Note only use enabled elements If echo keying is desired add the echo key permissive trip logic output as follows OUT105 67P1 67N1 67G1 67Q1 EKEY In a three terminal line scheme output contact OUT107 is set the same as OUT105 see Figure 5 9 Instal...

Page 198: ...LOCKING DCUB LOGIC Enable the DCUB logic by setting ECOMM DCUB1 or ECOMM DCUB2 The DCUB logic in Figure 5 10 is an extension of the POTT logic in Figure 5 6 Thus the relay requires all the POTT settings and logic plus exclusive DCUB settings and logic The difference between setting choices DCUB1 and DCUB2 is DCUB1 directional comparison unblocking scheme for two terminal line communications from o...

Page 199: ...minal line DCUB applications setting ECOMM DCUB1 a permissive trip signal is received from one remote terminal One optoisolated input on the SEL 351R e g input IN104 is driven by a communications equipment receiver output see Figure 5 12 Make SELOGIC control equation setting PT1 PT1 IN104 two terminal line application In three terminal line DCUB applications setting ECOMM DCUB2 permissive trip sig...

Page 200: ... are routed into the DCUB logic in Figure 5 10 for unblocking block and permissive trip receive logic decisions Timer Settings See Section 9 Setting the SEL 351R Recloser Control for setting ranges GARD1D Guard Present Delay Sets minimum time requirement for reinstating permissive tripping following a loss of channel condition typically set at 10 cycles Channel 1 and 2 logic use separate timers bu...

Page 201: ...hree terminal line DCUB applications setting ECOMM DCUB2 UBB1 or UBB2 disable tripping if the loss of channel condition for the respective Channel 1 or 2 continues for longer than time UBDURD The UBB1 and UBB2 are routed in various combinations in Figure 5 11 to control Relay Word bit UBB depending on enable setting ECOMM DCUB1 or DCUB2 Relay Word bit UBB is the unblock block input into the trip l...

Page 202: ...5 22 Trip and Target Logic Date Code 20020215 SEL 351R Instruction Manual Figure 5 10 DCUB Logic ...

Page 203: ... to control Relay Word bit PTRX depending on enable setting ECOMM DCUB1 or DCUB2 Relay Word bit PTRX is the permissive trip receive input into the trip logic in Figure 5 1 Installation Variations Figure 5 13 shows output contacts OUT105 and OUT107 connected to separate communications equipment for the two remote terminals Both output contacts are programmed the same OUT105 KEY and OUT107 KEY Depen...

Page 204: ...al for a settable time following the dropout of all Level 3 directional overcurrent elements 67P3 67N3 67G3 and 67Q3 Latches the block trip send condition by the directional overcurrent following a close in zero voltage three phase fault where the polarizing memory expires Latch is removed when the polarizing memory voltage returns or current is removed Extends the received block signal by a setta...

Page 205: ...routed through a dropout timer BTXD in the DCB logic in Figure 5 14 The timer output Relay Word bit BTX is routed to the trip logic in Figure 5 1 Timer Settings See Section 9 Setting the SEL 351R Recloser Control for setting ranges Z3XPU Zone Level 3 Reverse Pickup Time Delay Current reversal guard pickup timer typically set at 1 cycle Z3XD Zone Level 3 Reverse Dropout Extension Current reversal g...

Page 206: ... control equation setting OUT105 is set OUT105 DSTRT NSTRT Output contact OUT105 drives a communications equipment transmitter input in a two terminal line application see Figure 5 15 In a three terminal line scheme output contact OUT107 is set the same as OUT105 see Figure 5 16 OUT107 DSTRT NSTRT STOP Stop Carrier Program to an output contact to stop carrier For example SELOGIC control equation s...

Page 207: ...on perhaps one output contact e g OUT105 DSTRT NSTRT can be connected in parallel to both START inputs on the communications equipment in Figure 5 16 Then output contact OUT107 can be used for another function Depending on the installation perhaps one output contact e g OUT106 STOP can be connected in parallel to both STOP inputs on the communications equipment in Figure 5 16 Then output contact O...

Page 208: ... contacts in Figure 5 16 Then setting BT would be programmed as BT IN104 and input IN106 can be used for another function In Figure 5 15 and Figure 5 16 the carrier scheme cutout switch contact 85CO should be closed when the communications equipment is taken out of service so that the BT input of the relay remains asserted An alternative to asserting the BT input is to change to a setting group wh...

Page 209: ...re true True three phase voltage is connected to the SEL 351R Setting 3PVOLT Y is made SET G command Target Reset Lamp Test Front Panel Pushbutton When the Target Reset Lamp Test front panel pushbutton is pressed All front panel LEDs illuminate for one 1 second All latched target LEDs are extinguished unlatched unless a trip condition is present in which case the latched target LEDs reappear in th...

Page 210: ...s DP3 causing the message BREAKER FAILURE to display in the rotating default display This message can be removed from the display rotation by pushing the TARGET RESET Pushbutton Relay Word bit TRGTR pulses to logical 1 unlatching SV8 and in turn deasserting DP3 Thus front panel rotating default displays can be easily reset along with the front panel targets by pushing the TARGET RESET Pushbutton S...

Page 211: ...closer Controls 6 10 Settings Example 2 6 11 Reclosing Relay 6 11 Reclosing Relay States and General Operation 6 12 Lockout State 6 12 Reclosing Relay States and Settings Setting Group Changes 6 13 Defeat the Reclosing Relay 6 13 Close Logic Can Still Operate When the Reclosing Relay is Defeated 6 14 Reclosing Relay Timer Settings 6 14 Open Interval Timers 6 15 Determination of Number of Reclosure...

Page 212: ...Ranges 6 14 Table 6 3 Shot Counter Correspondence to Relay Word Bits and Open Interval Times 6 18 Table 6 4 Reclosing Relay SELOGIC Control Equation Settings 6 18 Table 6 5 Open Interval Time Example Settings 6 23 FIGURES Figure 6 1 Close Logic 6 2 Figure 6 2 Reclose Supervision Logic following open interval time out 6 5 Figure 6 3 Reclose Supervision Limit Timer Operation refer to bottom of Figur...

Page 213: ...e output contact Reclose Logic This subsection describes all the reclosing relay settings and logic needed for automatic reclosing besides the final close logic and reclose supervision logic described in the previous subsections The reclose enable setting E79 has setting choices N 1 2 3 and 4 Setting E79 N defeats the reclosing relay Setting choices 1 through 4 are the number of desired automatic ...

Page 214: ...n be asserted to logical 1 if either of the following occurs A reclosing relay open interval times out qualified by SELOGIC control equation setting 79CLS see Figure 6 2 Or SELOGIC control equation setting CL goes from logical 0 to logical 1 rising edge transition Unlatch Close If the CLOSE Relay Word bit is asserted at logical 1 it stays asserted at logical 1 until one of the following occurs The...

Page 215: ... then the close logic is inoperable Also the reclosing relay is defeated see Reclosing Relay later in this section Circuit Breaker Status Refer to the bottom of Figure 6 1 Note that SELOGIC control equation setting 52A circuit breaker status is available as Relay Word bit 52A This makes for convenience in setting other SELOGIC control equations For example if the following setting is made 52A IN10...

Page 216: ...onal output contacts RECLOSE SUPERVISION LOGIC Note that one of the inputs into the close logic in Figure 6 1 is Reclosing Relay Open Interval Time Out qualified by 79CLS This input into the close logic in Figure 6 1 is the indication that a reclosing relay open interval has timed out see Figure 6 6 a qualifying condition SELOGIC control equation setting 79CLS has been met and thus automatic reclo...

Page 217: ...Date Code 20020215 Close and Reclose Logic 6 5 SEL 351R Instruction Manual Figure 6 2 Reclose Supervision Logic following open interval time out ...

Page 218: ...6 6 Close and Reclose Logic Date Code 20020215 SEL 351R Instruction Manual Figure 6 3 Reclose Supervision Limit Timer Operation refer to bottom of Figure 6 2 ...

Page 219: ...he final close logic in Figure 6 1 to automatically reclose the circuit breaker If 79CLS is deasserted to logical 0 at the instant of an open interval time out the following occurs No automatic reclosing takes place Relay Word bit RCSF Reclose Supervision Failure indication asserts to logical 1 for one processing interval The reclosing relay is driven to the Lockout State See the previous Factory ...

Page 220: ...0 then a reclosing relay open interval time out seals Then when 79CLS asserts to logical 1 the sealed in reclosing relay open interval time out condition will propagate through Figure 6 2 and on to the close logic in Figure 6 1 Unlatch Reclose Supervision Logic bottom of Figure 6 2 Refer to the bottom of Figure 6 2 If the reclosing relay open interval time out condition is sealed in it stays seale...

Page 221: ...h circuit breakers open for a transmission line fault the SEL 351R 1 recloses circuit breaker 52 1 first followed by the SEL 351R 2 reclosing circuit breaker 52 2 after a synchronism check across circuit breaker 52 2 Figure 6 4 SEL 351R Recloser Controls Installed at Both Ends of a Transmission Line in a High Speed Reclose Scheme SEL 351R 1 Recloser Control Before allowing circuit breaker 52 1 to ...

Page 222: ...d has reenergized the line The SEL 351R 2 has to see Bus 2 hot transmission line hot and in synchronism across open circuit breaker 52 2 for open interval timing to begin Thus SEL 351R 2 open interval timing is stalled when the transmission line voltage and Bus 2 voltage are not in synchronism across open circuit breaker 52 2 79STL 25A1 NOT 25A1 Note A transient synchronism check condition across ...

Page 223: ...eck Elements note item 3 under Synchronism Check Element Outputs Voltages VP and VS are Slipping Item 3 describes a last attempt for a synchronism check reclose before timer 79CLSD times out or setting 79CLSD 0 00 and only one check is made RECLOSING RELAY Note that input Reclosing Relay Open Interval Time Out in Figure 6 2 is the logic input that is qualified by SELOGIC control equation setting 7...

Page 224: ...orresponding Front Panel LED Reset 79RS RS Reclose Cycle 79CY CY Lockout 79LO LO The reclosing relay is in one and only one of these states listed in Table 6 1 at any time When in a given state the corresponding Relay Word bit asserts to logical 1 and the LED illuminates Automatic reclosing only takes place when the relay is in the Reclose Cycle State Lockout State The reclosing relay goes to the ...

Page 225: ...ate it was in before the settings change The shot counter is driven to last shot last shot corresponding to the new settings see discussion on last shot that follows The reset timer is loaded with reset time setting 79RSLD see discussion on reset timing later in this section If the relay happened to be in the Reclose Cycle State and was timing on an open interval before the settings change the rel...

Page 226: ...he close logic still operates allowing closing to take place via SELOGIC control equation setting CL close conditions other than automatic reclosing See Close Logic earlier in this section for more discussion on SELOGIC control equation settings 52A and CL Also see Optoisolated Inputs in Section 7 Inputs Outputs Timers and Other Control Logic for more discussion on SELOGIC control equation setting...

Page 227: ... other than zero both open interval time 790I3 and 79OI4 would both be inoperative because a preceding open interval time is set to zero i e 79OI3 0 00 If open interval 1 time setting 79OI1 is set to zero 79OI1 0 00 cycles no open interval timing takes place and the reclosing relay is defeated The open interval timers time consecutively they do not have the same beginning time reference point In t...

Page 228: ...he Reset State from the Reclose Cycle State or the Lockout State Circuit breaker status is determined by the SELOGIC control equation setting 52A See Close Logic earlier in this section for more discussion on SELOGIC control equation setting 52A Also see Optoisolated Inputs in Section 7 Inputs Outputs Timers and Other Control Logic for more discussion on SELOGIC control equation setting 52A Settin...

Page 229: ...e OPTMN deasserts to logical 0 The SEL 351R can only time on an open interval when it is in the Reclose Cycle State but just because the relay is in the Reclose Cycle State does not necessarily mean the relay is timing on an open interval The SEL 351R only times on an open interval after successful reclose initiation and if no stall conditions are present see Skip Shot and Stall Open Interval Timi...

Page 230: ...n Setting 79SEQ later in this subsection Reclosing Relay SELOGIC Control Equation Settings Overview Table 6 4 Reclosing Relay SELOGIC Control Equation Settings SELOGIC Control Equation Setting Factory Setting Definition 79RI TRIP Reclose Initiate 79RIS 52A 79CY Reclose Initiate Supervision 79DTL 67N3T OLS 67P1 67G1 67N1 TRIP LT2 LT7 TRIP 52A 81D1T PB9 OC SV16 Drive to Lockout 79DLS 79LO Drive to L...

Page 231: ... instant of the first trip operation Then for any subsequent trip operations in the auto reclose cycle the SEL 351R is in the reclose cycle state 79CY logical 1 and the SEL 351R successfully initiates reclosing for each trip operation Because of factory setting 79RIS 52A 79CY successful reclose initiation in the reclose cycle state 79CY logical 1 is not dependent on the recloser status 52A This al...

Page 232: ...oved from ULCL setting unlatch close see Figures 1 21 and 6 1 and accompanying explanation when 79RI 52A Making this change to the ULCL setting keeps the SEL 351R from going to lockout prematurely for an instantaneous trip after an auto reclose by not turning CLOSE off until the circuit breaker status indication tells the relay that the breaker is closed The circuit breaker anti pump circuitry sho...

Page 233: ...see Additional Settings Example in the preceding setting 79RI reclose initiation discussion Then the drive to lockout condition overlaps reclose initiation and the SEL 351R stays in lockout after the breaker trips open When 79DLS logical 1 the reclosing relay goes to the last shot if the shot counter is not at a shot value greater than or equal to the calculated last shot see Reclosing Relay Shot ...

Page 234: ...1 still the 79SKP setting is still processed In such conditions open interval timing has not yet started timing if 79SKP logical 1 the relay increments the shot counter to the next shot and then loads the open interval time corresponding to the new shot see Table 6 3 If the new shot turns out to be the last shot no open interval timing takes place and the relay goes to the Lockout State if the cir...

Page 235: ...les In Table 6 5 note that the open interval 1 time setting 79OI1 is a short time while the following open interval 2 time setting 79OI2 is significantly longer For a high magnitude fault greater than the phase instantaneous overcurrent element 50P2 threshold open interval 1 time is skipped and open interval timing proceeds on the following open interval 2 time Once the shot is incremented to shot...

Page 236: ...ing 79BRS The block reset timing setting 79BRS keeps the reset timer from timing Depending on the reclosing relay state the reset timer can be loaded with either reset time 79RSD Reset Time from Reclose Cycle or 79RSLD Reset Time from Lockout Depending on how setting 79BRS is set none one or both of these reset times can be controlled If the reset timer is timing and then 79BRS asserts to 79BRS lo...

Page 237: ...reaching SEL 351R fast curves from tripping for faults beyond the downstream recloser control This is accomplished by incrementing the shot counter and controlling fast curves with resultant shot counter elements Refer to Figure 6 8 In order for the sequence coordination logic in SEL 351R 1 to increment the shot counter by one count to keep in step with the operation of downstream SEL 351R 2 all t...

Page 238: ... I I 51P1 t Fast curve phase 51P1T SEL 351R 1 Delay curve phase SEL 351R 2 Delay curve phase SEL 351R 1 SEL 351R 1 SEL 351R 2 DWG M351R089 1 1 Figure 6 8 SEL 351R Recloser Controls in Series Requiring Sequence Coordination Reclose Supervision Setting 79CLS See Reclose Supervision Logic earlier in this section ...

Page 239: ...hanged or Active Setting Group Changed 7 11 Latch Control Switches 7 11 Latch Control Switch Application Ideas 7 13 Reclosing Relay Enable Disable Setting Example 7 13 Feedback Control 7 14 Rising Edge Operators 7 14 Use a Remote Bit Instead to Enable Disable the Reclosing Relay 7 16 Latch Control Switch States Retained 7 17 Power Loss 7 17 Settings Change or Active Setting Group Change 7 17 Reset...

Page 240: ...tus Indication 7 37 Circuit Breaker Status Indication 7 37 Traditional Indicating Panel Lights Replaced With Rotating Default Display 7 37 General Operation of Rotating Default Display Settings 7 38 Settings Examples 7 38 Reclosing Relay Status Indication 7 38 Reclosing Relay Enabled 7 39 Reclosing Relay Disabled 7 39 Circuit Breaker Status Indication 7 39 Circuit Breaker Closed 7 39 Circuit Break...

Page 241: ...le 7 10 Mnemonic Settings for Breaker Wear Counters on the Rotating Default Display 7 50 Table 7 11 Mnemonic Settings for Time Overcurrent TOC Element Pickups on the Rotating Default Display 7 51 FIGURES Figure 7 1 Example Operation of Optoisolated Inputs IN101 Through IN106 7 2 Figure 7 2 Circuit Breaker Auxiliary Contact and Reclose Enable Switch Connected to Optoisolated Inputs IN101 and IN102 ...

Page 242: ...Time Line 7 25 Figure 7 21 Rotating Selector Switch Connected to Inputs IN101 IN102 and IN103 for Active Setting Group Switching 7 26 Figure 7 22 Active Setting Group Switching with Rotating Selector Switch Time Line 7 28 Figure 7 23 SELOGIC Control Equation Variables Timers SV1 SV1T Through SV6 SV6T 7 30 Figure 7 24 SELOGIC Control Equation Variables Timers SV7 SV7T Through SV16 SV16T 7 30 Figure...

Page 243: ...IC control equation settings to realize numerous protection and control schemes Relay Word bits and SELOGIC control equation setting examples are used throughout this section See Section 9 Setting the SEL 351R Recloser Control for more information on Relay Word bits and SELOGIC control equation settings See Section 10 Serial Port Communications and Commands for more information on viewing and maki...

Page 244: ... cycles 13 16 0 8125 The AC setting e g IN101D AC allows the optoisolated inputs to sense ac voltage correctly In this AC operation mode an optoisolated input has a maximum pickup time of 0 75 cycles and a maximum dropout time of 1 25 cycles for the application or removal respectively of ac voltage on the input For most dc applications the input pickup dropout debounce timers should be set in 1 4 ...

Page 245: ...able timer and use the output of the timer for input functions see Figure 7 23 and Figure 7 24 Input Functions There are no optoisolated input settings such as IN101 IN102 Optoisolated inputs IN101 through IN106 receive their function by the way their corresponding Relay Word bits IN101 through IN106 are used in SELOGIC control equations Settings Examples Figure 7 2 Circuit Breaker Auxiliary Conta...

Page 246: ...Using Relay Word bit IN101 for the circuit breaker status setting 52A does not prevent using Relay Word bit IN101 in other SELOGIC control equation settings Input IN102 In this example Relay Word bit IN102 is used in the SELOGIC control equation drive to lockout setting 79DTL IN102 NOT IN102 Connect input IN102 to a reclose enable switch When the reclose enable switch is open input IN102 is deener...

Page 247: ... in Figure 7 3 is a Relay Word bit LBn called a local bit where n 1 through 8 1 through 16 for the SEL 351R 2 The local control switch logic in Figure 7 3 repeats for each local bit LB1 through LB8 LB1 through LB16 for the SEL 351R 2 Use these local bits in SELogic control equations For a given local control switch the local control switch positions are enabled by making corresponding label settin...

Page 248: ... Section 10 Serial Port Communications and Commands Local Control Switch Types Configure any local control switch as one of the following three switch types ON OFF Switch Local bit LBn is in either the ON LBn logical 1 or OFF LBn logical 0 position Figure 7 4 Local Control Switch Configured as an ON OFF Switch OFF MOMENTARY Switch The local bit LBn is maintained in the OFF LBn logical 0 position a...

Page 249: ...l 1 4 cycle Figure 7 6 Local Control Switch Configured as an ON OFF MOMENTARY Switch Table 7 2 Correspondence Between Local Control Switch Types and Required Label Settings Local Switch Type Label NLBn Label CLBn Label SLBn Label PLBn ON OFF X X X OFF MOMENTARY X X X ON OFF MOMENTARY X X X X Disable local control switches by nulling out all the label settings for that switch see Section 9 Setting ...

Page 250: ...position not used left blank PLB3 TRIP MOMENTARY position LB4 NLB4 MANUAL CLOSE closes breaker separate from automatic reclosing CLB4 RETURN OFF position return from MOMENTARY position SLB4 ON position not used left blank PLB3 CLOSE MOMENTARY position Figure 7 7 and Figure 7 8 show local control switches with factory settings Figure 7 7 Configured Manual Trip Switch Drives Local Bit LB3 Local bit ...

Page 251: ...ation enable disable Local control switches can also be configured as ON OFF MOMENTARY switches for applications that require such Local control switches can be applied to almost any control scheme that traditionally requires front panel switches Local Control Switch States Retained Power Loss The state of each local bit LB1 through LB8 LB1 through LB16 for the SEL 351R 2 is retained if power to t...

Page 252: ...ings change i e the corresponding label settings are set the corresponding local bit starts out at logical 0 REMOTE CONTROL SWITCHES Remote control switches are operated via the serial communications port only see CON Command Control Remote Bit in Section 10 Serial Port Communications and Commands Figure 7 9 Remote Control Switches Drive Remote Bits RB1 Through RB8 RB1 Through RB16 for the SEL 351...

