Schweitzer Engineering SEL-387-0 Instruction Manual Download Page 121

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3.71

Date Code 20170601

Instruction Manual

SEL-387-0, -5, -6 Relay

Differential, Restricted Earth Fault, Thermal, and Overcurrent Elements

Time-Overcurrent Curves

Figure 3.32

U.S. Short-Time Inverse Curve: U5

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Multiples of Pickup

Time in Cycles 60 Hz (50Hz)

3 (2.5)

6 (5)

15 (12.5)

60 (50)

30 (25)

150 (125)

300 (250)

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Summary of Contents for SEL-387-0

Page 1: ...20170601 SEL 387 0 5 6 Relay Current Differential Overcurrent Relay Data Recorder Instruction Manual PM387 01 NB ...

Page 2: ...n patents Schweitzer Engineering Laboratories Inc reserves all rights and benefits afforded under federal and international copyright and patent laws in its products including without limitation software firmware and documentation The information in this document is provided for informational use only and is subject to change without notice Schweitzer Engineering Laboratories Inc has approved only...

Page 3: ...ent 3 1 Restricted Earth Fault Element 3 25 Temperature Measurement SEL 387 5 and SEL 387 6 Relays 3 31 Thermal Element SEL 387 6 Relay 3 32 Overcurrent Element 3 48 Time Overcurrent Curves 3 66 Section 4 Control Logic Overview 4 1 Optoisolated Inputs 4 2 Local Control Switches All But SEL 387 0 Relay 4 2 Remote Control Switches 4 3 Multiple Setting Groups 4 4 SELOGIC Control Equation Sets 1 3 Var...

Page 4: ...ration 8 1 Pushbuttons 8 3 Programmable LEDA LEDB LEDC 8 16 Rotating Default Display 8 17 Figures of Selected Front Panel Menu Structures 8 25 Section 9 Event Reports and SER Overview 9 1 Standard 15 30 or 60 Cycle Event Reports 9 2 Sequential Events Recorder SER Event Report 9 19 Section 10 Testing and Troubleshooting Overview 10 1 Testing Methods and Tools 10 1 Acceptance Testing 10 3 Commission...

Page 5: ...3 SEL 387 6 Relay E 8 Appendix F Unsolicited SER Protocol Overview F 1 Recommended Message Usage F 1 Functions and Function Codes F 2 Appendix G Distributed Network Protocol Overview G 1 Configuration G 1 Data Link Operation G 3 Data Access Method G 3 DNP3 Documentation G 4 Point Remapping G 16 SEL 387 5 6 Relay DNP Port SET P Settings Sheets Appendix H Protection Application Examples Overview H 1...

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Page 7: ... 1 Serial Port SET Commands 6 1 Table 6 2 SET Command Editing Keystrokes 6 2 Table 7 1 Serial Port Pin Definitions 7 2 Table 7 2 SEL 387 Communication Cable Numbers 7 3 Table 7 3 Serial Communications Port Pin Function Definitions 7 6 Table 7 4 MET Command Choices 7 21 Table 7 5 Valid Password Characters 7 23 Table 7 6 Editing Keys for SET Commands 7 26 Table 7 7 Settings for Each Communication Po...

Page 8: ... Configuration Block D 9 Table D 9 A5E0 Fast Operate Remote Bit Control D 11 Table D 10 A5E3 Fast Operate Breaker Control D 11 Table D 11 A5CD Fast Operate Reset Definition Block D 11 Table D 12 A5ED Fast Operate Reset Command D 12 Table D 13 A546 Temperature Data Block SEL 387 5 and SEL 387 6 D 12 Table E 1 SEL 387 Compressed ASCII Commands E 1 Table G 1 Data Needed to Configure a Port for DNP G ...

Page 9: ...igure 3 5 Differential Element Decision Logic 3 5 Figure 3 6 Differential Element Harmonic Blocking Logic 3 7 Figure 3 7 Differential Element 87BL1 Blocking Logic SEL 387 0 3 8 Figure 3 8 Differential Element 87BL1 Blocking Logic All But SEL 387 0 3 8 Figure 3 9 DC Blocking DCBL1 Logic All But SEL 387 0 3 9 Figure 3 10 Primary Currents and Secondary Currents as Measured by the Relay 3 21 Figure 3 ...

Page 10: ...5 Figure 8 6 EVENTS Display Structure 8 26 Figure 8 7 OTHER BKR Menu and Display Structure 8 27 Figure 8 8 SET Menu and Display Structure 8 28 Figure 9 1 Example Event Summary 9 4 Figure 9 2 Example Winding Event Report 9 6 Figure 9 3 Example Digital Event Report 9 8 Figure 9 4 Example Differential Event Report 9 11 Figure 9 5 Example Raw Winding Event Report 9 15 Figure 9 6 Derivation of Event Re...

Page 11: ...Figure H 14 Current Flow With Reversed X Side CT Polarity and Reversed Connections H 11 Figure H 15 Results of Reversed X Side CT Polarity and Reversed Connections H 11 Figure H 16 Delta Wye Transformer With Standard Phase to Bushing Connections H 13 Figure H 17 Primary Currents and Secondary Currents as Measured by the Relay H 13 Figure H 18 Delta Wye Transformer With Non Standard Phase to Bushin...

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Page 13: ...ting the relay for such functions as control obtaining target information and obtaining metering information Section 8 Front Panel Interface Describes use of the front panel to perform the actions of serial port commands Section 5 Metering and Monitoring Explains how to retrieve such operations data as metering results dc battery status breaker wear through fault event data and relay status Sectio...

Page 14: ... Summary Summarizes the serial port commands fully described in Section 7 Safety Information Dangers Warnings and Cautions This manual uses three kinds of hazard statements defined as follows Safety Symbols The following symbols are often marked on SEL products DANGER Indicates an imminently hazardous situation that if not avoided will result in death or serious injury WARNING Indicates a potentia...

Page 15: ...nt travailler sur cet appareil Si vous n êtes pas qualifiés pour ce travail vous pourriez vous blesser avec d autres personnes ou endommager l équipement WARNING This device is shipped with default passwords Default passwords should be changed to private passwords at installation Failure to change each default password to a private password may allow unauthorized access SEL shall not be responsibl...

Page 16: ...gs values included in these examples may not necessarily match those in the current version of your SEL 387 Example Description STATUS Commands typed at a command line interface on a PC Enter Single keystroke on a PC keyboard Ctrl D Multiple combination keystroke on a PC keyboard Start Settings PC software dialog boxes and menu selections The character indicates submenus CLOSE Relay front panel pu...

Page 17: ... settings permit you to use wye or delta connected current transformers with virtually any type of transformer winding connection The SEL 387 Differential Relay provides three differential elements with dual slope characteristics The second slope provides security against CT saturation for heavy through faults Be sure to conduct detailed analysis of CT performance under worst case saturation condi...

Page 18: ...d SEL 387 6 Relay These relays also provide security against conditions that may cause relay misoperation resulting from both system and transformer events Use the fifth harmonic element to prevent relay misoperation during allowable overexcitation conditions Even harmonic elements second and fourth 3 51 P G 3 3 Combined 67G 1 3 Autotransformer 87 50 P G Q 51 P G Q Overcurrent Phase Ground Neg Seq...

Page 19: ...re used for the neutral CT only three of the winding inputs may be used for normal differential or overcurrent protection purposes Thermal Protection SEL 387 6 Relay The SEL 387 6 provides a thermal element based on advanced transformer models This thermal element calculates the operating temperature and insulation aging of mineral oil immersed power transformers being protected by the SEL 387 6 T...

Page 20: ...performs a simple I2t calculation and cumulatively stores calculation results for each phase Use these through fault event data to schedule proactive maintenance for transformers and to help justify possible system enhancements to mitigate through faults Programmable Optoisolated Inputs and Output Contacts The SEL 387 is equipped with enhanced SELOGIC control equations that allow you to design a c...

Page 21: ...mer and Low Voltage Bus Protection Figure 1 4 Bus and Feeder Protection 3 3 3 3 52 4 52 5 52 3 52 1 52 2 87 50 P G Q 51 P G Q 50 P G Q 51 P G Q 50 P G Q 51 P G Q 50 P G Q 51 P G Q 51 P G Combined CT1 CT2B CT2A CT3 CT4 CT5 Low Voltage Bus 3 3 3 3 52 52 52 87 50 P G Q 51 P G Q 50 P G Q 51 P G Q 50 P G Q 51 P G Q 50 P G Q 51 P G Q 52 ...

Page 22: ...tion Manual Date Code 20170601 Introduction and Specifications Application Ideas Figure 1 5 Unit Differential Protection 3 3 3 3 52 52 87 50 P G Q 51 P G Q 50 P G Q 51 P G Q 50 P G Q 51 P G Q 50 P G Q 51 P G Q SEL 300G0 SEL 300G1 52 ...

Page 23: ...nal Blocks This model includes hardware that supports 12 current inputs 6 optoisolated inputs 7 programmable output contacts 1 alarm contact 3 EIA 232 ports 1 EIA 485 port and IRIG B time code It uses terminal blocks that support 6 ring terminals This robust package meets or exceeds numerous industry standard type tests This relay is available in a 3 50 2U or 5 25 3U rack mount package or 4 9 or 6...

Page 24: ...t Interrupting Option Make 30 A Carry 6 A continuous carry at 70 C 4 A continuous carry at 85 C 1 s Rating 50 A MOV Protection 330 Vdc 130 J Pickup Time 5 ms Dropout Time 8 ms typical Breaking Capacity 10 000 Operations 24 V 10 A L R 40 ms 48 V 10 A L R 40 ms 125 V 10 A L R 40 ms 250 V 10 A L R 20 ms Cyclic Capacity 4 Cycles in 1 Second Followed by 2 Minutes Idle for Thermal Dissipation 24 V 10 A ...

Page 25: ...tputs 3100 Vdc on power supply 2200 Vdc on EIA 485 communications port Impulse IEC 60255 5 1977 0 5 J 5000 V Electrostatic Discharge Test ESD IEC 60255 22 2 1996 IEC 61000 4 2 1995 Level 4 RFI and Interference Tests 1 MHz Burst Disturbance IEC 60255 22 1 1988 Class 3 Fast Transient Disturbance IEC 60255 22 4 1992 IEC 61000 4 4 1995 Level 4 Radiated EMI IEC 60255 22 3 1989 ENV 50140 1993 IEEE C37 9...

Page 26: ... Time Delay Range 0 16000 cycles Time Delay Accuracy 0 1 0 25 cycle Winding and Combined Current Time Overcurrent Elements Pickup Ranges A secondary 5 A Model 0 5 16 0 A 1 A Model 0 1 3 2 A Pickup Accuracies A secondary 5 A Model Steady State 3 0 10 A Transient 5 0 10 A 1 A Model Steady State 3 0 02 A Transient 5 0 02 A Note For transient 6 for negative sequence elements Curve U1 U S Moderately In...

Page 27: ...r mounting rack and provide additional space at the rear of the relay for applications where the relay might otherwise be too deep to fit Panel Mount We also offer the SEL 387 in a panel mount version for a clean look Panel mount relays have sculpted front panel molding that covers all installation holes See Figure 2 1 Cut your panel and drill mounting holes according to the dimensions in Figure 2...

Page 28: ...2 2 SEL 387 0 5 6 Relay Instruction Manual Date Code 20170601 Installation Relay Mounting Dimensions and Cutout Figure 2 1 Relay Dimensions for Rack Mount and Panel Mount Models ...

Page 29: ...2 3 Date Code 20170601 Instruction Manual SEL 387 0 5 6 Relay Installation Relay Mounting Figure 2 2 Front Panel Drawings Models 0387x0xxxH and 0387x1xxxH ...

Page 30: ...2 4 SEL 387 0 5 6 Relay Instruction Manual Date Code 20170601 Installation Relay Mounting Figure 2 3 Front Panel Drawings Models 0387x0xxx3 and 0387x1xxx3 ...

Page 31: ...rovides maximum wiring flexibility for inputs and outputs and a quick disconnect voltage rated connector for voltage inputs The manufacturers of these connectors have tested them thoroughly and many industry applications have proven the performance of these connectors In addition we have tested these connectors thoroughly to ensure that they conform to our standards for protective relay applicatio...

Page 32: ...2 6 SEL 387 0 5 6 Relay Instruction Manual Date Code 20170601 Installation Rear Panel Connections Figure 2 4 Rear Panel Drawings Models 0387x0xxxxX and 0387x1xxxx2 ...

Page 33: ...2 7 Date Code 20170601 Instruction Manual SEL 387 0 5 6 Relay Installation Rear Panel Connections Figure 2 5 Rear Panel Drawings Models 0387x1xxxx4 and 0387x1xxxx6 ...

Page 34: ...2 8 SEL 387 0 5 6 Relay Instruction Manual Date Code 20170601 Installation Rear Panel Connections Figure 2 6 Rear Panel Drawings Models 0387xYxxxx6 and 0387xYxxxx2 ...

Page 35: ...T 2 4 six position female plug in connectors for interface board output contacts OUT201 through OUT203 OUT204 through OUT206 OUT207 through OUT209 and OUT210 through OUT212 2 eight position female plug in connectors for interface board optoisolated inputs IN201 through IN204 and IN205 through IN208 Connections Frame Ground For safety and performance ground the relay chassis at terminal GND Z27 Con...

Page 36: ... polarity dependent the left side of Figure 2 7 shows these contacts as they would appear on a terminal block version Figure 2 7 Standard Independent Output Contact Representation Connect output wiring to any of the additional output contacts OUT201 OUT212 you need for your application On the additional interface board you have the option of either standard or high current interrupting contacts Hi...

Page 37: ... specify the length needed For connecting devices at more than 100 feet fiber optic transceivers are available The SEL 2800 family of transceivers provides fiber optic links between devices for electrical isolation and long distance signal transmission Call the factory for further information on these products Clock Synchronization IRIG B Refer to Table 2 1 for a list of cables that you can purcha...

Page 38: ...is transformer has a neutral current CT connected to one of the three unused Winding 4 current inputs The Restricted Earth Fault REF protection function uses measured neutral current in conjunction with the residual current calculated from the Winding 1 CTs You can use the REF function only if CTs for the protected wye winding are themselves wye connected Delta connected CTs remove the zero sequen...

Page 39: ... circuit board jumpers or replace the clock battery How to replace the circuit boards in the relay Accessing the Relay Circuit Boards Step 1 De energize the relay by removing the connections to rear panel terminals Z25 and Z26 Accomplish this easily on Connectorized relays by removing the connector at rear panel terminals Z25 and Z26 Step 2 Remove any cables connected to serial ports on the front ...

Page 40: ...nected to serial ports Step 10 Re energize the relay by reconnecting wiring to rear panel terminals Z25 and Z26 On Connectorized versions replace the power connector at rear panel terminals Z25 and Z26 Main Board Output Contact Jumpers Refer to Figure 2 10 to see the layout of the main board and locate the solder jumpers to the rear of the output contacts Select the contact type for the output con...

Page 41: ...r in place to disable serial port and front panel password protection With the jumper removed password security is enabled View or set the passwords with the PASSWORD command see Section 7 Serial Port Communications and Commands Put breaker jumper JMP6B in place to enable the serial port commands OPEN CLOSE and PULSE The relay ignores these commands while you remove JMP6B Use these commands primar...

Page 42: ... applications in North America use an external fuse rated 3 A or less in line with the 5 Vdc source on pin 1 SEL fiber optic transceivers include a fuse that meets this requirement Other Jumpers Additional main board jumpers JMP5A through JMP5D located near JMP6 are not functional in the SEL 387 Originally they were installed for developmental testing purposes but are not used in the production ve...

Page 43: ...andard output contacts and 16 optoisolated inputs Interface Board 6 has 12 hybrid high current interrupting output contacts and 8 optoisolated inputs These latter contacts can interrupt as much as 10 A of dc current as indicated in General on page 1 8 Jumpers As on the main board the output contacts of Interface Boards 2 and 6 have solder jumpers for configuring the output as either a form A norma...

Page 44: ...2 18 SEL 387 0 5 6 Relay Instruction Manual Date Code 20170601 Installation Circuit Board Configuration Figure 2 10 Main Board Jumpers Connections and Battery Locations ...

Page 45: ...2 19 Date Code 20170601 Instruction Manual SEL 387 0 5 6 Relay Installation Circuit Board Configuration Figure 2 11 Interface Board 2 Component Layout Conventional Terminal Block ...

Page 46: ...2 20 SEL 387 0 5 6 Relay Instruction Manual Date Code 20170601 Installation Circuit Board Configuration Figure 2 12 Interface Board 4 Component Layout Conventional Terminal Block ...

Page 47: ...2 21 Date Code 20170601 Instruction Manual SEL 387 0 5 6 Relay Installation Circuit Board Configuration Figure 2 13 Interface Board 6 Component Layout Conventional Terminal Block ...

Page 48: ...2 22 SEL 387 0 5 6 Relay Instruction Manual Date Code 20170601 Installation Circuit Board Configuration Figure 2 14 Interface Board 2 Component Layout Connectorized ...

Page 49: ...2 23 Date Code 20170601 Instruction Manual SEL 387 0 5 6 Relay Installation Circuit Board Configuration Figure 2 15 Interface Board 6 Component Layout Connectorized ...

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Page 51: ...straint to secure relay stability during transformer inrush conditions Even numbered harmonics second and fourth augmented by dc blocking provide security during energization while fifth harmonic blocking provides security for overexcitation conditions Operating Characteristic The SEL 387 has three differential elements 87R 1 87R 2 and 87R 3 These elements employ Operate IOP and Restraint IRT quan...

Page 52: ...to the per unit value common to all four windings whereas TAPn refers to the ampere value of a particular winding s TAPmin and TAPmax refer to the least and greatest of the four TAPn values This method ensures that for full load through current conditions all incoming current multiples of TAP sum to 1 0 and all outgoing current multiples of TAP sum to 1 0 with a reference direction into the transf...

Page 53: ...87R 3 the quantities are summed as phasors and the magnitude becomes the Operate quantity IOPn For a through current condition IOPn should calculate to about 1 1 0 at rated load Calculation of the Restraint quantity IRTn occurs through a summation of all current magnitudes and then division by two For a through current condition this will calculate to about 1 1 2 2 2 1 at rated load Figure 3 3 Dif...

Page 54: ... windings while maintaining security for inrush and through fault conditions Operating current elements 87On 87O1 87O2 87O3 are provided for testing purposes Restrained elements 87R1 87R2 and 87R3 determine whether the IOP quantity is greater than the restraint quantity using the differential characteristic shown in Figure 3 1 Set HRSTR Y harmonic restraint all but SEL 387 0 to modify this charact...

Page 55: ...endent harmonic restraint This feature automatically applies harmonic restraint to each phase independently The harmonic blocking setting IHBL is not used It also disables second and fourth harmonic blocking since it adds the second and fourth harmonic quantities IHRTn to the differential characteristic restraint quantity see Figure 3 4 and Figure 3 5 Blocking features are discussed in more detail...

Page 56: ...tent Use the default values for these settings to provide secure differential element operation for inrush conditions Blocking While the restrained differential elements are making decisions a parallel blocking decision process occurs regarding the magnitudes of specific harmonics in the IOP quantities Common Cross or Independent Blocking Use common or independent blocking elements 87BL1 87BL2 and...

Page 57: ...ich drives contact OUT104 OUT104 connects to an 86 lockout device which trips all breakers via multiple sets of contacts Harmonic Blocking Figure 3 7 SEL 387 0 and Figure 3 8 all but SEL 387 0 show how the 87BL1 blocking element will pick up if the second fourth or fifth harmonic operating current as a percentage of fundamental operating current is above the PCT2 PCT4 or PCT5 setting threshold res...

Page 58: ...igure 3 8 DCBL is available as a Relay Word bit but elements DCBL1 DBL2 and DCBL3 are not The dc ratio blocking feature applies to inrush cases with little harmonic content but a high dc offset The measurement principle is that of wave shape recognition distinguishing between the time constants for inrush current that typically are longer than the time constants for an internal fault _ I1HB2 I1HB5...

Page 59: ...ing Y1 makes the fourth harmonic PCT4 dc ratio blocking DCRB and harmonic restraint HRSTR settings available on all enabled Y or Y1 windings This is the only difference between Y and Y1 selection CT Connection W1CT W4CT Range D Y To perform calculations for TAPn values the relay uses information on whether the CTs are connected in delta D or wye Y for each winding If the CTs are connected in delta...

Page 60: ...he secondary currents for the differential calculation Connection Compensation W1CTC W4CTC Range 0 1 12 These settings define the amount of compensation the relay applies to each set of winding currents to properly account for phase shifts in transformer winding connections and CT connections For example this correction is needed if both wye and delta power transformer windings are present but all...

Page 61: ...very heavy current levels that clearly indicate an internal fault Set the pickup level U87P to about 10 times tap The unrestrained differential element only responds to the fundamental frequency component of the differential operating current It is unaffected by the SLP1 SLP2 IRS1 PCT2 PCT5 or IHBL settings Thus you must set the element pickup level high enough so as not to react to large inrush c...

Page 62: ...t the relay to block the percentage restrained differential element if the ratio of fourth harmonic current to fundamental current IF4 IF1 is greater than the PCT4 setting When using harmonic restraint HRSTR Y use the PCT4 setting to scale the amount of fourth harmonic content that will be added to the restraint slope characteristic The larger the PCT4 setting the smaller the increase on the restr...

Page 63: ...tion Choose between harmonic blocking and harmonic restraint Harmonic blocking treats the second and fourth harmonics independently and blocks the relay when the second or fourth harmonic content harmonic current as a percentage of the fundamental current exceeds the PCT2 or PCT4 setting respectively For example assume the following PCT2 PCT4 20 percent and the harmonics in the differential curren...

Page 64: ...gnitude of any one phase is greater than the blocking threshold Common Harmonic Blocking is more secure but may slightly delay percentage differential element operation because harmonics in all three phases must drop below the thresholds for the three phases Setting Calculation Connection Compensation Settings The relay offers connection compensation settings WnCTC n 1 2 3 or 4 to compensate for t...

Page 65: ...tion Matrices Amount and Direction of Correction ABC Phase Rotation ACB Phase Rotation 0 CTC 0 0 0 1 CTC 1 30 CCW 30 CW 2 CTC 2 60 CCW 60 CW 3 CTC 3 90 CCW 90 CW 4 CTC 4 120 CCW 120 CW 5 CTC 5 150 CCW 150 CW 6 CTC 6 180 CCW 180 CW 7 CTC 7 210 CCW 210 CW 8 CTC 8 240 CCW 240 CW 1 0 0 0 1 0 0 0 1 1 3 1 1 0 0 1 1 1 0 1 1 3 1 2 1 1 1 2 2 1 1 1 3 0 1 1 1 0 1 1 1 0 1 3 1 1 2 2 1 1 1 2 1 1 3 1 0 1 1 1 0 0...

Page 66: ...rately determine this phase shift Transformer winding connection diagram transformer nameplate Three line connection diagram showing 1 system phase to transformer bushing connections 2 current transformer CT connections and 3 CT to relay connections Step 2 Choose one of the relay current inputs as the reference winding If a delta winding exists and is wired into the relay choose it as the referenc...

Page 67: ...ding n denotes the winding number Equation 3 3 The relay calculates TAPn with the following limitations The tap settings are within the range 0 1 IN and 31 IN The ratio TAPMAX TAPMIN 7 5 Restrained Element Operating Current Pickup The O87P setting range is 0 1 to 1 0 we suggest an O87P setting of 0 3 The setting must be at a minimum for increased sensitivity but high enough to avoid operation beca...

Page 68: ...in the region where CT error is small and increases security in the high current region where CT error is great We must define both slopes as well as the slope 1 limit or crossover point IRS1 If we assume CT error to be only 1 percent we can set SLP1 at about 25 percent A good choice for IRS1 is about 3 0 per unit of tap while the SLP2 setting should probably be in the 50 percent to 60 percent ran...

Page 69: ...cates that the rated transformer excitation current is exceeded At full load a TH5P setting of 0 1 corresponds to 10 percent of the fundamental current A delay TH5D that can be set by the user prevents the relay from indicating transient presence of fifth harmonic currents You may consider triggering an event report if transformer excitation current exceeds the fifth harmonic threshold There are t...

Page 70: ...gs 1 2 and 3 leaving Winding 4 available for stand alone overcurrent duty Step 2 Select settings for the current transformer connection and ratio for each winding All CTs connect in wye The ratios are equal to primary current divided by secondary current The settings are as follows Step 3 Set the transformer maximum rating We use this rating for all windings in the later tap calculation MVA 100 St...

Page 71: ...o be 180 degrees out of phase with IAW3 Therefore set W1CTC 11 and W2CTC 11 The resulting compensation settings are ICOM Y choose to define the CT compensation W1CTC 11 W2CTC 11 W3CTC 0 The relay multiplies the wye CT currents from the wye transformer windings by the CTC 11 matrix to give the same results as the physical DAC CT connection Step 5 Enter winding line to line voltages The relay needs ...

Page 72: ... The settings are as follows O87P 0 3 Operate current pickup in multiple of tap SLP1 25 25 percent initial slope SLP2 50 50 percent second slope IRS1 3 0 limit of slope 1 Restraint current in multiple of tap U87P 10 unrestrained differential Operate current level multiple of tap CT2 15 block operation if second harmonic is above 15 percent PCT4 15 block operation if fourth harmonic is above 15 per...

Page 73: ...m As a rule of thumb CT performance will be satisfactory if the CT secondary maximum symmetrical external fault current multiplied by the total secondary burden in ohms is less than half of the C voltage rating of the CT The following CT selection procedure uses this second guideline CT Ratio Selection for a Multiwinding Transformer Step 1 Determine the secondary side burdens in ohms for all curre...

Page 74: ...he maximum symmetrical fault current for an external fault and verify that the CT secondary currents do not exceed your utility standard maximum allowed CT current typically 20 IN If necessary reselect the CT ratios and repeat Step 2 through Step 6 Step 7 For each CT multiply the burdens calculated in Step 1 by the magnitude in secondary amperes of the expected maximum symmetrical fault current fo...

Page 75: ...n a transformer or to an entire autotransformer winding with as many as three sets of line end CT inputs The neutral CT connects to one of the three current inputs for Winding 4 IAW4 IBW4 or ICW4 leaving only three three phase winding inputs for normal differential or overcurrent protection purposes Figure 3 11 shows the REF simplified enable block logic The upper logic group determines whether to...

Page 76: ... AND gate at left center in Figure 3 12 asserts This will occur if the two Relay Word bits 32IE and 50GC assert _ _ _ _ _ _ 50GP 32IOP 1 12 123 32IOP 2 12 123 23 32IOP 3 123 23 IRW4 _ 50G4 Relay Word bit CTR1 CTR4 CTR2 CTR4 CTR3 CTR4 IRW1 IRW2 IRW3 32IOP 1 12 123 32IOP 2 12 123 23 32IOP 3 123 23 32IE CTS E32I SELOGIC control equation _ 50GC Relay Word Bits 50GP 0 8 a0 I1W1 a0 I1W2 a0 I1W3 I0W2 I0W...

Page 77: ...ty for very small currents or for an angle very near 90 or 90 degrees If the 32I output exceeds the threshold test it then must persist for at least 1 5 cycles before the Relay Word bit 32IF forward or 32IR reverse asserts Assertion of 32IF constitutes a decision to trip by the REF function A second path can also assert the 32IF bit This path comes from the two position AND gate at the top right o...

Page 78: ... 0 50 in 0 01 steps For the relay to enable REF the zero sequence current at Winding n must be greater than a0 times the positive sequence current at that input or I0Wn a0 I1Wn This supervision provides security against false I0 that can occur because of CT saturation during heavy three phase faults Residual Current Sensitivity Threshold 50GP Range 1 A 0 05 3 A in 0 01 A steps 5 A 0 25 15 00 A in ...

Page 79: ... input connected to the Winding 4 input of the relay as it must be for every case where REF protection is to be used If you want to protect an autotransformer set 32IOP at 12 and connect the primary and secondary side CTs to relay winding inputs 1 and 2 You could also use this setting for the single winding mentioned above if that winding had two breakers and two sets of CTs at the line end You wo...

Page 80: ... three ABC inputs e g IBW4 so the residual current for input 4 would be IRW4 0 IBW4 0 IBW4 Residual Current Sensitivity Threshold The second criterion of 50GP relates to the relative sensitivity of the winding CTs compared to the neutral CT Use the following equation to determine the minimum second criterion for 50GP Equation 3 11 where CTR4 is the neutral CT ratio and CTRmax is the greatest CT ra...

Page 81: ...A RTD Modules total of 24 RTD inputs Configure the SEL 387 and SEL 2600A communication with the port setting SET P n n 1 2 3 or 4 Temperature Preference TMPREFA TMPREFB Range C F Located under the Global settings TMPREFA TMPREFB select the preferred temperature units C for Celsius or F for Fahrenheit The relay automatically recalculates all 49 element temperature values The SEL 387 can report a di...

Page 82: ...ent based on IEEE Standard C57 91 1995 IEEE Guide for Loading Mineral Oil Immersed Power Transformers Use this element to activate a control action or issue a warning or alarm when your transformer overheats or is in danger of excessive insulation aging or loss of life Capture current hourly or daily data about your transformer using the thermal event report The data acquisition interval is one mi...

Page 83: ... element calculates hot spot temperature Figure 3 16 A When the relay receives a measured ambient temperature but not a measured top oil temperature the thermal element calculates the top oil temperature and hot spot temperature Figure 3 16 B In the absence of any measured ambient or top oil temperatures the thermal element uses a default ambient temperature setting DTMP that you select and calcul...

Page 84: ...culates the winding hot spot temperature at the end of the interval according to the following expression Equation 3 14 The relay calculates winding hot spot rise over top oil temperature H according to the following Equation 3 15 A C ΔΘH ΔΘH ΔΘTO C ΘH ΘH ΘH ΘH Calculated hot spot temperature using ΔΘH ΘTO Measured top oil temperature ΘH Calculated hot spot temperature using ΔΘH and ΔΘTO ΘTO Calcu...

Page 85: ...ure TO according to the following Equation 3 18 The relay calculates top oil rise over ambient temperature according to the following Equation 3 19 The relay calculates the ultimate top oil rise over ambient temperature TO U according to the following expression where K load expressed in per unit of transformer nameplate rating according to the cooling system in service phase current divided by th...

Page 86: ...ient temperature setting DTMP for the thermal element calculation of top oil temperature as follows Equation 3 24 Top Oil Temperature Comparison to Indicate Cooling System Efficiency With measured top oil temperatures available top oil temperatures are also calculated using measured currents and the two results compared If the measured top oil temperature exceeds the calculated top oil temperature...

Page 87: ...tting to 0 Insulation Loss of Life Insulation Aging Acceleration Factor The relay thermal element uses the hot spot temperature to calculate an insulation aging acceleration factor FAA which indicates how fast the transformer insulation is aging The relay calculates the insulation aging acceleration factor FAA for each time interval t as follows Equation 3 25 Daily Rate of Loss of Life The relay c...

Page 88: ...he relay estimates the total accumulated loss of insulation life in percentage of normal insulation life by summing all of the daily RLOL values Equation 3 30 The relay stores the TLOL value at midnight each day You can use the THE P command to load an initial value of TLOL into the relay where FEQA equivalent insulation aging factor for a total time period n index of the time interval t N total n...

Page 89: ... currents added together or Windings 3 and 4 to be the current for the thermal element calculations Refer to the two configuration settings E87W and EOC to determine which of the four windings are in use For a two winding power transformer current transformers located on either the high voltage or low voltage side would provide the correct current values You can apply the thermal element on a thre...

Page 90: ...puts may vary between phases because the phase currents may be different With TRTYPE D the relay selects the highest magnitude phase current and sets the other two phase currents to that value to force a balanced condition In this case the thermal element outputs for three single phase transformers will be the same assuming that each is operating at the same cooling stage and the thermal constants...

Page 91: ... power transformer connected to optoisolated inputs on the SEL 387 with the CsxyS SELOGIC control equations set to the corresponding digital input Default Ambient Temperature DTMP Range 40 to 85 C in 1 C steps Select a reasonable value for DTMP even if your data acquisition system provides measurement of the ambient temperature near the power transformer In this case the thermal element calculatio...

Page 92: ...and Earlier Range AMB OIL1 OIL2 OIL3 This setting determines how the SEL 387 uses the thermal inputs it receives The choices are AMB ambient temperature OIL1 top oil temperature 1 OIL2 top oil temperature 2 and OIL3 top oil temperature 3 If NTHM is set to 0 the relay assumes that it is not receiving any temperature inputs and will use only currents for its calculations The COMFLG bit is cleared wh...

Page 93: ...re inputs are available the relay compares the TOT1 and TOT2 settings against the measured value Should the measured value not be available communication failure or lack of instrumentation the relay compares the TOT1 and TOT2 settings against the calculated top oil value With XTYPE 1 and top oil temperatures being measured or calculated for each of the three single phase transformers the TOT1 or T...

Page 94: ...ily rate of loss of life being calculated for each of the three single phase transformers the RLL bit asserts when any of the three values exceeds the limit The thermal report will show which transformer exceeded the limit Total Loss of Life Limit TLOLL Range 0 99 in 0 01 steps One of the outputs the thermal element provides is total loss of life which is an estimate of the accumulated loss of tra...

Page 95: ...ot Spot Thermal Time Constant Thsx Range 0 01 2 00 hours in 0 01 hour steps IEEE C57 91 1995 section 7 2 6 states that the winding time constant H Ths is the time it takes the winding temperature rise over oil temperature rise to reach 63 2 percent of the difference between final rise and initial rise during a load change The winding time constant may be estimated from the resistance cooling curve...

Page 96: ...E C57 92 1981 Tables 2 and 4 If specific values for a particular transformer are known you can enter values from within a range of 0 to 100 C Hot Spot Conductor Rise Over Top Oil Temperature THgrxy Range 0 01 to 100 C in 0 1 C steps Hot spot rise over top oil temperature is the difference in degrees Celsius of the temperature of the hottest spot on the conductor winding over the top oil temperatur...

Page 97: ...transformer are known you can enter values from within a range of 0 to 5 Winding Exponent EXPmxy Range 0 1 5 in 0 1 steps This exponent is a constant that the thermal unit uses in calculating ultimate hot spot conductor rise over top oil temperature H The default values listed in Table 3 3 are from IEEE C57 92 1981 Tables 2 and 4 If specific values for a particular transformer are known you can en...

Page 98: ...s processor to communicate with the SEL 2600A RTD Module and the SEL 387 6 Figure 3 17 Example System Block Diagram Overcurrent Element Application Description The SEL 387 provides numerous overcurrent elements as many as 11 per winding 44 total Four levels of phase instantaneous definite time elements are available for single or three pole feeder protection breaker failure protection overcurrent ...

Page 99: ...e input currents IAWn IBWn and ICWn to pickup setting 50Pn1P If one or more current magnitudes exceed the pickup level a logic 1 asserts at one input to the AND gate at the center The torque control SELOGIC control equation 50Pn1TC determines the other AND input If 50Pn1TC is true Relay Word bit 50Pn1 asserts and starts the timer After the time specified by delay setting 50Pn1D expires a second Re...

Page 100: ...stantaneous Element Figure 3 20 shows the logic for the two nontorque controlled phase instantaneous elements The two elements find application primarily in level detection or phase identification The logic compares magnitudes of phase input currents IAWn IBWn and ICWn to pickup setting 50Pn3P 4P Any phase current exceeding the pickup level will assert the appropriate phase specific Relay Word bit...

Page 101: ...e an electromechanical disk or instantaneously when current drops below pickup The phase inverse time curve looks at all three phase current magnitudes and times on the basis of the greatest current of the three It updates this maximum phase current selection every quarter cycle If the curve times out Relay Word bit 51PnT asserts When all phase currents drop below pickup with or without a curve ti...

Page 102: ... current magnitude exceeds the pickup level a logical 1 asserts at one input to the AND gate at the center The torque control SELOGIC control equation 50Nn1TC determines the other AND input If 50Nn1TC is true Relay Word bit 50Nn1 asserts and the timer starts After the time specified by delay setting 50Nn1D has expired a second Relay Word bit 50Nn1T asserts The 50Nn1T bit asserts only if the 50Nn1 ...

Page 103: ...nes the other AND input If 51QnTC is true Relay Word bit 51Pn asserts and the inverse curve begins timing As with phase inverse time element logic four settings define the curve In this case 51QnP is the pickup 51QnC defines the curve equation 51QnTD defines the time dial and 51QnRS determines how the curve resets Curve time out causes Relay Word bit 51QnT to assert When the current drops below pi...

Page 104: ... 51NnR asserts This bit normally is at logic state 1 when the element is at rest during normal system operation You can use the TAR command to verify the state of the bit You can use the Level 2 serial port command RES or the front panel RESET51 function under the OTHER pushbutton to force the bit to a logical 1 during element testing 51PCm and 51NCm Combined Overcurrent Element m 1 2 The combined...

Page 105: ...rms the following operation on the secondary quantities it receives from the CTs Equation 3 34 where n Phase A Phase B or Phase C The following example illustrates the equivalent operation on the primary quantities entering the CTs Assume CTR1 600 5 120 CTR2 2000 5 400 InW1 2000 A primary InW2 1000 A primary Pickup 8000 A primary where n Phase A Phase B or Phase C _ 51PC1 Pickup Curve Type Time Di...

Page 106: ...common base Equation 3 39 The combined secondary current value is greater than the 51PC1P setting so 51PC1 asserts and the time overcurrent curve begins timing The settings defining the curve in this case are 51PC1P for the pickup setting 51PC1C for the particular curve equation 51PC1TD for the time dial and 51PC1RS for the curve reset Curve time out causes the Relay Word bit 51PC1T to assert When...

Page 107: ...ation on the secondary quantities it receives from the CTs Equation 3 40 The following example illustrates the equivalent operation on the primary quantities entering the CTs Assume CTR1 500 5 100 CTR2 1000 5 200 Pickup 400 A primary Then Equation 3 41 Because CTR1 CTR2 the relay uses CTR2 as the common base Equation 3 42 The combined secondary current value is less than the 51NC1P setting so 51NC...

Page 108: ...ry current value is greater than the 51NC1P setting so 51NC1 asserts and the time overcurrent curve begins timing As with the phase current element four settings define the curve 51NC1P is the pickup setting 51NC1C defines the curve equation 51NC1TD defines the time dial and 51NC1RS determines how the curve resets defines a vector quantity Primary Currents IAW1 3000 5 A IAW2 1545 3 A IBW1 3010 123...

Page 109: ...ilar to those for determination of 51PC1 and 51NC1 assertion Setting Descriptions This subsection contains setting names setting ranges and labels for the overcurrent elements associated with Winding 1 Windings 2 3 and 4 overcurrent element settings have similar names and labels All windings have identical setting ranges NOTE These two overcurrent elements should not be used if the REF function is...

Page 110: ...time element asserts only after current exceeds the level you specify and after a time delay that you specify with the definite time delay setting Definite Time Element Delays 50Pn1D 50Qn1D 50Nn1D Range 0 16000 cycles in 0 25 cycle steps Select a time in cycles that you want definite time elements to wait before asserting Inverse Time Element Pickups 51PnP 51QnP 51NnP 51PCmP 51NCmP Range 1 A OFF 0...

Page 111: ...ction for faults on the adjacent bus and or feeders You can use inverse time overcurrent elements to prevent transformer damage due to excessive through currents caused by slow clearing external faults Thermal and mechanical damage curves should be available from the transformer manufacturer for specific transformer designs You can consult several references including the IEEE C37 91 Guide for Pro...

Page 112: ...cooling requirements after the prolonged outage For these reasons overcurrent protection must be tailored to meet the protection requirements for the specific transformer avoid tripping for various types of nonfault transient conditions and coordinate with upstream and downstream protection devices These factors constrain the selection of settings and characteristics for the applied overcurrent pr...

Page 113: ... wye side of the transformer permitting very sensitive residual overcurrent element pickup settings Time Overcurrent Element Settings The SEL 387 includes time overcurrent elements for phase negative sequence and residual current Each element operates using measured current and five settings that define Pickup current in secondary amperes Operating time curve Operating time dial Element reset char...

Page 114: ...nts for phase negative sequence and residual current There are three separate phase instantaneous elements which can be used for various tripping or supervisory functions defined by the user Each element operates using measured current a pickup setting and for the definite time elements a time delay setting Instantaneous and Definite Time Element Pickup and Time Delay Settings Use the instantaneou...

Page 115: ...20 A secondary with a five cycle trip delay time The phase and negative sequence inverse time elements 51P1 and 51Q1 are set to pick up at 4 A and 6 A respectively both using the U2 or U S Inverse curve on Time Dial 3 with electromechanical reset characteristics One of the phase instantaneous elements 50P13 is set very low at 0 5 A along with 50P23 and 50P33 on the other two windings These element...

Page 116: ...eset setting TD Time dial setting M Applied multiples of pickup current for operating time Tp M 1 for reset time TR M 1 Table 3 5 Equations Associated With U S Curves Curve Type Operating Time Reset Time Figure U1 Moderately Inverse Figure 3 28 U2 Inverse Figure 3 29 U3 Very Inverse Figure 3 30 U4 Extremely Inverse Figure 3 31 U5 Short Time Inverse Figure 3 32 Table 3 6 Equations Associated With I...

Page 117: ...ed With IEC Curves Sheet 2 of 2 Curve Type Operating Time Reset Time Figure Tp TD 120 M 1 TR TD 120 1 M Tp TD 0 05 M 0 04 1 TR TD 4 85 1 M 2 0 50 6 00 5 00 4 00 3 00 2 00 1 00 15 00 12 00 10 00 8 00 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycl...

Page 118: ...Inverse Curve U2 0 50 6 00 5 00 4 00 3 00 2 00 1 00 15 00 12 00 10 00 8 00 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 119: ...ry Inverse Curve U3 12 00 1 00 0 50 10 00 8 00 6 00 5 00 4 00 3 00 2 00 15 00 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 120: ...mely Inverse Curve U4 3 00 2 00 1 00 0 50 15 00 12 00 10 00 8 00 6 00 5 00 4 00 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 121: ... Time Inverse Curve U5 01 5 6 7 8 1 9 02 03 04 05 06 07 1 08 09 2 3 4 5 6 1 7 8 9 2 3 4 5 6 7 8 10 9 20 30 50 40 60 100 90 70 80 80 9 2 3 4 5 6 7 8 10 20 30 40 50 60 70 90 100 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 60 50 30 25 150 125 300 250 1500 1250 600 500 3000 2500 6000 5000 0 50 1 00 2 00 6 00 3 00 4 00 5 00 10 00 8 00 12 00 15 00 ...

Page 122: ... Curve Standard Inverse C1 0 60 0 05 0 50 0 40 0 30 0 20 0 10 1 00 0 90 0 80 0 70 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 123: ... B Curve Very Inverse C2 0 30 0 20 0 10 0 05 1 00 0 90 0 80 0 70 0 60 0 50 0 40 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 124: ... Curve Extremely Inverse C3 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 0 20 0 10 0 05 1 00 0 90 0 80 0 70 0 60 0 50 0 40 0 30 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 125: ... Curve C4 0 20 0 10 0 05 1 00 0 90 0 80 0 70 0 60 0 50 0 40 0 30 7 6 5 1 9 8 1 4 2 3 5 6 8 7 9 1 2 3 4 5 7 6 4 2 3 7 6 5 10 9 8 40 20 30 70 50 60 80 90 100 50 9 8 10 20 30 40 300 200 100 80 60 70 90 1000 900 800 700 600 500 400 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 30 25 60 50 150 125 300 250 3000 2500 600 500 1500 1250 6000 5000 15000 12500 30000 25000 60000 50000 ...

Page 126: ...t Time Inverse Curve C5 10 20 30 40 50 60 70 80 90 100 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 01 02 03 04 05 06 07 08 09 100 1 2 3 4 5 6 7 8 9 5 6 7 8 9 90 80 70 60 50 40 30 20 10 Time in Seconds Time in Cycles 60 Hz 50 Hz 6000 5000 3000 2500 1500 1250 600 500 300 250 150 125 60 50 30 25 15 12 5 6 5 3 2 5 Multiples of Pickup 0 05 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 1 00 ...

Page 127: ...neral Discussion Relay Word bits The above items constitute the principal logic functions of the relay While the protective elements overcurrent elements and the differential elements have fixed internal logic the availability of Relay Word bits and the use of SELOGIC control equations for many of the relay settings permit the user to customize how the protection functions interface with the user ...

Page 128: ...uations Remember that any input Relay Word bit name will always appear on the right side of any SELOGIC control equation as shown below Factory Settings Examples Relay Word bit IN101 is used in the factory settings for the SELOGIC control equation circuit breaker status setting 52A1 IN101 Connect input IN101 to a 52a circuit breaker auxiliary contact for the Winding 1 breaker to provide the relay ...

Page 129: ...h Bit control switches in the additional SELOGIC Control Equation Sets 1 through 3 Pulse momentarily operate the remote bits for this application Latch Bits are discussed later in this section Remote Bit States Not Retained When Power Is Lost The states of the remote bits Relay Word bits RB1 through RB16 are not retained if power to the relay is lost and then restored The remote control switches a...

Page 130: ...icate 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 deasserted to logical 0 Selecting the Active Setting Group The active setting group is selected with SELOGIC control equation settings SS1 through SS6 The serial port GROUP n command see Section 7 Serial Port...

Page 131: ... the front panel GROUP pushbutton in selecting the active setting group If any one of SS1 through SS6 asserts to logical 1 neither the serial port GROUP n command nor the front panel GROUP pushbutton can be used to switch the active setting group But if SS1 through SS6 all deassert to logical 0 the serial port GROUP n command or the front panel GROUP pushbutton can be used to switch the active set...

Page 132: ...etting Group Selection The selector switch has multiple internal contacts arranged to assert inputs IN101 IN102 and IN103 dependent on the switch position As shown in Table 4 3 as the selector switch is moved from one position to another a different setting group is activated The logic in Table 4 2 is implemented in the SELOGIC control equation settings in Table 4 3 Table 4 2 Active Setting Group ...

Page 133: ...o SS4 is asserted requesting a change to group 4 Since SS1 same group as the active group is not asserted the group change process is initiated and CHSG is asserted at the same time as SS4 After the group change is made SG1 will deassert and SG4 will assert indicating the relay is now in group 4 When this agreement of SS4 and SG4 occurs CHSG will deassert to indicate the relay is no longer in the ...

Page 134: ...ewly enabled SS1 through SS6 settings SELOGIC Control Equation Sets 1 3 Variables Each setting group 1 through 6 has three sets of SELOGIC control equation variables for use in constructing SELOGIC control equations In the SEL 387 these variables are of two types Timed variables Latch bits The variables are processed in the order in which they appear in the Setting Sheets If variables that appear ...

Page 135: ...mT variable timed out If SnVm deasserts SnVmT will deassert SnVmDO cycles later Figure 4 3 Timed Variables in SELOGIC Control Equation Sets There are 16 variables of this type spread through the three SELOGIC control equation sets Table 4 4 SELOGIC Control Equation Variables SEL 387 0 Relay Only SELOGIC Control Equation Set Timers Latch Control Switches Latch Bits 1 4 4 2 4 4 3 8 0 Table 4 5 SELOG...

Page 136: ...t contact remains closed The state of a traditional latching relay output contact is changed by pulsing the latching relay inputs see Figure 4 4 Pulse the set input to close set the latching relay output contact Pulse the reset input to open reset the latching relay output contact Often the external contacts wired to the latching relay inputs are from remote control equipment e g SCADA RTU etc Fig...

Page 137: ...latch bit states thus depend on the original state of the latch bit and on the effects of the user changes upon the set and reset equations The net effect is that the latch bits in the SEL 387 behave exactly like traditional latching relays Output Contacts SELOGIC control equation settings OUT101 through OUT107 and OUT201 through OUT212 control Relay Word bits having the same names These Relay Wor...

Page 138: ...r once the new settings are enabled the SELOGIC control equation setting for OUTm will determine the new state of OUTm OUT107 coil operation may be set to follow that of the ALARM contact by setting jumper JMP23 in the left position on the main board OUT107 then will not respond to Relay Word bit OUT107 The OUT107 contact configuration can be set as a or b as noted above See Section 2 Installation...

Page 139: ...sponds only to internal self test routines while A B and C respond to the present state of their respective Global SELOGIC control equation settings The array of LEDs is shown below in Figure 4 6 Figure 4 6 SEL 387 Front Panel LEDs Table 4 6 describes the basic targeting functions associated with each of the 16 LEDs Table 4 6 LED Assignments Sheet 1 of 2 LED Legend Description 1 EN Relay enabled 2...

Page 140: ... at the rising edge of any trip or one cycle later If so the 87E1 bit is also set LED 4 remains lit until reset by the TRGTR element TRGTR is asserted for one cycle either via the TARGET RESET pushbutton on the front panel or via the serial port command TAR R LED 5 87 2 Differential Element 2 This LED will illuminate if the differential elements 87R or 87U are present in the TR1 through TR5 settin...

Page 141: ... is LEDA OCA 87E1 Relay Word bit OCA indicates A phase overcurrent during the fault It is derived by first checking which winding Wn LED is lit then asserting if the associated 50An4 overcurrent element bit is asserted or if the magnitude of the IAWn phase current is greater than or equal to the magnitudes of IBWn and ICWn Relay Word bit 87E1 indicates differential element 87 1 operation and follo...

Page 142: ...Applicable elements include any of the 23 Relay Word bits associated with Winding 2 overcurrent elements LED 14 remains lit until reset by the TRGTR element TRGTR is asserted for one cycle either via the TARGET RESET pushbutton on the front panel or via the serial port command TAR R LED 15 W3 Winding 3 Overcurrent Element Operation This LED will illuminate if any Winding 3 overcurrent element pres...

Page 143: ...on At the top of the diagram is an Edge Trigger Timer It detects the rising edge of TR1 and issues a second output to the OR gate This second output will last the duration of Group setting TDURD minimum trip duration timer Once the rising edge has been detected and the timing started the ongoing state of the TR1 input to the timer is ignored Thus TRIP1 will be asserted for a minimum of TDURD cycle...

Page 144: ...R1 has been asserted This is the essence of the trip logic At the bottom of Figure 4 7 is an additional OR gate The five TRIPm Relay Word bits are all inputs to this gate and the output is another Relay Word bit TRIPL TRIPL asserts for any trip output It may be useful for other applications of SELOGIC control equations in the SEL 387 Close Logic There are four specific sets of close logic within t...

Page 145: ... the closure of the Breaker 1 52a contact The close logic setting 52A1 IN101 When CLS1 asserts OUT105 closes and the breaker begins to close When the breaker closing is complete the 52a contact closes duplicating the operation of the breaker contacts themselves and effectively indicating that the breaker is closed The 52a contact is wired to IN101 When IN101 asserts the equation 52A1 asserts and u...

Page 146: ... bits are asserted or deasserted by various elements within the relay and are used in the fixed internal logic of the relay to make decisions to interpret inputs or to drive outputs These same bits are made available to the user so that the user can exercise flexibility in defining inputs or outputs specifying control variables for internal logic or for creating special customized logic through th...

Page 147: ...tended to detect a change of that value The rising edge operator detects a change from a 0 state to a 1 state The falling edge operator detects a change from a 1 state to a 0 state Typical applications might include triggering an event report or unlatching internal logic These two operators assert a 1 for a single processing interval when they sense the change of state AND and OR Operators and The...

Page 148: ...more than 17 Relay Word bits in its equation setting Instead of placing all Relay Word bits into TRn program some of them into the SELOGIC control equation setting SnVm Next use the resultant SELOGIC control equation variable output Relay Word bit SnVm in the SELOGIC control equation trip setting TRn SELOGIC control equation settings in the Group Setting Class and Global Setting Class can contain ...

Page 149: ...ns Sheet 1 of 2 Row SEL 387 Relay Word Bits 0 EN TRIP INST 87 1 87 2 87 3 50 51 1 A B C N W1 W2 W3 W4 2 50P11 50P11T 50P12 51P1 51P1T 51P1R PDEM1 OCA 3 50A13 50B13 50C13 50P13 50A14 50B14 50C14 50P14 4 50N11 50N11T 50N12 51N1 51N1T 51N1R NDEM1 OC1 5 50Q11 50Q11T 50Q12 51Q1 51Q1T 51Q1R QDEM1 CC1 6 50P21 50P21T 50P22 51P2 51P2T 51P2R PDEM2 OCB 7 50A23 50B23 50C23 50P23 50A24 50B24 50C24 50P24 8 50N2...