Page 253: ... a setting change or an active setting group change it comes back in the ON position after the change If a remote control switch is in the OFF position remote bit is a logical 0 before a settings change or an active setting group change it comes back in the OFF position after the change If settings are changed for a setting group other than the active setting group there is no interruption of the ...

Page 254: ...bit where n 1 through 8 1 through 16 for the SEL 351R 2 The latch control switch logic in Figure 7 11 repeats for each latch bit LT1 through LT8 LT1 through LT16 for the SEL 351R 2 Use these latch bits in SELOGIC control equations These latch control switches each have the following SELOGIC control equation settings SETn set latch bit LTn to logical 1 RSTn reset latch bit LTn to logical 0 If setti...

Page 255: ...act is connected to optoisolated input IN104 Each pulse of the SCADA contact changes the state of the reclosing relay The SCADA contact is not maintained just pulsed to enable disable the reclosing relay Figure 7 12 SCADA Contact Pulses Input IN4 to Enable Disable Reclosing Relay If the reclosing relay is enabled and the SCADA contact is pulsed the reclosing relay is then disabled If the SCADA con...

Page 256: ... LT1 IN104 logical 0 logical 0 If latch bit LT1 logical 1 input IN104 is routed to setting RST1 reset latch bit LT1 SET1 IN104 LT1 IN104 NOT LT1 IN104 NOT logical 1 IN104 logical 0 logical 0 RST1 IN104 LT1 IN104 logical 1 IN104 rising edge of input IN104 Rising Edge Operators Refer to Figure 7 13 and Figure 7 14 The rising edge operator in front of Relay Word bit IN104 IN104 sees a logical 0 to lo...

Page 257: ...condition occurred in the preceding processing interval causing IN104 to then deassert to logical 0 So since IN104 is now at logical 0 setting RST1 does not assert even though input IN104 remains asserted for at least a few cycles by the SCADA contact If the SCADA contact deasserts and then asserts again new rising edge see Pulse 2 in Figure 7 14 the reset input setting RST1 asserts and latch bit ...

Page 258: ...gure 7 13 SET1 RB1 LT1 rising edge of remote bit RB1 AND NOT LT1 RST1 RB1 LT1 rising edge of remote bit RB1 AND LT1 79DTL LT1 NOT LT1 drive to lockout setting Pulse remote bit RB1 to enable reclosing pulse remote bit RB1 to disable reclosing etc much like the operation of optoisolated input IN104 in the previous example Remote bits RB1 through RB8 RB1 through RB16 for the SEL 351R 2 are operated t...

Page 259: ...ther setting groups or the active setting group is changed then the states of the latch bits LT1 through LT8 LT1 through LT16 for the SEL 351R 2 are retained much like in the preceding Power Loss explanation If individual settings are changed for a setting group other than the active setting group there is no interruption of the latch bits the relay is not momentarily disabled If the individual se...

Page 260: ...or a 25 year relay service life Therefore set equations SETn and RSTn with care so continuous cyclical operation of latch bit LTn does not occur Use timers to qualify conditions set in settings SETn and RSTn If any optoisolated inputs IN101 through IN106 are used in settings SETn and RSTn the inputs have their own debounce timer that can help in providing the necessary time qualification see Figur...

Page 261: ...state of latch bit LT1 from being able to be changed at a rate faster than once every 300 cycles 5 seconds Figure 7 16 Latch Control Switch with Time Delay Feedback Controlled by a Single Input to Enable Disable Reclosing Figure 7 17 Latch Control Switch with Time Delay Feedback Operation Time Line ...

Page 262: ...ting Group 3 is the active setting group SG4 Indication that setting Group 4 is the active setting group SG5 Indication that setting Group 5 is the active setting group SG6 Indication that setting Group 6 is the active setting group For example if setting Group 4 is the active setting group Relay Word bit SG4 asserts to logical 1 and the other Relay Word bits SG1 SG2 SG3 SG5 and SG6 are all deasse...

Page 263: ... setting Group 3 still remains the active setting group With setting Group 3 as the active setting group if setting SS3 is deasserted to logical 0 and one of the other settings e g setting SS5 asserts to logical 1 the relay switches from setting Group 3 as the active setting group to another setting group e g setting Group 5 as the active setting group after qualifying time setting TGR TGR Group C...

Page 264: ...ctive Setting Group Switching Example 1 Use a single optoisolated input to switch between two setting groups in the SEL 351R In this example optoisolated input IN105 on the relay is connected to a SCADA contact in Figure 7 18 Each pulse of the SCADA contact changes the active setting group from one setting group e g setting Group 1 to another e g setting Group 4 The SCADA contact is not maintained...

Page 265: ...SV8T SS4 0 SS5 0 SS5 0 SS6 0 SS6 0 SELOGIC control equation timer input setting SV8 in Table 7 5 has logic output SV8T shown in operation in Figure 7 19 for both setting groups 1 and 4 Figure 7 19 SELOGIC Control Equation Variable Timer SV8T Used in Setting Group Switching In this example timer SV8T is used in both setting groups different timers could have been used with the same operational resu...

Page 266: ... 20 shows both setting Group 1 and setting Group 4 settings The setting Group 1 settings top of Figure 7 20 are enabled only when setting Group 1 is the active setting group and likewise for the setting Group 4 settings at the bottom of the figure Setting Group 4 is now the active setting group and Relay Word bit SG4 asserts to logical 1 After the relay has been in setting Group 4 for a time perio...

Page 267: ...ts e g IN101 IN102 and IN103 in different combinations as shown in Table 7 6 Table 7 6 Active Setting Group Switching Input Logic Input States Active IN103 IN102 IN101 Setting Group 0 0 0 Remote 0 0 1 Group 1 0 1 0 Group 2 0 1 1 Group 3 1 0 0 Group 4 1 0 1 Group 5 1 1 0 Group 6 The SEL 351R can be programmed to operate similarly Use three optoisolated inputs to switch between the six setting group...

Page 268: ...ntrol Equation Settings for Rotating Selector Switch Active Setting Group Switching SS1 IN103 IN102 IN101 NOT IN103 NOT IN102 IN101 SS2 IN103 IN102 IN101 NOT IN103 IN102 NOT IN101 SS3 IN103 IN102 IN101 NOT IN103 IN102 IN101 SS4 IN103 IN102 IN101 IN103 NOT IN102 NOT IN101 SS5 IN103 IN102 IN101 IN103 NOT IN102 IN101 SS6 IN103 IN102 IN101 IN103 IN102 NOT IN101 The settings in Table 7 7 are made in ea...

Page 269: ...ctive setting group after qualifying time setting TGR Relay Word bit SG5 logical 1 Inputs IN101 and IN103 are energized and IN102 is deenergized SS5 IN103 IN102 IN101 IN103 NOT IN102 IN101 logical 1 NOT logical 0 logical 1 logical 1 To get from position 5 to position REMOTE on the selector switch the switch passes through the positions 4 3 2 and 1 The switch is only briefly in the these positions ...

Page 270: ...ar setting group is active e g setting Group 5 when power is lost it comes back with the same setting group active when power is restored Settings Change If individual settings are changed for the active setting group or one of the other setting groups the active setting group is retained much like in the preceding Power Loss explanation If individual settings are changed for a setting group other...

Page 271: ...ontinuous cyclical changing of the active setting group does not occur Time setting TGR qualifies settings SS1 through SS6 before changing the active setting group If optoisolated inputs IN101 through IN106 are used in settings SS1 through SS6 the inputs have their own built in debounce timer that can help in providing the necessary time qualification see Figure 7 1 SELOGIC CONTROL EQUATION VARIAB...

Page 272: ...d Other Control Logic Date Code 20020215 SEL 351R Instruction Manual Figure 7 23 SELOGIC Control Equation Variables Timers SV1 SV1T Through SV6 SV6T Figure 7 24 SELOGIC Control Equation Variables Timers SV7 SV7T Through SV16 SV16T ...

Page 273: ...50P1 50N1 OUT101 SV6T retrip OUT102 SV7T breaker failure trip Figure 7 25 Dedicated Breaker Failure Scheme Created with SELOGIC Control Equation Variables Timers Note that the above SELOGIC control equation setting SV7 creates a seal in logic circuit as shown in Figure 7 25 by virtue of SELOGIC control equation setting SV7 being set equal to Relay Word bit SV7 SELOGIC control equation variable SV7...

Page 274: ...er failure initiate has to be continually asserted for a breaker failure time out Timers Reset When Power Is Lost Settings Are Changed or Active Setting Group Is Changed If power is lost to the relay settings are changed for the active setting group or the active setting group is changed then the SELOGIC control equation variables timers are reset Relay Word bits SVn and SVnT n 1 through 16 are re...

Page 275: ...r after a setting group change include the rising edge of the target group in the reset equation For example if SC1 in group 1 must be reset when going to group 2 then OR SG2 into the SC1R equation SCnI SCnD SCnR Increment Decrement Reset SELOGIC Counter rising edge detect DWG M351R175 eps Figure 7 26 SELOGIC Counter The value of each SELOGIC counter is accessible through a comparison statement wi...

Page 276: ...d bit OUTm m 101 through 107 to logical 1 causes the energization of the corresponding output contact OUTm coil Depending on the contact type a or b the output contact closes or opens as demonstrated in Figure 7 27 An a type output contact is open when the output contact coil is deenergized and closed when the output contact coil is energized A b type output contact is closed when the output conta...

Page 277: ...put contact coil The Relay Word bit ALARM is deasserted to logical 0 when the relay is operational When the serial port command PULSE ALARM is executed the ALARM Relay Word bit momentarily asserts to logical 1 Also when the relay enters Access Level 2 the ALARM Relay Word bit momentarily asserts to logical 1 and the ALARM output contact coil is deenergized momentarily Notice in Figure 7 27 that al...

Page 278: ...peration ROTATING DEFAULT DISPLAY The rotating default display on the relay front panel replaces indicating panel lights Traditional indicating panel lights are turned on and off by circuit breaker auxiliary contacts front panel switches SCADA contacts etc They indicate such conditions as circuit breaker open closed reclosing relay enabled disabled ...

Page 279: ...ation In Figure 7 28 the 79 ENABLED panel light illuminates when the 79 Enable switch is closed When the 79 Enable switch is open the 79 ENABLED panel light extinguishes and it is understood that the reclosing relay is disabled Circuit Breaker Status Indication In Figure 7 28 the BREAKER CLOSED panel light illuminates when the 52a circuit breaker auxiliary contact is closed When the 52a circuit br...

Page 280: ...T see Section 9 Setting the SEL 351R Recloser Control and Section 10 Serial Port Communications and Commands These text settings are displayed on the SEL 351R front panel display on a 2 second rotation see Rotating Default Display in Section 11 Additional Front Panel Interface Details for more specific operation information The following factory settings examples use optoisolated inputs IN101 and ...

Page 281: ... 79 ENABLED Reclosing Relay Disabled In Figure 7 29 optoisolated input IN102 is deenergized to disable the reclosing relay resulting in DP1 IN102 logical 0 This results in the display of corresponding text setting DP1_0 on the front panel display 79 DISABLED Circuit Breaker Status Indication Make SELOGIC control equation display point setting DP2 DP2 IN101 Make corresponding complementary text set...

Page 282: ...not its complement set only one of the text settings For example to display just the breaker closed condition but not the breaker open condition make the following settings DP2 IN101 52a circuit breaker auxiliary contact connected to input IN101 see Figure 7 29 DP2_1 BREAKER CLOSED displays when DP2 logical 1 DP2_0 blank Circuit Breaker Closed In Figure 7 29 optoisolated input IN101 is energized w...

Page 283: ...04 This can also be realized with the following settings DP5 0 set directly to logical 0 DP5_1 blank DP5_0 FEEDER 1204 displays when DP5 logical 0 This results in the continual display of text setting DP5_0 on the front panel display FEEDER 1204 Active Setting Group Switching Considerations The SELOGIC control equation display point setting DPn where n 1 through 8 1 through 16 for the SEL 351R 2 a...

Page 284: ...roup is switched from setting Group 1 to 4 Switch to Setting Group 4 as the Active Setting Group When setting Group 4 is the active setting group the reclosing relay is always disabled and optoisolated input IN102 has no control over the reclosing relay The text settings cannot be changed they are used in all setting groups but the SELOGIC control equation settings can be changed SELOGIC control e...

Page 285: ...ents IA IB IC and IN make the following text SET T command and logic SET L command settings SET T SET L DP1_0 IAPK DP1 0 DP2_0 IBPK DP2 0 DP3_0 ICPK DP3 0 DP4_0 INPK DP4 0 Logic settings DP1 through DP4 above are permanently set to logical 0 in this example This causes the corresponding DPn_0 value to permanently rotate in the display the mnemonics in the DPn_0 settings indicate the value displaye...

Page 286: ...xA yyy If the magnitude is less than 10 it displays with three digits behind the decimal point IA 8 32A 0 three digits behind the decimal point If the magnitude is greater than or equal to 10 it displays with two or less digits behind the decimal point IA 52 37A 0 IB 635 8A 120 two digits behind the decimal point one digit behind the decimal point IC 1173A 120 no digits behind the decimal point Th...

Page 287: ...ion of the information available through respective individual display choices A PH TRIPS 752 WEAR A 72 corresponding mnemonic APHTR corresponding mnemonic WEARA B PH TRIPS 829 WEAR B 78 corresponding mnemonic BPHTR corresponding mnemonic WEARB B PH TRIPS 861 WEAR B 81 corresponding mnemonic CPHTR corresponding mnemonic WEARC Time Overcurrent Element Pickup Values on the Rotating Default Display T...

Page 288: ...y Text To have some text precede the time overcurrent element pickup in the rotating default display to define what the displayed pickup is make settings as follows again the phase time overcurrent element pickup example SET SET T SET L CTR 1000 DP1_0 PHASE TRIPS AT DP1 0 51P1P 0 5 DP2_0 51P1P DP2 0 then the following gets displayed PHASE TRIPS AT 500 00 A pri With the text strings displaying on o...

Page 289: ... is computed from setting CTRN x setting 51N1P 100 x 0 50 50 00 Note Typically the CTR and CTRN settings would have the same value e g CTR 1000 and CTRN 1000 in a recloser application channel IN wired residually with the phase current inputs factory standard for the SEL 351R The above examples where CTR 1000 and CTRN 100 are for demonstration purposes only Table 7 8 Mnemonic Settings for Metering ...

Page 290: ... demand current IAPK I A P E AK x x x x IA peak current IBDEM I B D EM x x x x IB demand current IBPK I B P E AK x x x x IB peak current ICDEM I C D EM x x x x IC demand current ICPK I C P E AK x x x x IC peak current INDEM I N D E M x x x x IN demand current INPK I N P E AK x x x x IN peak current IGDEM I G D E M x x x x IG demand current IGPK I G P E AK x x x x IG peak current 3I2DEM 3 I 2 D EM ...

Page 291: ...out MVR3DO MVR 3 O D EM x x x x three phase demand megavars out MVR3PO MV R 3 O P K x x x x three phase peak megavars out MWHAI MWh A I N x x x x x A megawatt hours in MWHAO MWh A OU T x x x x x A megawatt hours out MWHBI MWh B I N x x x x x B megawatt hours in MWHBO MWh B OU T x x x x x B megawatt hours out MWHCI MWh C I N x x x x x C megawatt hours in MWHCO MWh C OU T x x x x x C megawatt hours ...

Page 292: ... T R L T R I P S x x x x x internal trip count OPSCNTR O P S C N T R x x x x x internal trip count CTRLIA C T R L I A x x x x x k A internal trip Σ IA CTRLIB C T R L I B x x x x x k A internal trip Σ IB CTRLIC C T R L I C x x x x x k A internal trip Σ IC EXTTR E X T T R I P S x x x x x external trip count EXTIA E X T I A x x x x x k A external trip Σ IA EXTIB E X T I B x x x x x k A external trip ...

Page 293: ...nal detail Relay Word Bits PINBD PINC PINE and PINF all debounced for three quarter cycles SELOGIC control equations RCTR and RCCL 22000 µF capacitor and portion of the terminal block see subsection Battery System Monitor in Section 8 Breaker Recloser Monitor Battery System Monitor Metering and Load Profile Functions for information on the application of the capacitor When a monitored trip or clos...

Page 294: ... the trip circuit differs for motor operated Cooper reclosers as compared to Figure 7 30 requiring a few SEL 351R settings to be modified Refer to SEL Application Guide AG99 10 Change Logic in SEL 351R Recloser Control for Motor Operated Reclosers Figure 7 30 Recloser Trip and Close Circuit Connections ...

Page 295: ...eset Breaker Monitor Information 8 12 Via Serial Port 8 12 Via Front Panel 8 13 Determination of Relay Initiated Trips and Externally Initiated Trips 8 13 Factory Default Setting Example 8 14 Additional Example 8 14 Battery System Monitor 8 15 Battery System Operation 8 15 SEL 351R Puts Itself To Sleep 8 16 Keep 12 Vdc on While SEL 351R is Asleep 8 17 Wake Up the SEL 351R 8 17 Battery System Diagn...

Page 296: ...r 8 35 TABLES Table 8 1 Access Level 2 Global Settings for Contact Wear Monitor 8 2 Table 8 2 Access Level E EZ Global Settings for Contact Wear Monitor 8 3 Table 8 3 Parameters Used to Automatically Set Contact Wear Monitor 8 3 Table 8 4 Breaker Maintenance Information for a 25 kV Circuit Breaker 8 5 Table 8 5 Demand Meter Settings and Settings Range 8 26 FIGURES Figure 8 1 Plotted Breaker Mainte...

Page 297: ...ercent contact wear on a per pole basis The SEL 351R updates and stores the contact wear information and the number of trip operations in non volatile memory You can view this information through the front panel display and by communicating with the SEL 351R through any serial communication port with a computer Individual phase Breaker Contact Wear bits BCWA BCWB and BCWC assert when the contact w...

Page 298: ... EZ global settings override the corresponding Access Level 2 global settings when the Access Level E EZ global setting Recloser Wear Monitor AUTO Y N is set to AUTO or N Table 8 1 Access Level 2 Global Settings for Contact Wear Monitor Setting Definition Range EBMON Enable Breaker Recloser Monitor Y Yes or N No COSP1 Close Open set point 1 maximum 0 65000 close open operations COSP2 Close Open se...

Page 299: ...A20B VAC2 20000 VSO12 VAC2 12000 VSO16 VAC2 16000 Table 8 3 Parameters Used to Automatically Set Contact Wear Monitor Table 8 1 Settings Recloser Type OIL Recloser Type VAC1 Recloser Type VAC2 EBMON Y Y Y COSP1 10000 10000 10000 COSP2 20 40 80 COSP3 20 40 80 KASP1 Interrupt Rating 63 Interrupt Rating 40 Interrupt Rating 25 KASP2 Interrupt Rating Interrupt Rating Interrupt Rating KASP3 Interrupt Ra...

Page 300: ...ion BKMON asserts Set the logic for this function using the Access Level 2 SET L command The default setting is BKMON TRIP which causes the contact wear monitor to integrate and increment each time the SEL 351R trip logic asserts For more information on the SET G and SET L commands see Table 9 1 in Section 9 Setting the SEL 351R Recloser Also refer to BRE Command Breaker Monitor Data and BRE n Com...

Page 301: ...n operation The breaker maintenance information in Table 8 4 is plotted in Figure 8 1 Connect the plotted points in Figure 8 1 for a breaker maintenance curve To estimate this breaker maintenance curve in the SEL 351R contact wear monitor three set points are entered Set Point 1 maximum number of close open operations with corresponding current interruption level Set Point 2 number of close open o...

Page 302: ... Breaker Recloser Monitor Battery System Monitor Date Code 20020215 Metering and Load Profile Functions SEL 351R Instruction Manual Figure 8 1 Plotted Breaker Maintenance Points for a 25 kV Circuit Breaker ...

Page 303: ...ker Maintenance Curve Details In Figure 8 2 note that set points KASP1 COSP1 and KASP3 COSP3 are set with breaker maintenance information from the two extremes in Table 8 4 and Figure 8 1 In this example set point KASP2 COSP2 provides an intermediate breaker maintenance point in the breaker maintenance information in Table 8 4 and Figure 8 1 Set point KASP2 COSP2 should be set to provide the best ...

Page 304: ...Recloser Monitor Battery System Monitor Date Code 20020215 Metering and Load Profile Functions SEL 351R Instruction Manual Figure 8 2 SEL 351R Recloser Control Breaker Maintenance Curve for a 25 kV Circuit Breaker ...

Page 305: ...to read in current values The acquired current values are then applied to the breaker maintenance curve and the breaker monitor accumulated currents trips see references in previous paragraph In the factory default settings the SELOGIC control equation breaker monitor initiation setting is set BKMON TRIP TRIP is the logic output of Figure 5 1 Refer to Figure 8 3 When BKMON asserts Relay Word bit T...

Page 306: ...t value changes from 7 0 kA to 2 5 kA 2 5 kA is interrupted 290 times 290 close open operations 480 190 pushing the breaker maintenance curve from the 10 wear level to the 25 wear level Compare the 100 and 25 curves and note that for a given current value the 25 curve has only 1 4 of the close open operations of the 100 curve 25 to 50 Breaker Wear Refer to Figure 8 6 The current value changes from...

Page 307: ...nitor 8 11 Metering and Load Profile Functions SEL 351R Instruction Manual Figure 8 4 Breaker Monitor Accumulates 10 Wear Figure 8 5 Breaker Monitor Accumulates 25 Wear Figure 8 6 Breaker Monitor Accumulates 50 Wear Figure 8 7 Breaker Monitor Accumulates 100 Wear ...

Page 308: ...drive the relay to lockout the next time the relay trips 79DTL TRIP BCW View or Reset Breaker Monitor Information Accumulated breaker wear operations data are retained if the relay loses power or the breaker monitor is disabled setting EBMON N The accumulated data can only be reset if the BRE R command is executed see the following discussion on the BRE R command Via Serial Port See BRE Command Br...

Page 309: ...E R command resets the accumulated values and the percent wear for all three phases For example if contact wear has reached the 100 wear level for A phase the corresponding Relay Word bit BCWA asserts BCWA logical 1 Execution of the BRE R command resets the wear levels for all three phases back to 0 and consequently causes Relay Word bit BCWA to deassert BCWA logical 0 Via Front Panel The informat...

Page 310: ...rips or externally initiated trips this same information is routed to the breaker maintenance curve for continued breaker wear integration see Figure 8 3 through Figure 8 7 Factory Default Setting Example Previously as discussed the SELOGIC control equation breaker monitor initiation factory default setting is BKMON TRIP Thus any new assertion of BKMON is classified as a recloser control trip and ...

Page 311: ...r the SET G global settings commands See the Settings section in the SEL 351R Quick Start Installation and User s Guide for more information on the EZ global settings Battery System Operation The two series connected 12 V 8 0 Ah sealed lead acid batteries create a 24 Vdc battery system that powers the SEL 351R and provides trip and close power to the recloser when the 120 Vac source is deenergized...

Page 312: ...ous or fast curve operation Figure 7 30 shows how the capacitor fits in to the 24 Vdc trip close system it is effectively in parallel with the 24 Vdc supply SEL 351R Puts Itself To Sleep If the 120 Vac source is deenergized the SEL 351R operates off of battery power and continually calculates remaining battery capacity as discussed previously The SEL 351R puts itself to sleep during an extended ou...

Page 313: ...al setting SET G command default is CHWAKE ABCD When the SEL 351R receives this character string the SEL 351R wakes up and resumes its protection and control functions The wake up message feature is intended to be used with remote communication via a radio connected to the Wake up port The SEL 351R includes a 12 Vdc output to supply a radio see preceding subsection Keep 12 Vdc on While SEL 351R is...

Page 314: ... new screen appears with BTT battery test as one of the choices Using the secondary function arrow pushbuttons move the underscore to BTT To test the battery press the secondary function SELECT pushbutton The SEL 351R responds with one of the following results 1 If the battery monitor charger has a problem the following message is displayed Battery Charger Board FAILED The BATTERY PROBLEM LED alre...

Page 315: ... discharging the battery load test proceeds and the following message is displayed Battery test initiated Duration 5 seconds Battery test state is OK FAILED The periods appear on each consecutive line at each second of the 5 second battery load test At the end of the test OK or FAILED is displayed If the battery fails the 1 A load test same criterion as described in the preceding Automatic Battery...

Page 316: ... discharge FAIL battery monitor charger has failed or communications with the battery monitor charger are temporarily interrupted CAP 0 to 100 battery charge level independent of temperature HRS_LFT hh mm hours and minutes left to run on battery in discharge mode before the SEL 351R puts itself to sleep dependent on setting Battery capacity for sleep 0 100 Shows XX XX if battery is charging 5V_PSB...

Page 317: ...eactive power per phase and three phase power factor current and voltage sequence components and frequency If you need accurate voltage and power metering you must connect three phase voltage to the control from a set of potential instrument transformers You use the EZ Level SET EZ command to set the PT Ratio to reflect the ratio of these potential instrument transformers If you connect only singl...

Page 318: ...set with the Access Level 2 enable setting EDEM THM Thermal Demand Meter or EDEM ROL Rolling Demand Meter The demand metering settings in Table 8 5 are available via the Access Level 2 SET command see Table 9 1 in Section 9 Setting the SEL 351R Recloser Control and also Settings Sheet 10 of 28 at the end of Section 9 Also refer to MET D Demand Metering in MET Command Metering Data in Section 10 Se...

Page 319: ...215 Breaker Recloser Monitor Battery System Monitor 8 23 Metering and Load Profile Functions SEL 351R Instruction Manual Figure 8 9 Response of Thermal and Rolling Demand Meters to a Step Input setting DMTC 15 minutes ...

Page 320: ... general since voltage VC across the capacitor in Figure 8 10 cannot change instantaneously the thermal demand meter response is not immediate either for the increasing or decreasing applied instantaneous current The thermal demand meter response time is based on the demand meter time constant setting DMTC see Table 8 5 Note in Figure 8 9 the thermal demand meter response middle is at 90 0 9 per u...

Page 321: ... following is a step by step calculation of the rolling demand response example in Figure 8 9 bottom Time 0 Minutes Presume that the instantaneous current has been at zero for quite some time before Time 0 minutes or the demand meters were reset The three 5 minute intervals in the sliding time window at Time 0 minutes each integrate into the following 5 minute totals 5 Minute Totals Corresponding ...

Page 322: ... Totals Corresponding 5 Minute Interval 1 0 per unit 0 to 5 minutes 1 0 per unit 5 to 10 minutes 1 0 per unit 10 to 15 minutes 3 0 per unit Rolling demand meter response at Time 15 minutes 3 0 3 1 0 per unit Demand Meter Settings Table 8 5 Demand Meter Settings and Settings Range Setting Definition Range EDEM Demand meter type THM thermal ROL rolling DMTC Demand meter time constant 5 10 15 30 or 6...

Page 323: ...R demand values are also available as stated at the beginning of this subsection The demand current pickup settings in Table 8 5 are applied to demand current meter outputs as shown in Figure 8 11 For example when residual ground demand current IG DEM goes above corresponding demand pickup GDEMP Relay Word bit GDEM asserts to logical 1 Use these demand current logic outputs PDEM NDEM GDEM and QDEM...

Page 324: ...rent IG use Relay Word bit GDEM to detect the residual ground unbalance demand current IG DEM and effectively raise the pickup of the residual ground time overcurrent element 51G1T This is accomplished with the following settings from Table 8 5 pertinent residual ground overcurrent element settings and SELOGIC control equation torque control setting 51G1TC EDEM THM DMTC 5 GDEMP 1 0 51G1P 1 50 50G5...

Page 325: ...e slow moving general trends Residual Ground Demand Current Goes Above Pickup GDEMP When unbalance current IG increases unbalance demand current IG DEM follows going above corresponding demand pickup GDEMP 1 00 A secondary and Relay Word bit GDEM asserts to logical 1 This results in SELOGIC control equation torque control setting 51G1TC being in the state 51G1TC GDEM GDEM 50G5 NOT GDEM GDEM 50G5 N...

Page 326: ...ER pushbutton See the METER pushbutton in the Pushbutton Primary Functions subsection in the Front Panel Interface section of the SEL 351R Quick Start Installation and User s Guide Demand Metering Updating and Storage The SEL 351R updates demand values approximately every 2 seconds The relay stores peak demand values to nonvolatile storage once per day it overwrites the previous stored value if it...

Page 327: ...will restore the energy values saved at 23 50 hours on the previous day Maximum Minimum Metering View or Reset Maximum Minimum Metering Information Via Serial Port See MET M Maximum Minimum Metering in subsection MET Command Metering Data in Section 10 Serial Port Communications and Commands The MET M command displays maximum minimum metering for the following values Currents IA B C N Input curren...

Page 328: ...SELOGIC control equation setting FAULT also has control over front panel target LEDs A B and C see Front Panel Target LEDs in Section 5 Trip and Target Logic The metering value is above the previous maximum or below the previous minimum for 2 cycles For voltage values the voltage is above 13 V secondary For current values the currents are above 0 05 A secondary 1 A nominal Megawatt and megavar val...

Page 329: ... 3 phase megaWATT hours out MVRHAI MVRHBI MVRHCI MVRH3I Phase and 3 phase megaVAR hours in MVRHAO MVRHBO MVRHCO MVRH3O Phase and 3 phase megaVAR hours out Labels are entered into the setting either comma or space delimited but are displayed as space delimited Load profiling is disabled if the LDLIST setting is empty i e set to NA or 0 which is displayed as LDLIST 0 The load buffer is stored in non...

Page 330: ...ith the oldest row row 33 at the beginning top of the report and the latest row row 10 at the end bottom of the report Chronological progression through the report is down the page and in descending row number LDP 47 22 If LDP is entered with two numbers following it 47 and 22 in this example 47 22 all the rows between and including rows 47 and 22 are displayed if they exist They display with the ...

Page 331: ... 7 23 96 ENTER STX FEEDER 1 Date mm dd yy Time hh mm ss sss STATION A FID SEL 351 R105 VM D980417 CID ABCD DATE TIME label1 label2 label3 label4 label5 labeln 512 07 23 96 07 00 35 xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx 511 07 23 96 08 00 15 xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx 510 07 23 96 09 00 01 xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx xxxxx...

Page 332: ......

Page 333: ...urve U2 9 5 Figure 9 3 U S Very Inverse Curve U3 9 5 Figure 9 4 U S Extremely Inverse Curve U4 9 5 Figure 9 5 U S Short Time Inverse Curve U5 9 6 Figure 9 6 I E C Class A Curve Standard Inverse C1 9 6 Figure 9 7 I E C Class B Curve Very Inverse C2 9 6 Figure 9 8 I E C Class C Curve Extremely Inverse C3 9 7 Figure 9 9 I E C Long Time Inverse Curve C4 9 7 Figure 9 10 I E C Short Time Inverse Curve C...

Page 334: ......

Page 335: ... 3 or F 28 SET EZ n EZ Recloser Control Traditional recloser control settings e g minimum trips fast delay curves reclose intervals for settings group n n 1 2 3 4 5 6 1 3 SET FZ EZ Global Automatic recloser monitor battery monitor etc 3 located at the end of this section located at the end of the Settings section in the SEL 351R Quick Start Installation and User s Guide View settings with the resp...

Page 336: ... on serial port communications and access levels The SET EZ n and SET FZ commands in Table 9 1 operate at Access Level E screen prompt All other SET commands in Table 9 1 operate at Access Level 2 screen prompt To change a specific setting enter the command SET m n s TERSE where m L G R T P EZ or FZ parameter m is not entered for the Group settings n group 1 6 or port 1 2 3 F The SEL 351R selects ...

Page 337: ...nges are made to Global EZ Global SER Text or Port settings see Table 9 1 the SEL 351R is disabled while it saves the new settings If changes are made to the EZ Recloser Control Group or Logic settings for the active setting group see Table 9 1 the SEL 351R is disabled while it saves the new settings The ALARM contact closes momentarily for b contact opens for an a see Figure 7 27 and the CONTROL ...

Page 338: ...963 3 88 M 2 1 tp TD 0 0352 5 67 M2 1 tr TD 3 88 1 M 2 tr TD 5 67 1 M2 U S Short Time Inverse Curve U5 tp TD 0 00262 0 00342 M 0 02 1 tr TD 0 323 1 M 2 I E C Class A Curve Standard Inverse C1 I E C Class B Curve Very Inverse C2 tp TD 0 14 M 0 02 1 tp TD 13 5 M 1 tr TD 13 5 1 M 2 tr TD 47 3 1 M 2 I E C Class C Curve Extremely Inverse C3 I E C Long Time Inverse Curve C4 tp TD 80 0 M 2 1 tp TD 120 0 ...

Page 339: ...etting the SEL 351R Recloser Control 9 5 SEL 351R Instruction Manual Figure 9 1 U S Moderately Inverse Curve U1 Figure 9 2 U S Inverse Curve U2 Figure 9 3 U S Very Inverse Curve U3 Figure 9 4 U S Extremely Inverse Curve U4 ...

Page 340: ...e SEL 351R Recloser Control Date Code 20020215 SEL 351R Instruction Manual Figure 9 5 U S Short Time Inverse Curve U5 Figure 9 6 I E C Class A Curve Standard Inverse C1 Figure 9 7 I E C Class B Curve Very Inverse C2 ...

Page 341: ...0215 Setting the SEL 351R Recloser Control 9 7 SEL 351R Instruction Manual Figure 9 8 I E C Class C Curve Extremely Inverse C3 Figure 9 9 I E C Long Time Inverse Curve C4 Figure 9 10 I E C Short Time Inverse Curve C5 ...

Page 342: ...9 8 Setting the SEL 351R Recloser Control Date Code 20020215 SEL 351R Instruction Manual Figure 9 11 Recloser Control Response Curves A C N and W ...

Page 343: ...Date Code 20020215 Setting the SEL 351R Recloser Control 9 9 SEL 351R Instruction Manual Figure 9 12 Recloser Control Response Curves B R 2 and 3 ...

Page 344: ...9 10 Setting the SEL 351R Recloser Control Date Code 20020215 SEL 351R Instruction Manual Figure 9 13 Recloser Control Response Curves D 8PLUS and 16 ...

Page 345: ...Date Code 20020215 Setting the SEL 351R Recloser Control 9 11 SEL 351R Instruction Manual Figure 9 14 Recloser Control Response Curves F H J and 1 ...

Page 346: ...9 12 Setting the SEL 351R Recloser Control Date Code 20020215 SEL 351R Instruction Manual Figure 9 15 Recloser Control Response Curves G V 6 and 13 ...

Page 347: ...Date Code 20020215 Setting the SEL 351R Recloser Control 9 13 SEL 351R Instruction Manual Figure 9 16 Recloser Control Response Curves E P and 18 ...

Page 348: ...9 14 Setting the SEL 351R Recloser Control Date Code 20020215 SEL 351R Instruction Manual Figure 9 17 Recloser Control Response Curves KG Y Z and 5 ...

Page 349: ...Date Code 20020215 Setting the SEL 351R Recloser Control 9 15 SEL 351R Instruction Manual Figure 9 18 Recloser Control Response Curves KP M T and 17 ...

Page 350: ...9 16 Setting the SEL 351R Recloser Control Date Code 20020215 SEL 351R Instruction Manual Figure 9 19 Recloser Control Response Curves 4 9 11 and 14 ...

Page 351: ...Date Code 20020215 Setting the SEL 351R Recloser Control 9 17 SEL 351R Instruction Manual Figure 9 20 Recloser Control Response Curves L 7 8 and 15 ...

Page 352: ...0C2 50A3 50B3 3 50C3 50A4 50B4 50C4 50AB1 50BC1 50CA1 50AB2 4 50BC2 50CA2 50AB3 50BC3 50CA3 50AB4 50BC4 50CA4 5 50A 50B 50C 51P1 51P1T 51P1R 51N1 51N1T 6 51N1R 51G1 51G1T 51G1R 51P2 51P2T 51P2R 51N2 7 51N2T 51N2R 51G2 51G2T 51G2R 51Q 51QT 51QR 8 50P1 50P2 50P3 50P4 50N1 50N2 50N3 50N4 9 67P1 67P2 67P3 67P4 67N1 67N2 67N3 67N4 10 67P1T 67P2T 67P3T 67P4T 67N1T 67N2T 67N3T 67N4T 11 50G1 50G2 50G3 50G...

Page 353: ...HLP 46 HLG CLP RPP RPG RPS SEQC 3PHV GTP 471 RMB8A RMB7A RMB6A RMB5A RMB4A RMB3A RMB2A RMB1A 48 1 TMB8A TMB7A TMB6A TMB5A TMB4A TMB3A TMB2A TMB1A 491 RMB8B RMB7B RMB6B RMB5B RMB4B RMB3B RMB2B RMB1B 501 TMB8B TMB7B TMB6B TMB5B TMB4B TMB3B TMB2B TMB1B 51 1 LBOKB CBADB RBADB ROKB LBOKA CBADA RBADA ROKA 52 53 54 55 56 50NF 50NR 32NF 32NR DCONN DDATA 57 58 2 LB9 LB10 LB11 LB12 LB13 LB14 LB15 LB16 592 R...

Page 354: ...rcurrent element B phase current above pickup setting 50P3P see Figure 3 1 3 50C3 Level 3 C phase instantaneous overcurrent element C phase current above pickup setting 50P3P see Figure 3 1 50A4 Level 4 A phase instantaneous overcurrent element A phase current above pickup setting 50P4P see Figure 3 1 50B4 Level 4 B phase instantaneous overcurrent element B phase current above pickup setting 50P4P...

Page 355: ...ickup setting 50PP3P see Figure 3 7 50CA3 Level 3 CA phase to phase instantaneous overcurrent element CA phase to phase current above pickup setting 50PP3P see Figure 3 7 50AB4 Level 4 AB phase to phase instantaneous overcurrent element AB phase to phase current above pickup setting 50PP4P see Figure 3 7 50BC4 Level 4 BC phase to phase instantaneous overcurrent element BC phase to phase current ab...

Page 356: ...ting 51P2P for phase time overcurrent element 51P2T see Figure 3 15 Testing Control 51P2T Phase time overcurrent element 51P2T timed out see Figure 3 15 Tripping 51P2R Phase time overcurrent element 51P2T reset see Figure 3 15 Testing 51N2 Neutral ground current channel IN above pickup setting 51N2P for neutral ground time overcurrent element 51N2T see Figure 3 17 Testing Control 7 51N2T Neutral g...

Page 357: ...ound instantaneous overcurrent element neutral ground current channel IN above pickup setting 50N2P see Figure 3 8 50N3 Level 3 neutral ground instantaneous overcurrent element neutral ground current channel IN above pickup setting 50N3P see Figure 3 8 50N4 Level 4 neutral ground instantaneous overcurrent element neutral ground current channel IN above pickup setting 50N4P see Figure 3 8 9 67P1 Le...

Page 358: ...e time overcurrent element 67N2T timed out derived from 67N2 see Figure 3 8 67N3T Level 3 neutral ground definite time overcurrent element 67N3T timed out derived from 67N3 see Figure 3 8 67N4T Level 4 neutral ground definite time overcurrent element 67N4T timed out derived from 67N4 see Figure 3 8 11 50G1 Level 1 residual ground instantaneous overcurrent element residual ground current above pick...

Page 359: ...ent derived from 50G3 see Figure 3 10 67G4 Level 4 residual ground instantaneous overcurrent element derived from 50G4 see Figure 3 10 67Q1 Level 1 negative sequence instantaneous overcurrent element derived from 50Q1 see Figure 3 12 Testing Control 67Q2 Level 2 negative sequence instantaneous overcurrent element derived from 50Q2 see Figure 3 12 67Q3 Level 3 negative sequence instantaneous overcu...

Page 360: ...e current above pickup setting 50P5P see Figure 3 2 Tripping Control 50P6 Level 6 phase instantaneous overcurrent element maximum phase current above pickup setting 50P6P see Figure 3 2 50N5 Level 5 neutral ground instantaneous overcurrent element neutral ground current channel IN above pickup setting 50N5P see Figure 3 9 50N6 Level 6 neutral ground instantaneous overcurrent element neutral ground...

Page 361: ...enable for negative sequence voltage polarized directional element for ground see Figures 4 4 4 5 and 4 8 32NE Internal enable for zero sequence voltage polarized neutral current directional element see Figures 4 4 4 7 and 4 11 32QE Internal enable for negative sequence voltage polarized neutral current directional element see Figures 4 4 4 5 4 16 and 4 17 16 F32P R32P F32Q R32Q F32QG R32QG Forwar...

Page 362: ... phase overcurrent elements see Figures 4 19 and 4 21 32QF Forward directional control routed to negative sequence overcurrent elements see Figures 4 19 and 4 20 32QR Reverse directional control routed to negative sequence overcurrent elements see Figures 4 19 and 4 20 32GF Forward directional control routed to residual ground overcurrent elements see Figures 4 4 4 12 and 4 14 32GR Reverse directi...

Page 363: ...ltage above pickup setting 59P2P see Figure 3 21 59C2 C phase instantaneous overvoltage element C phase voltage above pickup setting 59P2P see Figure 3 21 27AB AB phase to phase instantaneous undervoltage element AB phase to phase voltage below pickup setting 27PP see Figure 3 22 27BC BC phase to phase instantaneous undervoltage element BC phase to phase voltage below pickup setting 27PP see Figur...

Page 364: ...9S2 Channel VS instantaneous overvoltage element channel VS voltage above pickup setting 59S2P see Figure 3 23 59VP Phase voltage window element selected phase voltage VP between threshold settings 25VLO and 25VHI see Figure 3 24 Testing 59VS Channel VS voltage window element channel VS voltage between threshold settings 25VLO and 25VHI see Figure 3 24 SF Slip frequency between voltages VP and VS ...

Page 365: ... maximum phase current above pickup setting 50LP see Figure 5 3 23 81D1T Level 1 definite time frequency element 81D1T timed out derived from 81D1 see Figure 3 28 Tripping Control 81D2T Level 2 definite time frequency element 81D2T timed out derived from 81D2 see Figure 3 28 81D3T Level 3 definite time frequency element 81D3T timed out derived from 81D3 see Figure 3 28 81D4T Level 4 definite time ...