Page 150: ...L CSEc TRGTR 42 CLS1 CLS2 CLS3 CLS4 CF1T CF2T CF3T CF4T 43 NOTALMe OUT107 OUT106 OUT105 OUT104 OUT103 OUT102 OUT101 44 OUT201 OUT202 OUT203 OUT204 OUT205 OUT206 OUT207 OUT208 45 OUT209 OUT210 OUT211 OUT212 OUT213 OUT214 OUT215 OUT216 46 d d d d d d d d 47 d d d d d d d d 48 LB1c LB2c LB3c LB4c LB5c LB6c LB7c LB8c 49 LB9c LB10c LB11c LB12c LB13c LB14c LB15c LB16c 50 d d d d d d d d 53 49A01A 49T01A...

Page 151: ...inding 1 A phase instantaneous O C Level 4 element picked up 50B14 Winding 1 B phase instantaneous O C Level 4 element picked up 50C14 Winding 1 C phase instantaneous O C Level 4 element picked up 50P14 50A14 50B14 50C14 4 50N11 Winding 1 residual definite time O C Level 1 element picked up 50N11T Winding 1 residual definite time O C Level 1 element timed out 50N12 Winding 1 residual instantaneous...

Page 152: ...2 Winding 2 residual instantaneous O C Level 2 element picked up 51N2 Winding 2 residual inverse time O C element picked up 51N2T Winding 2 residual inverse time O C element timed out 51N2R Winding 2 residual inverse time O C 51N2 element is reset NDEM2 Winding 2 residual demand current threshold exceeded OC2 Breaker 2 OPEN command execution 9 50Q21 Winding 2 neg seq definite time O C Level 1 elem...

Page 153: ...g 3 neg seq instantaneous O C Level 2 element picked up 51Q3 Winding 3 neg seq inverse time O C element picked up 51Q3T Winding 3 neg seq inverse time O C element timed out 51Q3R Winding 3 neg seq inverse time O C 51Q3 element is reset QDEM3 Winding 3 neg seq demand current threshold exceeded CC3 Breaker 3 CLOSE command execution 14 50P41 Winding 4 phase definite time O C Level 1 element picked up...

Page 154: ...t 1 picked up 87U2 Unrestrained differential element 2 picked up 87U3 Unrestrained differential element 3 picked up 87U Unrestrained differential element picked up 87R1 Restrained differential element 1 picked up 87R2 Restrained differential element 2 picked up 87R3 Restrained differential element 3 picked up 87R Restrained differential element picked up 19 2HB1 Second harmonic block asserted for ...

Page 155: ... residual inverse time O C element is reset DC1 DC battery voltage level 1 exceeded DC2 DC battery voltage level 2 exceeded 23 51PC2 Windings 3 and 4 phase inverse time O C element picked up 51PC2T Windings 3 and 4 phase inverse time O C element timed out 51PC2R Windings 3 and 4 phase inverse time O C element is reset 51NC2 Windings 3 and 4 residual inverse time O C element picked up 51NC2T Windin...

Page 156: ...rted all but SEL 387 0 Relay DCBL DC block asserted all but SEL 387 0 Relay IN106 Input IN106 asserted IN105 Input IN105 asserted IN104 Input IN104 asserted IN103 Input IN103 asserted IN102 Input IN102 asserted IN101 Input IN101 asserted 28 IN208 Input IN208 asserted IN207 Input IN207 asserted IN206 Input IN206 asserted IN205 Input IN205 asserted IN204 Input IN204 asserted IN203 Input IN203 assert...

Page 157: ...asserted S2V3 Set 2 SELOGIC control equation variable S2V3 timer input asserted S2V4 Set 2 SELOGIC control equation variable S2V4 timer input asserted S2V1T Set 2 SELOGIC control equation variable S2V1 timer output asserted S2V2T Set 2 SELOGIC control equation variable S2V2 timer output asserted S2V3T Set 2 SELOGIC control equation variable S2V3 timer output asserted S2V4T Set 2 SELOGIC control eq...

Page 158: ... S2LT4 asserted 37 S3LT1 Set 3 latch bit S3LT1 asserted all but SEL 387 0 Relay S3LT2 Set 3 latch bit S3LT2 asserted all but SEL 387 0 Relay S3LT3 Set 3 latch bit S3LT3 asserted all but SEL 387 0 Relay S3LT4 Set 3 latch bit S3LT4 asserted all but SEL 387 0 Relay S3LT5 Set 3 latch bit S3LT5 asserted all but SEL 387 0 Relay S3LT6 Set 3 latch bit S3LT6 asserted all but SEL 387 0 Relay S3LT7 Set 3 lat...

Page 159: ...hase Breaker 4 contact wear threshold exceeded BCW4 BCWA4 BCWB4 BCWC4 41 TRIP1 Trip 1 logic asserted TRIP2 Trip 2 logic asserted TRIP3 Trip 3 logic asserted TRIP4 Trip 4 logic asserted TRIP5 Trip 5 logic asserted TRIPL Any trip asserted CSE Cooling system efficiency alarm asserted SEL 387 6 Relay only TRGTR TARGET RESET pushbutton TAR R command 42 CLS1 Breaker 1 CLOSE output asserted CLS2 Breaker ...

Page 160: ...utput OUT214 asserted OUT215 Output OUT215 asserted OUT216 Output OUT216 asserted 46 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved 47 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved 48 LB1 Local Bit 1 asserted all but SEL 387 0 Relay LB2 Local Bit 2 asserted all but SEL 387 0 Relay LB3 Local Bit 3 asserted all but SEL 387 0 Relay LB4 Local Bit 4 as...

Page 161: ...EL 387 6 Relays 49T06A RTD6A trip picked up SEL 387 5 and SEL 387 6 Relays 49A07A RTD7A alarm picked up SEL 387 5 and SEL 387 6 Relays 49T07A RTD7A trip picked up SEL 387 5 and SEL 387 6 Relays 49A08A RTD8A alarm picked up SEL 387 5 and SEL 387 6 Relays 49T08A RTD8A trip picked up SEL 387 5 and SEL 387 6 Relays 55 49A09A RTD9A alarm picked up SEL 387 5 and SEL 387 6 Relays 49T09A RTD9A trip picked...

Page 162: ...DA SEL 387 5 and SEL 387 6 Relays RTDINA State of external RTDA module s digital input SEL 387 5 and SEL 387 6 Relays COMFLB Asserts when communications fails or when out of range temperature data received from RTDB SEL 387 5 and SEL 387 6 Relays RTDINB State of external RTDB module s digital input SEL 387 5 and SEL 387 6 Relays ISQTAL Cumulative through fault I2t on a phase of a designated windin...

Page 163: ... SEL 387 6 Relays 55 49A11B RTD11B alarm picked up SEL 387 5 and SEL 387 6 Relays 58 49A12A RTD12A alarm picked up SEL 387 5 and SEL 387 6 Relays 55 49A12B RTD12B alarm picked up SEL 387 5 and SEL 387 6 Relays 58 49T01A RTD1A trip picked up SEL 387 5 and SEL 387 6 Relays 53 49T01B RTD1B trip picked up SEL 387 5 and SEL 387 6 Relays 56 49T02A RTD2A trip picked up SEL 387 5 and SEL 387 6 Relays 53 4...

Page 164: ...up 11 50A34 Winding 3 A phase instantaneous O C Level 4 element picked up 11 50A43 Winding 4 A phase instantaneous O C Level 3 element picked up 15 50A44 Winding 4 A phase instantaneous O C Level 4 element picked up 15 50B13 Winding 1 B phase instantaneous O C Level 3 element picked up 3 50B14 Winding 1 B phase instantaneous O C Level 4 element picked up 3 50B23 Winding 2 B phase instantaneous O C...

Page 165: ...ent picked up 8 50N31 Winding 3 residual definite time O C Level 1 element picked up 12 50N31T Winding 3 residual definite time O C Level 1 element timed out 12 50N32 Winding 3 residual instantaneous O C Level 2 element picked up 12 50N41 Winding 4 residual definite time O C Level 1 element picked up 16 50N41T Winding 4 residual definite time O C Level 1 element timed out 16 50N42 Winding 4 residu...

Page 166: ...l 1 element picked up 13 50Q31T Winding 3 neg seq definite time O C Level 1 element timed out 13 50Q32 Winding 3 neg seq instantaneous O C Level 2 element picked up 13 50Q41 Winding 4 neg seq definite time O C element picked up 17 50Q41T Winding 4 neg seq definite time O C element timed out 17 50Q42 Winding 4 neg seq instantaneous O C Level 2 element picked up 17 51N1 Winding 1 residual inverse ti...

Page 167: ... inverse time O C element timed out 14 51PC1 Windings 1 and 2 phase inverse time O C element picked up 22 51PC1R Windings 1 and 2 phase inverse time O C element is reset 22 51PC1T Windings 1 and 2 phase inverse time O C element timed out 22 51PC2 Windings 3 and 4 phase inverse time O C element picked up 23 51PC2R Windings 3 and 4 phase inverse time O C element is reset 23 51PC2T Windings 3 and 4 p...

Page 168: ... differential element 1 picked up 18 87U2 Unrestrained differential element 2 picked up 18 87U3 Unrestrained differential element 3 picked up 18 BCW1 BCWA1 BCWB1 BCWC1 39 BCW2 BCWA2 BCWB2 BCWC2 39 BCW3 BCWA3 BCWB3 BCWC3 40 BCW4 BCWA4 BCWB4 BCWC4 40 BCWA1 A phase Breaker 1 contact wear threshold exceeded 39 BCWA2 A phase Breaker 2 contact wear threshold exceeded 39 BCWA3 A phase Breaker 3 contact w...

Page 169: ...elay only 26 CSE Cooling system efficiency alarm asserted SEL 387 6 Relay only 41 CTS Current transformer saturation not available in the SEL 387 0 Relay prior to firmware version R602 14 DC1 DC battery voltage level 1 exceeded 22 DC2 DC battery voltage level 2 exceeded 22 DC3 DC battery voltage level 3 exceeded 23 DC4 DC battery voltage level 4 exceeded 23 DCBL DC block asserted all but SEL 387 0...

Page 170: ... Relay 49 LB15 Local Bit 15 asserted all but SEL 387 0 Relay 49 LB16 Local Bit 16 asserted all but SEL 387 0 Relay 49 LB2 Local Bit 2 asserted all but SEL 387 0 Relay 48 LB3 Local Bit 3 asserted all but SEL 387 0 Relay 48 LB4 Local Bit 4 asserted all but SEL 387 0 Relay 48 LB5 Local Bit 5 asserted all but SEL 387 0 Relay 48 LB6 Local Bit 6 asserted all but SEL 387 0 Relay 48 LB7 Local Bit 7 assert...

Page 171: ...t OUT213 asserted 45 OUT214 Output OUT214 asserted 45 OUT215 Output OUT215 asserted 45 OUT216 Output OUT216 asserted 45 PDEM1 Winding 1 phase demand current threshold exceeded 2 PDEM2 Winding 2 phase demand current threshold exceeded 6 PDEM3 Winding 3 phase demand current threshold exceeded 10 PDEM4 Winding 4 phase demand current threshold exceeded 14 QDEM1 Winding 1 neg seq demand current thresho...

Page 172: ...1V1T Set 1 SELOGIC control equation variable S1V1 timer output asserted 32 S1V2 Set 1 SELOGIC control equation variable S1V2 timer input asserted 32 S1V2T Set 1 SELOGIC control equation variable S1V2 timer output asserted 32 S1V3 Set 1 SELOGIC control equation variable S1V3 timer input asserted 32 S1V3T Set 1 SELOGIC control equation variable S1V3 timer output asserted 32 S1V4 Set 1 SELOGIC contro...

Page 173: ...LOGIC control equation variable S3V1 timer output asserted 35 S3V2 Set 3 SELOGIC control equation variable S3V2 timer input asserted 34 S3V2T Set 3 SELOGIC control equation variable S3V2 timer output asserted 35 S3V3 Set 3 SELOGIC control equation variable S3V3 timer input asserted 34 S3V3T Set 3 SELOGIC control equation variable S3V3 timer output asserted 35 S3V4 Set 3 SELOGIC control equation va...

Page 174: ...arm threshold exceeded 19 TH5T Fifth harmonic alarm threshold exceeded for longer than TH5D 19 TLL Total accumulated loss of life alarm asserted SEL 387 6 Relay only 38 TO1 Top oil temperature alarm level 1 asserted SEL 387 6 Relay only 38 TO2 Top oil temperature alarm level 2 asserted SEL 387 6 Relay only 38 TRGTR TARGET RESET pushbutton TAR R command 41 TRIP1 Trip 1 logic asserted 41 TRIP2 Trip ...

Page 175: ... residual currents for all four winding inputs Operate restraint second harmonic and fifth harmonic currents for the three differential elements There are several report formats employing different groups of the above quantities accessible by variants of the METER command through the relay serial port This information is also available at the relay front panel via the LCD display There is also a s...

Page 176: ... D command the individual phase demand currents as well as the negative sequence and residual demand currents for each winding are displayed in primary rms amperes If the command is typed as MET D m where m is any number from 1 to 32767 the report will be repeated m times in succession In this mode subsequent reports are not generated until the previous report has been completely sent The format f...

Page 177: ...xceeds the register value it replaces the value in the register and becomes the new peak value These peak values are time and date stamped In response to the MET P command the phase current peak demands as well as the negative sequence and residual current peak demands for each winding are displayed in primary amperes If the command is typed as MET P m where m is any number from 1 to 32767 the rep...

Page 178: ...or the MET DIF report is as follows METER DIF Enter XFMR 1 Date MM DD YY Time HH MM SS SSS STATION A Operate Currents Restraint Currents IOP1 IOP2 IOP3 IRT1 IRT2 IRT3 I Mult of Tap 123 12 123 12 123 12 123 12 123 12 123 12 Second Harmonic Currents Fifth Harmonic Currents I1F2 I2F2 I3F2 I1F5 I2F5 I3F5 I Mult of Tap 123 12 123 12 123 12 123 12 123 12 123 12 The quantities I1F2 IOP1 I2F2 IOP2 I3F2 IO...

Page 179: ...eter current values to zero This is useful during testing for example so that previous test quantities do not appear as part of the metered values or in order to check the shape of the rising exponential for a fixed current over a period of time The MET RP n Reset Peak demand command stores the present values of the demands along with their associated date time stamps in the registers used to stor...

Page 180: ... 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 5 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 00 0 01 0 01 0 02 6 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 7 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 00 0 00 8 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 9 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 00 0 00 10 0 00 0 00 0 00 0 00 0 00 0 0...

Page 181: ...ery conditions and to view how station dc battery voltage fluctuates during tripping closing and other dc control functions The monitor measures station dc battery voltage applied to the rear panel terminals labeled Z25 and Z26 Access the station dc battery monitor settings DC1P DC2P DC3P and DC4P with the SET G command Instantaneous Battery Voltage Values The MET serial port command provides inst...

Page 182: ...3 asserts and the relay triggers a warning Detection of Voltage Dips in Event Reports You can also use the battery monitor voltage threshold settings to detect momentary supply voltage fluctuations during periods of high demand on the station battery and charger system The digital event report lists assertion of Relay Word bits DC1 through DC4 View this listing with the EVE D serial port command T...

Page 183: ...e separate current accumulators and trip counters for internal and external trips An internal trip is defined as one initiated by the trip equation TRn which is associated with the particular Breaker n that BKMONn is monitoring The monitor logic examines for example the status of the TRIP1 variable at the time the BKMON1 setting equation is asserted If the TRIP1 variable is asserted when BKMON1 as...

Page 184: ...current in kiloamperes kA The scales are logarithmic on both axes For each Breaker n three points are input in the Global setting area as relay settings The points are defined by pairs of coordinates of current and operations For Breaker n these are the points BnKAP1 BnCOP1 BnKAP2 BnCOP2 TC 52A 1 CS T Control Switch Trip BKMON1 IN106 SEL 387 Trip Bus Other External Trips OUT101 TRIP 1 52 1 Trip Co...

Page 185: ...value of current chosen to provide the closest visual fit to the manufacturer s curve The two straight line segments of the curve between the three defined points define number of operations as a function of current in kiloamperes by an equation of the form Equation 5 3 To determine the constants K and alpha for a given segment any two current operations pairs in that segment must be known For any...

Page 186: ...ction and maintenance may be required After breaker maintenance is performed or a new breaker installed the breaker monitor operation counters cumulative interrupted currents by pole and percent wear by pole should be reset to zero This can be done via the BRE R n or BRE n R serial port command or from the front panel via the OTHER pushbutton menu Both the BRE W n and BRE R n commands can be execu...

Page 187: ...KER MONITOR RESET FOR Bkr1 04 21 97 14 35 15 742 Bkr2 04 21 97 14 35 15 821 Bkr3 04 21 97 14 35 15 898 Bkr4 04 21 97 14 35 15 975 Thermal Monitor SEL 387 6 Relay The thermal report functions provide information about the thermal status of the transformer s monitored by the SEL 387 6 There are four different types of thermal reports that display the present thermal status event reports hourly profi...

Page 188: ...Load Per Unit 0 96 In Service Cooling Stage 1 Ambient deg C 15 0 Calculated Top Oil deg C 23 4 Measured Top Oil deg C 400 0 Winding Hot Spot deg C 46 6 Aging Acceleration Factor FAA 0 00 Rate of LOL day 0 00 Total Accumulated LOL 0 00 Time Assert TLL hours 0 00 Thermal Event Report Quantities Thermal Element Conditions The load condition value can be Normal Warning 1 Warning 2 or Warning 3 Load Cu...

Page 189: ...sius is the top oil temperature of the transformer computed using the load current The maximum value displayed is 3276 C Measured Top Oil Temperature The value displayed in degrees Celsius is the top oil temperature of the transformer received from the serial port If no data or invalid data are received from the serial port the value displayed is 0 Winding Hot Spot Temperature The value displayed ...

Page 190: ...average insulation aging acceleration factor FAA The format for the THE H report is as follows THE H Enter XFMR 1 Date 04 24 00 Time 13 20 03 956 STATION A FID SEL 387 6 X117 V0 Z001001 D20000419 Transformer 1 Ambient Calc Measured Load Date Time Temp Top Oil Top Oil Hot Spot Current FAA 04 24 00 13 00 15 0 32 5 0 32 7 0 04 0 0 04 24 00 12 00 15 0 32 5 0 32 8 0 05 0 0 Transformer 2 Ambient Calc Me...

Page 191: ... 0 34 2 0 48 0 0 0 00 0 00 Retrieving Thermal Data Reports Thermal data reports are accessed with the THE command in the following different ways Table 5 2 Using the THE Command to Access Data Reports Sheet 1 of 2 Example THE Serial Port Commands Format THE Enter THE command with no additional parameters to display the present status of the monitored transformer THE 1 Enter THE command followed by...

Page 192: ...ue between zero and 100 percent This command initializes the total loss of life value to the preset value entered by the user clears all the thermal archive data and restarts the thermal element Through Fault Event Monitor Figure 5 6 shows a distribution feeder fault beyond the protection zone of the SEL 387 5 and SEL 387 6 Relays Nevertheless the fault current passes through the transformer bank ...

Page 193: ...nitored for maximum currents for through fault events Changing setting ETHRU resets clears through fault event information see TFE C and TFE R command discussions that follow Setting THRU triggers the through fault event the through fault event monitor starts acquiring maximum current and duration information along with a date time tag Typically the THRU setting is set with an overcurrent element ...

Page 194: ... event monitor uses the recorded duration time value and maximum currents to perform simple I2t calculations and cumulatively store results of these calculations for each monitored phase For example if a through fault is 6000 A primary maximum and lasts 0 067 sec the monitor would calculate I2t for that event as follows Equation 5 8 If the above calculation were for the example in Figure 5 7 it wo...

Page 195: ...Last Reset 02 10 04 19 56 22 Winding 1 Total I squared t kA 2 seconds primary A phase B phase C phase 1 783 88 270 6 610 Date Time Duration IA IB IC seconds A primary max 1 02 14 04 18 59 22 244 5 002 241 4158 260 2 02 11 04 11 37 55 495 30 834 220 241 451 In the above response only two through fault events have been recorded since the monitor was last reset most recent event listed first labeled ...

Page 196: ...gh fault events at bottom are not disturbed TFE Enter XFMR 1 Date 02 12 04 Time 18 59 49 130 STATION A FID SEL 387E X300 V0 Z102102 D20040211 Number of Through Faults 10 Last Reset 02 10 04 19 56 22 Winding 1 Total I squared t kA 2 seconds primary A phase B phase C phase 147 800 303 500 237 900 Date Time Duration IA IB IC seconds A primary max 1 02 14 04 18 59 22 244 5 002 241 4158 260 2 02 11 04 ...

Page 197: ... failure states others only have failure states Status Monitor Report Function STATUS Command The STATUS command displays a report of the self test diagnostics The relay automatically executes the STATUS command whenever the self test software enters a warning or failure state If a warning or failure state occurs the next time the STA command is issued the warning state is reported If a warning or...

Page 198: ... RAM failure There is no warning state for this test Flash ROM The relay checks the flash read only memory ROM by computing a checksum If the computed value does not agree with the stored value the relay declares a ROM failure There is no warning state for this test Analog to Digital Converter The relay verifies the A D converter function by checking the A D conversion time The test fails if conve...

Page 199: ...5 5 20 Vdc 4 50 5 40 Vdc 5 V Regulated 4 75 5 25 Vdc 4 50 v5 40 Vdc 12 V Power Supply 11 50 12 50 Vdc 11 20 14 00 Vdc 12 V Power Supply 11 50 12 50 Vdc 11 20 14 00 Vdc 15 V Power Supply 14 40 15 60 Vdc 14 00 16 00 Vdc 15 V Power Supply 14 40 15 60 Vdc 14 00 16 00 Vdc Temperature 40 85 C 50 100 C RAM NA Cannot READ WRITE Flash ROM NA Bad Checksum A D NA Slow Conversion Critical RAM NA Bad Checksum ...

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Page 201: ...ttings Changes Via the Front Panel The relay front panel SET pushbutton provides access to the Relay Global and Port settings only Thus the corresponding Relay Global and Port settings sheets that follow in this section can also be used when making these settings via the front panel Refer to Figure 8 8 for information on front panel settings Table 6 1 Serial Port SET Commands Command Settings Type...

Page 202: ...The ALARM contact closes momentarily for a b contact opens for an a and the EN LED extinguishes while the relay is disabled The relay is disabled for about one second If Logic settings are changed for the active group the relay can be disabled for up to 15 seconds If changes are made to the Relay or Logic settings for a setting group other than the active setting group see Table 6 1 the relay is n...

Page 203: ...re available for all five demand ammeters in units of amps secondary The thresholds are PDEMnP QDEMnP and NDEMnP for the phase A B and C negative sequence and residual demand ammeters for Winding n If demand currents exceed the set threshold the respective Relay Word bit PDEMn QDEMn or NDEMn asserts You can use these Relay Word bits to alarm for phase overload and negative sequence or residual cur...

Page 204: ...ed or unrestrained is detected TR5 is not used and is set to zero In general definition of the TR1 and TR5 variables should include only Relay Word bits which remain firmly asserted during a fault but otherwise are not asserted For this reason rising edge detection falling edge detection and the NOT operator should be avoided for the Relay Word bits used in these five settings Exceptions might be ...

Page 205: ...e to be the presence of any trip logic output That is ULCL1 TRIP1 TRIP4 ULCL2 TRIP2 TRIP4 and ULCL3 TRIP3 TRIP4 ULCL4 is not used and is set to zero ULCLn will remove the seal in of the close logic and return Relay Word bit CLSn to zero A closed 52a contact or a Close Failure Detection will also unlatch the Close Logic The output contact that follows the CLSn bit will open in response The Trip Log...

Page 206: ...ings to complete the setting process These are the following Date format Front panel time out Scroll data Group change delay These settings are Global settings accessible with the SET G command from a communications port or the front panel The DATE_F setting permits the user to define either a Month Day Year MDY format or a Year Month Day YMD format for all relay date reporting Default is MDY Use ...

Page 207: ...L designations with more familiar phase identifiers such as R S T Red Blue Yellow and so forth The new labels will appear wherever the currents were identified by the existing labels including the displays for serial port commands STAtus BREaker EVEnt and METer including the variants of each command The new labels will also appear in the front panel LCD displays for the STATUS and METER pushbutton...

Page 208: ... of operation during a complicated event with multiple device operations within a short time interval The settings for the SER are the trigger conditions and the Relay Word bit ALIAS names Up to 96 total Relay Word bit names can be selected and entered into settings SER1 SER2 SER3 and SER4 in any order with a maximum of 24 bits in any SERn Up to 20 Relay Word bits can be given ALIAS names to make ...

Page 209: ...1C U2 51P1TD 3 00 51P1RS Y 51P1TC 1 50Q11P OFF 50Q12P OFF 51Q1P 6 00 51Q1C U2 51Q1TD 3 00 51Q1RS Y 51Q1TC 1 50N11P OFF 50N12P OFF 51N1P OFF DATC1 15 PDEM1P 7 00 QDEM1P 1 00 NDEM1P 1 00 50P21P OFF 50P22P OFF 50P23P 0 50 50P24P 3 50 51P2P 3 50 51P2C U2 51P2TD 3 50 51P2RS Y 51P2TC 1 Press RETURN to continue 50Q21P OFF 50Q22P OFF 51Q2P 5 25 51Q2C U2 51Q2TD 3 50 51Q2RS Y 51Q2TC 1 50N21P OFF 50N22P OFF ...

Page 210: ...2T 51Q2T OC2 TR3 50P31 51P3T OC3 TR4 87R 87U TR5 0 ULTR1 50P13 ULTR2 50P23 Press RETURN to continue ULTR3 50P33 ULTR4 50P13 50P23 50P33 ULTR5 0 52A1 IN101 52A2 IN102 52A3 IN103 52A4 0 CL1 CC1 LB4 IN104 CL2 CC2 IN105 CL3 CC3 IN106 CL4 0 ULCL1 TRIP1 TRIP4 ULCL2 TRIP2 TRIP4 ULCL3 TRIP3 TRIP4 ULCL4 0 ER 50P11 51P1 51Q1 51P2 51Q2 51P3 OUT101 TRIP1 OUT102 TRIP2 OUT103 TRIP3 OUT104 TRIP4 Press RETURN to ...