Page 366: ... status Control via optoisolated inputs 25 LB1 LB2 LB3 LB4 LB5 LB6 LB7 LB8 Local Bit 1 asserted see Figure 7 3 Local Bit 2 asserted see Figure 7 3 Local Bit 3 asserted see Figure 7 3 Local Bit 4 asserted see Figure 7 3 Local Bit 5 asserted see Figure 7 3 Local Bit 6 asserted see Figure 7 3 Local Bit 7 asserted see Figure 7 3 Local Bit 8 asserted see Figure 7 3 Control via front panel replacing tra...

Page 367: ...rted see Figure 7 23 SV4 SELOGIC control equation variable timer input SV4 asserted see Figure 7 23 SV1T SELOGIC control equation variable timer output SV1T asserted see Figure 7 23 Control SV2T SELOGIC control equation variable timer output SV2T asserted see Figure 7 23 SV3T SELOGIC control equation variable timer output SV3T asserted see Figure 7 23 SV4T SELOGIC control equation variable timer o...

Page 368: ...24 SV11T SELOGIC control equation variable timer output SV11T asserted see Figure 7 24 SV12T SELOGIC control equation variable timer output SV12T asserted see Figure 7 24 31 SV13 SV14 SV15 SV16 SELOGIC control equation variable timer input SV13 asserted see Figure 7 24 SELOGIC control equation variable timer input SV14 asserted see Figure 7 24 SELOGIC control equation variable timer input SV15 ass...

Page 369: ... Section 6 Close and Reclose Logic Testing RSTMN Reset timer is timing see Reclosing Relay in Section 6 Close and Reclose Logic FSA A phase fault identification logic output used in A phase targeting see Table 5 1 Control FSB B phase fault identification logic output used in B phase targeting see Table 5 1 FSC C phase fault identification logic output used in C phase targeting see Table 5 1 34 BCW...

Page 370: ...phase overcurrent element control 36 ZLOAD ZLOUT ZLIN see Figure 4 2 BCWA A phase breaker contact wear has reached 100 wear level see Breaker Recloser Contact Wear Monitor in Section 8 Indication BCWB B phase breaker contact wear has reached 100 wear level see Breaker Recloser Contact Wear Monitor in Section 8 BCWC C phase breaker contact wear has reached 100 wear level see Breaker Recloser Contac...

Page 371: ...trip signal start see Figure 5 6 Output contact assignment EKEY Echo key see Figure 5 6 Testing ECTT Echo conversion to trip condition see Figure 5 6 WFC Weak infeed condition see Figure 5 6 PT Permissive trip signal to POTT logic see Figure 5 5 39 PTRX2 Permissive trip 2 signal from DCUB logic see Figure 5 10 PTRX Permissive trip signal to Trip logic see Figure 5 7 PTRX1 Permissive trip 2 signal ...

Page 372: ...N2S timed out derived from 67N2 see Figures 3 8 and 5 14 67G2S Level 2 directional residual ground definite time short delay overcurrent element 67G2S timed out derived from 67G2 see Figures 3 10 and 5 14 67Q2S Level 2 directional negative sequence definite time short delay overcurrent element 67Q2S timed out derived from 67Q2 see Figures 3 12 and 5 14 PDEM Phase demand current above pickup settin...

Page 373: ...ED9 Recloser Open LED see Figure 1 36 44 LED1 Ground Enabled LED see Figure 1 35 LED2 Reclose Enabled LED see Figure 1 35 LED3 Remote Enabled LED see Figure 1 35 LED4 Alternate Settings LED see Figure 1 35 LED5 Lock LED see Figure 1 35 LED6 Aux 1 LED see Figure 1 36 LED7 Aux 2 LED see Figure 1 36 LED8 Recloser Closed LED see Figure 1 36 45 OCP Operations phase fast curve see Figure 1 6 Control OCG...

Page 374: ...47 RMB8A RMB7A RMB6A RMB5A RMB4A RMB3A RMB2A RMB1A Channel A received bit 8 Channel A received bit 7 Channel A received bit 6 Channel A received bit 5 Channel A received bit 4 Channel A received bit 3 Channel A received bit 2 Channel A received bit 1 MIRRORED BITS only operable in firmware versions 1 and greater 48 TMB8A Channel A transmit bit 8 TMB7A Channel A transmit bit 7 TMB6A Channel A trans...

Page 375: ...threshold ROKB Channel B received data ok LBOKA Channel A looped back ok CBADA Channel A channel unavailability over threshold RBADA Channel A outage duration over threshold ROKA Channel A received data ok 56 50NF Forward direction neutral ground overcurrent threshold exceeded see Figures 4 4 4 7 and 4 11 Testing 50NR Reverse direction neutral ground overcurrent threshold exceeded see Figures 4 4 ...

Page 376: ... 7 9 Remote Bit 14 asserted see Figure 7 9 Remote Bit 15 asserted see Figure 7 9 Remote Bit 16 asserted see Figure 7 9 Control via serial port Only available in the SEL 351R 2 60 LT9 LT10 LT11 LT12 LT13 LT14 LT15 LT16 Latch Bit 9 asserted see Figure 7 11 Latch Bit 10 asserted see Figure 7 11 Latch Bit 11 asserted see Figure 7 11 Latch Bit 12 asserted see Figure 7 11 Latch Bit 13 asserted see Figur...

Page 377: ...s wired up as a sensitive residual current channel in the SEL 351R The neutral current transformer ratio will be set equal to the phase current transformer ratio The neutral current channel is scaled to measure sensitive residual currents less than 1 5 A secondary The internally derived residual elements G elements are scaled the same as the phase channels and measure larger currents up to 150 A s...

Page 378: ... to the controlling enable setting For example the neutral ground time overcurrent elements settings on Sheet 5 settings 51N1P through 51N1RS and 51N2P through 51N2RS are controlled by enable setting E51N Other System Parameters Refer to Settings Sheet 20 of 28 The global settings NFREQ and PHROT allow you to configure the SEL 351R to your specific system Set NFREQ equal to your nominal power syst...

Page 379: ...edance magnitude 0 50 2550 00 Ω secondary Z0MAG Zero sequence line impedance angle 40 00 90 00 degrees Z0ANG Line length 0 10 999 00 unitless LL Instantaneous Definite Time Overcurrent Enable Settings Phase element levels N 1 6 see Figures 3 1 3 2 3 3 and 3 7 E50P Neutral ground element levels channel IN N 1 6 see Figures 3 8 and 3 9 E50N Residual ground element levels N 1 6 see Figures 3 10 and 3...

Page 380: ...s dependent on preceding enable setting E50P 1 6 Pickup OFF 0 05 20 00 A 50P1P Pickup OFF 0 05 20 00 A 50P2P Pickup OFF 0 05 20 00 A 50P3P Pickup OFF 0 05 20 00 A 50P4P Pickup OFF 0 05 20 00 A 50P5P Pickup OFF 0 05 20 00 A 50P6P Phase Definite Time Overcurrent Elements see Figure 3 3 Number of phase element time delay settings dependent on preceding enable setting E50P 1 6 all four time delay sett...

Page 381: ...Time delay 0 00 16000 00 cycles in 0 25 cycle steps 67N2D Time delay 0 00 16000 00 cycles in 0 25 cycle steps 67N3D Time delay 0 00 16000 00 cycles in 0 25 cycle steps 67N4D Residual Ground Inst Def Time Overcurrent Elements see Figures 3 10 and 3 11 Number of residual ground element pickup settings dependent on preceding enable setting E50G 1 6 Pickup OFF 0 05 20 00 A 50G1P Pickup OFF 0 05 20 00 ...

Page 382: ...ay 0 00 16000 00 cycles in 0 25 cycle steps 67Q3D Time delay 0 00 16000 00 cycles in 0 25 cycle steps 67Q4D IMPORTANT See Appendix F for information on setting negative sequence overcurrent elements Phase Time Overcurrent Elements see Figure 3 14 and Figure 3 15 Make the following settings if preceding enable setting E51P 1 or 2 Pickup OFF 0 10 3 20 A 51P1P Curve U1 U5 C1 C5 recloser or user curve...

Page 383: ...e the following settings if preceding enable setting E51N 2 Pickup OFF 0 005 0 160 A 51N2P Curve U1 U5 C1 C5 recloser or user curve see Figures 9 1 through 9 20 51N2C Time Dial 0 50 15 00 for curves U1 U5 0 05 1 00 for curves C1 C5 0 10 2 00 for recloser and user curves 51N2TD Electromechanical Reset Y N applicable only to curves U1 U5 C1 C5 51N2RS Constant time adder 0 00 60 00 cyc 51N2CT Minimum...

Page 384: ... preceding enable setting E51Q Y Pickup OFF 0 10 3 20 A 51QP Curve U1 U5 C1 C5 recloser or user curve see Figures 9 1 through 9 20 51QC Time Dial 0 50 15 00 for curves U1 U5 0 05 1 00 for curves C1 C5 0 10 2 00 for recloser and user curves 51QTD Electromechanical Reset Y N applicable only to curves U1 U5 C1 C5 51QRS Constant time adder 0 00 60 00 cyc 51QCT Minimum response 0 00 60 00 cyc 51QMR IMP...

Page 385: ...5 1 00 A 50QFP Reverse directional negative sequence current pickup 0 05 1 00 A 50QRP Positive sequence current restraint factor I2 I1 0 02 0 50 unitless a2 Zero sequence current restraint factor I2 I0 0 10 1 20 unitless k2 Make settings 50GFP 50GRP a0 Z0F and Z0R if preceding enable setting E32 Y and preceding setting ORDER contains V If E32 AUTO and ORDER contains V these settings are made autom...

Page 386: ...e steps 25ANG1 Maximum angle 2 0 80 in 1 degree steps 25ANG2 Synchronizing phase VA VB VC or 0 330 in 30 degree steps degree option is for VS not in phase with VA VB or VC set with respect to VS constantly lagging VA SYNCP Breaker close time for angle compensation 0 00 60 00 cycles in 0 25 cycle steps TCLOSD Frequency Element see Figures 3 27 and 3 28 Make the following settings if preceding enabl...

Page 387: ...OTF Y Close enable time delay OFF 0 00 16000 00 cycles in 0 25 cycle steps CLOEND 52 A enable time delay OFF 0 00 16000 00 cycles in 0 25 cycle steps 52AEND SOTF duration 0 50 16000 00 cycles in 0 25 cycle steps SOTFD POTT Trip Scheme Settings also used in DCUB Trip Schemes see Figure 5 6 Make the following settings if preceding enable setting ECOMM POTT DCUB1 or DCUB2 Zone level 3 reverse block t...

Page 388: ... 25 cycle steps 67G2SD Level 2 negative sequence short delay 0 00 60 00 cycles in 0 25 cycle steps 67Q2SD Demand Metering Settings see Figures 8 9 and 8 11 Make the following settings whether preceding enable setting EDEM THM or ROL Time constant 5 10 15 30 60 minutes DMTC Phase pickup OFF 0 10 3 20 A PDEMP Neutral ground pickup channel IN OFF 0 005 0 160 A NDEMP Residual ground pickup OFF 0 10 3 ...

Page 389: ...V7 Pickup Time 0 16000 00 cycles in 0 25 cycle steps SV7PU SV7 Dropout Time 0 16000 00 cycles in 0 25 cycle steps SV7DO SV8 Pickup Time 0 16000 00 cycles in 0 25 cycle steps SV8PU SV8 Dropout Time 0 16000 00 cycles in 0 25 cycle steps SV8DO SV9 Pickup Time 0 16000 00 cycles in 0 25 cycle steps SV9PU SV9 Dropout Time 0 16000 00 cycles in 0 25 cycle steps SV9DO SV10 Pickup Time 0 16000 00 cycles in ...

Page 390: ...rations to lockout ground OFF 1 5 OPLKGR Operations to lockout SEF OFF 1 5 OPLKSF Activate high current trip phase OFF 1 5 HITRPH Activate high current trip ground OFF 1 5 HITRGR Activate high current lockout phase OFF 1 5 HILKPH Activate high current lockout ground OFF 1 5 HILKGR Cold load pickup scheme phase Y N ECOLDP Cold load pickup scheme ground Y N ECOLDG Restore min trip phase Y N RPPH Res...

Page 391: ... TRSOTF Direct transfer trip conditions DTT Unlatch trip conditions ULTR Communications Assisted Trip Scheme Input Equations Permissive trip 1 used for ECOMM POTT DCUB1 or DCUB2 see Figures 5 5 5 7 and 5 10 PT1 Loss of guard 1 used for ECOMM DCUB1 or DCUB2 see Figure 5 10 LOG1 Permissive trip 2 used for ECOMM DCUB2 see Figures 5 5 and 5 10 PT2 Loss of guard 2 used for ECOMM DCUB2 see Figure 5 10 L...

Page 392: ...h Bit LT4 RST4 Set Latch Bit LT5 SET5 Reset Latch Bit LT5 RST5 Set Latch Bit LT6 SET6 Reset Latch Bit LT6 RST6 Set Latch Bit LT7 SET7 Reset Latch Bit LT7 RST7 Set Latch Bit LT8 SET8 Reset Latch Bit LT8 RST8 Set Latch Bit LT9 SET9 Reset Latch Bit LT9 RST9 Set Latch Bit LT10 SET10 Reset Latch Bit LT10 RST10 Set Latch Bit LT11 SET11 Reset Latch Bit LT11 RST11 Set Latch Bit LT12 SET12 Reset Latch Bit ...

Page 393: ...see Figure 3 10 67G4TC Level 1 negative sequence see Figure 3 12 67Q1TC Level 2 negative sequence see Figure 3 12 67Q2TC Level 3 negative sequence see Figure 3 12 67Q3TC Level 4 negative sequence see Figure 3 12 67Q4TC Torque Control Equations for Time Overcurrent Elements Note torque control equation settings cannot be set directly to logical 0 Phase see Figure 3 14 51P1TC Neutral Ground see Figu...

Page 394: ...ent Equation SC1D SC1D SELOGIC Counter Reset Equation SC2R SC21R SELOGIC Counter Increment Equation SC2I SC21I SELOGIC Counter Decrement Equation SC2D SC21D SELOGIC Counter Reset Equation SC3R SC31R SELOGIC Counter Increment Equation SC3I SC31I SELOGIC Counter Decrement Equation SC3D SC31D SELOGIC Counter Reset Equation SC4R SC41R SELOGIC Counter Increment Equation SC4I SC41I SELOGIC Counter Decre...

Page 395: ...UT104 OUT104 Output Contact OUT105 OUT105 Output Contact OUT106 OUT106 Output Contact OUT107 OUT107 Operator Control LED Equations see Figures 1 35 1 36 and 1 51 through 1 54 LED1 Ground Enabled LED1 LED2 Reclose Enabled LED2 LED3 Remote Enabled LED3 LED4 Alternate Settings LED4 LED5 Lock LED5 LED6 Aux 1 LED6 LED7 Aux 2 LED7 LED8 Recloser Closed LED8 LED9 Recloser Open LED9 LED11 AC Supply LED11 L...

Page 396: ...P14 Display Point DP15 DP15 Display Point DP16 DP16 Setting Group Selection Equations See Table 7 4 Select Setting Group 1 SS1 Select Setting Group 2 SS2 Select Setting Group 3 SS3 Select Setting Group 4 SS4 Select Setting Group 5 SS5 Select Setting Group 6 SS6 Other Equations Event report trigger conditions see Section 12 ER Fault indication see A B C target LED discussion at end of Section 5 use...

Page 397: ... TMB1A Channel A transmit bit 2 TMB2A Channel A transmit bit 3 TMB3A Channel A transmit bit 4 TMB4A Channel A transmit bit 5 TMB5A Channel A transmit bit 6 TMB6A Channel A transmit bit 7 TMB7A Channel A transmit bit 8 TMB8A Channel B transmit bit 1 TMB1B Channel B transmit bit 2 TMB2B Channel B transmit bit 3 TMB3B Channel B transmit bit 4 TMB4B Channel B transmit bit 5 TMB5B Channel B transmit bi...

Page 398: ...ed Input Timers see Figure 7 1 Input IN101 debounce time AC 0 00 1 00 cycles in 0 25 cycle steps IN101D Input IN102 debounce time AC 0 00 1 00 cycles in 0 25 cycle steps IN102D Input IN103 debounce time AC 0 00 1 00 cycles in 0 25 cycle steps IN103D Input IN104 debounce time AC 0 00 1 00 cycles in 0 25 cycle steps IN104D Input IN105 debounce time AC 0 00 1 00 cycles in 0 25 cycle steps IN105D Inpu...

Page 399: ...tor control effectively operates as the other operator controls with no time delay RSTLED Other Global Settings CLOSE operator control time delay 0 3600 cyc see Figure 1 39 PB8D TRIP operator control time delay 0 3600 cyc see Figure 1 40 PB9D True three phase voltage connected Y N see Figure 4 1 in Section 4 and A B C target LED discussion at end of Section 5 3PVOLT Set the following PHANTV settin...

Page 400: ...age 22 of 28 FOR THE SEL 351R RECLOSER CONTROL Date GLOBAL SETTINGS SERIAL PORT COMMAND SET G AND FRONT PANEL Date Code 20020215 Wake up port baud rate 1200 38400 ABAUD Wake up message 4 characters 0 9 A Z space CHWAKE ...

Page 401: ...commas ELEMENT QUANTITY RECORDED IA IB IC IN Phase and neutral current magnitudes VA VB VC VS Phase and sync voltage magnitudes IG I1 3I2 3V0 V1 V2 Sequence current and voltage magnitudes FREQ Phase frequency MWA MWB MWC MW3 Phase and 3 phase megaWATTs MVARA MVARB MVARC MVAR3 Phase and 3 phase megaVARs PFA PFB PFC PF3 Phase and 3 phase power factor LDPFA LDPFB LDPFC LDPF3 Phase and 3 phase power f...

Page 402: ...LB2 Label 7 characters PLB2 Local Bit LB3 Name 14 characters NLB3 Clear Local Bit LB3 Label 7 characters CLB3 Set Local Bit LB3 Label 7 characters SLB3 Pulse Local Bit LB3 Label 7 characters PLB3 Local Bit LB4 Name 14 characters NLB4 Clear Local Bit LB4 Label 7 characters CLB4 Set Local Bit LB4 Label 7 characters SLB4 Pulse Local Bit LB4 Label 7 characters PLB4 Local Bit LB5 Name 14 characters NLB...

Page 403: ...ame 14 characters NLB11 Clear Local Bit LB11 Label 7 characters CLB11 Set Local Bit LB11 Label 7 characters SLB11 Pulse Local Bit LB11 Label 7 characters PLB11 Local Bit LB12 Name 14 characters NLB12 Clear Local Bit LB12 Label 7 characters CLB12 Set Local Bit LB12 Label 7 characters SLB12 Pulse Local Bit LB12 Label 7 characters PLB12 Local Bit LB13 Name 14 characters NLB13 Clear Local Bit LB13 Lab...

Page 404: ... if DP3 logical 0 16 characters DP3_0 Display if DP4 logical 1 16 characters DP4_1 Display if DP4 logical 0 16 characters DP4_0 Display if DP5 logical 1 16 characters DP5_1 Display if DP5 logical 0 16 characters DP5_0 Display if DP6 logical 1 16 characters DP6_1 Display if DP6 logical 0 16 characters DP6_0 Display if DP7 logical 1 16 characters DP7_1 Display if DP7 logical 0 16 characters DP7_0 Di...

Page 405: ...logical 1 16 characters DP14_1 Display if DP14 logical 0 16 characters DP14_0 Display if DP15 logical 1 16 characters DP15_1 Display if DP15 logical 0 16 characters DP15_0 Display if DP16 logical 1 16 characters DP16_1 Display if DP16 logical 0 16 characters DP16_0 Reclosing Relay Labels see Functions Unique to the Front Panel Interface in Section 11 Reclosing Relay Last Shot Label 14 char 79LL Re...

Page 406: ...ty 0 E N Odd Even None PARITY Stop Bits 1 2 STOP Other Port Settings Time out 0 30 minutes T_OUT Send Auto Messages to Port Y N DTA AUTO Enable Hardware Handshaking Y N RTSCTS Fast Operate Enable Y N FASTOP Other Port Settings Set T_OUT to the number of minutes of serial port inactivity for an automatic log out Set T_OUT 0 for no port time out Set AUTO Y to allow automatic messages at the serial p...

Page 407: ... Compressed ASCII Protocol 10 8 Distributed Network Protocol DNP V3 00 10 8 MIRRORED BITS Communications 10 8 Serial Port Automatic Messages 10 8 Serial Port Access Levels 10 9 Access Level 0 10 9 Access Level 1 10 10 Access Level E EZ 10 11 Access Level B 10 11 Access Level 2 10 11 Command Summary 10 12 Command Explanations 10 14 Access Level 0 Commands 10 14 ACC EZA BAC and 2AC Commands go to Ac...