Page 211: ...51Q1P 1 20 51Q1C U2 51Q1TD 3 00 51Q1RS Y 51Q1TC 1 50N11P OFF 50N12P OFF 51N1P OFF DATC1 15 PDEM1P 1 40 QDEM1P 0 20 NDEM1P 0 20 50P21P OFF 50P22P OFF 50P23P 0 10 50P24P 0 70 51P2P 0 70 51P2C U2 51P2TD 3 50 51P2RS Y 51P2TC 1 Press RETURN to continue 50Q21P OFF 50Q22P OFF 51Q2P 1 05 51Q2C U2 51Q2TD 3 50 51Q2RS Y 51Q2TC 1 50N21P OFF 50N22P OFF 51N2P OFF DATC2 15 PDEM2P 1 40 QDEM2P 0 20 NDEM2P 0 20 50P...

Page 212: ...om the 5 A relay settings The Global Port and SER settings remain the same Settings Sheets The rest of this section consists of Settings Sheets and an example of how the sheets could be filled out You can photocopy the Settings Sheets and write your settings on the copy before you enter the settings in the relay The Settings Sheets begin with the Group Settings SET Command followed by Global Setti...

Page 213: ...hresholds Y N EOC1 Enable Winding 2 O C Elements and Dmd Thresholds Y N EOC2 Enable Winding 3 O C Elements and Dmd Thresholds Y N EOC3 Enable Winding 4 O C Elements and Dmd Thresholds Y N EOC4 Enable Combined O C Elements Y N EOCC Enable Thermal Element Y N SEL 387 6 Relay only ETHER Enable RTDA Element Y N SEL 387 5 and SEL 387 6 Relays only E49A Enable RTDB Element Y N SEL 387 5 and SEL 387 6 Re...

Page 214: ...g 4 Line to Line Voltage 1 1000 kV VWDG4 Differential Elements NOTE TAP1 TAP4 are auto set by relay if MVA setting is not OFF Winding 1 Current Tap 0 50 155 00 A secondary 5 A 0 10 31 00 A secondary 1 A TAP1 Winding 2 Current Tap 0 50 155 00 A secondary 5 A 0 10 31 00 A secondary 1 A TAP2 Winding 3 Current Tap 0 50 155 00 A secondary 5 A 0 10 31 00 A secondary 1 A TAP3 Winding 4 Current Tap 0 50 1...

Page 215: ...3 12 23 123 32IOP Positive Sequence Current Restraint Factor I0 I1 0 02 0 50 a0 Residual Current Sensitivity Threshold 0 25 15 00 A secondary 5 A 0 05 3 00 A secondary 1 A 50GP Winding 1 O C Elements Winding 1 Phase O C Elements Phase Def Time O C Level 1 PU OFF 0 25 100 00 A secondary 5 A OFF 0 05 20 00 A secondary 1 A 50P11P Phase Level 1 O C Delay 0 16000 cycles 50P11D 50P11 Torque Control SELO...

Page 216: ...100 00 A secondary 5 A OFF 0 05 20 00 A secondary 1 A 50Q11P Neg Seq Level 1 O C Delay 0 5 16000 cycles 50Q11D 50Q11 Torque Control SELOGIC control equation 50Q11TC Neg Seq Inst O C Level 2 PU OFF 0 25 100 00 A secondary 5 A OFF 0 05 20 00 A secondary 1 A 50Q12P 50Q12 Torque Control SELOGIC control equation 50Q12TC Neg Seq Inv Time O C PU OFF 0 5 16 0 A secondary 5 A OFF 0 1 3 2 A secondary 1 A 51...

Page 217: ...Dial US 0 5 15 0 IEC 0 05 1 00 51N1TD Residual Inv Time O C EM Reset Y N 51N1RS 51N1 Torque Control SELOGIC control equation 51N1TC Winding 1 Demand Metering Demand Ammeter Time Constant OFF 5 255 min DATC1 Phase Demand Ammeter Threshold 0 5 16 0 A secondary 5 A 0 1 3 2 A secondary 1 A PDEM1P Neg Seq Demand Ammeter Threshold 0 5 16 0 A secondary 5 A 0 1 3 2 A secondary 1 A QDEM1P Residual Demand A...

Page 218: ...nv Time O C Curve U1 U5 C1 C5 51P2C Phase Inv Time O C Time Dial US 0 5 15 0 IEC 0 05 1 00 51P2TD Phase Inv Time O C EM Reset Y N 51P2RS 51P2 Torque Control SELOGIC control equation 51P2TC Winding 2 Negative Sequence O C Elements NOTE All negative sequence element pickup settings are in terms of 3I2 Neg Seq Def Time O C Level 1 PU OFF 0 25 100 00 A secondary 5 A OFF 0 05 20 00 A secondary 1 A 50Q2...

Page 219: ...C control equation 50N21TC Residual Inst O C Level 2 PU OFF 0 25 100 00 A secondary 5 A OFF 0 05 20 00 A secondary 1 A 50N22P 50N22 Torque Control SELOGIC control equation 50N22TC Residual Inv Time O C PU OFF 0 5 16 0 A secondary 5 A OFF 0 1 3 2 A secondary 1 A 51N2P Residual Inv Time O C Curve U1 U5 C1 C5 51N2C Residual Inv Time O C Time Dial US 0 5 15 0 IEC 0 05 1 00 51N2TD Residual Inv Time O C...

Page 220: ... 00 A secondary 1 A 50P32P 50P32 Torque Control SELOGIC control equation 50P32TC Phase Inst O C Level 3 PU OFF 0 25 100 00 A secondary 5 A OFF 0 05 20 00 A secondary 1 A 50P33P Phase Inst O C Level 4 PU OFF 0 25 100 00 A secondary 5 A OFF 0 05 20 00 A secondary 1 A 50P34P Phase Inv Time O C PU OFF 0 5 16 0 A secondary 5 A OFF 0 1 3 2 A secondary 1 A 51P3P Phase Inv Time O C Curve U1 U5 C1 C5 51P3C...

Page 221: ...Time Dial US 0 5 15 0 IEC 0 05 1 00 51Q3TD Neg Seq Inv Time O C EM Reset Y N 51Q3RS 51Q3 Torque Control SELOGIC control equation 51Q3TC Winding 3 Residual O C Elements Residual Def Time O C Level 1 PU OFF 0 25 100 00 A secondary 5 A OFF 0 05 20 00 A secondary 1 A 50N31P Residual Level 1 O C Delay 0 16000 cycles 50N31D 50N31 Torque Control SELOGIC control equation 50N31TC Residual Inst O C Level 2 ...

Page 222: ...ry 1 A NDEM3P Winding 4 O C Elements Winding 4 Phase O C Elements Phase Def Time O C Level 1 PU OFF 0 25 100 00 A secondary 5 A OFF 0 05 20 00 A secondary 1 A 50P41P Phase Level 1 O C Delay 0 16000 cycles 50P41D 50P41 Torque Control SELOGIC control equation 50P41TC Phase Inst O C Level 2 PU OFF 0 25 100 00 A secondary 5 A OFF 0 05 20 00 A secondary 1 A 50P42P 50P42 Torque Control SELOGIC control e...

Page 223: ...16000 0 cycles 50Q41D 50Q41 Torque Control SELOGIC control equation 50Q41TC Neg Seq Inst O C Level 2 PU OFF 0 25 100 00 A secondary 5 A OFF 0 05 20 00 A secondary 1 A 50Q42P 50Q42 Torque Control SELOGIC control equation 50Q42TC Neg Seq Inv Time O C PU OFF 0 5 16 0 A secondary 5 A OFF 0 1 3 2 A secondary 1 A 51Q4P Neg Seq Inv Time O C Curve U1 U5 C1 C5 51Q4C Neg Seq Inv Time O C Time Dial US 0 5 15...

Page 224: ...Metering Demand Ammeter Time Constant OFF 5 255 min DATC4 Phase Demand Ammeter Threshold OFF 0 5 16 0 A secondary 5 A OFF 0 1 3 2 A secondary 1 A PDEM4P Neg Seq Demand Ammeter Threshold OFF 0 5 16 0 A secondary 5 A OFF 0 1 3 2 A secondary 1 A QDEM4P Residual Demand Ammeter Threshold OFF 0 5 16 0 A secondary 5 A OFF 0 1 3 2 A secondary 1 A NDEM4P Combined O C Elements NOTE The combined overcurrent ...

Page 225: ...me O C PU OFF 0 5 16 0 A secondary 5 A OFF 0 1 3 2 A secondary 1 A Must be OFF if Restricted Earth Fault is used 51PC2P W3 W4 Phase Inv Time O C Curve U1 U5 C1 C5 51PC2C W3 W4 Phase Inv Time O C Time Dial US 0 5 15 0 IEC 0 05 1 00 51PC2TD W3 W4 Phase Inv Time O C EM Reset Y N 51PC2RS W3 W4 Residual O C Element W3 W4 Residual Inv Time O C PU OFF 0 5 16 0 A secondary 5 A OFF 0 1 3 2 A secondary 1 A ...

Page 226: ... Cooling Stage 2 SELOGIC control equation CS22S Cooling Stage 2 SELOGIC control equation CS32S Cooling Stage 3 Rating 0 2 5000 0 MVA MCS13 Cooling Stage 3 Rating 0 2 5000 0 MVA MCS23 Cooling Stage 3 Rating 0 2 5000 0 MVA MCS33 Cooling Stage 3 SELOGIC control equation CS13S Cooling Stage 3 SELOGIC control equation CS23S Cooling Stage 3 SELOGIC control equation CS33S Default Ambient Temp 40 85ºC DTM...

Page 227: ... HST2 Aging Acceleration Factor Limit 1 0 00 599 99 FAAL1 Aging Acceleration Factor Limit 2 0 00 599 99 FAAL2 Daily Loss of Life Limit 0 00 99 99 RLOLL Total Loss of Life Limit 0 00 99 99 TLOLL Cooling System Efficiency Transformer 1 5 100ºC CSEP1 Cooling System Efficiency Transformer 2 5 100ºC CSEP2 Cooling System Efficiency Transformer 3 5 100ºC CSEP3 General Cooling System Constants Nominal Ins...

Page 228: ...R13 Oil Exponent 0 1 5 EXPn13 Winding Exponent 0 1 5 EXPm13 Transformer 2 Hot Spot Thermal Time Constant 0 01 2 00 hr Ths2 Constant to Calc FAA 0 100000 BFFA2 Cooling Stage 1 Constants Top Oil Rise Amb 0 1 100 0ºC THor21 Hot Spot Cond Rise Top Oil 0 1 100 0ºC THgr21 Ratio Losses 0 0 100 0 RATL21 Oil Thermal Time Constant 0 1 20 0 hr OTR21 Oil Exponent 0 1 5 EXPn21 Winding Exponent 0 1 5 EXPm21 Coo...

Page 229: ...Cooling Stage 2 Constants Top Oil Rise Amb 0 1 100 0ºC THor32 Hot Spot Cond Rise Top Oil 0 1 100 0ºC THgr32 Ratio Losses 0 0 100 0 RATL32 Oil Thermal Time Constant 0 1 20 0 hr OTR32 Oil Exponent 0 1 5 EXPn32 Winding Exponent 0 1 5 EXPm32 Cooling Stage 3 Constants Top Oil Rise Amb 0 1 100 0ºC THor33 Hot Spot Cond Rise Top Oil 0 1 100 0ºC THgr33 Ratio Losses 0 0 100 0 RATL33 Oil Thermal Time Constan...

Page 230: ... 32 482 F 49T09A RTD 10A Alarm Temperature OFF 32 482 F 49A10A RTD 10A Trip Temperature OFF 32 482 F 49T10A RTD 11A Alarm Temperature OFF 32 482 F 49A11A RTD 11A Trip Temperature OFF 32 482 F 49T11A RTD 12A Alarm Temperature OFF 32 482 F 49A12A RTD 12A Trip Temperature OFF 32 482 F 49T12A RTD B Elements SEL 387 5 and SEL 387 6 Relays Only RTD 1B Alarm Temperature OFF 32 482 F 49A01B RTD 1B Trip Te...

Page 231: ...F 32 482 F 49T11B RTD 12B Alarm Temperature OFF 32 482 F 49A12B RTD 12B Trip Temperature OFF 32 482 F 49T12B Miscellaneous Timers Minimum Trip Duration Time Delay 4 8000 cycles TDURD Close Failure Logic Time Delay OFF 0 8000 cycles CFD SELOGIC Control Equations Set 1 Set 1 Variable 1 SELOGIC control equation S1V1 S1V1 Timer Pickup 0 999999 cycles S1V1PU S1V1 Timer Dropout 0 999999 cycles S1V1DO Se...

Page 232: ... Latch Bit 4 SET Input SELOGIC control equation S1SLT4 Set 1 Latch Bit 4 RESET Input SELOGIC control equation S1RLT4 SELOGIC Control Equations Set 2 Set 2 Variable 1 SELOGIC control equation S2V1 S2V1 Timer Pickup 0 999999 cycles S2V1PU S2V1 Timer Dropout 0 999999 cycles S2V1DO Set 2 Variable 2 SELOGIC control equation S2V2 S2V2 Timer Pickup 0 999999 cycles S2V2PU S2V2 Timer Dropout 0 999999 cycle...

Page 233: ... RESET Input SELOGIC control equation S2RLT4 SELOGIC Control Equations Set 3 S3LT1 To S3LT8 are not included in the SEL 387 0 Relay Set 3 Variable 1 SELOGIC control equation S3V1 S3V1 Timer Pickup 0 999999 cycles S3V1PU S3V1 Timer Dropout 0 999999 cycles S3V1DO Set 3 Variable 2 SELOGIC control equation S3V2 S3V2 Timer Pickup 0 999999 cycles S3V2PU S3V2 Timer Dropout 0 999999 cycles S3V2DO Set 3 Va...

Page 234: ...999 cycles S3V8PU S3V8 Timer Dropout 0 999999 cycles S3V8DO Set 3 Latch Bit 1 SET Input SELOGIC control equation S3SLT1 Set 3 Latch Bit 1 RESET Input SELOGIC control equation S3RLT1 Set 3 Latch Bit 2 SET Input SELOGIC control equation S3SLT2 Set 3 Latch Bit 2 RESET Input SELOGIC control equation S3RLT2 Set 3 Latch Bit 3 SET Input SELOGIC control equation S3SLT3 Set 3 Latch Bit 3 RESET Input SELOGI...

Page 235: ...trol equation S3RLT6 Set 3 Latch Bit 7 SET Input SELOGIC control equation S3SLT7 Set 3 Latch Bit 7 RESET Input SELOGIC control equation S3RLT7 Set 3 Latch Bit 8 SET Input SELOGIC control equation S3SLT8 Set 3 Latch Bit 8 RESET Input SELOGIC control equation S3RLT8 Trip Logic TR1 TR2 TR3 TR4 TR5 ULTR1 ULTR2 ULTR3 ULTR4 ULTR5 Close Logic 52A1 52A2 52A3 52A4 CL1 CL2 CL3 CL4 ULCL1 ULCL2 ULCL3 ULCL4 ...

Page 236: ...e________________ Event Report Triggering ER Output Contact Logic Standard Outputs OUT101 OUT102 OUT103 OUT104 OUT105 OUT106 OUT107 Output Contact Logic Extra Interface Board 2 or 6 OUT201 OUT202 OUT203 OUT204 OUT205 OUT206 OUT207 OUT208 OUT209 OUT210 OUT211 OUT212 Output Contact Logic Extra Interface Board 4 OUT201 OUT202 OUT203 OUT204 ...

Page 237: ...perature Preference C F SEL 387 5 and SEL 387 6 Relays only TMPREFB Battery Monitor DC Battery Voltage Level 1 OFF 20 300 Vdc DC1P DC Battery Voltage Level 2 OFF 20 300 Vdc DC2P DC Battery Voltage Level 3 OFF 20 300 Vdc DC3P DC Battery Voltage Level 4 OFF 20 300 Vdc DC4P Breaker 1 Monitor BKR1 Trigger Equation SELOGIC control equation BKMON1 Close Open Set Point 1 max 1 65000 operations B1COP1 kA ...

Page 238: ...A Interrupted Set Point 2 min 0 1 999 0 kA pri B3KAP2 Close Open Set Point 3 max 1 65000 operations B3COP3 kA Interrupted Set Point 3 min 0 1 999 0 kA pri B3KAP3 Breaker 4 Monitor BKR4 Trigger Equation SELOGIC control equation BKMON4 Close Open Set Point 1 max 1 65000 operations B4COP1 kA Interrupted Set Point 1 min 0 1 999 0 kA pri B4KAP1 Close Open Set Point 2 max 1 65000 operations B4COP2 kA In...

Page 239: ...me Current Input IBW3 1 4 characters IBW3 Rename Current Input ICW3 1 4 characters ICW3 Rename Current Input IAW4 1 4 characters IAW4 Rename Current Input IBW4 1 4 characters IBW4 Rename Current Input ICW4 1 4 characters ICW4 Setting Group Selection Select Setting Group 1 SELOGIC control equation SS1 Select Setting Group 2 SELOGIC control equation SS2 Select Setting Group 3 SELOGIC control equatio...

Page 240: ...aracters Enter NA to Null DP3_0 Show Display Point 4 SELOGIC control equation DP4 DP4 Label 1 16 characters Enter NA to Null DP4_1 DP4 Label 0 16 characters Enter NA to Null DP4_0 Show Display Point 5 SELOGIC control equation DP5 DP5 Label 1 16 characters Enter NA to Null DP5_1 DP5 Label 0 16 characters Enter NA to Null DP5_0 Show Display Point 6 SELOGIC control equation DP6 DP6 Label 1 16 charact...

Page 241: ...nter NA to Null DP11_0 Show Display Point 12 SELOGIC control equation DP12 DP12 Label 1 16 characters Enter NA to Null DP12_1 DP12 Label 0 16 characters Enter NA to Null DP12_0 Show Display Point 13 SELOGIC control equation DP13 DP13 Label 1 16 characters Enter NA to Null DP13_1 DP13 Label 0 16 characters Enter NA to Null DP13_0 Show Display Point 14 SELOGIC control equation DP14 DP14 Label 1 16 c...

Page 242: ...Enter NA to Null PLB3 Local Bit LB4 Name 14 characters Enter NA to Null NLB4 Clear Local Bit LB4 Label 7 characters Enter NA to Null CLB4 Set Local Bit LB4 Label 7 characters Enter NA to Null SLB4 Pulse Local Bit LB4 Label 7 characters Enter NA to Null PLB4 Local Bit LB5 Name 14 characters Enter NA to Null NLB5 Clear Local Bit LB5 Label 7 characters Enter NA to Null CLB5 Set Local Bit LB5 Label 7 ...

Page 243: ...Enter NA to Null SLB11 Pulse Local Bit LB11 Label 7 characters Enter NA to Null PLB11 Local Bit LB12 Name 14 characters Enter NA to Null NLB12 Clear Local Bit LB12 Label 7 characters Enter NA to Null CLB12 Set Local Bit LB12 Label 7 characters Enter NA to Null SLB12 Pulse Local Bit LB12 Label 7 characters Enter NA to Null PLB12 Local Bit LB13 Name 14 characters Enter NA to Null NLB13 Clear Local B...

Page 244: ...rs Enter NA to Null SLB16 Pulse Local Bit LB16 Label 7 characters Enter NA to Null PLB16 Sequential Events Recorder Settings SET R Command Trigger Conditions Trigger SER 24 Relay Word bits per SERn equation 96 total SER1 SER2 SER3 SER4 Relay Word Bit Aliases Syntax Relay Word Bit Up to 15 characters Use NA to disable setting ALIAS1 ALIAS2 ALIAS3 ALIAS4 ALIAS5 ALIAS6 ALIAS7 ALIAS8 ALIAS9 ALIAS10 AL...

Page 245: ...PREFIX LMD Address 1 99 ADDR LMD Settling Time 0 30 seconds SETTLE Baud 300 1200 2400 4800 9600 19200 SPEED Data Bits 7 8 BITS Parity Odd Even or None O E N PARITY Stop Bits 1 2 STOP Time out for inactivity 0 30 minutes T_OUT Send auto messages to port Y N AUTO Enable hardware handshaking Y N RTSCTS Fast Operate Enable Y N FASTOP Port 2 SET P 2 Rear Panel EIA 232 With IRIG B Port Protocol SEL LMD ...

Page 246: ...end auto messages to port Y N AUTO Enable hardware handshaking Y N RTSCTS Fast Operate Enable Y N FASTOP Port 4 SET P 4 Front Panel EIA 232 Port Protocol SEL LMD DNP RTDA RTDB for SEL 387 5 and SEL 387 6 Relays only PROTO LMD Prefix PREFIX LMD Address 1 99 ADDR LMD Settling Time 0 30 seconds SETTLE Baud 300 1200 2400 4800 9600 19200 SPEED Data Bits 7 8 BITS Parity Odd Even or None O E N PARITY Sto...

Page 247: ...U10 RTD10TA RTD 11A Type NA PT100 NI100 NI120 CU10 RTD11TA RTD 12A Type NA PT100 NI100 NI120 CU10 RTD12TA Port N SET P N EIA 232 for PROTO RTDB SEL 387 5 and SEL 387 6 Relays only Number of RTDB 0 12 RTDNUMB RTD 1B Type NA PT100 NI100 NI120 CU10 RTD1TB RTD 2B Type NA PT100 NI100 NI120 CU10 RTD2TB RTD 3B Type NA PT100 NI100 NI120 CU10 RTD3TB RTD 4B Type NA PT100 NI100 NI120 CU10 RTD4TB RTD 5B Type ...

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Page 249: ...able Winding 1 O C Elements and Dmd Thresholds Y N EOC1 Y Enable Winding 2 O C Elements and Dmd Thresholds Y N EOC2 Y Enable Winding 3 O C Elements and Dmd Thresholds Y N EOC3 Y Enable Winding 4 O C Elements and Dmd Thresholds Y N EOC4 N Enable Combined O C Elements Y N EOCC N Enable Thermal Element Y N SEL 387 6 Relay only ETHER Y Enable RTDA Element Y N SEL 387 5 and SEL 387 6 Relays only E49A N...

Page 250: ... Winding 2 CT Conn Compensation 0 1 12 W2CTC 11 Winding 3 CT Conn Compensation 0 1 12 W3CTC 0 Winding 4 CT Conn Compensation 0 1 12 W4CTC 0 Winding 1 Line to Line Voltage 1 1000 kV VWDG1 230 Winding 2 Line to Line Voltage 1 1000 kV VWDG2 138 Winding 3 Line to Line Voltage 1 1000 kV VWDG3 13 8 Winding 4 Line to Line Voltage 1 1000 kV VWDG4 13 8 Differential Elements NOTE TAP1 TAP4 are auto set by r...

Page 251: ...CRB N Harmonic Restraint Y N all but SEL 387 0 Relay HRSTR Y Independent Harmonic Blocking Y N IHBL N Restricted Earth Fault Enable 32I SELOGIC control equation E32I 0 Operating Quantity from Wdg 1 Wdg 2 Wdg 3 1 2 3 12 23 123 32IOP 1 Positive Sequence Current Restraint Factor I0 I1 0 02 0 50 a0 0 10 Residual Current Sensitivity Threshold 0 25 15 00 A secondary 5 A 50GP 0 50 0 05 3 00 A secondary 1...

Page 252: ... N 51P1RS Y 51P1 Torque Control SELOGIC control equation 51P1TC 1 Winding 1 Negative Sequence O C Elements NOTE All negative sequence element pickup settings are in terms of 3I2 Neg Seq Def Time O C Level 1 PU OFF 0 25 100 00 A secondary 5 A 50Q11P OFF OFF 0 05 20 00 A secondary 1 A OFF Neg Seq Level 1 O C Delay 0 5 16000 cycles 50Q11D 5 50Q11 Torque Control SELOGIC control equation 50Q11TC 1 Neg ...

Page 253: ... secondary 1 A OFF 50N12 Torque Control SELOGIC control equation 50N12TC 1 Residual Inv Time O C PU OFF 0 5 16 0 A secondary 5 A 51N1P OFF OFF 0 1 3 2 A secondary 1 A OFF Residual Inv Time O C Curve U1 U5 C1 C5 51N1C U2 Residual Inv Time O C Time Dial US 0 5 15 0 IEC 0 05 1 00 51N1TD 1 00 Residual Inv Time O C EM Reset Y N 51N1RS Y 51N1 Torque Control SELOGIC control equation 51N1TC 1 Winding 1 De...

Page 254: ...FF 0 25 100 00 A secondary 5 A 50P23P 0 50 OFF 0 05 20 00 A secondary 1 A 0 10 Phase Inst O C Level 4 PU OFF 0 25 100 00 A secondary 5 A 50P24P 3 50 OFF 0 05 20 00 A secondary 1 A 0 70 Phase Inv Time O C PU OFF 0 5 16 0 A secondary 5 A 51P2P 3 5 OFF 0 1 3 2 A secondary 1 A 0 7 Phase Inv Time O C Curve U1 U5 C1 C5 51P2C U2 Phase Inv Time O C Time Dial US 0 5 15 0 IEC 0 05 1 00 51P2TD 3 50 Phase Inv...

Page 255: ...Y 51Q2 Torque Control SELOGIC control equation 51Q2TC 1 Winding 2 Residual O C Elements Residual Def Time O C Level 1 PU OFF 0 25 100 00 A secondary 5 A 50N21P OFF OFF 0 05 20 00 A secondary 1 A OFF Residual Level 1 O C Delay 0 16000 cycles 50N21D 5 50N21 Torque Control SELOGIC control equation 50N21TC 1 Residual Inst O C Level 2 PU OFF 0 25 100 00 A secondary 5 A 50N22P OFF OFF 0 05 20 00 A secon...

Page 256: ...ary 5 A NDEM2P 1 0 0 1 3 2 A secondary 1 A 0 2 Winding 3 O C Elements Winding 3 Phase O C Elements Phase Def Time O C Level 1 PU OFF 0 25 100 00 A secondary 5 A 50P31P 7 00 OFF 0 05 20 00 A secondary 1 A 1 40 Phase Level 1 O C Delay 0 16000 cycles 50P31D 0 50P31 Torque Control SELOGIC control equation 50P31TC 1 Phase Inst O C Level 2 PU OFF 0 25 100 00 A secondary 5 A 50P32P OFF OFF 0 05 20 00 A s...

Page 257: ... PU OFF 0 25 100 00 A secondary 5 A 50Q31P OFF OFF 0 05 20 00 A secondary 1 A OFF Neg Seq Level 1 O C Delay 0 5 16000 0 cycles 50Q31D 5 50Q31 Torque Control SELOGIC control equation 50Q31TC 1 Neg Seq Inst O C Level 2 PU OFF 0 25 100 00 A secondary 5 A 50Q32P OFF OFF 0 05 20 00 A secondary 1 A OFF 50Q32 Torque Control SELOGIC control equation 50Q32TC 1 Neg Seq Inv Time O C PU OFF 0 5 16 0 A seconda...

Page 258: ...5 C1 C5 51N3C U2 Residual Inv Time O C Time Dial US 0 5 15 0 IEC 0 05 1 00 51N3TD 1 00 Residual Inv Time O C EM Reset Y N 51N3RS Y 51N3 Torque Control SELOGIC control equation 51N3TC 1 Winding 3 Demand Metering Demand Ammeter Time Constant OFF 5 255 min DATC3 15 Phase Demand Ammeter Threshold 0 5 16 0 A secondary 5 A PDEM3P 7 0 0 1 3 2 A secondary 1 A 1 4 Neg Seq Demand Ammeter Threshold 0 5 16 0 ...

Page 259: ...hase Inv Time O C PU OFF 0 5 16 0 A secondary 5 A 51P4P 4 0 OFF 0 1 3 2 A secondary 1 A 0 8 Phase Inv Time O C Curve U1 U5 C1 C5 51P4C U2 Phase Inv Time O C Time Dial US 0 5 15 0 IEC 0 05 1 00 51P4TD 3 00 Phase Inv Time O C EM Reset Y N 51P4RS Y 51P4 Torque Control SELOGIC control equation 51P4TC 1 Winding 4 Negative Sequence O C Elements NOTE All negative sequence element pickup settings are in t...

Page 260: ... 20 00 A secondary 1 A OFF Residual Level 1 O C Delay 0 16000 cycles 50N41D 5 50N41 Torque Control SELOGIC control equation 50N41TC 1 Residual Inst O C Level 2 PU OFF 0 25 100 00 A secondary 5 A 50N42P OFF OFF 0 05 20 00 A secondary 1 A OFF 50N42 Torque Control SELOGIC control equation 50N42TC 1 Residual Inv Time O C PU OFF 0 5 16 0 A secondary 5 A 51N4P OFF OFF 0 1 3 2 A secondary 1 A OFF Residua...

Page 261: ...d overcurrent elements W1 W2 Phase O C Element W1 W2 Phase Inv Time O C PU OFF 0 5 16 0 A secondary 5 A 51PC1P 4 0 OFF 0 1 3 2 A secondary 1 A 0 8 W1 W2 Phase Inv Time O C Curve U1 U5 C1 C5 51PC1C U2 W1 W2 Phase Inv Time O C Time Dial US 0 5 15 0 IEC 0 05 1 00 51PC1TD 3 00 W1 W2 Phase Inv Time O C EM Reset Y N 51PC1RS Y W1 W2 Residual O C Element W1 W2 Residual Inv Time O C PU OFF 0 5 16 0 A secon...

Page 262: ...mal Element SEL 387 6 Relay Only Thermal Model Winding Current 1 2 3 4 12 34 TMWDG 1 Winding LL Voltage 1 1000 kV VWDG 230 Transformer Construction 1 3 XTYPE 1 Transformer Type D Y TRTYPE Y Winding Temp Amb 65 55 THwr 65 Number of Cooling Stages 1 3 NCS 3 Cooling Stage 1 Rating 0 2 5000 0 MVA MCS11 100 0 Cooling Stage 1 Rating 0 2 5000 0 MVA MCS21 100 0 Cooling Stage 1 Rating 0 2 5000 0 MVA MCS31 ...

Page 263: ...L1 OIL2 OIL3 THM3 OIL2 Thermal Function AMB OIL1 OIL2 OIL3 THM4 OIL3 Thermal Function Settings for SEL 387 6 Firmware Revisions R606 and Later Ambient Temperature THM1 THM4 RTD1A RTD12A RTD1B RTD12B AMB THM1 Top Oil Temperature 1 THM1 THM4 RTD1A RTD12A RTD1B RTD12B OIL1 THM2 Top Oil Temperature 2 THM1 THM4 RTD1A RTD12A RTD1B RTD12B OIL2 THM3 Top Oil Temperature 3 THM1 THM4 RTD1A RTD12A RTD1B RTD12...

Page 264: ...s 0 0 100 0 RATL11 3 2 Oil Thermal Time Constant 0 1 20 0 hr OTR11 3 0 Oil Exponent 0 1 5 EXPn11 0 8 Winding Exponent 0 1 5 EXPm11 0 8 Cooling Stage 2 Constants Top Oil Rise Amb 0 1 100 0ºC THor12 50 0 Hot Spot Cond Rise Top Oil 0 1 100 0ºC THgr12 30 0 Ratio Losses 0 0 100 0 RATL12 4 5 Oil Thermal Time Constant 0 1 20 0 hr OTR12 2 0 Oil Exponent 0 1 5 EXPn12 0 9 Winding Exponent 0 1 5 EXPm12 0 9 C...

Page 265: ...tants Top Oil Rise Amb 0 1 100 0ºC THor23 45 0 Hot Spot Cond Rise Top Oil 0 1 100 0ºC THgr23 35 0 Ratio Losses 0 0 100 0 RATL23 6 5 Oil Thermal Time Constant 0 1 20 0 hr OTR23 1 3 Oil Exponent 0 1 5 EXPn23 1 0 Winding Exponent 0 1 5 EXPm23 1 0 Transformer 3 Hot Spot Thermal Time Constant 0 01 2 00 hr Ths3 0 8 Constant to Calc FAA 0 100000 BFFA3 15000 Cooling Stage 1 Constants Top Oil Rise Amb 0 1 ...

Page 266: ...82 F 49T02A OFF RTD 3A Alarm Temperature OFF 32 482 F 49A03A OFF RTD 3A Trip Temperature OFF 32 482 F 49T03A OFF RTD 4A Alarm Temperature OFF 32 482 F 49A04A OFF RTD 4A Trip Temperature OFF 32 482 F 49T04A OFF RTD 5A Alarm Temperature OFF 32 482 F 49A05A OFF RTD 5A Trip Temperature OFF 32 482 F 49T05A OFF RTD 6A Alarm Temperature OFF 32 482 F 49A06A OFF RTD 6A Trip Temperature OFF 32 482 F 49T06A ...

Page 267: ...B Alarm Temperature OFF 32 482 F 49A05B OFF RTD 5B Trip Temperature OFF 32 482 F 49T05B OFF RTD 6B Alarm Temperature OFF 32 482 F 49A06B OFF RTD 6B Trip Temperature OFF 32 482 F 49T06B OFF RTD 7B Alarm Temperature OFF 32 482 F 49A07B OFF RTD 7B Trip Temperature OFF 32 482 F 49T07B OFF RTD 8B Alarm Temperature OFF 32 482 F 49A08B OFF RTD 8B Trip Temperature OFF 32 482 F 49T08B OFF RTD 9B Alarm Temp...

Page 268: ... Timer Pickup 0 999999 cycles S1V3PU 0 000 S1V3 Timer Dropout 0 999999 cycles S1V3DO 0 000 Set 1 Variable 4 SELOGIC control equation S1V4 0 S1V4 Timer Pickup 0 999999 cycles S1V4PU 0 000 S1V4 Timer Dropout 0 999999 cycles S1V4DO 0 000 Set 1 Latch Bit 1 SET Input SELOGIC control equation S1SLT1 0 Set 1 Latch Bit 1 RESET Input SELOGIC control equation S1RLT1 0 Set 1 Latch Bit 2 SET Input SELOGIC con...

Page 269: ... Timer Pickup 0 999999 cycles S2V3PU 0 000 S2V3 Timer Dropout 0 999999 cycles S2V3DO 0 000 Set 2 Variable 4 SELOGIC control equation S2V4 0 S2V4 Timer Pickup 0 999999 cycles S2V4PU 0 000 S2V4 Timer Dropout 0 999999 cycles S2V4DO 0 000 Set 2 Latch Bit 1 SET Input SELOGIC control equation S2SLT1 0 Set 2 Latch Bit 1 RESET Input SELOGIC control equation S2RLT1 0 Set 2 Latch Bit 2 SET Input SELOGIC con...

Page 270: ...ckup 0 999999 cycles S3V3PU 0 000 S3V3 Timer Dropout 0 999999 cycles S3V3DO 0 000 Set 3 Variable 4 SELOGIC control equation S3V4 0 S3V4 Timer Pickup 0 999999 cycles S3V4PU 0 000 S3V4 Timer Dropout 0 999999 cycles S3V4DO 0 000 Set 3 Variable 5 SELOGIC control equation S3V5 0 S3V5 Timer Pickup 0 999999 cycles S3V5PU 0 000 S3V5 Timer Dropout 0 999999 cycles S3V5DO 0 000 Set 3 Variable 6 SELOGIC contr...

Page 271: ...uation S3RLT3 0 Set 3 Latch Bit 4 SET Input SELOGIC control equation S3SLT4 0 Set 3 Latch Bit 4 RESET Input SELOGIC control equation S3RLT4 0 Set 3 Latch Bit 5 SET Input SELOGIC control equation S3SLT5 0 Set 3 Latch Bit 5 RESET Input SELOGIC control equation S3RLT5 0 Set 3 Latch Bit 6 SET Input SELOGIC control equation S3SLT6 0 Set 3 Latch Bit 6 RESET Input SELOGIC control equation S3RLT6 0 Set 3 ...

Page 272: ...ULTR5 0 Close Logic 52A1 IN101 52A2 IN102 52A3 IN103 52A4 0 CL1 CC1 LB4 IN104 CL2 CC2 IN105 CL3 CC3 IN106 CL4 0 ULCL1 TRIP1 TRIP4 ULCL2 TRIP2 TRIP4 ULCL3 TRIP3 TRIP4 ULCL4 0 Event Report Triggering ER 50P11 51P1 51Q1 51P2 51Q2 51P3 Output Contact Logic Standard Outputs OUT101 TRIP1 OUT102 TRIP2 OUT103 TRIP3 OUT104 TRIP4 OUT105 CLS1 OUT106 CLS2 OUT107 CLS3 Output Contact Logic Extra Interface Board...

Page 273: ...Report 1 to LER 1 PRE 4 Nominal Frequency 50 60 Hz NFREQ 60 or 50 Phase Rotation ABC ACB PHROT ABC or ACB Date Format MDY YMD DATE_F MDY Display Update Rate 1 60 seconds SCROLD 2 Front Panel Time out OFF 0 30 minutes FP_TO 16 Group Change Delay 0 900 seconds TGR 3 RTDA Temperature Preference C F SEL 387 5 and SEL 387 6 Relays only TMPREFA F RTDB Temperature Preference C F SEL 387 5 and SEL 387 6 R...

Page 274: ... B2COP1 10000 kA Interrupted Set Point 1 min 0 1 999 0 kA pri B2KAP1 1 2 Close Open Set Point 2 max 1 65000 operations B2COP2 160 kA Interrupted Set Point 2 min 0 1 999 0 kA pri B2KAP2 8 0 Close Open Set Point 3 max 1 65000 operations B2COP3 12 kA Interrupted Set Point 3 min 0 1 999 0 kA pri B2KAP3 20 0 Breaker 3 Monitor BKR3 Trigger Equation SELOGIC control equation BKMON3 TRIP3 TRIP4 Close Open ...

Page 275: ...rm Threshold OFF 0 4294967 kA 2 seconds ISQT OFF Analog Input Labels Rename Current Input IAW1 1 4 characters IAW1 IAW1 Rename Current Input IBW1 1 4 characters IBW1 IBW1 Rename Current Input ICW1 1 4 characters ICW1 ICW1 Rename Current Input IAW2 1 4 characters IAW2 IAW2 Rename Current Input IBW2 1 4 characters IBW2 IBW2 Rename Current Input ICW2 1 4 characters ICW2 ICW2 Rename Current Input IAW3...

Page 276: ...ers Enter NA to Null DP1_1 BREAKER 1 CLOSED DP1 Label 0 16 characters Enter NA to Null DP1_0 BREAKER 1 OPEN Show Display Point 2 SELOGIC control equation DP2 IN102 DP2 Label 1 16 characters Enter NA to Null DP2_1 BREAKER 2 CLOSED DP2 Label 0 16 characters Enter NA to Null DP2_0 BREAKER 2 OPEN Show Display Point 3 SELOGIC control equation DP3 IN103 DP3 Label 1 16 characters Enter NA to Null DP3_1 B...

Page 277: ...nter NA to Null DP8_0 Show Display Point 9 SELOGIC control equation DP9 0 DP9 Label 1 16 characters Enter NA to Null DP9_1 DP9 Label 0 16 characters Enter NA to Null DP9_0 Show Display Point 10 SELOGIC control equation DP10 0 DP10 Label 1 16 characters Enter NA to Null DP10_1 DP10 Label 0 16 characters Enter NA to Null DP10_0 Show Display Point 11 SELOGIC control equation DP11 0 DP11 Label 1 16 ch...

Page 278: ...rs Enter NA to Null SLB1 Pulse Local Bit LB1 Label 7 characters Enter NA to Null PLB1 Local Bit LB2 Name 14 characters Enter NA to Null NLB2 Clear Local Bit LB2 Label 7 characters Enter NA to Null CLB2 Set Local Bit LB2 Label 7 characters Enter NA to Null SLB2 Pulse Local Bit LB2 Label 7 characters Enter NA to Null PLB2 Local Bit LB3 Name 14 characters Enter NA to Null NLB3 MANUAL TRIP 1 Clear Loc...

Page 279: ...Bit LB9 Name 14 characters Enter NA to Null NLB9 Clear Local Bit LB9 Label 7 characters Enter NA to Null CLB9 Set Local Bit LB9 Label 7 characters Enter NA to Null SLB9 Pulse Local Bit LB9 Label 7 characters Enter NA to Null PLB9 Local Bit LB10 Name 14 characters Enter NA to Null NLB10 Clear Local Bit LB10 Label 7 characters Enter NA to Null CLB10 Set Local Bit LB10 Label 7 characters Enter NA to ...

Page 280: ...B15 Set Local Bit LB15 Label 7 characters Enter NA to Null SLB15 Pulse Local Bit LB15 Label 7 characters Enter NA to Null PLB15 Local Bit LB16 Name 14 characters Enter NA to Null NLB16 Clear Local Bit LB16 Label 7 characters Enter NA to Null CLB16 Set Local Bit LB16 Label 7 characters Enter NA to Null SLB16 Pulse Local Bit LB16 Label 7 characters Enter NA to Null PLB16 Sequential Events Recorder S...

Page 281: ...ibuted Network Protocol for details on DNP protocol Port 1 SET P 1 Rear Panel EIA 485 Plus IRIG B Port Protocol SEL LMD DNP RTDA RTDB for SEL 387 5 and SEL 387 6 Relays only PROTO SEL LMD Prefix PREFIX LMD Address 1 99 ADDR LMD Settling Time 0 30 seconds SETTLE Baud 300 1200 2400 4800 9600 19200 SPEED 2400 Data Bits 7 8 BITS 8 Parity Odd Even or None O E N PARITY N Stop Bits 1 2 STOP 1 Time out fo...

Page 282: ...EL LMD DNP RTDA RTDB for SEL 387 5 andSEL 387 6 Relays only PROTO SEL LMD Prefix PREFIX LMD Address 1 99 ADDR LMD Settling Time 0 30 seconds SETTLE Baud 300 1200 2400 4800 9600 19200 SPEED 2400 Data Bits 7 8 BITS 8 Parity Odd Even or None O E N PARITY N Stop Bits 1 2 STOP 1 Time out for inactivity 0 30 minutes T_OUT 5 Send auto messages to port Y N AUTO N Enable hardware handshaking Y N RTSCTS N F...

Page 283: ...100 NI120 CU10 RTD5TA RTD 6A Type NA PT100 NI100 NI120 CU10 RTD6TA RTD 7A Type NA PT100 NI100 NI120 CU10 RTD7TA RTD 8A Type NA PT100 NI100 NI120 CU10 RTD8TA RTD 9A Type NA PT100 NI100 NI120 CU10 RTD9TA RTD 10A Type NA PT100 NI100 NI120 CU10 RTD10TA RTD 11A Type NA PT100 NI100 NI120 CU10 RTD11TA RTD 12A Type NA PT100 NI100 NI120 CU10 RTD12TA Port N SET P N EIA 232 for PROTO RTDB SEL 387 5 and SEL 3...

Page 284: ...ample Port Settings SET P Command SEL 387 0 5 6 Relay Instruction Manual Date Code 20170601 Date________________ RTD 10B Type NA PT100 NI100 NI120 CU10 RTD10TB RTD 11B Type NA PT100 NI100 NI120 CU10 RTD11TB RTD 12B Type NA PT100 NI100 NI120 CU10 RTD12TB ...

Page 285: ...EL ASCII commands and structure are defined in detail in this section Other SEL protocols used for interfacing other intelligent electronic devices for automated communication are described in detail in the appendices Establish Communication Establish communication with the SEL 387 through one of its serial ports by using standard off the shelf software and the appropriate cable connections depend...

Page 286: ...onnectors Any combination of these ports or all of them may be used for relay communication Table 7 2 lists cables that can be purchased from SEL for various communication applications Table 7 1 Serial Port Pin Definitions Pin Number Port 1 Rear EIA 485 Port 2 Rear EIA 232 with IRIG B Port 3 Rear EIA 232 Port 4 Front EIA 232 1 TX Out N C or 5 Vdc N C or 5 Vdc N C 2 TX Out RXD In RXD In RXD In 3 RX...

Page 287: ...en devices for electrical isolation and long distance signal transmission Call the factory for further information on these products The following cable diagrams show several types of EIA 232 serial communications cables These and other cables are available from SEL Contact the factory for more information Table 7 2 SEL 387 Communication Cable Numbers SEL 387 Port Connect to Device gender refers t...

Page 288: ...tc SEL 387 Relay 9 Pin Male D Subconnector D Subconnector 9 Pin Female 2 3 3 5 8 2 5 8 7 RXD TXD TXD RXD GND GND CTS CTS RTS DCD DTR DSR 1 4 6 Pin Func Pin Func Pin Pin Cable C234A DTE Device SEL 387 Relay 9 Pin Male D Subconnector D Subconnector 25 Pin Female 5 7 3 2 9 3 2 1 5 GND GND TXD RXD RXD TXD GND GND CTS DSR DCD DTR 6 8 20 8 4 CTS RTS Pin Func Pin Func Pin Pin Cable C227A DTE Device ...

Page 289: ...D Subconnector D Subconnector 25 Pin Male 5 7 3 7 2 2 20 3 GND GND TXD TXD IN RTS DTR IN RXD RXD OUT 8 8 CTS CD OUT 9 1 GND GND Pin Func Pin Func Pin Pin DCE Device Cable C222 SEL 387 Relay 9 Pin Male D Subconnector D Subconnector 25 Pin Male 5 7 3 7 2 2 20 3 GND GND TXD TXD IN RTS DTR IN RXD RXD OUT 8 8 CTS CD OUT 1 10 5 VDC PWR IN 9 1 GND GND Pin Func Pin Func Pin Pin Modem 5Vdc Powered DCE Devi...

Page 290: ...de Input GND Ground SHIELD Shielded Ground RTS Request to Send CTS Clear to Send DCD Data Carrier Detect DTR Data Terminal Ready DSR Data Set Ready 9 Pin Male D Subconnector D Subconnector 9 Pin Male 2 3 3 4 5 2 4 5 RXD TXD TXD RXD IRIG IRIG GND GND 6 6 IRIG IRIG 7 8 RTS CTS 8 7 CTS RTS Pin Func Pin Func Pin Pin SEL 387 Relay Cable C273A 9 Pin Male D Subconnector D Subconnector 9 Pin Male 2 3 3 5 ...

Page 291: ...ble to receive characters If RTSCTS Y the relay does not send characters until the CTS input is asserted Software Protocol Software protocols consist of standard SEL ASCII SEL Distributed Port Switch LMD SEL Distributed Network Protocol DNP SEL Fast Meter SEL Fast Operate and SEL Compressed ASCII Based on the port PROTOCOL setting the relay activates SEL ASCII SEL LMD or SEL DNP protocol SEL Fast ...

Page 292: ...in progress when XOFF is received and may resume when the relay sends XON 4 You can use an XON XOFF procedure to control the relay during data transmission When the relay receives an XOFF command during transmission it pauses until it receives an XON command If there is no message in progress when the relay receives an XOFF command it blocks transmission of any message presented to its buffer The ...

Page 293: ...endix D Configuration Fast Meter and Fast Operate Commands SEL Compressed ASCII Protocol SEL Compressed ASCII protocol provides compressed versions of some of the relay ASCII commands SEL Compressed ASCII protocol is always available on any serial port The protocol is described in Appendix E Compressed ASCII Commands SEL Unsolicited Sequential Events Recorder SER Protocol SEL Unsolicited Sequentia...

Page 294: ...21 00 Time 21 29 42 829 STATION A FID SEL 387 6 X117 V0 Z001001 D20000419 CID 2001 SELF TESTS W Warn F Fail IAW1 IBW1 ICW1 IAW2 IBW2 ICW2 OS 0 0 0 1 0 1 IAW3 IBW3 ICW3 IAW4 IBW4 ICW4 OS 0 0 0 1 0 1 5V_PS 5V_REG 5V_REG 12V_PS 12V_PS 15V_PS 15V_PS PS 4 93 4 99 5 07 11 90 12 08 14 96 14 90 TEMP RAM ROM A D CR_RAM EEPROM IO_BRD 32 1 OK OK OK OK OK OK Relay Enabled _ RID and TID settings for the active...

Page 295: ...ess levels Figure 7 2 summarizes the access levels prompts and commands available from each access level and commands for moving between access levels The relay responds with Invalid Access Level if a command is entered from an access level lower than the specified access level for the command The relay responds Invalid Command to commands not listed or if a command is not followed by the correct ...

Page 296: ...2 After issuing the 2AC command and entering the password if it is required see PAS Passwords for default factory passwords the relay pulses the ALARM contact and is in Access Level 2 The Access Level 2 prompt appears This is the highest access level All commands listed in this manual for any access level can be executed from Access Level 2 for viewing relay information controlling the breaker and...

Page 297: ...GROUP IRIG METER SER SHOWSET BACCESS DATE EVENT 2ACCESS BREAKER TIME TRIGGER TARGET CEV METER H HISTORY C SER C TARGET F TARGET R TFE TFE C TFE P TFE R THERMAL THERMAL C THERMAL D THERMAL H THERMAL P THERMAL R THERMAL T ID SHOWSET R SHOWSET P TRIGGER TIME STATUS 2ACCESS SHOWSET G SHOWSET BREAKER HISTORY METER IRIG INITIO SER GROUP DATE EVENT TARGET CEV METER H HISTORY C SER C TARGET F TFE TFE C TF...

Page 298: ...sword but will immediately execute the command The following display indicates successful access to Level 2 2AC Enter Password XFMR 1 Date 11 09 96 Time 14 23 41 758 STATION A Level 2 You can use any command from the prompt The relay pulses the ALARM contact for one second after any Level 2 access attempt unless an alarm condition already exists ACC Access Level 1 Access Levels 0 B 2 Use the ACCES...

Page 299: ... will appear in the report as set BRE Enter XFMR 1 Date 06 19 97 Time 21 04 30 973 STATION A BREAKER 1 Int Trips 4 IAW1 0 01 IBW1 0 01 ICW1 0 02 kA pri Ext Trips 15 IAW1 1 04 IBW1 0 50 ICW1 0 16 kA pri Percent Wear POLE1 0 POLE2 0 POLE3 0 BREAKER 2 Int Trips 3 IAW2 59 31 IBW2 0 09 ICW2 0 08 kA pri Ext Trips 14 IAW2 160 91 IBW2 1 70 ICW2 0 33 kA pri Percent Wear POLE1 88 POLE2 0 POLE3 0 BREAKER 3 I...

Page 300: ...access this level unless instructed by the factory or using the R_S command The relay is calibrated at the factory and will not need field calibration Contact the factory if you suspect the relay is not calibrated CEV Compressed Event Access Levels 1 B 2 The SEL 5601 Analytic Assistant software is available for graphical analysis of event reports The CEV command is a compressed no formatting versi...

Page 301: ...he breaker will be closed an automatic message summarizing the close operation will be sent and an Event Report will be created If the main board jumper JMP6B is not in place the relay responds Aborted Breaker Jumper Not in Place CON n Control RBn Access Level 2 This command is used to control the Relay Word bit RBn or Remote Bit n n having a value of 1 to 16 The relay responds with CONTROL RBn Th...

Page 302: ...he currently active setting group Changing the variable is not permitted The GROUP n command at Levels B and 2 designates what the setting group variable is to be n 1 to 6 thereby asking the relay to change to the setting group so designated The relay will only make the change if the setting group selection SELOGIC control equations SS1 through SS6 are not assigned or are not asserted The followin...

Page 303: ...e seven events have occurred since the history was last cleared HIS Enter XFMR 1 Date 6 1 96 Time 01 16 24 STATION A DATE TIME EVENT GRP TARGETS 1 01 06 96 00 18 10 333 TRIP1 1 2 01 04 96 09 08 20 058 TRIG 1 3 01 04 96 08 53 55 429 TRIP3 1 50 A B W3 4 01 01 96 00 18 10 258 TRIP1 1 5 01 01 96 00 18 08 095 TRIP3 1 50 A B W3 6 12 09 95 22 41 33 108 ER 1 7 12 09 95 22 27 47 870 TRIP3 1 50 A B W3 If an...

Page 304: ...unication or not For p 1 the communications protocol will be standard plus DNP3 Level 2 Slave for p X it will be standard with no DNP CONFIG reports nominal frequency phase rotation input current and PT connections The designators abcdef represent the following a the nominal frequency where 0 N A 1 60Hz and 2 50Hz b the phase rotation where 0 N A 1 ABC and 2 ACB c the phase input current scaling w...

Page 305: ...nitoring for a complete description of the metering reports Use the MET XXX n command where n is a positive integer to repeat the MET XXX report n times For example to display a series of eight meter readings type MET 8 Enter If the Analog Input Label settings IAW1 etc have been renamed these will appear in the report as set NOTE Normally it is not necessary to synchronize using this command becau...

Page 306: ...g for Breaker n in order for opening to take place This logic is described in Section 4 Control Logic To open circuit Breaker n by this command type OPE n Enter The prompt Open Breaker n Y N is displayed Then Are you sure Y N is displayed Typing N Enter after either of the above prompts aborts the opening operation with the message Command Aborted If both questions are answered Y Enter the breaker...