Page 408: ...ker Wear 10 42 CLO Command Close Breaker 10 44 GRO n Command Change Active Setting Group 10 45 OPE Command Open Breaker 10 46 PUL Command Pulse Output Contact 10 46 Access Level 2 Commands 10 47 CON Command Control Remote Bit 10 47 COP m n Command Copy Setting Group 10 47 LOO Command Loop Back 10 48 PAS Command View Change Passwords 10 48 SET Command Change Settings 10 49 STA C Command Status Clea...

Page 409: ...emulation provides the best display Serial Port Default Settings for all ports Baud Rate 2400 ports 1 and 2 38400 port F Data Bits 8 Parity N Stop Bits 1 RTS CTS N Note Serial Port 3 is factory set as a DNP port with a baud rate of 19200 See Appendix H Distriburted Network Protocol DNP V3 00 for more information To change the port settings use the Access Level 2 SET P command see Section 9 Setting...

Page 410: ...able diagrams that follow in this section The SEL 2020 distributes demodulated IRIG B time code through all of its 16 rear EIA 232 serial ports Demodulated IRIG B time code can also be input into the Serial Port 1 compression connector If demodulated IRIG B time code is input into this connector it should not be input into Serial Port 2 and vice versa Table 10 1 Pinout Functions for EIA 232 Serial...

Page 411: ...from SEL These cables don t apply to the wake up port Permanently connected metallic communication cables should be restricted to use inside a substation control house to reduce the hazards of ground potential rise SEL recommends that the metallic cable length be limited to 100 feet or less If your devices require more than 100 feet of cable you should use fiber optic cable and transceivers to pro...

Page 412: ...dem Cable C222 externally powered modem SEL 351R DCE Device 9 Pin Male 25 Pin Male D Subconnector D Subconnector GND 5 7 GND TXD 3 2 TXD IN RTS 7 20 DTR IN RXD 2 3 RXD OUT CTS 8 8 CD OUT GND 9 1 GND Cable C220 modem powered from Pin 1 5 vdc 1 SEL 351R DCE Device 9 Pin Male 25 Pin Male D Subconnector D Subconnector GND 5 7 GND TXD 3 2 TXD IN RTS 7 20 DTR IN RXD 2 3 RXD OUT CTS 8 8 CD OUT 5 VDC 1 10...

Page 413: ...ser Control to SEL 2020 SEL 2030 or SEL 2100 Cable C273A SEL 2020 SEL 351R 9 Pin Male 9 Pin Male D Subconnector D Subconnector RXD 2 3 TXD TXD 3 2 RXD IRIG 4 4 IRIG GND 5 5 GND IRIG 6 6 IRIG RTS 7 8 CTS CTS 8 7 RTS SEL 351R Recloser Control to SEL DTA2 Cable C272A SEL DTA2 SEL 351R 9 Pin Male 9 Pin Male D Subconnector D Subconnector RXD 2 3 TXD TXD 3 2 RXD GND 5 5 GND RTS 7 7 RTS CTS 8 8 CTS DTE D...

Page 414: ...ardware handshaking use the SET P command or front panel SET pushbutton to set RTSCTS Y Disable hardware handshaking by setting RTSCTS N If RTSCTS N the SEL 351R permanently asserts the RTS line If RTSCTS Y the SEL 351R deasserts RTS when it is unable to receive characters If RTSCTS Y the SEL 351R does not send characters until the CTS input is asserted Software Protocols The SEL 351R provides sta...

Page 415: ... CRLF MESSAGE LINE 2 CRLF LAST MESSAGE LINE CRLF ETX Each message begins with the start of transmission character ASCII 02 and ends with the end of transmission character ASCII 03 Each line of the message ends with a carriage return and line feed 3 The control implements XON XOFF flow control The serial port transmits XON ASCII hex 11 and asserts the RTS output if hardware hand shaking enabled whe...

Page 416: ...ppendix D Configuration Fast Meter and Fast Operate Commands There are no settings required to implement or control this protocol It is available on any SEL 351R port that is set for SEL or LMD protocol SEL Compressed ASCII Protocol SEL Compressed ASCII protocol provides compressed versions of some of the recloser control ASCII commands The protocol is described in Appendix E Compressed ASCII Comm...

Page 417: ...re The control sends a status report each time a self test warning or failure condition is detected See STA Command Recloser Control Self Test Status in this section SERIAL PORT ACCESS LEVELS You can issue commands to the SEL 351R via the serial communication ports to view metering values change control settings etc The available serial port commands are listed in Table 10 5 A summary of commands ...

Page 418: ... Level B If passwords are enabled you must enter passwords to reach these other access levels The EZA EZAccess command allows the control to go to Access Level E see ACC EZA BAC and 2AC Commands go to Access Level 1 E B or 2 in the Command Explanations subsection for more detail Enter the EZA command at the Access Level 1 prompt EZA ENTER The 2AC command allows the control to go to Access Level 2 ...

Page 419: ... PUL in Table 10 5 are available from Access Level B Access Level B is intended to allow operators to perform control functions without being able to change settings For example enter the CLO command at the Access Level B prompt to close the recloser CLO ENTER While you are in Access Level B any of the Access Level 1 and Access Level E commands are also available commands 2AC through SET FZ in Tab...

Page 420: ...close the recloser operate output contacts or change the active setting group The Access Level 2 commands primarily allow the user to change control settings and logic Again a higher access level can access the serial port commands in a lower access level The commands are shown in upper case letters but you can also enter them with lower case letters Table 10 5 Serial Port Command Summary Access L...

Page 421: ...e active setting group GROUP B OPE Open breaker recloser TRIP B PUL Pulse output contact CNTRL 2 CON Control remote bit 2 COP Copy setting group 2 LOO MIRRORED BITS loopback 2 PAS View change passwords SET 2 SET Change group settings SET 2 SET L Change logic settings 2 SET G Change global settings SET 2 SET R Change sequence of event triggering settings 2 SET P Change serial port settings SET 2 SE...

Page 422: ...rt command explanations that follow in the Command Explanations subsection are in the same order as the commands listed in Table 10 5 COMMAND EXPLANATIONS Access Level 0 Commands ACC EZA BAC and 2AC Commands go to Access Level 1 E B or 2 The ACC EZA BAC and 2AC commands provide entry to the multiple access levels Different commands are available at the different access levels as shown in Table 10 ...

Page 423: ... now in Access Level 1 If the entered password is incorrect the control asks for the password again Password The control will ask up to three times If the requested password is incorrectly entered three times the control pulses the ALARM contact for one second and remains at Access Level 0 prompt Access Level Attempt password not required Assume the following conditions Password jumper ON in place...

Page 424: ...er contact wear monitor report BRE ENTER RECLOSER R1 Date 02 02 97 Time 08 40 14 802 FEEDER 2101 Ctrl Trips 9 IA 40 7 IB 41 4 IC 53 8 kA Ext Trips 3 IA 0 8 IB 0 9 IC 1 1 kA Percent wear A 4 B 4 C 6 LAST RESET 12 27 96 15 32 59 The BRE A command displays the same information as the BRE command plus per phase and ground trip operation counters BRE A ENTER RECLOSER R1 Date 02 02 99 Time 08 40 28 529 ...

Page 425: ... ENTER FEEDER 1 Date 02 20 98 Time 18 37 36 125 STATION A FID SEL 351 2 X135 VM D980403 CID FF27 Summary for Mirrored Bits channel A For 02 05 98 17 18 12 993 to 02 20 98 18 37 36 123 Total failures 4 Last error Relay Disabled Relay Disabled 2 Data error 0 Longest Failure 2 835 sec Re Sync 0 Underrun 1 Unavailability 0 000003 Overrun 0 Parity error 1 Framing error 0 Loopback 0 Failure Recovery Dat...

Page 426: ...nnels to be cleared COU Command Counter Variable Values The COU command displays the present values for the SELOGIC counter variables To view the values enter the command COU k ENTER where k is an optional parameter to specify the number of times 1 32767 to repeat the counter display If k is not specified the counter values are displayed once COU ENTER RECLOSER R1 Date 02 15 02 Time 12 21 48 226 F...

Page 427: ...t event summaries The maximum number of available event summaries is a function of the LER length of event report setting The control saves up to twenty eight 15 cycle event reports if setting LER 15 and fourteen 30 cycle event reports if setting LER 30 If x is C or c the recloser control clears the event summaries and all corresponding event reports from nonvolatile memory The event summaries inc...

Page 428: ...not run successfully or if the fault locator is disabled enable setting EFLOC N is shown in the LOCAT column In either case the event type listed in the EVENT column is one of the following TRIP event report generated by assertion of Relay Word bit TRIP ER event report generated by assertion of SELOGIC control equation event report trigger condition setting ER PULSE event report generated by execu...

Page 429: ...ck with IRIG B It is not necessary to issue the IRI command to synchronize the SEL 351R internal clock with IRIG B You can use the IRI command to determine if the SEL 351R is properly reading the IRIG B signal LDP Command Load Profile Report Use the LDP command to view the Load Profile Report For more information on Load Profile Reports see Section 8 Breaker Recloser Monitor Battery System Monitor...

Page 430: ...e connected voltage inputs only Frequency FREQ Hz Instantaneous power system frequency measured on voltage channel VA The angles are referenced to the A phase voltage if it is greater than 13 V secondary otherwise the angles are referenced to A phase current The angles range from 179 99 to 180 00 degrees If phantom voltages are enabled through the SET F or SET G commands on an SEL 351R 2 the relay...

Page 431: ... Input currents A primary IG Residual ground current A primary IG 3I0 IA IB IC Voltages VA B C S Wye connected phase to neutral voltage inputs kV primary VAB BC CA Calculated phase to phase voltages kV primary Power MWA B C Single phase megawatts wye connected voltage inputs only MW3P Three phase megawatts MVARA B C Single and three phase megavars wye connected voltage inputs only MVAR3P Three pha...

Page 432: ...V ANG DEG 29 98 89 23 150 34 A B C 3P MW 0 447 0 535 0 435 1 417 MVAR 0 016 0 018 0 010 0 044 PF 0 999 0 999 1 000 1 000 LAG LAG LAG LAG I1 3I2 3I0 V1 V2 3V0 MAG 32 036 6 196 7 526 14 759 0 131 0 212 ANG DEG 1 47 106 38 117 52 0 33 59 08 157 40 FREQ Hz 60 00 MET D Demand Metering The MET D command displays the demand and peak demand values of the following quantities Currents IA B C N Input curren...

Page 433: ...T RP command For more information on demand metering see Demand Metering in Section 8 Breaker Recloser Monitor Battery System Monitor Metering and Load Profile Functions MET E Energy Metering The MET E command displays the following quantities Energy MWhA B C Single phase megawatt hours in and out wye connected voltage inputs only MWh3P Three phase megawatt hours in and out MVARhA B C Single phase...

Page 434: ...ime IA A 196 8 02 01 97 15 00 42 574 30 0 02 01 97 14 51 02 391 IB A 195 0 02 01 97 15 05 19 558 31 8 02 01 97 14 50 55 536 IC A 200 4 02 01 97 15 00 42 578 52 2 02 01 97 14 51 02 332 IN A 42 6 02 01 97 14 51 02 328 42 6 02 01 97 14 51 02 328 IG A 42 0 02 01 97 14 50 55 294 42 0 02 01 97 14 50 55 294 VA kV 11 7 02 01 97 15 01 01 576 3 4 02 01 97 15 00 42 545 VB kV 11 7 02 01 97 15 00 42 937 2 4 02...

Page 435: ...Below are the SHO command options SHO n Show regular settings for settings group n n specifies the settings group 1 2 3 4 5 or 6 n defaults to the active settings group if not listed SHO EZ n Show EZ recloser control settings for settings group n n specifies the settings group 1 2 3 4 5 or 6 n defaults to the active settings group if not listed SHO FZ Show EZ global settings SHO G Show global sett...

Page 436: ... OFF Press RETURN to continue 67N1D 0 00 67N2D 0 00 67N3D 0 00 67N4D 0 00 50G1P OFF 50G2P OFF 50G3P OFF 50G4P OFF 50G5P OFF 50G6P 0 10 67G1D 0 00 67G2D 0 00 67G3D 0 00 67G4D 0 00 51P1P 0 40 51P1C A 51P1TD 1 00 51P1CT 0 00 51P1MR 0 00 51P2P 0 40 51P2C C 51P2TD 1 00 51P2CT 0 00 51P2MR 0 00 51N1P OFF 51N1C 1 51N1TD 1 00 51N1CT 0 00 51N1MR 0 00 51N2P OFF 51N2C 13 51N2TD 1 00 51N2CT 0 00 51N2MR 0 00 51...

Page 437: ...ser curve A Fast curve ground OFF U1 U5 C1 C5 recloser or user curve 1 Delay curve phase OFF U1 U5 C1 C5 recloser or user curve C Delay curve ground OFF U1 U5 C1 C5 recloser or user curve 13 Operations phase fast curve OFF 1 5 2 Operations ground fast curve OFF 1 5 2 Operations to lockout phase OFF 2 5 4 Operations to lockout ground OFF 2 5 4 Reclose interval 1 0 999999 00 cycles 300 00 Reclose in...

Page 438: ...z 60 Phase Rotation ABC ACB ABC Recloser Wear Monitor AUTO Y N AUTO Recloser type OIL VAC1 VAC2 OIL Interrupt rating 500 20000 A pri 6000 Reset trip latched LEDs on close Y Y1 N N1 Y True three phase voltage connected Y N N Phantom voltages from VA VB VC VAB VBC VCA OFF OFF Battery Amp hours 6 5 20 0 8 0 Battery capacity for sleep 0 100 20 Turn on the 12 V power Y N N SHO G ENTER Global Settings T...

Page 439: ...D18L N LED19L N LED20L N LED24L Y LED25L Y RSTLED Y PB8D 0 00 PB9D 0 00 3PVOLT N PHANTV NO EZGRPS 2 AMPHR 8 0 SLPCAP 20 ON12V N ABAUD 2400 CHWAKE ABCD If the relay is an SEL 351R 2 this command also displays RST9 RST16 SET9 SET16 DP9 DP16 SC1I SC8I SC1D SC8D and SC1R SC8R SHO L ENTER SELogic group 1 SELogic Control Equations TR 51P1T 51P2T 51G1T 51G2T 51N1T 51N2T 67P2T 67G2T 67N2T 67N3T 81D1T PB9 ...

Page 440: ... SET3 PB3 LT3 LT4 RST3 PB3 LT3 LT4 SET4 PB5 LT4 RST4 PB5 LT4 SET5 PB6 LT5 LT4 RST5 PB6 LT5 LT4 SET6 PB7 LT6 LT4 RST6 PB7 LT6 LT4 SET7 1 RST7 0 Press RETURN to continue SET8 0 RST8 0 67P1TC HLP 67P2TC HTP 67P3TC 1 67P4TC 1 67N1TC HLG LT1 67N2TC HTG LT1 67N3TC LT1 51P1 51P2 51G1 51G2 51N1 51N2 SV12 SV12 50G5 SV12 50N5 67N4TC 1 67G1TC HLG LT1 67G2TC HTG LT1 67G3TC 1 67G4TC 1 67Q1TC 1 67Q2TC 1 67Q3TC ...

Page 441: ...51G1T 51G2T 51N1T 51N2T 67P2T 67G2T 67N2T Press RETURN to continue SV14 50G6 50N6 51N1 51N2 SV15 SV13 OLG GTP SV14 OLG GTP SV14 50P6 OLP GTP 50P6 OLP GTP 50P6 SV14 SV16 SV15 SV13 OLP OLG RCTR TRIP RCCL CLOSE OUT101 0 OUT102 0 OUT103 0 OUT104 0 OUT105 0 OUT106 0 OUT107 0 LED1 LT1 LED2 LT2 LED3 0 LED4 SG1 LED5 LT4 LED6 0 LED7 0 Press RETURN to continue LED8 52A LED9 52A PINBD LED11 DISCHG LED12 NOBA...

Page 442: ...tinue TMB1A 0 TMB2A 0 TMB3A 0 TMB4A 0 TMB5A 0 TMB6A 0 TMB7A 0 TMB8A 0 TMB1B 0 TMB2B 0 TMB3B 0 TMB4B 0 TMB5B 0 TMB6B 0 TMB7B 0 TMB8B 0 SHO P ENTER Port 3 PROTO SEL SPEED 2400 BITS 8 PARITY N STOP 1 T_OUT 15 AUTO N RTSCTS N FASTOP N SHO R ENTER Sequential Events Recorder trigger lists SER1 TRIP 51P1T 51P2T 51G1T 51G2T 51N1T 51N2T 67P2T 67G2T 67N2T 67N3T 81D1T PB9 67P1 67G1 67N1 SER2 CLOSE 52A CF 79C...

Page 443: ...s the status report showing the recloser control self test information To view a status report enter the command STA n ENTER where n is an optional parameter to specify the number of times 1 32767 to repeat the status display If n is not specified the status report is displayed once A typical SEL 351R status report output appears as shown below STA ENTER RECLOSER R1 Date 02 01 98 Time 12 21 48 226...

Page 444: ...al convert status IO_BRD Extra I O board status BATT Displays status and mode of the battery charger board MODE Mode that battery charger is in CHARGE Battery is charged to 90 percent or more charging at low charge rate HICHRG Battery is charged to less than 90 percent charging at high charge rate DISCHG Battery is discharging but is charged to greater than SLPCAP setting DISTST Battery discharge ...

Page 445: ...Setting the SEL 351R Recloser Control and Appendix G Setting SELOGIC Control Equations The TAR command does not remap the front panel target LEDs as is done in some previous SEL relays However the execution of the equivalent TAR command via the front panel display does remap the bottom row of the front panel target LEDs see OTHER pushbutton in the Pushbutton Primary Functions subsection in the Fro...

Page 446: ...5 50N6 50G5 50G6 50Q5 50Q6 TAR 15 50QF 50QR 50GF 50GR 32VE 32QGE 32NE 32QE TAR 16 F32P R32P F32Q R32Q F32QG R32QG F32V R32V TAR 17 F32N R32N 32PF 32PR 32QF 32QR 32GF 32GR TAR 18 27A1 27B1 27C1 27A2 27B2 27C2 59A1 59B1 TAR 19 59C1 59A2 59B2 59C2 27AB 27BC 27CA 59AB TAR 20 59BC 59CA 59N1 59N2 59Q 59V1 27S 59S1 TAR 21 59S2 59VP 59VS SF 25A1 25A2 3P27 3P59 TAR 22 81D1 81D2 81D3 81D4 81D5 81D6 27B81 50...

Page 447: ...0NR 32NF 32NR DCONN DDATA TAR 57 TAR 58 2 LB9 LB10 LB11 LB12 LB13 LB14 LB15 LB16 TAR 59 2 RB9 RB10 RB11 RB12 RB13 RB14 RB15 RB16 TAR 60 2 LT9 LT10 LT11 LT12 LT13 LT14 LT15 LT16 1 MIRRORED BITS elements only valid in firmware versions 1 or greater 2 Only available in SEL 351R 2 Relay versions or greater Command TAR SH1 10 is executed in the following example TAR SH1 10 ENTER 79RS 79CY 79LO SH0 SH1 ...

Page 448: ...vent report RECLOSER R1 Date 02 02 98 Time 12 57 01 737 FEEDER 2101 Event TRIG Location Shot 2 Frequency 60 00 Targets 11000000 10000000 Currents A Pri ABCNGQ 235 236 237 0 2 0 See Section 12 Standard Event Reports and SER for more information on event reports Access Level E EZ Commands Access Level E commands primarily allow you to test the battery and set EZ settings and global EZ settings All A...

Page 449: ...tery test in progress If the last battery passed the last load test the control responds as follows BTT ENTER Battery test is OK Time until next battery test XX hours If the battery failed the previous load test the DTFAIL Relay Word element is asserted and the response is BTT ENTER Battery test is FAILED Time until next battery test XX hours If the BTT NOW command is entered the control forces an...

Page 450: ...oups 1 main settings and 2 alternate settings with the SET EZ 1 and SET EZ 2 commands respectively The EZ recloser control settings for settings groups 1 and 2 also override a number of the regular settings in the respective setting group If EZGRPS 2 the EZ settings for settings groups 3 through 6 cannot be made nor are the EZ settings for settings groups 3 through 6 active none of the regular set...

Page 451: ...rs For example to preload the breaker recloser wear to 8 percent 7 percent and 10 percent for the respective phases and preload some trip operation counters issue the command below BRE W A ENTER Breaker Wear Percent Preload A phase 4 8 ENTER B phase 4 7 ENTER C phase 6 10 ENTER Trip Counter Preload Ext Trips 3 Cntrl Trips 9 16 A phase Trips 6 14 B phase Trips 5 9 C phase Trips 8 10 EF G Trips 7 12...

Page 452: ...0 0 IB 0 0 IC 0 0 kA Ext Trips 0 IA 0 0 IB 0 0 IC 0 0 kA Percent wear A 0 B 0 C 0 A phase Trips 0 B phase Trips 0 C phase Trips 0 EF G Trips 0 SEF Trips 0 LAST RESET 02 03 99 08 44 28 See Breaker Recloser Contact Wear Monitor in Section 8 Breaker Recloser Monitor Battery System Monitor Metering and Load Profile Functions for further details on the breaker monitor CLO Command Close Breaker The CLO ...

Page 453: ...oup 2 and pulses the ALARM contact The control automatically outputs the Group Switch Report on all ports with the serial port setting AUTO Y An example Group Switch Report is shown below RECLOSER R1 Date 02 02 97 Time 09 40 34 611 FEEDER 2101 Active Group 2 The SELOGIC control equations Group Selector Switch elements SS1 through SS6 have priority over the GRO command in active setting group contr...

Page 454: ...OPE command is supervised by the main board Breaker jumper see Table 2 4 and Table 2 5 If the Breaker jumper is not in place Breaker jumper OFF the SEL 351R does not execute the OPE command and responds Aborted No Breaker Jumper PUL Command Pulse Output Contact The PUL command allows you to pulse any of the output contacts for a specified length of time The command format is PUL x y where x is the...

Page 455: ...ype the Control subcommand you wish to perform see Table 10 7 The following example shows the steps necessary to pulse Remote Bit 5 RB5 CON 5 ENTER CONTROL RB5 PRB 5 ENTER You must enter the same remote bit number in both steps in the command If the bit numbers do not match the recloser control responds Invalid Command Table 10 7 SEL 351R Recloser Control Remote Bit Control Subcommands Subcommand ...

Page 456: ...ata looped back as its input In this mode LBOK will assert if error free data is received PAS Command View Change Passwords You can use the Password command PAS to inspect or change existing passwords The factory default passwords for Access Levels 1 E B and 2 are Access Level Factory Default Password 1 OTTER E DAKOTA B EDITH 2 TAIL To inspect passwords type PAS ENTER 1 OTTER E DAKOTA B EDITH 2 TA...

Page 457: ...sequential events recorder SER settings and text label settings Below are the SET command options SET n Change regular settings for settings group n n specifies the settings group 1 2 3 4 5 or 6 n defaults to the active settings group if not listed SET EZ n Change EZ recloser control settings for settings group n n specifies the settings group 1 2 3 4 5 or 6 n defaults to the active settings group...

Page 458: ...lds and corrective actions VER Command Show Version Information The Version command VER allows you to view information about the recloser control battery charger board firmware versions The response to the VER command has the following format FID SEL 351R Rxxx Vx Dxxxxxx 0351R x Wye Integral Battery Charger x A Nominal phase current x xx A Nominal neutral current Protocol Options xxxx SELBOOT chec...

Page 459: ...mands 10 51 SEL 351R Instruction Manual A typical VER command response is shown below VER ENTER FID SEL351R R101 V0 D980415 0351R 0 Wye Integral Battery Charger 1 A Nominal phase current 0 05 A Nominal neutral current DNP Standard 263D SELboot checksum OK ...

Page 460: ......

Page 461: ...p A or B COM p n Show a communications summary for latest n event on MIRRORED BITS channel p COM p m n Show a communications summary report for events n through m on MIRRORED BITS channel p COM p d1 Show a communications summary report for events occurring on date d1 on MIRRORED BITS channel p COM p n Show a communications summary for events occurring between dates d1 and d2 on MIRRORED BITS chann...

Page 462: ...m date d1 to d2 Entry of dates is dependent on the Date Format setting DATE_F MDY or YMD SHO n Show regular settings for settings group n n 1 6 SHO EZ n Show EZ recloser control settings for settings group n n 1 6 SHO FZ Show EZ global settings SHO G Show global settings SHO L n Show SELOGIC control equation settings for settings group n n 1 6 SHO P n Show port settings for port n n 1 2 3 F SHO R ...

Page 463: ... 1 Access Level E and Access Level B commands are available from Access Level 2 The screen prompt is CON n Control Relay Word bit RBn Remote Bit n where n 1 8 n 1 16 in the SEL 351R 2 Execute CON n and the control responds CONTROL RBn Then reply with one of the following SRB n set Remote Bit n assert RBn CRB n clear Remote Bit n deassert RBn PRB n pulse Remote Bit n assert RBn for 1 4 cycle COP m ...

Page 464: ...ntrl X Send CANCEL command to abort current command and return to current access level prompt Key Stroke Commands When Using SET Command ENTER Retains setting and moves on to next setting ENTER Returns to previous setting ENTER Returns to previous setting section ENTER Skips to next setting section END ENTER Exits setting editing session then prompts user to save settings Ctrl X Aborts setting edi...

Page 465: ...ation with factory settings 11 2 Extra Local Control 11 3 View Extra Local Control with factory settings 11 4 Operate Extra Local Control example settings 11 5 Local Control State Retained When Relay Deenergized 11 6 Rotating Default Display 11 7 Additional Rotating Default Display Example 11 9 FIGURES Figure 11 1 Local Control Switch Configured as an ON OFF Switch 11 3 Figure 11 2 Local Control S...

Page 466: ......

Page 467: ...he progression of the shot counter during reclosing relay testing Access the reclosing relay shot counter screen via the OTHER pushbutton The following screen appears BTT DATE TIME 79 TAR BRK_MON Scroll down with the down arrow button and select function 79 Upon selecting function 79 the following screen appears shown here with factory default settings SET RECLOSURES 3 RECLOSE COUNT 0 If the reclo...

Page 468: ...ecloser Control in the reset state front panel RESET LED illuminated the shot counter screen appears as SET RECLOSURES 3 RECLOSE COUNT 0 The SEL 351R trips the recloser open and goes to the reclose cycle state front panel CYCLE LED illuminates The shot counter screen still appears as SET RECLOSURES 3 RECLOSE COUNT 0 The first open interval 79OI1 300 times out the shot counter increments from 0 to ...

Page 469: ...ontrol to enable disable schemes trip close breakers etc via the front panel In more specific terms local control asserts sets to logical 1 or deasserts sets to logical 0 what are called local bits LB1 through LB8 LB1 through LB16 for the SEL 351R 2 These local bits are available as Relay Word bits and are used in SELOGIC control equations see Rows 25 and 58 in Table 9 4 Local control can emulate ...

Page 470: ...ion 7 Inputs Outputs Timers and Other Control Logic for more information on local control View Extra Local Control with factory settings Access extra local control via the CNTRL pushbutton If local control switches exist i e corresponding switch position label settings were made the following message displays with the rotating default display messages Press CNTRL for Extra Control Press the CNTRL ...

Page 471: ...IP Position RETURN Press the SELECT pushbutton and the operate option for the displayed local control switch displays MANUAL TRIP TRIP Yes No Scroll left with the left arrow button and then select Yes The display then shows the new local control switch position MANUAL TRIP Position TRIP Because this is an OFF MOMENTARY type switch the MANUAL TRIP switch returns to the RETURN position after momenta...

Page 472: ... local bit states are retained For example suppose the local control switch with local bit output LB1 is configured as an ON OFF type switch see Figure 11 1 Additionally suppose it is used to enable disable reclosing If local bit LB1 is at logical 1 reclosing is enabled If power to the relay is turned off and then turned on again local bit LB1 remains at logical 1 and reclosing is still enabled Th...

Page 473: ...ontrol Switches in Section 7 Inputs Outputs Timers and Other Control Logic for more information on local control DWG FRONT 10 1 R PULLMAN WASHINGTON USA SCHWEITZER ENGINEERING LABORATORIES 1 4 5 2 3 SEL 351R RECLOSER CONTROL PORT F SERIAL 9 9 8 7 6 Press CNTRL for Extra Control IA 50 IB 50 IC 50 IN 0 If display point labels e g 79 DISABLED and BREAKER OPEN are enabled for display they also enter i...

Page 474: ...lay Point Label Settings DP2 LB1 DP4 IN101 logical 0 logical 0 DP2_1 79 ENABLED DP2_0 79 DISABLED DP4_1 BREAKER CLOSED DP4_0 BREAKER OPEN DWG FRONT 12 1 R PULLMAN WASHINGTON USA SCHWEITZER ENGINEERING LABORATORIES 1 4 5 2 3 SEL 351R RECLOSER CONTROL PORT F SERIAL 9 9 8 7 6 79 DISABLED BREAKER OPEN Press CNTRL for Extra Control IA 50 IB 50 IC 50 IN 0 DP2 LB1 DP4 IN101 logical 1 logical 0 DP2_1 79 E...

Page 475: ...EAKER CLOSED Press CNTRL for Extra Control IA 50 IB 50 IC 50 IN 0 In the preceding example only two display points DP2 and DP4 and their corresponding dis play point labels are set If additional display points and corresponding display point labels are set the additional enabled display point labels join the 2 seconds per screen rotation on the front panel display Display point label settings are ...

Page 476: ......

Page 477: ...ions 12 7 Current Voltage and Frequency Columns 12 8 Output Input Protection and Control Columns 12 8 Sequential Events Recorder SER Report 12 21 SER Triggering 12 21 Making SER Trigger Settings 12 21 Retrieving SER Reports 12 22 Clearing SER Report 12 23 Example Standard 15 Cycle Event Report 12 23 Example Sequential Events Recorder SER Report 12 30 TABLES Table 12 1 Event Types 12 4 Table 12 2 S...

Page 478: ......

Page 479: ...ed lines of information each time a programmed condition changes state The control stores the latest 512 lines of the SER report in nonvolatile memory If the report fills up newer rows overwrite the oldest rows in the report See Figure 12 5 for an example SER report STANDARD 15 30 CYCLE EVENT REPORTS See Figure 12 2 for an example event report Note Figure 12 2 is on multiple pages Event Report Len...

Page 480: ...f the 51xxT and 67xxT Relay Word bits represent time delayed overcurrent tripping functions 81D1T is a time delayed underfrequency tripping function that is turned off in the factory default settings PB9 is the front panel control TRIP pushbutton and OC is the serial port OPEN Command output Because the TRIP function automatically triggers an event report these conditions do not have to be entered...

Page 481: ... port Trigger command TRI is to generate standard event reports primarily for testing purposes The Pulse Output command PUL asserts the output contacts for testing purposes or for remote control If output contact OUT101 through OUT107 asserts via the PUL command the control automatically triggers a standard event report The PUL command is available through serial port communication and the relay f...

Page 482: ...he HIS Event Summaries History command Event Type The Event field shows the event type The possible event types and their descriptions are shown in the table below Note the correspondence to the preceding event report triggering conditions see Standard Event Report Triggering in this section Table 12 1 Event Types Event Type Description AG BG CG Single phase to ground faults Appends T if TRIP asse...

Page 483: ...r settings Targets The control reports the targets at the rising edge of TRIP The targets are displayed in binary format See Front Panel Status and Trip Target LEDs in Section 1 Factory Set Logic Currents The Currents A pri ABCNGQ field shows the currents present in the event report row containing the maximum phase current The listed currents are Phase A channel IA B channel IB C channel IC Neutra...

Page 484: ...nd event report at 1 4 cycle resolution EVE S16 L10 Display 10 cycles of the most recent report at 1 16 cycle resolution EVE C 2 Display the second report in Compressed ASCII format at 1 4 cycle resolution EVE L Display the most recent report at 1 16 cycle resolution EVE R Display the most recent report at 1 16 cycle resolution analog and digital data are unfiltered raw EVE 2 D L10 Display 10 cycl...

Page 485: ...ters for ac current and voltage are fixed You can adjust the optoisolated input debounce via debounce settings see Figure 7 1 in Section 7 Inputs Outputs Timers and Other Control Logic Raw event reports display one extra cycle of data at the beginning of the report Clearing Standard Event Report Buffer The HIS C command clears the event summaries and corresponding standard event reports from nonvo...

Page 486: ... by channel VC primary kV wye connected VS Voltage measured by channel VS primary kV Freq Frequency of voltage channel VA Hz Note that the ac values change from plus to minus values in Figure 12 2 indicating the sinusoidal nature of the waveforms Other figures help explain the information available in the event report current columns Figure 12 3 shows how event report current column data relates t...

Page 487: ...ted 6 Output contact OUT106 asserted b Both OUT105 and OUT106 asserted Out 7A OUT107 ALARM 7 Output contact OUT107 asserted A Output contact ALARM asserted b Both OUT107 and ALARM asserted Out TC RCTR RCCL see Figure 7 30 T High voltage trip FET RCTR asserted C High voltage close FET RCCL asserted b Both RCTR and RCCL asserted In 12 IN101 IN102 1 Optoisolated input IN101 asserted 2 Optoisolated in...

Page 488: ...nt element timing to reset after having timed out when element reset is set for 1 cycle not electromechanical reset 50 P 50A 50B 50C A Single phase instantaneous overcurrent element 50A picked up B Single phase instantaneous overcurrent element 50B picked up C Single phase instantaneous overcurrent element 50C picked up a Both 50A and 50B picked up b Both 50B and 50C picked up c Both 50C and 50A p...

Page 489: ...ual current element F32V picked up R32V v Reverse zero sequence voltage polarized residual current R32V picked up F32N N Forward zero sequence voltage polarized neutral current directional element F32N picked up R32N n Reverse zero sequence voltage polarized neutral current directional element R32N picked up 67 P 67 N 67 G 67P1 67P4 67N1 67N4 67G1 67G4 4 Level 4 instantaneous element 67_4 picked u...

Page 490: ...7A_ 27B_ and 27C_ elements picked up 27 PP 27AB 27BC 27CA A AB phase to phase instantaneous undervoltage element 27AB picked up B BC phase to phase instantaneous undervoltage element 27BC picked up C CA phase to phase instantaneous undervoltage element 27CA picked up a 27AB and 27CA elements picked up b 27AB and 27BC elements picked up c 27BC and 27CA elements picked up 3 27AB 27BC and 27CA elemen...

Page 491: ...stantaneous overvoltage element 59V1 picked up Q Negative sequence instantaneous overvoltage element 59Q picked up b Both 59V1 and 59Q picked up 59 N 59N1 59N2 1 First ground instantaneous overvoltage element 59N1 picked up 2 Second ground instantaneous overvoltage element 59N2 picked up b Both 59N1 and 59N2 picked up 59 S 59S1 59S2 1 First channel VS instantaneous overvoltage element 59S1 picked ...

Page 492: ...quency element 81D3 picked up 4 Frequency element 81D4 picked up b Both 81D3 and 81D4 picked up 81 56 81D5 81D6 5 Frequency element 81D5 picked up 6 Frequency element 81D6 picked up b Both 81D5 and 81D6 picked up 79 RCSF CF 79RS Reclosing function disabled 79CY 79LO S Reclose supervision failure condition RCSF asserts for only 1 4 cycle F Close failure condition CF asserts for only 1 4 cycle R Rec...

Page 493: ...asserted b Both LB5 and LB6 asserted Lcl 78 LB7 LB8 7 Local bit LB7 asserted 8 Local bit LB8 asserted b Both LB7 and LB8 asserted Rem 12 RB1 RB2 1 Remote bit RB1 asserted 2 Remote bit RB2 asserted b Both RB1 and RB2 asserted Rem 34 RB3 RB4 3 Remote bit RB3 asserted 4 Remote bit RB4 asserted b Both RB3 and RB4 asserted Rem 56 RB5 RB6 5 Remote bit RB5 asserted 6 Remote bit RB6 asserted b Both RB5 an...

Page 494: ...IC control equation variable timer input SV_ asserted timer timing on pickup time timer output SV_T not asserted SELOGIC control equation variable timer input SV_ asserted timer timed out on pickup time timer output SV_T asserted SELOGIC control equation variable timer input SV_ not asserted timer previously timed out on pickup time timer output SV_T remains asserted while timer timing on dropout ...

Page 495: ...nt 1 deasserted and UnBlocking Block element 2 asserted b UnBlocking Block element 1 asserted and UnBlocking Block element 2 asserted Z3XT Z3XT Zone 3 eXTension element asserted DSTR DSTR Directional carrier StarT element asserted NSTR NSTR Nondirectional carrier STarT element asserted STOP STOP STOP carrier element asserted BTX BTX Block Trip eXtension element asserted TMB A 12 TMB1A TMB2A 1 Tran...

Page 496: ...ansmit MIRRORED BIT 5 channel A deasserted and Transmit MIRRORED BIT 6 channel A asserted b Transmit MIRRORED BIT 5 channel A asserted and Transmit MIRRORED BIT 6 channel A asserted TMB A 78 TMB7A TMB8A 7 Transmit MIRRORED BIT 7 channel A asserted and Transmit MIRRORED BIT 8 channel A deasserted 8 Transmit MIRRORED BIT 7 channel A deasserted and Transmit MIRRORED BIT 8 channel A asserted b Transmi...

Page 497: ...A deasserted 6 Receive MIRRORED BIT 5 channel A deasserted and Receive MIRRORED BIT 6 channel A asserted b Receive MIRRORED BIT 5 channel A asserted and Receive MIRRORED BIT 6 channel A asserted RMB A 78 RMB7A RMB8A 7 Receive MIRRORED BIT 7 channel A asserted and Receive MIRRORED BIT 8 channel A deasserted 8 Receive MIRRORED BIT 7 channel A deasserted and Receive MIRRORED BIT 8 channel A asserted ...

Page 498: ...ailability BAD element asserted and Channel B communications availability BAD element deasserted B Channel A communications availability BAD element deasserted and Channel B communications availability BAD element asserted b Channel A communications availability BAD element asserted and Channel B communications availability BAD element asserted PB1 PB1 see Figure 1 35 Ground Enabled pushbutton out...

Page 499: ...el pushbutton PB9 Instantaneous overcurrent element pickups 67P1 67G1 67N1 Any time one of these elements picks up or drops out the relay time tags the change in the SER The other two SER factory settings SER2 and SER3 trigger rows in the SER event report for the following conditions Changes in breaker status 52A and reclose operations When control is powered down due to low battery TOSLP Other ba...

Page 500: ...bottom of the report Chronological progression through the report is down the page and in descending row number SER 10 33 If you enter the SER command followed by two numbers 10 and 33 in this example 10 33 all the rows between and including rows 10 and 33 are displayed if they exist They display with the older row row 33 at the beginning top of the report and the newer row row 10 at the end botto...

Page 501: ...Y then the dates are entered as in the above examples Month Day Year If setting DATE_F YMD then the dates are entered Year Month Day If the requested SER event report rows do not exist the control responds No SER Data Clearing SER Report Clear the SER report from nonvolatile memory with the Access Level 2 command SER C as shown in the following example SER C ENTER Clear the SER Are you sure Y N Y ...

Page 502: ... 1 2 1 9 7 5 0 0 60 01 T b 550 151 28 673 0 8 7 8 2 3 0 0 60 01 T B 824 55 158 721 1 2 1 8 7 5 0 0 60 01 T B 548 150 29 669 0 8 7 8 2 3 0 0 60 01 T Bb 826 56 157 725 1 2 1 8 7 5 0 0 60 01 T Bb 7 548 151 28 671 0 8 7 8 2 3 0 0 60 07 T Bb 702 64 123 643 2 7 1 2 6 9 0 0 60 07 T Bb 299 82 15 366 1 9 7 3 2 8 0 0 60 07 T Bb 291 37 44 284 5 1 0 3 6 1 0 0 60 07 T Bb 8 27 8 0 35 3 2 6 8 3 3 0 0 60 07 T Bb ...

Page 503: ...T Bb 0 1 1 2 5 8 0 0 5 8 0 0 60 01 T Bb Protection and Control Elements 51 50 32 67 Dm 27 59 25 81 TS Lcl Rem Ltch SELogic Variable V 5 2 ih ZL Timers PPNNGG P PN PN P P1 9S 7135 7mo lO 13571357O1357 1111111 121212QPP QG PNGQ QG PPSPPQNS VFA B246 9et dP 24682468C2468 1234567890123456 1 R 0 b 7 R 0 b 7 R 0 b 7 R 0 b 7 2 R 0 b 7 R 0 b 7 R 0 b 7 R 0 b 7 3 R 0 b 7 R 0 b 7 R 0 b 7 R 0 b 7 4 R 0 b 7 R 0...

Page 504: ... 7 C 0 b 7 12 C 0 b 7 C 0 b 7 C 0 b 7 C 0 b 7 13 C 0 b 7 C 0 b 7 C 0 b 7 C 0 b 7 14 C 0 b 7 C 0 b 7 C 0 b 7 C 0 b 7 15 C 0 b 7 C 0 b 7 C 0 b 7 C 0 b 7 Communication Elements S PZ EE ZDNS TMB RMB TMB RMB RRC 3O T3KKCWU 3SSTB A A B B OBB PPPPPPPPP PT PRREETFB XTTOT 1357 1357 1357 1357 KAA BBBBBBBBB OF TXBYYTCB TRRPX 2468 2468 2468 2468 DD 123456789 1 2 3 4 5 6 ...

Page 505: ...ot shown in this example Figure 12 2 Example Standard 15 Cycle Event Report 1 4 Cycle Resolution Figure 12 3 and Figure 12 4 look in detail at 1 cycle of A phase current channel IA identified in Figure 12 2 Figure 12 3 shows how the event report ac current column data relates to the actual sampled waveform and RMS values Figure 12 4 shows how the event report current column data can be converted t...

Page 506: ...uction Manual Figure 12 3 Derivation of Event Report Current Values and RMS Current Values From Sampled Current Waveform In Figure 12 3 note that any two rows of current data from the event report in Figure 12 2 1 4 cycle apart can be used to calculate RMS current values ...

Page 507: ...tion of Phasor RMS Current Values From Event Report Current Values In Figure 12 4 note that two rows of current data from the event report in Figure 12 2 1 4 cycle apart can be used to calculate phasor RMS current values In Figure 12 4 at the present sample the phasor RMS current value is IA 991 A 33 7 ...