Page 307: ... jumper information With the Password jumper in place issue the PAS x command at Access Level 2 The relay will prompt for a new password and a confirmation of the new password Passwords may include up to 12 characters See Table 7 5 for valid characters Upper and lowercase letters are treated as different characters Strong passwords consist of 12 characters with at least one special character or di...

Page 308: ... 0 after a certain inactivity time dependent on the SET P setting T_OUT QUI Enter XFMR 1 Date 02 01 93 Time 15 15 32 161 STATION A RES RESET51 Reset Inverse Time O C Elements Access Level 2 The RESET51 command clears the inverse time overcurrent element accumulators phase negative sequence and residual for all four windings It also clears the four combined overcurrent phase and residual inverse ti...

Page 309: ...2 CLS3 Deasserted SER C Clear Sequential Events Recorder Access Levels 1 B 2 Clear the sequential event records from relay memory with the SER C command The process can take up to 30 seconds under normal operation or longer if the relay is busy processing a fault or protection logic SER C Enter Clear the SER Are you sure Y N Y Enter Clearing Complete SET Edit Group 1 6 Settings Access Level 2 Conf...

Page 310: ...s each entry to ensure that it is within the allowable input range If it is not an Out of Range message is generated and the relay prompts for the setting again When you have made all the necessary setting changes it is not necessary to scroll through the remaining settings Type END Enter at the next setting prompt to display the new settings and request confirmation Answer Y Enter to the confirma...

Page 311: ...tting name with which to begin The default is the first setting TERSE eliminates the display of the global settings at the end of the setting procedure The command will function properly if just TE is entered instead of the full word The SET G procedure works just like the SET procedure Table 7 6 lists the editing keys that you can use with the SET command Refer to Section 6 Setting the Relay for ...

Page 312: ...ports and SER for more details on default settings and data retrieval Table 7 7 Settings for Each Communication Port PROTO protocol can be SEL LMD DNP RTDA or RTDB PREFIX If PROTO is LMD prefix can be or ADDR If PROTO is LMD ADDR can be any integer 1 through 99 SETTLE If PROTO is LMD the settling time can be 0 to 30 seconds SPEED baud can be set to 300 1200 2400 4800 9600 or 19200 BITS data can be...

Page 313: ...the Control key and press X Settings cannot be entered or modified with this command Change settings with the SET command from Access Level 2 Refer to Section 6 Setting the Relay for information on all settings The following example demonstrates the report for the SHO command SHO Enter Group 1 RID XFMR 1 TID STATION A E87W1 Y E87W2 Y E87W3 Y E87W4 N EOC1 Y EOC2 Y EOC3 Y EOC4 N EOCC N ETHER Y E49A ...

Page 314: ...ess RETURN to continue DATC3 15 PDEM3P 1 40 QDEM3P 0 20 NDEM3P 0 20 TMWDG 1 VWDG 230 00 XTYPE 3 TRTYPE Y THwr 65 NCS 1 MCS11 100 0 DTMP 15 TRDE 0 NTHM 2 AMB THM1 OIL1 THM2 TOT1 100 TOT2 100 HST1 200 HST2 200 FAAL1 50 00 FAAL2 50 00 RLOLL 50 00 TLOLL 50 00 CSEP1 15 ILIFE 180000 EDFTC Y TDURD 9 000 CFD 60 000 TR1 50P11T 51P1T 51Q1T OC1 LB3 TR2 51P2T 51Q2T OC2 TR3 50P31 51P3T OC3 TR4 87R 87U TR5 0 UL...

Page 315: ...with this command Change settings with the SET G command from Access Level 2 Refer to Section 6 Setting the Relay for information on all settings The following example demonstrates the report for the SHO G command SHO G Enter LER 15 PRE 4 NFREQ 60 PHROT ABC DATE_F MDY SCROLD 2 FP_TO 16 TGR 3 TMPREFA F TMPREFB F DC1P OFF DC2P OFF DC3P OFF DC4P OFF BKMON1 TRIP1 TRIP4 B1COP1 10000 B1KAP1 1 2 B1COP2 1...

Page 316: ... CLB3 RETURN SLB3 PLB3 TRIP NLB4 MANUAL CLOSE 1 CLB4 RETURN SLB4 PLB4 CLOSE NLB5 CLB5 SLB5 PLB5 NLB6 CLB6 SLB6 PLB6 NLB7 CLB7 SLB7 PLB7 NLB8 CLB8 SLB8 PLB8 NLB9 CLB9 SLB9 PLB9 NLB10 CLB10 SLB10 PLB10 NLB11 CLB11 SLB11 PLB11 NLB12 CLB12 SLB12 PLB12 NLB13 CLB13 SLB13 PLB13 NLB14 CLB14 SLB14 PLB14 NLB15 CLB15 SLB15 PLB15 NLB16 CLB16 SLB16 PLB16 SCEUSE 48 2 GBLCHK D03C SHO P Show Port Settings Access ...

Page 317: ...ntial Events Recorder settings The syntax of the SHO R command follows SHO R Setting Enter Setting specifies the setting name with which to begin The default is the first setting Settings cannot be entered or modified with this command Change settings with the SET R command from Access Level 2 Refer to Section 6 Setting the Relay for information on all settings Following is an example of the displ...

Page 318: ...he STATUS report format appears below XFMR 1 Date 04 21 00 Time 21 29 42 829 STATION A FID SEL 387 6 X117 V0 Z001001 D20000419 CID 2001 SELF TESTS W Warn F Fail IAW1 IBW1 ICW1 IAW2 IBW2 ICW2 OS 0 0 0 1 0 1 IAW3 IBW3 ICW3 IAW4 IBW4 ICW4 OS 0 0 0 1 0 1 5V_PS 5V_REG 5V_REG 12V_PS 12V_PS 15V_PS 15V_PS PS 4 93 4 99 5 07 11 90 12 08 14 96 14 90 TEMP RAM ROM A D CR_RAM EEPROM IO_BRD 32 1 OK OK OK OK OK O...

Page 319: ...0 51 1 0 0 0 0 0 0 0 Refer to Section 4 Control Logic for a list of the Relay Word and the corresponding rows TAR F n Show Relay Word Targets on Front Panel LEDs Access Levels 1 B 2 The TARGET F command works like the TARGET command but it also remaps the second row of target LEDs on the front panel to follow the default row This may be useful for example in testing situations where a display on t...

Page 320: ...fault count Simple I2t calculation for each monitored current input There are various choices for the TFE command listed briefly below Refer to Section 5 Metering and Monitoring for a complete description of the through fault event reports THE Thermal Report SEL 387 6 Relay only Access Levels 1 B 2 The THERM command displays temperature inputs thermal event reports hourly profile data or daily pro...

Page 321: ...at any time you want e g testing or commissioning The event type is recorded as TRIG any time the TRI command is issued Table 7 9 THE Command Choices THE Displays a thermal monitor report that indicates the present thermal status of the transformer THE C Clears the hourly profile daily profile and thermal event data archives THE D x y Retrieves daily profile data from day x to day y If x and y are...

Page 322: ...rs Installing and removing certain main board jumpers affects execution of some commands Table 7 11 lists all jumpers you should be concerned with and their effects Table 7 10 Commands With Alarm Conditions Command Condition 2AC Entering Access Level 2 or Three wrong password attempts into Access Level 2 ACC Three wrong password attempts into Access Level 1 BAC Entering Breaker Access Level or Thr...

Page 323: ...resently in the relay DAT m d y Enter date in this manner if Date Format setting DATE_F MDY DAT y m d Enter date in this manner if Date Format setting DATE_F YMD EVE n Show standard event report number n with 1 4 cycle resolution Attach S8 for 1 8 cycle resolution EVE D n Show digital data event report number n with 1 4 cycle resolution Attach S8 for 1 8 cycle resolution EVE DIF1 n Show differenti...

Page 324: ...Shows active group if n is not specified SHO G Show relay global settings SHO P Show port settings and identification of port to which user is connected SHO P n Show port settings for port n n 1 2 3 4 SHO R Show Sequential Events Recorder SER settings STA Show relay self test status STA C Clear relay status report from memory and reboot the relay TAR n k Show Relay Word row n status n 0 through 41...

Page 325: ...AC Enter Access Level 2 If the main board password jumper JMP6A is not in place the relay prompts for the entry of the Access Level 2 password in order to enter Access Level 2 BRE Breaker report shows trip counters trip currents and wear data for up to four breakers BRE R n Reset trip counters trip currents and wear data for breaker n n 1 2 3 4 A BRE W n Pre set the percent contact wear for each p...

Page 326: ... the 24 RTD inputs SEL 387 5 and SEL 387 6 Relays only OPE n Assert the OCn Relay Word bit Used to open breaker n if OCn is assigned to an output contact JMP6B has to be in place to enable this command PUL y k Pulse output contact y y OUT101 OUT107 OUT2XX OUT3XX and ALARM Enter number k to pulse for k seconds k 1 to 30 seconds otherwise pulse time is 1 second JMP6B has to be in place to enable thi...

Page 327: ...emperature inputs received from an SEL 2032 an SEL 2030 or an SEL 2020 Communications Processor TIM Show or set time 24 hour time Show time presently in the relay by entering just TIM Example time 22 47 36 is entered with command TIM 22 47 36 TRI Trigger an event report Access Level 2 Commands The Access Level 2 commands primarily allow the user to change settings or operate relay parameters and o...

Page 328: ... latest event reports HIS C Clear the brief summary and corresponding standard event reports ID Display variety of identification and configuration information about the relay INI INITIO command reports the number and type of I O boards in the relay In Access Level 2 confirms that I O boards are correct IRI Force synchronization attempt of internal relay clock to IRIG B time code input MET k Displ...

Page 329: ... settings If parameter n is not entered setting editing starts at the first setting SET G Change global settings SET P n Change port settings SET R Change Sequential Events Recorder SER settings SHO n Show relay group n settings Shows active group if n is not specified SHO G Show relay global settings SHO P Show port settings and identification of port to which user is connected SHO P n Show port ...

Page 330: ...x to day y If x and y are omitted retrieves entire profile data If x or y is omitted retries profile from day x y to present THE P n Loads preset value of accumulated insulation loss of life THE R Clears the hourly profile daily profile and thermal event data archives and resets the total loss of life values THE T Displays the four temperature inputs received from an SEL 2032 an SEL 2030 or an SEL...

Page 331: ... on the front panel the relay waits a time period specified in the SET G setting FP_TO Front Panel Time Out and then takes the following actions The front panel LCD display resets to the default display The front panel access level reverts to Access Level 1 The LCD backlighting is turned off Any routine being executed via a front panel command is interrupted The target LEDs lower row revert to the...

Page 332: ...lled Menu choices on the LCD display are listed horizontally on the second line The first character of the menu choice is underlined The left and right arrow buttons move the underline to the adjacent menu selection Once the underline indicates your selection use the SELECT pushbutton to proceed Target LEDs The target LEDs are an indication of what the relay has detected on the power system and ho...

Page 333: ... is correct the relay will change to the higher level and permit you to perform that level s commands If it is incorrect the relay will declare an Invalid Password and allow another attempt After three incorrect attempts the relay will pulse the ALARM contact for one second and the front panel will exit the command you are trying to access Pushbuttons Eight multifunction pushbuttons control the fr...

Page 334: ... demand information or to RESET the demand accumulators Use the right left arrows and SELECT to choose If RESET is chosen the relay will prompt for a Yes No verification of the choice Use the right left arrows and SELECT to choose If DISPLAY is chosen the relay will scroll through the demand values If the Analog Input Label settings IAW1 etc have been renamed these will appear in the displays as s...

Page 335: ... TARget BKR breaker RESET51 or LCD These perform the same functions as the serial port commands DAT TIM TAR BRE and RES Use any arrow key and SELECT to choose the function These OTHER subfunctions are discussed below in alphabetical order BKR This function displays the breaker monitor accumulator values for internal and external trips the accumulated interrupted currents by pole the percent contac...

Page 336: ...l mode The rotating display will then appear and the scroll mode reminder screen will appear every eight seconds for one second as a reminder that the display is in Scroll Lock Control mode Stop Scrolling Lock When in the Scroll Lock Control mode press the SELECT key to stop display rotation Scrolling can be stopped on any of the display point screens While rotation is stopped the active display i...

Page 337: ...more bits are asserted than will fit in the display the right left arrow keys can be used to see the off screen names Push CANCEL to return to the OTHER main menu Push EXIT to return to the default display TIME This command works like the DATE command above and is equivalent to the TIME serial port command When selected a two line display appears with the current time on the first line and a promp...

Page 338: ...de we can only observe the value The SELECT pushbutton acts like a down arrow to move to the next setting The up down arrows themselves can be used to move within the list of settings In the Set mode we can choose to change the value by pushing SELECT An underscore will appear under the first character of the value If it has discrete values like LER the up down arrows can be used to scroll through...

Page 339: ... new value push SELECT to enter the change When the complete list of settings has been shown or set the display returns to the menu level of selection of which section to Set or Show CANCEL can also be used to move to this level from within the section of settings EXIT in the Set mode brings the display to a Save Changes Y N selection point In the Show mode it returns to the default display PASSWO...

Page 340: ... of settings In the Set mode we can choose to change the value by pushing SELECT An underscore will appear under the first character of the value If it has discrete values like PROTO the up down arrows can be used to scroll through the available choices If it is a numerical variable the digits are changed one at a time using the right left arrows to move to the digit and the up down arrows to sele...

Page 341: ...itch The local bit associated with this disabled local control switch is then fixed at logical 0 Table 8 1 Correspondence Between Local Control Switch Positions and Label Settings Switch Position Label Setting Setting Definition Logic State not applicable NLBn Name of Local Control Switch not applicable ON SLBn Set Local bit LBn logical 1 OFF CLBn Clear Local bit LBn logical 0 MOMENTARY PLBn Pulse...

Page 342: ... and scroll to the next set local control switch The MANUAL TRIP 1 RETURN TRIP and MANUAL CLOSE 1 RETURN CLOSE switches are both OFF MOMENTARY switches see Figure 8 4 There are no more local control switches in the factory default settings Press the right arrow pushbutton and scroll to the Output Contact Testing function Local Bit Label Settings Function LB3 NLB3 MANUAL TRIP 1 trips breaker and dr...

Page 343: ...essing interval 1 4 cycle long enough to assert the corresponding local bit LB3 to logical 1 and then returns to the RETURN position local bit LB3 deasserts to logical 0 again On the display the MANUAL TRIP 1 switch shows in the TRIP position for two seconds long enough to be seen and then it returns to the RETURN position The MANUAL CLOSE 1 switch is an OFF MOMENTARY type switch like the MANUAL T...

Page 344: ...enu EXIT will abort the command and return to the default display If Close is selected the next screen prompts for the breaker Bk1 to Bk4 to be closed Use the right left arrow keys and SELECT to choose for example Bk1 The relay then asks Close Bkr 1 Yes No Use the right left arrow keys and SELECT to choose If Yes the relay asserts the CC1 Relay Word bit If CC1 has been assigned to the CL1 Close Lo...

Page 345: ...st button TARGET RESET LAMP TEST has no secondary function except as a HELP key explained earlier under the SET primary function CANCEL The CANCEL pushbutton returns the display to the previous menu within a primary function Use the CANCEL pushbutton to go back after issuing a SELECT If there is no previous menu the default display is shown If the CANCEL pushbutton is pushed while the relay is in ...

Page 346: ...d by Differential Elements 1 2 or 3 respectively These correspond essentially to Phases A B and C Thus LEDA LEDB and LEDC are factory set to indicate either an overcurrent or differential selection of their respective phases as the ones involved in a fault They are therefore labeled as FAULT TYPE LEDs It is probably best to leave these settings in place when the relay is in service so that observe...

Page 347: ...s display point setting DPn n 1 through 16 controls the display of corresponding complementary text settings DPn_1 displayed when DPn logical 1 DPn_0 displayed when DPn logical 0 Make each text setting through the serial port using the command SET G View these text settings using the serial port command SHO G These text settings are displayed in pairs on the SEL 387 front panel display in rotation...

Page 348: ...d input IN102 is energized when the 52a circuit breaker auxiliary contact is closed resulting in DP2 IN102 logical 1 This results in the display of corresponding text setting DP2_1 on the front panel display Circuit Breaker Open The optoisolated input IN102 is de energized when the 52a circuit breaker auxiliary contact is open resulting in DP2 IN102 logical 0 Corresponding text setting DP2_0 is no...

Page 349: ...edded three character sequence the mnemonic text and a postlabel if needed The format for a same line Display Point setting for the deasserted state logical 0 is DPn_0 XXX 51nnP YYY or DPn_0 XXX kk YYY For the asserted state logical 1 replace DPn_0 with DPn_1 Table 8 4 shows the time overcurrent element settings resolution and the maximum label characters The maximum number of label characters in ...

Page 350: ...N1P 51P2P 51Q2P 51N2P 51NN1P 51NN2P 51NN3P The relay shows a dynamic display for these overcurrent element pickup settings in either a dual line presentation or a same line presentation Dual Line Setting Example Enter the following settings for a dual line display DP1_0 Brkr 1 Trips at DP2_0 51P1P DP1 0 DP2 0 Table 8 4 Dynamic Display Same Line Overcurrent Elements Setting Setting Displayed Displa...

Page 351: ...as previously programmed to show circuit breaker status Enter the following settings for a same line display with nine label characters DP2_0 Neut 1 12 Ap DP2 0 The following appears on the front panel display where designates the primary value of the 51NN1P setting 51NN1P multiplied by CTRN1 The first Display Point on this display was previously programmed to show circuit breaker status Display M...

Page 352: ...le 8 5 Dynamic Display Mnemonics Sheet 1 of 2 Mnemonic Data IAW1DEM IAW1 demand current IBW1DEM IBW1 demand current ICW1DEM ICW1 demand current 3I2W1DEM 3I2W1 demand current IRW1DEM IRW1 demand current IAW1PK IAW1 peak demand current IBW1PK IBW1 peak demand current ICW1PK ICW1 peak demand current 3I2W1PK 3I2W1 peak demand current IRW1PK IRW1 peak demand current IAW2DEM IAW2 demand current IBW2DEM ...

Page 353: ...ny of the display point screens or on the current meter display screen While rotation is stopped the active display is updated continuously so that current or display point changes can be seen If no button is pressed for eight seconds the reminder message will appear for one second followed by the active screen WEARBB1 Bkr1 B phase wear monitor WEARCB1 Bkr1 C phase wear monitor INTTRB2 Bkr2 intern...

Page 354: ... Single Step From the Scroll Locked state single step through the display screens by pressing the SELECT pushbutton twice Wait for the first press to display the next screen as the active display then press the SELECT pushbutton a second time to freeze scrolling Exit Press the EXIT pushbutton to leave Scroll Lock Control and return the rotating display to normal operation Scroll lock ON SELECT to ...

Page 355: ...12 3 12 3 12 3 I1F2 I2F2 I3F2 12 3 12 3 12 3 I1F5 I2F5 I3F5 12 3 12 3 12 3 IAW1 1234 Amp IBW1 1234 Amp IAW1 123 1 A sec 123 12 IBW1 123 1 A sec 123 12 ICW1 123 1 A sec 123 12 3I1W1 123 1 A sec 123 12 3I2W1 123 1 A sec 123 12 IRW1 123 1 A sec 123 12 IAW1 DEM 1234 IBW1 DEM 1234 ICW1 DEM 1234 3I2W1 DEM 1234 IRW1 DEM 1234 Last Reset From mmddyy hh mm ss IAW1 PK 1234 mmddyy hh mm ss IBW1 PK 1234 mmddyy...

Page 356: ...n event number m group number If secondary currents 99 9 drop the decimal place Summary Data of All Events in History Archive Current Data Display Only if Full Event Record Is Still Stored in Relay No Fault Data EVENT DATA Next Event n DATE mm dd yy TME hh mm ss sss n EVENT event type n GROUP m n TARGETS asserted tars n W1 A B C 12 3 12 3 12 3 n W2 A B C 12 3 12 3 12 3 n W3 A B C 12 3 12 3 12 3 n ...

Page 357: ...enu and Display Structure If JMP6A is not installed OTHER BUTTON DATE TIME TAR BKR RESET51 LCD Bkr Monitor Bk1 Bk2 Bk3 Bk4 Breaker W1 DISPLAY RESET Reset Bkr W1 Yes No SELECT PASSWORD ABCDEF P1 999in 12345kA 999ex 12345kA P2 999in 12345kA 999ex 12345kA P3 999in 12345kA 999ex 12345kA wear P1 P2 P3 100 100 100 default display Last Reset From mmddyy hh mm ss ...

Page 358: ...rt 1 Set Show Save Changes Yes No Exit Settings Yes No SELECT PASSWORD ABCDEFG Set PORT 1 help message Show PORT 1 help message subglobal title SELECT subglobal title SELECT Set GLOBAL help message Show GLOBAL help message Set PORT 1 label value Show PORT 1 label value subglobal title label value subglobal title label value subglobal title label value subglobal title label value subglobal title su...

Page 359: ...ts stored in nonvolatile memory depends on the LER setting as follows The number of events saved will be fewer if mixed lengths e g LER 60 for 3 event reports and then changed to LER 30 are stored together or if the relay is subjected to frequent power down power up cycles If the relay nonvolatile memory is full and another event is triggered the latest event report will overwrite the oldest event...

Page 360: ...ng a circuit breaker e g setting OUT101 TRIP1 SELOGIC control equation settings TRn initiate the Trip Logic and control the assertion of Relay Word bits TRIPn see Figure 4 7 The Relay Word bit OCm m 1 2 3 4 initiated by the Open breaker m serial port command OPE m or the front panel CNTRL Open command normally would be assigned to TRm Similarly Relay Word bits CLSm m 1 2 3 4 would be assigned to a...

Page 361: ...y be in the relay before testing the output contacts with the PUL command Failure to do so may result in some or all of the existing reports being overwritten when PUL commands are issued The sole function of the TRIGGER serial port command is to generate standard 15 30 or 60 cycle event reports primarily for testing purposes Simply type TRI Enter to execute the command See Section 7 Serial Port C...

Page 362: ...Event Report Triggering on page 9 2 The order of precedence for listing the event type in the summary is TRIP CLOSE ER PULSE TRIG as implied by Table 9 1 If more than one type of report trigger occurs within the same report period the type of highest precedence will be shown in the Event field of the report summary Targets The target field shows all front panel targets that were illuminated at the...

Page 363: ...ase currents for each of the four winding inputs as well as the status of the eight digital outputs and six optoisolated inputs Use the EVENT command to retrieve winding event reports There are several options to customize the report format The general command format is EVE n Sx Ly w parameters in are optional Refer to Figure 9 2 for an example winding event report This example event report displa...

Page 364: ...ng Event Report The trigger row includes a character following immediately after the last analog column to indicate the trigger point A character following immediately after the last analog column denotes that the designated row was used for the Event Summary currents The character takes precedence over the character when both conditions occur for the same row Table 9 2 summarizes the event report...

Page 365: ...command Table 9 3 Winding Event Report Output and Input Columns Column Heading Symbol Definition All All indication deasserted OUT 12 1 2 b Output contact OUT101 asserted Output contact OUT102 asserted Both OUT101 and OUT102 asserted OUT 34 3 4 b Output contact OUT103 asserted Output contact OUT104 asserted Both OUT103 and OUT104 asserted OUT 56 5 6 b Output contact OUT105 asserted Output contact ...

Page 366: ...23 4 Figure 9 3 Example Digital Event Report The trigger row includes a character following immediately after the last digital column to indicate the trigger point A character following immediately after the last digital column denotes that the designated row was used for the Event Summary currents The character takes precedence over the character when both conditions occur for the same row Table ...

Page 367: ...T r 1 51PC1 asserted 51PC1T asserted Timing to reset 51PC1RS Y Timing to reset after 51PC1T assertion 51PC1RS N 51PC1R asserted 51NC1 p T r 1 51NC1 asserted 51NC1T asserted Timing to reset 51NC1RS Y Timing to reset after 51NC1T assertion 51NC1RS N 51NC1R asserted 51PC2 p T r 1 51PC2 asserted 51PC2T asserted Timing to reset 51PC2RS Y Timing to reset after 51PC2T assertion 51PC2RS N 51PC2R asserted ...

Page 368: ...34 3 4 b NDEM3 asserted NDEM4 asserted NDEM3 and NDEM4 asserted DEM Q12 1 2 b QDEM1 asserted QDEM2 asserted QDEM1 and QDEM2 asserted DEM Q34 3 4 b QDEM3 asserted QDEM4 asserted QDEM3 and QDEM4 asserted OUT 12 1 2 b Output contact OUT101 asserted Output contact OUT102 asserted Both OUT101 and OUT102 asserted OUT 34 3 4 b Output contact OUT103 asserted Output contact OUT104 asserted Both OUT103 and ...

Page 369: ...3 12 123 12 123 12 123 12 123 12 123 12 123 12 123 12 123 12 123 12 123 12 123 12 123 12 Event TRIP1 TRIP2 TRIP3 TRIP4 TRIP5 Targets TRIP INST 87 1 87 2 87 3 50 51 A B C N W1 W2 W3 W4 Winding 1 Currents A Sec ABCPQN 123 4 123 4 123 4 123 4 123 4 123 4 Winding 2 Currents A Sec ABCPQN 123 4 123 4 123 4 123 4 123 4 123 4 Winding 3 Currents A Sec ABCPQN 123 4 123 4 123 4 123 4 123 4 123 4 Winding 4 Cu...

Page 370: ...l 87 1 R U b 87R1 asserted 87U1 asserted 87R1 and 87U1 asserted Differential 87 2 R U b 87R2 asserted 87U2 asserted 87R2 and 87U2 asserted Differential 87 3 R U b 87R3 asserted 87U3 asserted 87R3 and 87U3 asserted Differential 87B 1 1 87BL1 asserted 87BL1 not asserted Differential 87B 2 1 87BL2 asserted 87BL2 not asserted Differential 87B 3 1 87BL3 asserted 87BL3 not asserted Differential HB 1 2 5...

Page 371: ...it 2 Latched Set 2 LT 34 3 4 b Latch Bit 3 Latched Latch Bit 4 Latched Latch Bit 3 and Latch Bit 4 Latched Set 3 V1 V2 V3 V4 V5 V6 V7 V8 p T d S3Vn asserted timing to output S3VnT asserted timed out S3Vn asserted S3VnT asserted S3Vn deasserted timing to reset RB 12 1 2 b RB1 asserted RB2 asserted RB1 and RB2 asserted RB 34 3 4 b RB3 asserted RB4 asserted RB3 and RB4 asserted RB 56 5 6 b RB5 assert...