Page 508: ...6 971 79RS Asserted 16 06 01 98 12 23 36 975 SH3 Deasserted 15 06 01 98 12 23 36 975 SH0 Asserted 14 06 01 98 12 23 52 527 51G1T Asserted 13 06 01 98 12 23 52 527 79CY Asserted 12 06 01 98 12 23 52 527 79RS Deasserted 11 06 01 98 12 23 52 527 TRIP Asserted 10 06 01 98 12 23 52 535 51P1T Asserted 9 06 01 98 12 23 52 560 52A Deasserted 8 06 01 98 12 23 52 598 51P1T Deasserted 7 06 01 98 12 23 52 602...

Page 509: ...e state 79CY and moves off of reset 79RS Related setting Reclose Initiate 79RI TRIP The control TRIP output asserts Related setting TR 51P1T 51P2T 51G1T 51G2T 51N1T 51N2T 67P2T 67G2T 67N2T 67N3T 81D1T PB9 OC 10 Phase time overcurrent element time delayed output 51P1T Trip is already in progress due to ground time overcurrent element 9 Recloser opens 8 7 Phase and ground time overcurrent elements d...

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Page 511: ...t Methods 13 4 Testing Via Front Panel Indicators 13 4 Testing Via Output Contacts 13 4 Testing Via Sequential Events Recorder 13 5 SEL 351R Self Tests 13 5 SEL 351R Troubleshooting 13 8 Inspection Procedure 13 8 Troubleshooting Procedure 13 8 All Front Panel LEDs Dark 13 8 Cannot See Characters on LCD Screen 13 9 SEL 351R Does Not Respond to Commands From Device Connected to Serial Port 13 9 SEL ...

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Page 513: ...s such as operating speed and element accuracy b Ensure that the SEL 351R meets the requirements of the intended application c Gain familiarity with SEL 351R settings and capabilities What to test All protection elements and logic functions critical to the intended application SEL performs detailed acceptance testing on all new recloser control models and versions We are certain the recloser contr...

Page 514: ...ioning correctly c Ensure that auxiliary equipment is functioning correctly What to test Anything not shown to have operated during an actual fault within the past maintenance interval The SEL 351R uses extensive self testing capabilities and features detailed metering and event reporting functions that lower the utility dependence on routine maintenance testing Use the SEL 351R reporting function...

Page 515: ...1 Additional Front Panel Interface Details EVENT Command The control generates a 15 or 30 cycle event report in response to faults or disturbances Each report contains current and voltage information SEL 351R element states control cable pin statuses and input output contact information If you question the control response or your test method use the event report for more information The EVENT com...

Page 516: ...row of the LCD displays all elements asserted in Relay Word Row 6 The SEL 351R maps the state of the elements in Relay Word Row 6 on the bottom row of LEDs The 51P1T element state is reflected on the LED labeled RS See Table 9 3 for the correspondence between the Relay Word elements and the TAR command To view the 51P1T element status from the serial port issue the TAR 51P1T command The SEL 351R w...

Page 517: ... following corrective actions for out of tolerance conditions see Table 13 1 Protection Disabled The SEL 351R disables overcurrent elements and trip close logic All output contacts and FETs driving the trip and close pins of the control cable are deenergized The EN front panel LED is extinguished ALARM Output The ALARM output contact signals an alarm condition by going to its deenergized state If ...

Page 518: ...ds Failure 4 50 V 5 40 5 50 V Yes Latched 12 V PS Warning 11 50 V 12 50 V No Pulsed Measures the 12 V power supply every 10 seconds Failure 11 20 V 14 00 V Yes Latched 15 V PS Warning 14 40 V 15 60 V No Pulsed Measures the 15 V power supply every 10 seconds Failure 14 00 V 16 00 V Yes Latched TEMP Warning 40 C 85 C No Measures the temperature at the A D voltage reference every 10 seconds Failure 5...

Page 519: ...essor Crystal Failure Yes Latched The SEL 351R monitors the microprocessor crystal If the crystal fails the relay displays CLOCK STOPPED on the LCD display The test runs continuously Micro processor main circuit board Failure Yes Latched The microprocessor on the main circuit board examines each program instruction memory access and interrupt The SEL 351R displays VECTOR nn on the LCD upon detecti...

Page 520: ... 351R TROUBLESHOOTING Inspection Procedure Complete the following procedure before disturbing the SEL 351R After you finish the inspec tion proceed to the Troubleshooting Procedure 1 Measure and record the AC power supply voltage at the power input terminals positions 17 and 20 on the terminal block 2 Record battery voltage of the two series connected batteries at the battery terminals 3 Measure a...

Page 521: ...patibility including cabling error 3 SEL 351R serial port has received an XOFF halting communications Type CTRL Q to send control an XON and restart communications SEL 351R Does Not Respond to Faults 1 SEL 351R improperly set 2 Improper test source settings 3 CT or PT input wiring error 4 Analog input cable between transformer secondary and main board loose or defective 5 Failed SEL 351R self test...

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Page 523: ...sting Firmware B 9 F Upload New Firmware B 10 G Check Relay Self Tests B 12 EN LED Illuminated and Access Level 0 Prompt Visible B 12 EN LED Illuminated But No Access Level 0 Prompt B 12 EN LED Not Illuminated B 13 IO_BRD Fail Status Message B 13 CR_RAM EEPROM and IO_BRD Fail Status Messages B 13 H Verify Calibration Status Breaker Wear and Metering B 15 I Return Relay to Service B 15 APPENDIX C S...

Page 524: ...Time Overcurrent Elements F 1 Coordinating Negative Sequence Overcurrent Elements F 2 Coordination Guidelines F 3 Coordination Example F 3 Traditional Phase Coordination F 4 Apply the Feeder Relay Negative Sequence Overcurrent Element Guidelines 1 to 3 F 4 Convert Equivalent Phase Overcurrent Element Settings to Negative Sequence Overcurrent Element Settings Guideline 4 F 5 Negative Sequence Overc...

Page 525: ...Set G 10 Set SELOGIC Control Equations Directly to 1 or 0 G 10 Set SELOGIC Control Equations Directly to 1 or 0 Example G 10 SELOGIC Control Equation Limitations G 11 Processing Order and Processing Interval G 11 APPENDIX H DISTRIBUTED NETWORK PROTOCOL DNP V3 00 H 1 Overview H 1 Configuration H 1 Standard Mode DNP Operation H 1 Extended Mode DNP Operation H 2 EIA 232 Physical Layer Operation H 2 A...

Page 526: ...nications Parameters B 6 Figure B 8 Establishing Communication B 6 Figure B 9 Matching Computer to Relay Parameters B 9 Figure B 10 Example Receive File Dialog Box B 9 Figure B 11 Example Filename Identifying Old Firmware Version B 10 Figure B 12 Downloading of Old Firmware B 10 Figure B 13 Selecting the New Firmware to Send to the Relay B 12 Figure B 14 Transfer of New Firmware to the Relay B 12 ...

Page 527: ...logic so that previously latched A B C target LEDs now clear when a trip is received and no fault current is present Improved front panel target logic so that correct phase targeting appears when tripping with no intentional delay most noticeable during testing Improved fault locator event type determination during short duration faults most likely seen during testing Doubled the voltage settings ...

Page 528: ...bal setting RSTLED for defeating the 3 second delay on the LOCK operator control Added metering self check status breaker wear counters and time overcurrent element pickups as options for display points rotating default display Changed default SELOGIC setting LED11 AC SUPPLY LED to LED DISCHG SEL 351R R108 V0 Z001001 D20010501 This firmware differs from previous versions as follows Prevented the S...

Page 529: ...ctive settings group New battery monitor charger mode NOMSG indicates that communications with the battery monitor charger are temporarily suspended just after power up settings change or active settings group change This keeps the status from erroneously going to a sealed in warning state Target LEDs can no longer be reset if a TRIP condition is present MIRRORED BITS Relay Word bit labels e g TMB...

Page 530: ...confirmation before saving the map modifications Added the MB8A and MB8B serial port protocol settings options for MIRRORED BITS protocol operating on communication channels requiring an 8 data bit format SEL 351R R105 V0 This firmware differs from previous versions as follows Added zero sequence voltage polarized neutral current directional elements to Best Choice Ground Directional Logic Fixed p...

Page 531: ...ding SELOGIC control equation setting FAULT now momentarily suspends demand metering updating and peak recording as explained in Section 8 Breaker Recloser Monitor Battery System Monitor Metering and Load Profile Functions Fixed MIRRORED BITS problem Changed entry Obj 50 Var 1 Time and Date in Table H 2 in Appendix H Distributed Network Protocol DNP V3 00 Fixed battery charger problem Fixed proble...

Page 532: ...n your SEL 351R view the status report using the serial port STATUS command or the front panel STATUS pushbutton The status report displays the FID label with the Part Revision number in bold FID SEL 351R R107 V0 Z001001 D20010501 The Firmware revision number follows the R and the release date follows the D ...

Page 533: ... the location of the relay and with a direct connection from the personal computer to one of the serial ports of the relay Do not attempt to load firmware from a remote location because problems can arise that you will not be able to address from a distance When upgrading at the substation do not attempt to load the firmware into the relay through an SEL 2020 or SEL 2030 Communications Processor P...

Page 534: ...Settings prompt be certain Yes is highlighted and press the SELECT pushbutton Step 11 Connect an SEL C234A or equivalent serial communications cable to the relay serial port you identified earlier B Establish Terminal Connection To establish communication between your relay and a personal computer you must be able to modify your serial communications parameters data transmission rate data bits par...

Page 535: ...computer serial port you will use to communicate with the relay Figure B 2 and click OK Step 6 Establish serial port communications parameters Note that these settings for your computer Figure B 3 must match the settings you recorded earlier for the relay hardware and software flow control settings for example should match what you recorded earlier for the relay RTSCTS setting If computer settings...

Page 536: ...r Figure B 4 Terminal Emulation Startup Prompt Failure to Connect If you do not see the prompt press Enter again If you still do not see the prompt you have either selected the incorrect serial communications port on your computer or the computer speed setting does not match the data transmission rate of your relay Perform the following steps to reattempt a connection Step 1 Terminate communicatio...

Page 537: ...ould see a dialog box similar to Figure B 6 b Select a different port in the Connect using list box and click OK Figure B 6 Correcting Port Setting Step 3 Correct communications parameters a From the File menu choose Properties b Choose Configure to see a dialog box similar to Figure B 3 Step 4 Change settings in the appropriate list boxes and click OK ...

Page 538: ...E or Sequential Events Recorder SER data that you want to retain retrieve and record this information prior to performing the firmware upgrade If you have either SEL 5010 Relay Assistant Software or SEL 5030 ACSELERATOR Software available for your relay use this software to record existing relay settings and proceed to Start SELBOOT on page B 7 Otherwise carefully perform the following steps to mi...

Page 539: ...y installed firmware version and the use of relay memory this cannot be ensured Saving settings is always recommended Step 6 Under the Transfer menu in HyperTerminal select Capture Text and click Stop Step 7 Print the text file you created in steps 4 through 6 and save this record for later reference Step 8 Take note of the present relay data transmission setting for later use in the upgrade proce...

Page 540: ... the highest possible data transmission rate for the relay In SELBOOT the relay supports firmware upload and download speeds as fast as 38400 baud Step 2 Use the BAUD BAU command to change the data transmission rate in the relay BAU 38400 Enter Match Computer Communications Speed to the Relay Step 1 In HyperTerminal terminate communication Figure B 5 Step 2 On the File menu choose Properties Step ...

Page 541: ...ve File You should see a dialog box similar to Figure B 10 Figure B 10 Example Receive File Dialog Box Step 2 Choose a filename that clearly identifies your existing firmware version SEL generally lists the firmware revision number first then the product number All such files have an s19 extension r100387 s19 for example Note After beginning the following procedure you will need to enter this info...

Page 542: ...Step 6 Provide the filename that you chose earlier and click OK For a successful download you should see a dialog box similar to Figure B 12 After the transfer the relay will respond Download completed successfully Figure B 11 Example Filename Identifying Old Firmware Version Figure B 12 Downloading of Old Firmware F Upload New Firmware Step 1 Insert the disk containing the new firmware into the a...

Page 543: ...start the firmware receive Step 3 Type Y to erase the existing firmware and load new firmware To abort press Enter Are you sure you wish to erase the existing firmware Y N Erasing Erase successful Note The relay prompts you to press a key e g Enter and begin the transfer After you press a key to begin the transfer you have about one minute to complete the following procedure before the relay times...

Page 544: ...y erases existing firmware and prior to your selecting Send File After the transfer completes the relay displays the following Upload completed successfully Attempting a restart G Check Relay Self Tests The relay EN front panel LED should illuminate if the relay retained original relay settings through the upload LED illumination may be delayed as long as two minutes Press Enter to see if the Acce...

Page 545: ...he ACC and 2AC commands to enter Access Level 2 and proceed to IO_BRD Fail Status Message Step 1 If fail status messages display for any combination of CR_RAM EEPROM and IO_BRD the relay baud rate has reverted to the factory default of 2400 baud Go to CR_RAM EEPROM and IO_BRD Fail Status Messages Step 1 IO_BRD Fail Status Message Step 1 Use the INITIALIZE INI command to reinitialize the I O board ...

Page 546: ...k containing your firmware or the number from the new part number sticker if supplied Step 8 Press Enter to have the Access Level 0 prompt appear on your terminal screen Step 9 Use the ACC and 2AC commands to reenter Access Level 2 Factory default passwords will be in effect Step 10 Restore original settings and passwords a If you have SEL 5010 software or SEL 5030 ACSELERATOR Software restore ori...

Page 547: ...at all relay self test parameters are within tolerance Step 3 If you used the Breaker Wear Monitor use the BRE command to check the data and see if the relay retained breaker wear data through the upgrade procedure If the relay did not retain these data use the BRE Wn command to reload the percent contact wear values for each pole of Circuit Breaker n n 1 2 3 or 4 you recorded in Save Settings and...

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Page 549: ...fault is 01 SETTLE Time in seconds that transmission is delayed after the request to send RTS line asserts This delay accommodates transmitters with a slow rise time OPERATION 1 The relay ignores all input from this port until it detects the prefix character and the two byte address 2 Upon receipt of the prefix and address the relay enables echo and message transmission 3 Wait until you receive a ...

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Page 551: ...eparate data streams to exploit this feature The binary commands and ASCII commands can also be accessed by a device that does not interleave the data streams SEL Application Guide AG95 10 Configuration and Fast Meter Messages is a comprehensive description of the SEL binary messages Below is a description of the messages provided in the SEL 351R Recloser Control MESSAGE LISTS Binary Message List ...

Page 552: ...st Meter configuration message 0004 Settings change bit A5C200000000 Demand Fast Meter configuration message 0004 Settings change bit A5C300000000 Peak Demand Fast Meter configuration message 0100 SEL protocol Fast Operate 0101 LMD protocol Fast Operate 0005 DNP V3 00 protocol No Fast Operate 0006 MIRRORED BITS protocol No Fast Operate 00 Reserved checksum 1 byte checksum of preceding bytes A5C1 F...

Page 553: ... in Fast Meter message 564200000000 Analog channel name VB 01 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 564300000000 Analog channel name VC 01 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 565300000000 Analog channel name VS 01 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter mess...

Page 554: ...3 Demand Peak Demand Fast Meter Configuration Messages In response to the A5C2 or A5C3 request the relay sends the following block Data Description A5C2 or A5C3 Command Demand A5C2 or Peak Demand A5C3 EE Length 01 of status flag bytes 00 Scale factors in meter message 00 of scale factors 16 of analog input channels 01 of samples per channel 00 of digital banks 00 of calculation blocks 0004 Analog ...

Page 555: ...set in Fast Meter message 50432B000000 Analog channel name PC 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 50332B000000 Analog channel name P3 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 51412B000000 Analog channel name QA 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter m...

Page 556: ...log channel name QB 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 51432D000000 Analog channel name QC 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 51332D000000 Analog channel name Q3 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 00 Reserved checksum 1 byte checksu...

Page 557: ...nds 31 Operate code open breaker 1 11 Operate code close breaker 1 00 Operate code clear remote bit RB1 20 Operate code set remote bit RB1 40 Operate code pulse remote bit RB1 01 Operate code clear remote bit RB2 21 Operate code set remote bit RB2 41 Operate code pulse remote bit RB2 02 Operate code clear remote bit RB3 22 Operate code set remote bit RB3 42 Operate code pulse remote bit RB3 03 Ope...

Page 558: ...e pulse remote bit RB15 0F Operate code clear remote bit RB16 2F Operate code set remote bit RB16 4F Operate code pulse remote bit RB16 00 Reserved checksum 1 byte checksum of all preceding bytes A5E0 Fast Operate Remote Bit Control The external device sends the following message to perform a remote bit operation Data Description A5E0 Command 06 Length 1 byte Operate code 00 07 clear remote bit RB...

Page 559: ...ttings via the SET L command SV4 RB4 SV4 input is RB4 OUT104 SV4T route SV4 timer output to OUT104 via the SET command SV4PU 0 SV4 pickup time 0 SV4DO 30 SV4 dropout time is 30 cycles To pulse the contact send the A5E006430DDB command to the relay A5E3 Fast Operate Breaker Control The external device sends the following message to perform a fast breaker open close Data Description A5E3 Command 06 ...

Page 560: ... 1 or greater Otherwise they appear as nonexistant Local remote and latch bits LBn RBn and LTn 9 16 are only available on an SEL 351R 2 and will otherwise appear as nonexistant The DNA message for the SEL 351R is STX LED10 LED11 LED12 LED13 LED14 LED15 LED16 LED17 yyyy LED18 LED19 LED20 LED21 LED22 LED23 LED24 LED25 yyyy 50A1 50B1 50C1 50A2 50B2 50C2 50A3 50B3 yyyy 50C3 50A4 50B4 50C4 50AB1 50BC1 ...

Page 561: ...T105 OUT104 OUT103 OUT102 OUT101 yyyy 3PO SOTFE Z3RB KEY EKEY ECTT WFC PT yyyy PTRX2 PTRX PTRX1 UBB1 UBB2 UBB Z3XT DSTRT yyyy NSTRT STOP BTX TRIP OC CC CLG NOMSG yyyy 67P2S 67N2S 67G2S 67Q2S PDEM NDEM GDEM QDEM yyyy PB1 PB2 PB3 PB4 PB5 PB6 PB7 PB8 yyyy PB9 PINBD PINC PINE PINF SW1 DISCHG LED9 yyyy LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8 yyyy OCP OCG OLP OLG OLS HTP HTG HLP yyyy HLG CLP RPP RPG RPS...

Page 562: ...A command the relay sends names of the bits transmitted in the Status Byte in the A5D1 message The first name is the MSB the last name is the LSB The BNA message is STX STSET yyyy ETX where yyyy is the 4 byte ASCII representation of the checksum indicates an unused bit location The BNA command is available from Access Level 1 and higher ...

Page 563: ...on message provides data for an external computer to extract data from other compressed ASCII commands To obtain the configuration message for the compressed ASCII commands available in an SEL relay type CAS CR The relay sends STX CAS n yyyy CR COMMAND 1 ll yyyy CR H xxxxx xxxxx xxxxx yyyy CR D ddd ddd ddd ddd ddd yyyy CR COMMAND 2 ll yyyy CR h ddd ddd ddd yyyy CR D ddd ddd ddd ddd ddd yyyy CR COM...

Page 564: ... 10S for a 10 character string yyyy is the 4 byte hex ASCII representation of the checksum A compressed ASCII command may require multiple header and data configuration lines If a compressed ASCII request is made for data that are not available e g the history buffer is empty or invalid event request the relay responds with the following message STX No Data Available 0668 CR ETX CASCII COMMAND SEL...

Page 565: ...YEAR HOUR MIN SEC MSEC YYYY CR 1D I I I I I I I YYYY CR 14H FREQ SAM CYC_A SAM CYC_D NUM_OF_CYC EVENT LOCATION SHOT TARGETS IA IB IC IN IG 3I2 YYYY CR 1D F I I I 6S F I 17S I I I I I I YYYY CR 11H IA IB IC IG VA kV VB kV VC kV VS kV FREQ TRIG Names of elements in the relay word rows separated by spaces YYYY CR 240D I I I I F F F F F 2S 116S YYYY CR CEV R 1 YYYY CR 2H FID BCBFID YYYY CR 1D 48S 4S Y...

Page 566: ... xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR ETX where xxxx are the data values corresponding to the first line labels and yyyy is the 4 byte hex ASCII representation of the checksum CHISTORY COMMAND SEL 351R Display history data in compressed ASCII format by sending CHI CR The relay sends STX FID BCBFID yyyy CR Relay FID string Relay Battery Charger Board FID string yyyy CR REC_NUM ...

Page 567: ... Board FID string yyyy CR MONTH DAY YEAR HOUR MIN SEC MSEC yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR FREQ SAM CYC_A SAM CYC_D NUM_OF_CYC EVENT LOCATION SHOT TARGETS IA IB IC IN IG 3I2 yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR IA IB IC IG VA kV VB kV VC kV VS kV FREQ TRIG Names of elements in the relay word separated by spaces yyyy CR xxxx xxxx x...