Page 372: ...mat The general command format is EVE R n Sx Ly w parameters in are optional Refer to Figure 9 5 for an example raw winding event report This example event report displays rows of information each quarter cycle and was retrieved with the EVE R S4 Enter command The raw event report always shows 1 5 cycles of pretrigger data in this case six samples instead of four IN 12 1 2 b IN101 asserted IN102 a...

Page 373: ... Targets TRIP INST 87 1 87 2 87 3 50 51 A B C N W1 W2 W3 W4 Winding 1 Currents A Sec ABC 123 4 123 4 123 4 Winding 2 Currents A Sec ABC 123 4 123 4 123 4 Winding 3 Currents A Sec ABC 123 4 123 4 123 4 Winding 4 Currents A Sec ABC 123 4 123 4 123 4 Figure 9 5 Example Raw Winding Event Report The trigger row includes a character following immediately after the last analog column to indicate the trig...

Page 374: ... 7 shows how the event report current column data can be converted to phasor rms values IBW4 Current measured by Winding 4 input channel IB Amps secondary ICW4 Current measured by Winding 4 input channel IC Amps secondary Table 9 8 Raw Winding Event Report Outputs and Inputs Column Heading Symbol Definition All All indication deasserted OUT 12 1 2 b Output contact OUT101 asserted Output contact OU...

Page 375: ...hod of taking the square root of the sum of the squares of the samples the magnitude of the phasor can be extracted Since the actual sample values have been divided by the square root of two multiplied by 1 sqrt 2 in the drawing before being entered into the report column no further adjustment is needed after doing the magnitude calculation In the example in Figure 9 6 successive pairs of samples ...

Page 376: ...alue from one quarter cycle before is used as the Imaginary Axis or Y component Plotting the components as shown and noting that the angle of the phasor is Arctan Y X the complete phasor quantity can be derived and compared with other current phasors calculated from other current pairs selected from the same two rows of the Event Report In Figure 9 7 at the present sample the phasor rms current va...

Page 377: ... Event Report Row Triggering and ALIAS Settings The relay triggers generates a row in the SER event report for any change of state in any one of the elements listed in the SER1 SER2 SER3 or SER4 trigger settings Use port command SHO R to view the settings or SET R to set them The factory default settings are SER1 IN101 IN102 IN103 IN104 IN105 IN106 SER2 OUT101 OUT102 OUT103 OUT104 OUT105 OUT106 OU...

Page 378: ...is made as follows SER1 IN101 IN102 IN103 IN104 IN105 IN106 The relay displays the settings as SER1 IN101 IN102 IN103 IN104 IN105 IN106 Retrieving SER Event Report Rows The latest 512 rows of the SER event report are stored in nonvolatile memory Row 1 is the most recently triggered row and row 512 is the oldest These lines are accessed with the SER command in the following ways shown in Table 9 9 ...

Page 379: ...umber SER 3 30 96 If SER is entered with one date following it date 3 30 96 in this example all the rows on that date are displayed if they exist They display with the oldest row at the beginning top of the report and the latest row at the end bottom of the report for the given date Chronological progression through the report is down the page and in descending row number SER 2 17 96 3 23 96 If SE...

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Page 381: ...d Tools Test Features Provided by the Relay The following features will assist you during relay testing For more information on these features and commands see Section 7 Serial Port Communications and Commands Table 10 1 Features to Use to Test the Relay METER Command The METER command shows the currents presented to the relay in primary values Compare these quantities against other devices of kno...

Page 382: ...n test the input module two different ways Measure the outputs from the input module with an accurate voltmeter and compare the readings to accurate instruments in the relay input circuits or Replace the ribbon cable press the front panel METER pushbutton and compare the relay readings to other accurate instruments in the relay input circuits Figure 10 1 Low Level Test Interface Test Methods Test ...

Page 383: ...contact closes Programmable contacts can be changed to a or b contacts with a solder jumper Refer to Section 2 Installation for jumper locations Using contact operation as an indicator you can measure element operating characteristics stop timers etc Tests in this section assume an a output contact Sequential Events Recorder SER To test using this method set the SER to trigger for the element unde...

Page 384: ...isfactory condition Method Inspect the instrument for physical damage such as dents or rattles Step 2 Purpose Verify requirements for relay logic inputs control power voltage level and voltage and current inputs Method Refer to the information sticker on the rear panel of the relay Figure 10 2 provides an example Check the information on this sticker before applying power to the relay or starting ...

Page 385: ...e to the relay and start Access Level 0 communications Method Apply control voltage to the relay The enable target EN LED should illuminate If not be sure that power is present Type Enter from your terminal to get the Access Level 0 response from the relay The prompt should appear indicating that you have established communications at Access Level 0 The ALARM relay should pull in holding its b con...

Page 386: ...T Y W3CT Y W4CT Y CTR1 120 CTR2 240 CTR3 400 CTR4 400 MVA 100 0 ICOM Y W1CTC 11 W2CTC 11 W3CTC 0 VWDG1 230 00 VWDG2 138 00 VWDG3 13 80 TAP1 2 09 TAP2 1 74 TAP3 10 46 O87P 0 3 SLP1 25 SLP2 50 IRS1 3 0 U87P 10 0 PCT2 15 PCT5 35 TH5P OFF IHBL N E32I 0 Press RETURN to continue 50P11P 20 00 50P11D 5 00 50P11TC 1 50P12P OFF 50P13P 0 50 50P14P 4 00 51P1P 4 00 51P1C U2 51P1TD 3 00 51P1RS Y 51P1TC 1 50Q11P...

Page 387: ... 50P23 50P33 ULTR5 0 52A1 IN101 52A2 IN102 52A3 IN103 52A4 0 CL1 CC1 LB4 IN104 CL2 CC2 IN105 CL3 CC3 IN106 CL4 0 ULCL1 TRIP1 TRIP4 ULCL2 TRIP2 TRIP4 ULCL3 TRIP3 TRIP4 ULCL4 0 ER 50P11 51P1 51Q1 51P2 51Q2 51P3 OUT101 TRIP1 OUT102 TRIP2 OUT103 TRIP3 OUT104 TRIP4 Press RETURN to continue OUT105 CLS1 OUT106 CLS2 OUT107 CLS3 OUT201 0 OUT202 0 OUT203 0 OUT204 0 OUT205 0 OUT206 0 OUT207 0 OUT208 0 OUT209...

Page 388: ...ET F command to display the appropriate output elements Verify that the connected circuitry operates as expected Inputs Step 1 Purpose Verify that logic inputs assert when control voltage is applied across the respective terminal pair Method a Set the target LEDs to display the level sensitive inputs by typing TAR F IN101 Enter The bottom row of the front panel LEDs will follow logic inputs IN101 ...

Page 389: ...CTR1 Enter displays the CT ratios for each winding Ctrl X cancels scrolling the displayed line currents should be the applied current 120 amperes 3 12 amperes Step 3 Purpose Verify phase rotation Method a Verify that residual IR and negative sequence 3I2 quantities are approximately zero If IR equals three times the applied current all three phases have the same angle If 3I2 equals three times the...

Page 390: ...splay the appropriate Relay Word bit on the front panel LEDs Method Execute the TARGET command i e TAR F 50P11 Enter The SEL 387 now displays the state of several Winding 1 overcurrent elements on the bottom row of front panel LEDs Step 3 Purpose Connect and apply a single current test source until the appropriate LED illuminates Method a Connect a single current test source i e source 1 as shown ...

Page 391: ...g 1 Winding 2 Winding 3 Winding 4 Bit Setting Bit Setting Bit Setting Bit Setting Phase Level 1 50P11 50P11P 50P21 50P21P 50P31 50P31P 50P41 50P41P Phase Level 2 50P12 50P12P 50P22 50P22P 50P32 50P32P 50P42 50P42P Phase Inverse Time 51P1 51P1P 51P2 51P2P 51P3 51P3P 51P4 51P4P A Phase Level 3 50A13 50P13P 50A23 50P23P 50A33 50P33P 50A43 50P43P B Phase Level 3 50B13 50B23 50B33 50B43 C Phase Level 3...

Page 392: ...o the element pickup and time out Relay Word bits i e 51P1 51P1T b When prompted set SER2 SER3 and SER4 to NA Save the settings Step 3 Purpose Connect and apply a single current test source at a level that is M times greater than the pickup i e 2 2 M 6 6 A for this example Method a Connect a single current test source as shown in Figure 10 5 b Turn on the single current test source for the winding...

Page 393: ...to the inputs and comparing relay operation to the phase overcurrent settings These tests were previously outlined in this section Table 10 3 Time Delayed Overcurrent Elements and Corresponding Settings Winding 1 Winding 2 Winding 3 Winding 4 Bit Setting Bit Setting Bit Setting Bit Setting Phase Level 1 50P11 50P11P 50P21 50P21P 50P31 50P31P 50P41 50P41P Definite Time 50P11T 50P11D 50P21T 50P21D 5...

Page 394: ...t elements They all operate based on a comparison between a residual calculation of the three phase inputs and the residual overcurrent setting The residual calculation that is performed on the three phase inputs is as follows IR A phase B phase C phase all angles are considered as well This means that if balanced positive sequence currents are applied to the relay the relay reads IR 0 load condit...

Page 395: ... Method Referring to the overcurrent tests previously outlined in this section execute an overcurrent test and verify its operation Step 7 Purpose Verify that the torque control equation disables the overcurrent element when deasserted Method a Remove the torque control conditions to deassert the torque control equation b For this test example remove control voltage from IN101 Re execute the same ...

Page 396: ...he applied multiple of pickup current For example if 51PC1P 2 2 A 51PC1C U3 and 51PC1TD 4 0 we can use the equation below to calculate the expected operating time for M 3 applied current equals M 51PC1P 6 6 A Equation 10 2 Step 2 Purpose Set the Sequential Events Recorder to record the element timing Method a Use SET R SER1 Enter to set SER1 equal to the element pickup and time out Relay Word bits...

Page 397: ...IAW1 CTR1 CTR2 at 180 degrees Since the phasor sum is zero nothing will happen d Execute the TAR F 22 command Relay Word bits 51PC1 and 51PC1T will appear in the second row of LEDs in the A and B positions during the tests Before the test LED C should be lit representing bit 51PC1R reset e Slowly reduce IAW2 until the unit picks up indicated by LED A This should happen when IAW2 equals CTR1 CTR2 I...

Page 398: ...hat the default CT ratio settings are CTR1 120 and CTR4 400 If the ratio CTRmax CTR4 is greater than 2 0 set 50GP equal to 0 25 A times the actual ratio of CTRmax CTR4 Step 1 Purpose Determine the expected time delay for the overcurrent element Method a Execute the SHO command via the relay front panel or serial port and verify the element settings i e SHO E32I Enter b Calculate the time delay to ...

Page 399: ... nothing should happen Verify this as follows f Execute the TAR 21 command Relay Word bits 50G4 32IR 32IF and REFP are all in this row With the currents applied as above 50G4 should be 1 and REFP should remain at 0 Bit 32IR should be 1 indicating an external reverse fault Bit 32IF should be 0 g Change the angle of IAW1 to zero degrees or any value within about 80 degrees of IAW4 The REF element sh...

Page 400: ...sertion of Relay Word bit 32IF in approximately 1 5 cycles after the assertion of Relay Word bit 32IE i Repeat the test injecting first in phase IBW4 and then in phase ICW4 Differential The SEL 387 has several components to its differential element Figure 10 6 gives a representation of the differential characteristic and the plot of each test Each test only uses Winding 1 and Winding 2 inputs Any ...

Page 401: ...387 now displays the state of several differential elements in the second row of the front panel LEDs The 87U bit is the fourth from the left Step 4 Purpose Connect and ramp a single current test source until the appropriate LED illuminates Method a Connect a single current test source as shown in Figure 10 5 b Turn on the current test source for the winding under test and slowly increase the magn...

Page 402: ... winding under test Step 3 Purpose Display the appropriate Relay Word bit on the front panel LEDs Method Execute the TARGET command i e TAR F 87R Enter The SEL 387 now displays the state of several differential elements in the second row of the front panel LEDs The 87R bit is the right most LED Step 4 Purpose Connect and ramp a single current test source until the appropriate LED illuminates Metho...

Page 403: ...ral differential elements in the second row of the front panel LEDs The 87R bit is the right most LED Step 3 Purpose Select a test point on the percentage differential curve in Figure 10 6 Method a Decide where you want to cross the differential characteristic by picking a restraint value IRT that is a vertical line on the graph b Since this test is for the SLP1 threshold select a point above the ...

Page 404: ...wn in Figure 10 5 b Turn on the current test source for A phase of Winding 1 IAW1 at the value calculated above and set the phase angle at zero degrees c Turn on the current test source for A phase of Winding 2 IAW2 at the calculated initial current and set the phase angle at 180 degrees d Slowly decrease the magnitude of IAW2 until the 87R1 element asserts e Use 87R2 when injecting current into B...

Page 405: ...shold select a point above the IRS1 setting IRT IRS1 The value of IOP that corresponds to the selected IRT is as follows Equation 10 9 Both IRT and IOP are in multiples of tap Step 4 Purpose Calculate the expected current for Winding 1 and Winding 2 at the restrained differential element SLP2 threshold for the test point selected above Method Calculate the Winding 1 current for the test using the ...

Page 406: ...ease the magnitude of current IAW2 until the 87R element asserts Note the magnitude of the current applied It should equal the value calculated in Step 4 5 0 02 INOM Step 7 Purpose Repeat the test for each phase for each winding combination if desired Method a Repeat Step 1 through Step 6 for each phase b Remember to view the appropriate TARget and apply current to the appropriate winding The comp...

Page 407: ...f this second current source until the 87R element deasserts causing the 87R LED to completely extinguish Note the value of the applied current from the second test source The current from the second harmonic source should equal the PCT2 setting divided by 100 multiplied by the magnitude of the fundamental current source 5 and 0 02 INOM IAW1 second harmonic PCT2 100 IAW1 fundamental 5 0 02 INOM Fi...

Page 408: ...FREQ 60 and 250 Hz for NFREQ 50 b Starting at zero current slowly increase the magnitude of this second current source until the 87R element deasserts causing the 87R LED to completely extinguish Note the value of the applied current from the second test source The current from the fifth harmonic source should equal the PCT5 setting divided by 100 multiplied by the magnitude of the fundamental cur...

Page 409: ...et the second current source for second harmonic current 120 Hz for NFREQ 60 and 100 Hz for NFREQ 50 c Turn on the second current test source connected to the Winding 1 input IAW1 d Starting at zero current slowly increase the magnitude of applied current until the 87R element deasserts causing the 87R LED to extinguish completely Note the value of the applied current from the second test source T...

Page 410: ... and 8 Thermal Element The SEL 387 thermal element provides information on power transformer insulation aging at present loading and temperatures Ambient temperature is either measured or fixed via a setting Top oil temperatures are either calculated from the applied current or measured All measured temperatures are obtained via a serial port using a specific data format Measured temperatures are ...

Page 411: ...he sequential events recorder in the relay will be used to establish the time for the TO1 TO2 HS1 HS2 FAA1 and FAA2 bits to assert Step 2 Initialize the thermal element a With the relay turned on and the contact wired to IN101 closed issue the THE R command to initialize the thermal element Step 3 Start the test a Simultaneously open the contact wired to IN101 and apply 1 2 IN amps to IAW1 Z01 Z02...

Page 412: ...nputs and outputs Check breaker auxiliary inputs SCADA control inputs and monitoring outputs Use an ac connection check to verify that the relay current inputs are of the proper magnitude and phase rotation Brief fault tests ensure that the relay settings are correct It is not necessary to test every relay element timer and function in these tests At commissioning time use the relay METER DIF comm...

Page 413: ...lay is correctly set and connected is measuring properly and no self test has failed there is no reason to test it further Each time a fault occurs the protection system is tested Use event report data to determine areas requiring attention Slow breaker auxiliary contact operations and increasing or varying breaker operating time can be detected through detailed analysis of relay event reports Bec...

Page 414: ...removing the front panel plate c Insert a small screwdriver in this hole to adjust the contrast Relay Does Not Respond to Commands From Device Connected to Serial Port 1 Communications device not connected to relay 2 Relay or communications device at incorrect baud rate or other communication parameter incompatibility including cabling error 3 System is processing event record Wait several seconds...

Page 415: ...the factory Tripping Output Relay Remains Closed Following Fault 1 Auxiliary contact inputs improperly wired 2 Output relay contacts burned closed 3 Interface board failure SELBOOT on Front Display at Power Up Serial Port Warning to Remove Link 1 A jumper has been installed at position JMP6D a Power down b Remove the jumper c Power up the relay again No Prompting Message Issued to Terminal Upon Po...

Page 416: ...tolerance See STATUS command 2 A D converter failure Self Test Failure 12 V PS 1 Power supply 12 V output out of tolerance See STATUS command 2 A D converter failure Self Test Failure 15 V PS 1 Power supply 15 V output out of tolerance See STATUS command 2 A D converter failure Self Test Failure 15 V PS 1 Power supply 15 V output out of tolerance See STATUS command 2 A D converter failure Self Tes...

Page 417: ...connect and execute INITIO command Step 2 only applies to the upper interface board in a relay that has two interface boards 3 Interface board failure Self Test Failure CR_RAM EEPROM and IO_BRD 1 Self test detected setting location movement as a result of Flash firmware upgrade Execute R_S command 2 Main board failure contact the factory Alarm Contacts Closed 1 Power is off 2 Blown fuse 3 Power su...

Page 418: ...ance Factory Assistance We appreciate your interest in SEL products and services If you have questions or comments please contact us at Schweitzer Engineering Laboratories Inc 2350 NE Hopkins Court Pullman WA 99163 5603 U S A Phone 1 509 338 3838 Fax 1 509 332 7990 Internet selinc com E mail info selinc com ...

Page 419: ...g 4 Current transformer connection W1CT W2CT W3CT W4CT Current transformer ratio CTR1 CTR2 CTR3 CTR4 Connection compensation W1CTC W2CTC W3CTC W4CTC Nominal line to line voltage kV VWDG1 VWDG2 VWDG3 VWDG4 TAP calculation TAP1 TAP2 TAP3 TAP4 Differential Settings 087P SLP1 SLP2 IRS1 U87P Metered Load Data taken from substation panel meters not the SEL 387 Readings from meters Winding 1 Winding 2 Wi...

Page 420: ... no grounded WYE transformer windings with WYE connected CTs has setting WnCTC 0 Use a setting of 12 instead of 0 for proper zero sequence current filtering Note the following commissioning checks will not detect the failure to properly filter zero sequence current Failure to adhere to this check will result in a differential operation for external faults involving ground Proper zero sequence filt...

Page 421: ... with the reference phase position for that winding The reason is that CT polarity marks normally face away from the transformer on all windings Differential Connection issue MET DIF Enter to serial port or front panel Operate Current IOP1 IOP2 IOP3 Restraint Current IRT1 IRT2 IRT3 Mismatch Calculation MM1 MM2 MM3 Check individual current magnitudes phase angles and operate and restraint currents ...

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Page 423: ...the R and the release date follows the D The single x after SEL 387 is the relay number and will be a 0 5 or 6 depending on the relay features ordered For example FID SEL 387 5 R602 V0 Z003003 D20020118 is SEL 387 5 Relay firmware revision number 602 which was released on January 18 2002 Table A 1 lists firmware versions a description of firmware modifications and the instruction manual date codes...

Page 424: ...cters are not echoed as they are entered Increased the maximum number of allowed password characters from six to twelve 20140124 SEL 387 0 R610 V0 Z004004 D20100324 SEL 387 5 R610 V0 Z004004 D20100324 SEL 387 6 R610 V0 Z004004 D20100324 Manual update only see Table A 2 20120127 SEL 387 0 R610 V0 Z004004 D20100324 SEL 387 5 R610 V0 Z004004 D20100324 SEL 387 6 R610 V0 Z004004 D20100324 Corrected pro...

Page 425: ...20041018 Changed number of event summaries from 80 to 40 20041018 SEL 387 5 R606 V0 Z004003 D20040628 SEL 387 6 R606 V0 Z004003 D20040628 SEL 387 0 Supports firmware modifications to SEL 387 5 and SEL 387 6 SEL 387 5 and SEL 387 6 Added Direct SEL 2600A communications Added Temperature Monitoring and Alarms Added Dynamic Display capability Added Through Fault Monitor SEL 387 5 only Updated SEL 387...

Page 426: ...7 5 R500 V0 Z002002 D20010910 Added support for new DSP Added support for faster CPU Changed front panel breaker monitor display scroll time for 0 5 seconds to 2 seconds 20010910 Supports PROTO DNP SEL 387 5 R408 V0 Z102102 D20010518 SEL 387 6 R403 V0 Z102102 D20010518 Does Not Support PROTO DNP SEL 387 5 R307 V0 Z002002 D20010518 SEL 387 6 R302 V0 Z002002 D20010518 Added harmonic restraint functi...

Page 427: ...01 D20000831 Initial version 20000831 SEL 387 R105 V0 D20000629 Made internal changes to support battery backed clock hardware change 20000630 Supports PROTO DNP SEL 387 5 R405 V0 Z101101 D20000621 Does Not Support PROTO DNP SEL 387 5 R305 V0 Z001001 D20000621 Created version that supports DNP 3 00 Level 2 Slave protocol Added n command option to the CHI command CHI n will now return the last n it...

Page 428: ...mers so they are always initialized correctly Changed the CASCII command to level 0 Fixed the SG Set Group bits so they assert correctly when chang ing groups quickly using the serial port or front panel Removed from accepted Relay Word bits Enabled serial port time outs to reset front panel target index 991008 SEL 387 5 R302 V D990914 Fixed SOE lockup problem 990915 SEL 387 5 R301 V D990721 Fixed...

Page 429: ... Secondary Currents as Measured by the Relay 20160122 Section 1 Updated Specifications 20150126 Preface Added Safety Information Section 1 Updated Specifications 20140124 Section 4 Removed Relay Word bits that are not available in Table 4 7 SELOGIC Control Equation Operators Table 4 8 Maximums for SELOGIC Control Equations and Table 4 9 SEL 387 Relay Word Bits and Locations Section 7 Modified PASs...

Page 430: ...ix H Added Appendix H Transformer CT Winding Connection Diagrams 20071220 Appendix A Combined firmware revision history tables 20071025 Appendix A Updated for firmware version R609 20050919 Appendix A Updated Firmware Revision History and Manual Revision History 20050719 Entire Manual Updated format of instruction manual Section 1 Corrected Figure 1 5 to add connecting line between a 51 P G Q circ...

Page 431: ...n W1CT through W4CT Revised definitions for oil thermal time constant description Section 4 Revised Table 4 9 Table 4 10 and Table 4 11 to add through fault information Section 5 Resolved grammatical and stylistic issues Added temperature measurement description Section 6 Modified screen captures depicting default settings for 5 A and 1 A relays Added RTD A and RTD B element settings to the Settin...

Page 432: ... fault event monitoring Section 7 Added TFE serial port commands for through fault event monitoring Added SEL 2032 where SEL communications processors are mentioned Command Summary Added SEL 2032 where SEL communications processors are mentioned Appendix B Updated firmware upgrade instructions Appendix D Changed digital banks for A5C1 Fast Meter Configuration Block because of the addition of a new...

Page 433: ...larifying sentence regarding Frame Ground Added voltage 220 in description of optoisolated inputs Replaced dimension drawing and front and rear panel drawings with updated versions Section 3 Deleted figures Section 4 Deleted the Relay Word bit table that applied to the SEL 387 0 Relay Section 6 Deleted repetitious text Corrected some defaults in Settings Sheets Example Section 7 Added information ...

Page 434: ... number of events in an SEL 387 0 Relay event report Section 10 Added a test of harmonic restraint related to new firmware Appendix A Updated to reflect addition of harmonic restraint function to the SEL 387 5 R408 and R307 and the SEL 387 6 R403 and R302 Appendix D Changed to document the addition of Vdc to the Fast Meter message Appendix E Changed Compressed ASCII report for the SEL 387 5 Relay ...

Page 435: ... 3 Added REF Enable Block Logic REF Directional Element and 51PC1 and 51NC1 Combined Inverse Time O C Elements drawings specific to the SEL 387 0 Section 4 Added a table presenting SELOGIC control equation variables for the SEL 387 0 Added Relay Word bit information for the SEL 387 0 Section 7 Made text changes throughout the section to advise the user to change default passwords to private strong...

Page 436: ...drawing of model 038707 Connectorized Changed numbering of figures following Figure 2 2 because of the addition of two figures Section 4 Corrected an equation Section 5 Added paragraph Make Latch Bit Settings with Care Changed a reference to a figure in Section 2 Installation Section 6 Changed references to figures in Section 2 Installation 990513 Section 6 Reissued all Settings Sheets and Setting...

Page 437: ...nputs in General Specifications Section 3 Added REF Enable Block Logic REF Directional Element and 51PC1 and 51NC1 Combined Inverse Time O C Elements drawings specific to the SEL 387 0 Relay Section 4 Added a table presenting SELOGIC control equation variables for the SEL 387 0 Added Relay Word bit information for the SEL 387 0 Section 7 Made text changes throughout the section to advise the user ...

Page 438: ... addition of Distributed Network Protocol DNP 3 00 SEL 387 5 R405 and R305 Changed formatting Appendix B Reordered steps Appendix E Corrected CHISTORY command explanation Appendix F Corrected name of Appendix F Unsolicited SER Protocol Appendix G Created Appendix G Distributed Network Protocol DNP 3 00 20000203 Section 2 Corrected typographical errors Section 4 Corrected typographical errors Secti...

Page 439: ...0 Figure 5 21 Figure 5 23 and Figure 5 24 Added CTS to Row 14 of Table 5 8 and Table 5 9 Section 7 Added discussion of STA C command Section 9 Specified acceptable alias setting format and characters for alias names Section 10 Replaced label with updated version Replaced step 3 under Combined Overcurrent Elements this affected pagination for the rest of the section Added STA C command to Command S...

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Page 441: ...sonal computer to one of the relay serial ports Do not load firmware from a remote location 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 communications processor Perform the firmware upgrade process in the following sequence A Prepare the Relay B Establish a Terminal Connec...

Page 442: ...le relay control functions Step 2 Apply power to the relay Step 3 From the relay front panel press the SET pushbutton Step 4 Use the arrow pushbuttons to navigate to PORT Step 5 Press the SELECT pushbutton Step 6 Use the arrow pushbuttons to navigate to the relay serial port you plan to use usually the front port Step 7 Press the SELECT pushbutton Step 8 With SHOW selected press the SELECT pushbut...