Page 568: ...iter in the digital data field If the specified event does not exist the relay responds STX No Data Available 0668 CR ETX The Names of elements in the Relay Word separated by spaces names are listed in the Relay Word Bits table in section 9 of this manual A typical HEX ASCII Relay Word is shown below 10000004986100000000000000F120280000000001020100000000000000240C0080000000000 00000000000 Each bit...

Page 569: ...ercurrent elements 50Q5 and 50Q6 do not have associated timers compare Figure 3 13 to Figure 3 12 If 50Q5 or 50Q6 need to be used for tripping run them though SELOGIC control equation variable timers see Figures 7 25 and 7 26 and use the outputs of the timers for tripping Continue reading in Coordinating Negative Sequence Overcurrent Elements in this appendix for guidelines on coordinating negativ...

Page 570: ... time overcurrent elements and a following coordination example COORDINATING NEGATIVE SEQUENCE OVERCURRENT ELEMENTS The following coordination guidelines and example assume that the negative sequence overcurrent elements operate on 3I2 magnitude negative sequence current and that the power system is radial The negative sequence overcurrent elements in the SEL 351R Recloser Control operate on 3I2 m...

Page 571: ...etting by 3 to convert it to the negative sequence overcurrent element pickup setting in terms of 3I2 current Negative sequence overcurrent element pickup 3 equivalent phase overcurrent element pickup Any time dial lever curve type or time delay calculated for the equivalent phase overcurrent element is also used for the negative sequence overcurrent element with no conversion factor applied 5 Set...

Page 572: ...rcurrent elements Phase overcurrent elements must accommodate load and cold load pickup current The 450 A maximum feeder load current limits the sensitivity of the feeder phase overcurrent element 51F to a pickup of 600 A The feeder relay cannot back up the line recloser for phase faults below 600 A Apply the Feeder Relay Negative Sequence Overcurrent Element Guidelines 1 to 3 Applying negative se...

Page 573: ...pickup of 600 A The 51EP element speed of operation for phase to phase faults below about 2000 A is faster than that for the 51F element Convert Equivalent Phase Overcurrent Element Settings to Negative Sequence Overcurrent Element Settings Guideline 4 The equivalent phase overcurrent element 51EP element in Figure F 4 converts to true negative sequence overcurrent element settings 51QF in Figure ...

Page 574: ...distribution bus provides an even more dramatic improvement in phase to phase fault sensitivity The distribution bus phase overcurrent element pickup must be set above the combined load of all the feeders on the bus plus any emergency load conditions The bus phase overcurrent element pickup is often set at least four times greater than the pickup of the feeder phase overcurrent element it backs up...

Page 575: ...S A F Elneweihi E O Schweitzer M W Feltis Negative Sequence Overcurrent Element Application and Coordination in Distribution Protection IEEE Transactions on Power Delivery Volume 8 Number 3 July 1993 pp 915 924 This IEEE paper is the source of the coordination guidelines and example given in this appendix The paper also contains analyses of system unbalances and faults and the negative sequence cu...

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Page 577: ...ther of the following states 1 logical 1 or 0 logical 0 Logical 1 represents an element being picked up timed out or otherwise asserted Logical 0 represents an element being dropped out or otherwise deasserted A complete listing of Relay Word bits and their descriptions are referenced in Table 9 3 in Section 9 Setting the SEL 351R Recloser Control Relay Word Bit Operation Example Phase Time Overcu...

Page 578: ...1 Phase Time Overcurrent Element 51P1T Reset Indication If phase time overcurrent element 51P1T is not fully reset Relay Word bit 51P1R is in the following state 51P1R 0 logical 0 If phase time overcurrent element is fully reset Relay Word bit 51P1R is in the following state 51P1R 1 logical 1 If phase time overcurrent element 51P1T is not fully reset the element is either Timing on its curve Alrea...

Page 579: ...oltage Synchronism Check and Frequency Elements through Section 8 Breaker Recloser Monitor Battery System Monitor Metering and Load Profile Functions are SELOGIC control equations labeled SELOGIC Settings in most of the figures SELOGIC control equations are set with combinations of Relay Word bits to accomplish such functions as Tripping reclosers Assigning functions to optoisolated inputs Operati...

Page 580: ... SELOGIC control equation circuit breaker status setting is labeled 52A See Optoisolated Inputs in Section 7 Inputs Outputs Timers and Other Control Logic and Close Logic in Section 6 Close and Reclose Logic for more information on SELOGIC control equation circuit breaker status setting 52A When a circuit breaker is closed the 52a circuit breaker auxiliary contact is closed When a circuit breaker ...

Page 581: ...up indication Relay Word bits deassert ULTR 51P1 51G1 NOT 51P1 51G1 As stated previously the logic within the parentheses is performed first In this example the states of Relay Word bits 51P1 and 51G1 are ORed together Then the NOT operator is applied to the logic resultant from the parentheses If either one of 51P1 or 51G1 is still asserted e g 51G1 1 logical 1 the unlatch condition is not true U...

Page 582: ...etting example allow setting ER to see each transition individually Suppose a ground fault occurs and a breaker failure condition finally results Figure G 1 demonstrates the action of the rising edge operator on the individual elements in setting ER Figure G 1 Result of Rising Edge Operators on Individual Elements in Setting ER Note in Figure G 1 that setting ER sees three separate rising edges du...

Page 583: ...Relay Word bit 81D1T deasserts and an event report is generated if the relay is not already generating a report that encompasses the new transition This allows a recovery from an underfrequency condition to be observed See Figure 3 30 and Table 3 11 in Section 3 Overcurrent Voltage Synchronism Check and Frequency Elements Figure G 2 demonstrates the action of the falling edge operator on the under...

Page 584: ...size of a SELOGIC control equation SELOGIC Control Equation Operation Example Tripping If tripping does not involve communications assisted or switch onto fault trip logic the SELOGIC control equation trip setting TR is the only trip setting needed Refer to Trip Logic in Section 5 Trip and Target Logic Note that Figure 5 1 in Section 5 Trip and Target Logic appears quite complex But since tripping...

Page 585: ...1 1 1 logical 1 and an instantaneous trip results This logic is commonly used in fuse saving schemes for distribution feeders If the reclosing relay shot counter advances to shot 1 for the reclose that follows the trip Relay Word bit SH0 is in the following state SH0 0 logical 0 If maximum phase current is above the phase instantaneous overcurrent element pickup setting 50P1P for the reoccurring f...

Page 586: ... logical 0 Under the SHO Command Show View Settings in Section 10 Serial Port Communications and Commands note that a number of the factory SELOGIC control equation settings are set directly to 1 or 0 The individual SELOGIC control equation settings explanations referenced in Settings Sheets 13 through 17 at the end of Section 9 Setting the Recloser Control discuss whether it makes logical sense t...

Page 587: ...the SELOGIC control equation settings for a particular settings group have a combined limit of 510 Relay Word bits 630 for an SEL 351P 2 that can be combined together with the SELOGIC control equation operators listed in Table G 1 SELOGIC control equation settings that are set directly to 1 logical 1 or 0 logical 0 also have to be included in this combined limit each such setting is counted as one...

Page 588: ...Section 3 Demand Ammeters PDEM NDEM GDEM QDEM Section 8 Open Breaker Logic 52A 3PO Section 5 Loss of Potential LOP ILOP Section 4 Load Encroachment ZLOUT ZLIN ZLOAD Section 4 Local Control Switches LB1 LB8 LB1 LB16 in the SEL 351R 2 Section 7 Remote Control Switches RB1 RB8 RB1 RB16 in the SEL 351R 2 Section 7 Latch Control Switches SET1 SET8 RST1 RST8 SET1 SET16 RST1 RST16 in the SEL 351R 2 LT1 L...

Page 589: ...nt Elements 51P1TC 51P1TC 51N1TC 51N2TC 51G1TC 51G2TC 51QTC 51P1 51P2 51N1 51N2 51G1 51G2 51Q 51P1T 51P2T 51N1T 51N2T 51G1T 51G2T 51QT 51P1R 51P2R 51N1R 51N2R 51G1R 51G2R 51QR Section 3 Switch onto Fault Logic CLMON SOTFE Section 5 Communications Assisted Trip Schemes PT1 LOG1 PT2 LOG2 BT PT PTRX1 PTRX2 PTRX UBB1 UBB2 UBB Z3RB KEY EKEY ECTT WFC Z3XT DSTRT NSTRT STOP BTX Section 5 Trip Logic TR TRS...

Page 590: ...l Section OUT101 OUT107 Recloser Control Cable Trip RCTR and Close RCCL OUT101 OUT107 RCTR RCCL Section 7 Targeting Front Panel LED Logic LED1 9 LED11 20 LED24 LED25 Section 5 Display Points DP1 DP8 DP1 DP16 in the SEL 351R 2 Section 7 Transmit MIRRORED BITS TMB1A TMB8A TMB1B TMB8B Appendix I Setting Group SS1 SS6 SG1 SG6 Section 7 Event Report Trigger ER Section 12 Recloser Breaker Status P1NBD P...

Page 591: ... DNP The following settings configure a port for DNP operation Label Description Default SPEED Baud rate 300 38400 2400 DNPADR DNP Address 0 65534 0 ECLASS Class for event data 0 3 2 TIMERQ Time set request interval 0 32767 min 0 DECPLA Currents scaling 0 3 decimal places 1 DECPLV Voltages scaling 0 3 decimal places 1 DECPLM Miscellaneous data scaling 0 3 decimal places 1 STIMEO Select operate tim...

Page 592: ... REPADR DNP Address to report to 0 65534 0 NUMEVE Number of events to transmit on 1 200 10 AGEEVE Age of oldest event to transmit on 0 60 sec 2 0 UTIMEO Unsolicited confirmation time out 0 50 sec 2 EIA 232 PHYSICAL LAYER OPERATION The RTS signal may be used to control an external transceiver The CTS signal is used as a DCD input indicating when the medium is in use Transmissions are only initiated...

Page 593: ...mmunications overhead Otherwise it is necessary to enable confirmation and determine how many retries to allow and what the data link time out should be The noisier the communications channel the more likely a message will be corrupted Thus the number of retries should be set higher on noisy channels Set the data link time out long enough to allow for the worst case response of the master plus tra...

Page 594: ...icited Report by Exception The slave devices send unsolicited event data to the master and the master occasionally sends integrity polls for static data Set ECLASS to a non zero value Set UNSOL Y Set NUMEVE and AGEEVE according to how often messages are desired to be sent Set CLASSA to a non zero value Set CLASSB to a non zero value Set CLASSC to a non zero value Set UNSOL Y Set NUMEVE and AGEEVE ...

Page 595: ...s Level 2 For Responses Level 2 Device Function Master þ Slave Notable objects functions and or qualifiers supported in addition to the Highest DNP Levels Supported the complete list is described in the attached table Supports enabling and disabling of unsolicited reports on a class basis Maximum Data Link Frame Size octets Transmitted 292 Received must be 292 Maximum Application Fragment Size oct...

Page 596: ... þ Always Sometimes Configurable Count 1 þ Never Always Sometimes Configurable Pulse On Never þ Always Sometimes Configurable Pulse Off Never þ Always Sometimes Configurable Latch On Never þ Always Sometimes Configurable Latch Off Never þ Always Sometimes Configurable Queue þ Never Always Sometimes Configurable Clear Queue þ Never Always Sometimes Configurable Attach explanation if Sometimes or Co...

Page 597: ...ti Fragment Responses Yes þ No In all cases within the device profile that an item is configurable it is controlled by SEL 351R settings OBJECT TABLE The supported object function and qualifier code combinations are given by the following object table Table H 2 SEL 351R DNP Object Table Object Request supported Response may generate Obj default Var Description Func Codes dec Qual Codes hex Func Co...

Page 598: ...n Counter 21 2 16 Bit Frozen Counter 21 3 32 Bit Frozen Delta Counter 21 4 16 Bit Frozen Delta Counter 21 5 32 Bit Frozen Counter with Time of Freeze 21 6 16 Bit Frozen Counter with Time of Freeze 21 7 32 Bit Frozen Delta Counter with Time of Freeze 21 8 16 Bit Frozen Delta Counter with Time of Freeze 21 9 32 Bit Frozen Counter without Flag 21 10 16 Bit Frozen Counter without Flag 21 11 32 Bit Fro...

Page 599: ... 1 7 8 30 4 16 Bit Analog Input without Flag 1 0 1 6 7 8 129 0 1 7 8 31 0 Frozen Analog Input All Variations 31 1 32 Bit Frozen Analog Input 31 2 16 Bit Frozen Analog Input 31 3 32 Bit Frozen Analog Input with Time of Freeze 31 4 16 Bit Frozen Analog Input with Time of Freeze 31 5 32 Bit Frozen Analog Input without Flag 31 6 16 Bit Frozen Analog Input without Flag 32 0 Analog Change Event All Vari...

Page 600: ...ons 51 1 Time and Date CTO 51 2 Unsynchronized Time and Date CTO 07 quantity 1 52 0 Time Delay All Variations 52 1 Time Delay Coarse 52 2 Time Delay Fine 129 07 quantity 1 60 0 All Classes of Data 1 20 21 6 60 1 Class 0 Data 1 6 60 2 Class 1 Data 1 20 21 6 7 8 60 3 Class 2 Data 1 20 21 6 7 8 60 4 Class 3 Data 1 20 21 6 7 8 70 1 File Identifier 80 1 Internal Indications 2 0 1 index 7 81 1 Storage O...

Page 601: ... phase 01 02 1020 Relay Disabled 01 02 1021 Relay diagnostic failure 01 02 1022 Relay diagnostic warning 01 02 1023 New relay event available 01 02 1024 Settings change or relay restart 01 02 1 1025 A more recent unread relay event is available These 10 12 Object Types apply to the SEL 351R 0 1 only 10 12 00 07 Remote bits RB1 RB8 10 12 08 Pulse Open command OC 10 12 09 Pulse Close command CC 10 1...

Page 602: ...agnitude and angle 30 32 06 07 IN magnitude and angle 30 32 08 09 VA magnitude kV and angle 30 32 10 11 VB magnitude kV and angle 30 32 12 13 VC magnitude kV and angle 30 32 14 15 VS magnitude kV and angle 30 32 16 17 IG magnitude and angle 30 32 18 19 I1 magnitude and angle 30 32 20 21 3I2 magnitude and angle 30 32 22 23 3V0 magnitude kV and angle 30 32 24 25 V1 magnitude kV and angle 30 32 26 27...

Page 603: ...MW out 30 32 98 101 A B C and 3 phase peak demand MVAR out 30 32 102 104 Breaker contact wear percentage A B C 30 32 2 105 Fault type see table for definition 30 32 2 106 Fault location 30 32 2 107 Fault current 30 32 2 108 Fault frequency 30 32 2 109 Fault settings group 30 32 2 110 Fault recloser shot counter 30 32 2 111 113 Fault time in DNP format high middle and low 16 bits 30 32 1 114 Relay ...

Page 604: ... values are reported in primary units Analog inputs 28 35 42 57 64 79 86 104 and 106 are further scaled according to the DECPLM setting e g if DECPLM is 3 then the value is multiplied by 1000 Analog inputs 58 63 80 85 107 115 119 and the even numbered points in 0 7 and 16 21 current magnitudes are scaled according to the DECPLA setting The even numbered points in 8 15 and 22 27 voltage magnitudes ...

Page 605: ...lse RB8 Pulse RB7 Pulse RB8 Pulse RB7 20 Pulse CC Pulse OC Pulse CC Pulse OC Pulse CC Pulse OC This function is only available in extended mode DNPE It functions as Do Nothing in standard mode DNP The Status field is used exactly as defined All other fields are ignored A pulse operation asserts a point for a single processing interval Caution should be exercised with multiple remote bit pulses in ...

Page 606: ...ill be collected in reverse chronological order unless binary input point 1025 is set which the master can use to identify when a newer relay event summary is available In extended mode DNPE DNP events are generated whenever the values in points 105 113 change Events are detected every second by the scanning process The master can collect relay event summaries using event data rather than the stat...

Page 607: ...er enter indices for the corresponding list where a parameter of A specifies the Analog list and B specifies the Binary list The relay accepts lines of indices until a line without a final continuation character is entered Each line of input is constrained to 80 characters but all the points may be re mapped using multiple lines with continuation characters at the end of the intermediate lines If ...

Page 608: ... seconds 0 0 30 0 STIMEO Number of data link retries 0 for no confirm 1 15 DRETRY Data Link Time out interval seconds 0 5 DTIMEO Minimum Delay from DCD to transmission seconds 0 00 1 00 MINDLY Maximum Delay from DCD to transmission seconds 0 00 1 00 MAXDLY Transmission delay from RTS assertion seconds OFF 0 00 30 00 PREDLY Post transmit RTS deassertion delay seconds 0 00 30 00 PSTDLY Analog report...

Page 609: ...rval seconds 0 0 30 0 STIMEO Number of data link retries 0 for no confirm 1 15 DRETRY Data Link Time out interval seconds 0 5 DTIMEO Minimum Delay from DCD to transmission seconds 0 00 1 00 MINDLY Maximum Delay from DCD to transmission seconds 0 00 1 00 MAXDLY Transmission delay from RTS assertion seconds OFF 0 00 30 00 PREDLY Post transmit RTS deassertion delay seconds 0 00 30 00 PSTDLY Amps repo...

Page 610: ......

Page 611: ...Message Transmission All messages are transmitted without idle bits between characters Idle bits are allowed between messages At 4800 baud one message is transmitted each 1 2 power system cycle At 9600 baud one message is transmitted each 1 4 power system cycle At 19200 and 38400 baud one message is transmitted each 1 8 power system cycle for the SEL 321 and 1 4 power system cycle for the SEL 351 ...

Page 612: ...ample a security counter set to two on the SEL 351R will delay a bit by 1 4 cycle because the SEL 351R is receiving new MIRRORED BITS messages each 1 8 cycle from the SEL 321 Synchronization When a node detects a communications error it deasserts ROKx If a node detects two consecutive communications errors it transmits an attention message which includes its TX_ID setting When a node receives an a...

Page 613: ... will assert a user accessible flag hereafter called RBADx Note The user typically will combine RBADx with other alarm conditions using SELOGIC control equations When channel unavailability exceeds a user settable threshold the relay will assert a user accessible flag hereafter called CBADx Note The user typically will combine CBADx with other alarm conditions using SELOGIC control equations MIRRO...

Page 614: ...ycle 1 message per 1 2 cycle enable hardware handshaking Y N MBT RTS_CTS N Use the MBT option if you are using a Pulsar MBT 9600 baud modem With this option set the relay will transmit a message every 1 2 power system cycle and the relay will deassert the RTS signal on the EIA 232 connector Also the relay will monitor the CTS signal on the EIA 232 connector which the modem will deassert if the cha...

Page 615: ... 1 Mirrored Bits RMB_ Debounce DO time 1 8 msgs RMB1DO 1 Mirrored Bits RMB_ Debounce PU time 1 8 msgs RMB2PU 1 Mirrored Bits RMB_ Debounce DO time 1 8 msgs RMB2DO 1 Mirrored Bits RMB_ Debounce PU time 1 8 msgs RMB3PU 1 Mirrored Bits RMB_ Debounce DO time 1 8 msgs RMB3DO 1 Mirrored Bits RMB_ Debounce PU time 1 8 msgs RMB4PU 1 Mirrored Bits RMB_ Debounce DO time 1 8 msgs RMB4DO 1 Mirrored Bits RMB_ ...

Page 616: ......

Page 617: ...p A or B COM p n Show a communications summary for latest n event on MIRRORED BITS channel p COM p m n Show a communications summary report for events n through m on MIRRORED BITS channel p COM p d1 Show a communications summary report for events occurring on date d1 on MIRRORED BITS channel p COM p n Show a communications summary for events occurring between dates d1 and d2 on MIRRORED BITS chann...

Page 618: ...m date d1 to d2 Entry of dates is dependent on the Date Format setting DATE_F MDY or YMD SHO n Show regular settings for settings group n n 1 6 SHO EZ n Show EZ recloser control settings for settings group n n 1 6 SHO FZ Show EZ global settings SHO G Show global settings SHO L n Show SELOGIC control equation settings for settings group n n 1 6 SHO P n Show port settings for port n n 1 2 3 F SHO R ...

Page 619: ... 1 Access Level E and Access Level B commands are available from Access Level 2 The screen prompt is CON n Control Relay Word bit RBn Remote Bit n where n 1 8 n 1 16 in the SEL 351R 2 Execute CON n and the control responds CONTROL RBn Then reply with one of the following SRB n set Remote Bit n assert RBn CRB n clear Remote Bit n deassert RBn PRB n pulse Remote Bit n assert RBn for 1 4 cycle COP m ...

Page 620: ...ntrl X Send CANCEL command to abort current command and return to current access level prompt Key Stroke Commands When Using SET Command ENTER Retains setting and moves on to next setting ENTER Returns to previous setting ENTER Returns to previous setting section ENTER Skips to next setting section END ENTER Exits setting editing session then prompts user to save settings Ctrl X Aborts setting edi...

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