Page 443: ...l computer running Windows you would typically click Start Programs Accessories Step 4 Enter a name select any icon and click OK Figure B 1 Figure B 1 Establishing a Connection Step 5 Select the computer serial port you are using to communicate with the relay Figure B 2 and click OK This port matches the port connection that you made in Step 1 on page B 2 Figure B 2 Determining the Computer Serial...

Page 444: ...T100 a From the File menu choose Properties b Select the Settings tab in the Firmware Upgrade Properties dialog box Figure B 4 c Select VT100 from the Emulation list box and click OK Figure B 4 Setting Terminal Emulation Step 8 Confirm serial communication Press Enter In the terminal emulation window you should see the Access Level 0 prompt similar to that in Figure B 5 If this is successful proce...

Page 445: ...the computer speed setting does not match the data transmission rate of the relay Perform the following steps to reattempt a connection Step 9 From the Call menu choose Disconnect to terminate communication Step 10 Correct the port setting a From the File menu choose Properties You should see a dialog box similar to Figure B 6 b Select a different port in the Connect using list box Figure B 6 Corr...

Page 446: ...evel 1 password and press Enter You will see the Access Level 1 prompt Step 3 Type 2AC Enter Step 4 Type the Access Level 2 password and press Enter You will see the Access Level 2 prompt Backup Relay Settings The relay preserves settings and passwords during the firmware upgrade process However interruption of relay power during the upgrade process can cause the relay to lose settings Make a copy...

Page 447: ... relays See the relay instruction manual for a listing Step 5 From the Transfer menu in HyperTerminal select Capture Text and click Stop Step 6 The computer saves the text file you created to the directory you specified in Step 2 Step 7 Write down the present relay data transmission setting SPEED This setting is SPEED in the SHO P relay settings output The SPEED value should be the same as the val...

Page 448: ...r e g SLBT 3xx R100 The number following the R is the SELBOOT revision number This number is different from the relay firmware revision number After SELBOOT loads the computer will display the SELboot prompt Step 4 Press Enter to confirm that the relay is in SELBOOT You will see another SELboot prompt Commands Available in SELBOOT For a listing of commands available in SELBOOT type HELP Enter You ...

Page 449: ...10 Matching Computer to Relay Parameters E Download Existing Firmware Copy the firmware presently in the relay in case the new firmware upload is unsuccessful To make a backup of the existing firmware the computer will need as much as 3 MB of free disk space This backup procedure takes 5 10 minutes at 38400 bps Step 1 Type SEN Enter at the SELboot prompt to initiate the firmware transfer from the ...

Page 450: ...ame you entered in Step 6 during the earlier download attempt this saves you from reentering these on a subsequent attempt For a successful download you should see a dialog box similar to Figure B 13 After the transfer the relay responds with the following Download completed successfully Figure B 13 Downloading Old Firmware F Upload New Firmware Step 1 Prepare to load the firmware a Insert the dis...

Page 451: ... select the firmware file c In the Protocol text box select 1K Xmodem if this protocol is available If the computer does not have 1K Xmodem select Xmodem d Click Send to send the file containing the new firmware You should see a dialog box similar to Figure B 14 Incrementing numbers in the Packet box and a bar advancing from left to right in the File box indicate that a transfer is in progress Rec...

Page 452: ...eed to G Check Relay Self Tests on page B 13 No Access Level 0 Prompt If no Access Level 0 prompt appears in the terminal emulation window one of three things could have occurred Refer to Table B 1 to determine the best solution NOTE The relay restarts in SELBOOT if relay power fails while receiving new firmware Upon power up the relay serial port will be at the default 2400 baud Perform the steps...

Page 453: ...e communications software settings to the values you recorded in A Prepare the Relay on page B 2 Step 3 From the Call menu choose Connect to rees tablish communication Step 4 Press Enter to check for the Access Level 0 prompt indicating that serial com munication is successful Step 5 If you get no response proceed to Match Computer Communications Speed to the Relay on page B 9 The restart was succ...

Page 454: ...these match the settings you saved see Backup Relay Settings on page B 6 Step 2 If the settings do not match reenter the settings you saved earlier a If you have SEL 5010 Relay Assistant software or ACSELERATOR restore the original settings by following the instructions for the respective software b If you do not have the SEL 5010 Relay Assistant software or ACSELERATOR restore the original settin...

Page 455: ...r ACSELERATOR restore the original settings by issuing the necessary SET n commands where n can be 1 6 G P L T R X or Y depending upon the settings classes available in the relay Step 7 Use the PAS command to set the original relay passwords For example type PAS 1 Ot3579 Enter to set the Access Level 1 password to Ot3579 Use a similar format for other password levels SEL relay passwords are case s...

Page 456: ...to Step 5 h For a mismatch between a displayed FID or part number and the firmware envelope label reattempt the upgrade or contact the factory for assistance Step 5 Type STA Enter and verify that all relay self test parameters are within tolerance Step 6 If you use the Breaker Wear Monitor type BRE Enter to check the data and see if the relay retained breaker wear data through the upgrade procedur...

Page 457: ...ay to service Step 2 Autoconfigure the SEL communications processor port if you have an SEL communications processor connected to the relay This step reestablishes automatic data collection between the SEL communications processor and the relay Failure to perform this step can result in automatic data collection failure when cycling communications processor power The relay is now ready for your co...

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Page 459: ...pushbutton or the serial port SET P command to activate the LMD protocol Change the port PROTO setting from the default SEL to LMD to reveal the following settings PREFIX One character to precede the address This should be a character which does not occur in the course of other communications with the relay Valid choices are one of the following The default is ADDR Two character ASCII address The ...

Page 460: ... losing echoed characters while the external transmitter is warming up Step 4 Until the relay connection terminates you can use the standard commands that are available when PROTO is set to SEL Step 5 The QUIT command terminates the connection If no data are sent to the relay before the port timeup period it automatically terminates the connection Step 6 Enter the sequence Ctrl X QUIT CR before en...

Page 461: ...ering data The device connected to the other end of the link requires software that uses the separate 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 descriptio...

Page 462: ...ay hex Response From Relay Table D 3 A5CO Relay Definition Block Sheet 1 of 2 Data Description A5C0 Command 40 Message length 64 bytes 42 Message length 66 bytes DNP versions only xx Non DNP versions 02 xx DNP versions 03 03 Support fast meter fast demand and fast peak 05 Status flag commands supported Warn Fail Group or Settings change A5C1 Fast meter configuration A5D1 Fast meter message A5C2 Fa...

Page 463: ...k Sheet 2 of 2 Data Description Table D 4 A5C1 Fast Meter Configuration Block Sheet 1 of 4 Data Description A5C1 Fast Meter command E0 Message length 224 bytes 01 One status flag byte 01 Scale factors in configuration message 05 scale factors 0D analog input channels 02 samples per channel 3F digital banks 63 bytes 04 calculation blocks 0004 Analog channel data offset 0038 Time stamp offset 52 byt...

Page 464: ...4257330000 IBW3 00 01 00D2 494357330000 ICW3 00 01 00D2 494157340000 IAW4 00 01 00D6 Winding 4 494257340000 IBW4 00 01 00D6 494357340000 ICW4 00 01 00D6 564443000000 VDC 00 01 00DA xx Connection byte Based on PHROT and W1CT settings Calculation block 1 03 Current calculation only FFFF No skew adjustment FFFF No RS offset FFFF No XS offset Table D 4 A5C1 Fast Meter Configuration Block Sheet 2 of 4 ...

Page 465: ... offset 03 IAW2 04 IBW2 05 ICW2 FF NA FF NA FF NA xx Connection byte Based on PHROT and W3CT settings Calculation block 3 03 Current calculation only FFFF No skew adjustment FFFF No RS offset FFFF No XS offset 06 IAW3 07 IBW3 08 ICW3 FF NA FF NA FF NA xx Connection byte Based on PHROT and W4CT settings Calculation block 4 03 Current calculation only FFFF No skew adjustment FFFF No RS offset FFFF N...

Page 466: ...r 200 Inom CTR2 Winding 2 xxxxxxxx Scale factor 200 Inom CTR3 Winding 3 xxxxxxxx Scale factor 200 Inom CTR4 Winding 4 3C23D70A Scale factor 1 100 00 Reserved xx Checksum Table D 4 A5C1 Fast Meter Configuration Block Sheet 4 of 4 Data Description Table D 5 A5D1 Fast Meter Data Block Data Description A5D1 Command 80 Message length 128 bytes xx Status byte Bit 2 Usage Self test warning Bit 3 Usage Se...

Page 467: ...g channel name 02 Analog channel type double precision float FF No scale factor 0000 No scale factor offset 494257310000 IBW1 02 FF 0000 494357310000 ICW1 02 FF 0000 334932573100 3I2W1 02 FF 0000 495257310000 IRW1 02 FF 0000 494157320000 IAW2 02 FF 0000 494257320000 IBW2 02 FF 0000 494357320000 ICW2 02 FF 0000 334932573200 3I2W2 02 FF 0000 Table D 6 A5C2 A5C3 Demand Peak Demand Fast Meter Configur...

Page 468: ...94157330000 IAW3 02 FF 0000 494257330000 IBW3 02 FF 0000 494357330000 ICW3 02 FF 0000 334932573300 3I2W3 02 FF 0000 495257330000 IRW3 02 FF 0000 494157340000 IAW4 02 FF 0000 494257340000 IBW4 02 FF 0000 494357340000 ICW4 02 FF 0000 334932573400 3I2W4 02 FF 0000 Table D 6 A5C2 A5C3 Demand Peak Demand Fast Meter Configuration Messages Sheet 3 of 4 Data Description ...

Page 469: ...5D2 A5D3 Demand Peak Demand Fast Meter Message Data Description A5D2 or A5D3 Command A6 Message length 166 bytes 00 Reserved 160 bytes Demand meter values in double floats in the same order as channel listings in A5C2 00 Reserved xx Checksum Table D 8 A5CE Fast Operate Configuration Block Sheet 1 of 3 Data Description A5CE Command 42 Message length bytes 66 04 circuit breakers supported 0010 16 re...

Page 470: ...emote bit RB7 46 Pulse remote bit RB7 07 Clear remote bit RB8 27 Set remote bit RB8 47 Pulse remote bit RB8 08 Clear remote bit RB9 28 Set remote bit RB9 48 Pulse remote bit RB9 09 Clear remote bit RB10 29 Set remote bit RB10 49 Pulse remote bit RB10 0A Clear remote bit RB11 2A Set remote bit RB11 4A Pulse remote bit RB11 0B Clear remote bit RB12 2B Set remote bit RB12 4B Pulse remote bit RB12 0C ...

Page 471: ... Pulse remote bit RB16 00 Reserved pad xx Checksum Table D 8 A5CE Fast Operate Configuration Block Sheet 3 of 3 Data Description Table D 9 A5E0 Fast Operate Remote Bit Control Data Description A5E0 Command 06 Message length xx Operate code 0 F 20 2F 40 4F for remote bit clear set or pulse xx Operate validation 4 operate code 1 xx Checksum Table D 10 A5E3 Fast Operate Breaker Control Data Descripti...

Page 472: ...13 A546 Temperature Data Block SEL 387 5 and SEL 387 6 Data Description 0xA546 Header code to flag the beginning of message 74h Message length 116 bytes 0000000000h Routing value 0 for point to point communication 00h Status byte 12h Function code unsolicited read response 00h Sequence byte 00h Pad byte xxxxxxxx Internal time since power up or rollover at 86400000 milliseconds xxxx External RTD Un...

Page 473: ... status quantities is in a WARN state SNS Message In response to the SNS command the relay sends the name string of the SER SER1 SER2 SER3 and SER4 settings SNS command is available at Access Level 1 The relay responds to the SNS command with the name string in the SER settings The name string starts with SER1 followed by SER2 SER3 and SER4 For example If SER1 50P11 OUT101 SER2 87U1 32IF SER3 OUT1...

Page 474: ...f ALIAS1 OUT101 CL_BKR_1 SNS includes OUT101 not the custom label Refer to Settings in Section 6 Setting the Relay SNS message for the SEL 387 5 is STX xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR xxxx xxxx xxxx CR ETX where xxxx a string from the settings in SER SER1 SER2 SER3 and SER4 yyyy the 4 byte ASCII representation of the checksum ...

Page 475: ...CII Commands Command Description CASCII Configuration message CBREAKER Breaker report CEVENT Event report Winding CEVENT DIF Event report Differential CHISTORY History report CSTATUS Status report CTARGET Target display CTHERMAL Thermal report CTHERMAL D 1 Transformer 1 daily thermal report CTHERMAL D 2 Transformer 2 daily thermal report CTHERMAL D 3 Transformer 3 daily thermal report CTHERMAL H 1...

Page 476: ... ASCII command as sent by the requesting device The naming convention for the Compressed ASCII commands is a C preceding the typical command For example CSTATUS abbreviated to CST is the compressed STATUS command l1 the minimum access level e g 1 or B or 2 at which the command is available H identifies a header line to precede one or more data lines is the number of subsequent ASCII names For exam...

Page 477: ...D I I I I I I I yyyy CR 19H BREAKER INT_TRIPS IAW IBW ICW EXT_TRIPS IAW IBW ICW POLE1 POLE2 POLE3 MONTH DAY YEAR HOUR MIN SEC MSEC yyyy CR 4D I I F F F I F F F I I I I I I I I I I yy yy CR CHI 1 yyyy CR 1H FID yyyy CR 1D 40S yyyy CR 7H MONTH_ DAY_ YEAR_ HOUR_ MIN_ SEC_ MSEC_ yyyy CR 1D I I I I I I I yyyy CR 11H REC_NUM MONTH DAY YEAR HOUR MIN SEC MSEC EVENT GROUP TARGETS yyyy CR 80D I I I I I I I ...

Page 478: ...S IAW IBW ICW POLE1 POLE2 POLE3 MONTH DAY YEAR HOUR MIN SEC MSEC yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR xxxx xxxx xxxx xxx...

Page 479: ...formation collected since the last summary clear xxxx are the data values corresponding to the first line labels yyyy the 4 byte ASCII representation of the hex checksum for the line Report Types Description DIF Display differential information for all the elements R Displays raw unfiltered analog data and raw station battery Displays preceding 1 5 cycles including reports with L options Allows S4...

Page 480: ...xxx are the data values corresponding to the first line labels yyyy the 4 byte ASCII representation of the hex checksum for the line z to mark where the event was triggered to mark the maximum current for the event with the overriding the RLY_BITS relay element data in hex ASCII corresponding to the DIGITAL_ELEMENT_NAMES SETTINGS text refers to the current settings of the relay as described in the...

Page 481: ...AW1 IBW1 ICW1 IAW2 IBW2 ICW2 IAW3 IBW3 ICW3 IAW4 IBW4 ICW4 5V_PS 5V_REG 5V_REG 12V_PS 12V_PS 15V_PS 15V_PS TEMP RAM ROM A D CR_RAM EEPROM IO_BRD yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xx xx xxxx xxxx yyyy CR ETX CTARGET Command Display the SEL 387 Compressed ASCII target display by sending CTA N Enter where N is on...

Page 482: ... 1D 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S 9S yyyy CR CBR 1 yyyy CR 1H FID yyyy CR 1D 40S yyyy CR 7H MONTH_ DAY_ YEAR_ HOUR_ MIN_ SEC_ MSEC_ yyyy CR 1D I I I I I I I yyyy CR 19H BREAKER INT_TRIPS IAW IBW ICW EXT_TRIPS IAW IBW ICW POLE1 POLE2 POLE3 MONTH DAY YEAR HOUR MIN SEC MSEC yyyy CR 4D I I F F F I F F F I I I I I I I I I I yy yy CR CHI 1 yyyy CR 1H FID yyyy...

Page 483: ...EAR_ HOUR_ MIN_ SEC_ MSEC_ yyyy CR 1D I I I I I I I yyyy CR 11H MONTH_ DAY_ YEAR_ Ambient Calc TopOil Msrd TopOil Hot Spot Load Max FAA RLOL TLOL yyyy CR 31D I I I F F F F F F F F yyyy CR CTH D 2 1 yyyy CR 7H MONTH_ DAY_ YEAR_ HOUR_ MIN_ SEC_ MSEC_ yyyy CR 1D I I I I I I I yyyy CR 11H MONTH_ DAY_ YEAR_ Ambient Calc TopOil Msrd TopOil Hot Spot Load Max FAA RLOL TLOL yyyy CR 31D I I I F F F F F F F ...

Page 484: ...xxxx xxxx xxxx xxxx xxxx yyyy CR ETX CEVENT Command The CEV report contains every analog and digital element found in an EVE report and displays the information in Compressed ASCII format by sending CEV DIF R n Sx Ly w C Enter where yyyy the 4 byte ASCII representation of the hex checksum for the line H identifies a header line to precede one or more data lines is the number of subsequent ASCII na...

Page 485: ...ts on all windings and station battery averaged for 1 cycle Report Options Description n Event number Default to 1 Sx Samples per cycle x 4 or 8 See R option Default to 4 if Sx not specified Ly Display first y cycles of event report y 1 LER Default to L15 if Ly not specified Ly Displays event report from cycle y to end of report Ly w Displays event report from cycle y to cycle w C Default to 8 sam...

Page 486: ...I Enter command by sending the following STX FID yyyy CR FID SEL 387 XXXX V0 ZXXXXXX DXXXXXXXX yyyy CR MONTH_ DAY_ YEAR_ HOUR_ MIN_ SEC_ MSEC_ yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR REC_NUM MONTH DAY YEAR HOUR MIN SEC MSEC EVENT GROUP TARGETS yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR continue previous line until all events are listed max 80 ETX where xxxx a...

Page 487: ...and If N is omitted 0 is used The relay responds STX LLLL LLLL LLLL LLLL LLLL LLLL LLLL LLLL yyyy CR x x x x x x x x yyyy CR ETX CTH Thermal Report Command Display the following thermal reports in Compressed ASCII format by sending CTH H D T phase Enter where xxxx the data values corresponding to the first line labels yyyy the 4 byte ASCII representation of the hex checksum for the line NOTE If th...

Page 488: ...R_ MIN_ SEC_ MSEC_ yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR MONTH_ DAY_ YEAR_ Ambient Calc TopOil Msrd TopOil Hot Spot Load Max FAA RLOL TLOL yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR previous line repeated until all archive data is listed ETX To obtain the report for Phase B send the following CTH D 2 Enter STX MONTH_ DAY_ YEAR_ HOUR_ MIN_ SEC_ MSEC_ yyyy CR...

Page 489: ... Msrd TopOil Hot Spot Load FAA yyyy CR xxxx xxxx xxxx xxxx xxxx x xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR previous line repeated until all archive data is listed ETX To obtain the report for Phase C send the following CTH H 3 Enter STX MONTH_ DAY_ YEAR_ HOUR_ MIN_ SEC_ MSEC_ yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR MONTH_ DAY_ YEAR_ HOUR_ MIN_ ComError Ambient Calc TopOil Msrd TopOil ...

Page 490: ...ode 20170601 Compressed ASCII Commands SEL 387 6 Relay If no data are available the relay replies No Data Available 0668 CR where xxxx data values corresponding to the first line labels yyyy the 4 byte ASCII representation of the checksum for the line ...

Page 491: ... commands and ASCII commands Recommended Message Usage Use the following sequence of commands to enable unsolicited binary SER messaging in the SEL 387 Step 1 On initial connection send the SNS command to retrieve and store the ASCII names for the digital I O points assigned to trigger SER records The order of the ASCII names matches the point indices in the unsolicited binary SER messages a Send ...

Page 492: ... 16 field If any of the checks fail except the function code or the function to enable the message is ignored If an acknowledge is requested as indicated by the least significant bit of the status byte the relay transmits an acknowledge message with the same response number received in the enable message The nn field is used to set the maximum number of SER records per message The relay checks for...

Page 493: ...mits an acknowledge message with the same response number received in the enable message If the function to disable is not 18 or the function code is not recognized the relay responds with an acknowledge message containing the response code 01 function code unrecognized and no functions are disabled 0x18 Function Unsolicited Sequence of Events Response The function 0x18 is used for the transmissio...

Page 494: ...ated in the time of day field XX 2nd element index uuuuuu Three byte time tag offset of 2nd element in microseconds since time indicated in the time of day field xx last element index uuuuuu Three byte time tag offset of last element in microseconds since time indicated in the time of day field FFFFFFFE Four byte end of records flag ssssssss Packed four byte element status for up to 32 elements LS...

Page 495: ...a Transfer message from a relay with all of SER1 SER2 and SER3 set to NA A5 46 0E 00 00 00 00 00 00 81 02 XX cc cc XX is the same as the response number in the Enable Unsolicited Data Transfer message to which it responds EXAMPLE F 3 Disable Unsolicited Data Transfer message acknowledge requested A5 46 10 00 00 00 00 00 01 02 C0 XX 18 00 cc cc XX 0 1 2 3 mmmmmmmm Four byte time of day in milliseco...

Page 496: ...ange An element index of 0xFD indicates that the element identified in this SER record is no longer in the SER trigger settings When the relay sends an SER message packet it will put a sequential number 0 1 2 3 0 1 into the response number If the relay does not receive an acknowledge from the master before approximately 500 ms the relay will resend the same message packet with the same response nu...

Page 497: ... DNP operation Table G 1 Data Needed to Configure a Port for DNP Sheet 1 of 2 Label Description Default SPEED Baud rate 300 19200 2400 T_OUT Port time out 0 30 minutes 5 DNPADR DNP Address 0 65534 0 MODEM Modem connected to port Y N N MSTR Modem startup string up to 30 characters E0X0 D0S0 2 PH_NUM Phone number to dial out to up to 30 characters MDTIME Time to attempt dial 5 300 seconds 60 MDRETI ...

Page 498: ... If the PSTDLY time delay is in progress RTS still high following a transmission and another transmission is initiated the SEL 387 transmits the message without completing the PSTDLY delay and without any preceding PREDLY delay The RTS CTS handshaking can be completely disabled by setting PREDLY to OFF In this case RTS is forced high and CTS is ignored with only received characters acting as a DCD...

Page 499: ...ng received the SEL 387 will wait a configurable amount of time before beginning a transmission This hold off time will be a random value between the MINDLY and MAXDLY setting values The hold off time is random which prevents multiple devices waiting to communicate on the network from continually colliding Data Access Method Based on the capabilities of the system it is necessary to choose a metho...

Page 500: ...tion Configurable by setting Maximum application fragment size transmitted received octets 2048 Maximum application layer retries None Requires application layer confirmation When reporting Event Data Data link confirm time out Configurable Complete application fragment time out None Application confirm time out Configurable Complete Application response time out None Executes control WRITE binary...

Page 501: ... 7 8 129 0 1 7 8 1 2a Binary Input With Status 1 0 1 6 7 8 129 0 1 7 8 2 0 Binary Input Change All Variations 1 6 7 8 2 1 Binary Input Change Without Time 1 6 7 8 129 17 28 2 2a Binary Input Change With Time 1 6 7 8 129 130 17 28 2 3 Binary Input Change With Relative Time 1 6 7 8 129 17 28 10 0 Binary Output All Variations 1 0 1 6 7 8 10 1 Binary Output 10 2a Binary Output Status 1 0 1 6 7 8 129 0...

Page 502: ...unter Change Event With out Time 22 5 32 Bit Counter Change Event With Time 1 6 7 8 129 17 28 22 6 16 Bit Counter Change Event With Time 1 6 7 8 129 17 28 22 7 32 Bit Delta Counter Change Event With Time 22 8 16 Bit Delta Counter Change Event With Time 23 0 Frozen Counter Event All Variations 23 1 32 Bit Frozen Counter Event Without Time 23 2 16 Bit Frozen Counter Event Without Time 23 3 32 Bit Fr...

Page 503: ...ariations 33 1 32 Bit Frozen Analog Event Without Time 33 2 16 Bit Frozen Analog Event Without Time 33 3 32 Bit Frozen Analog Event With Time 33 4 16 Bit Frozen Analog Event With Time 40 0 Analog Output Status All Variations 1 0 1 6 7 8 40 1 32 Bit Analog Output Status 1 0 1 6 7 8 129 0 1 7 8 40 2a 16 Bit Analog Output Status 1 0 1 6 7 8 129 0 1 7 8 41 0 Analog Output Block All Variations 41 1 32 ...

Page 504: ...ecimal 112 All Virtual Terminal Output Block 2 6 113 All Virtual Terminal Event Data 1 20 21 6 129 130 17 28 No object 13 14 23 a Default Table G 4 SEL 387 Relay DNP Object Table Sheet 4 of 4 Object Request supported Response may generate Obj Var Description Function Codes decimal Qualifier Codes hex Function Codes decimal Qualifier Codes hex Table G 5 SEL 387 Relay Wye Delta DNP Data Map Sheet 1 ...

Page 505: ...41 Read next relay event 20 22 00 Active settings group 20 22 01 Internal breaker trips1 20 22 02 Internal breaker trips 2 20 22 03 Internal breaker trips 3 20 22 04 Internal breaker trips 4 20 22 05 External breaker trips 1 20 22 06 External breaker trips 2 20 22 07 External breaker trips 3 20 22 08 External breaker trips 4 30 32 00 01 IA magnitude and angle for Wdg 1 30 32 02 03 IB magnitude and...

Page 506: ...rent 30 32 53 IRT3 Restraint Current 30 32 54 I1F2 Second Harmonic Current 30 32 55 I2F2 Second Harmonic Current 30 32 56 I3F2 Second Harmonic Current 30 32 57 I1F5 Fifth Harmonic Current 30 32 58 I2F5 Fifth Harmonic Current 30 32 59 I3F5 Fifth Harmonic Current 30 32 60 VDC 30 32 61 65 Demand A B C 3I2 and IR magnitudes for Wdg 1 30 32 66 70 Demand A B C 312 and IR magnitudes for Wdg 2 30 32 71 75...

Page 507: ...IC time in DNP format for Wdg 3 30 32 133 Peak demand 312 mag for Wdg 3 30 134 136 Peak demand 312 time in DNP format for Wdg 3 30 32 137 Peak demand IR mag for Wdg 3 30 138 140 Peak demand IR time in DNP format for Wdg 3 30 32 141 Peak demand IA mag for Wdg 4 30 142 144 Peak demand IA time in DNP format for Wdg 4 30 32 145 Peak demand IB mag for Wdg 4 30 146 148 Peak demand IB time in DNP format ...

Page 508: ...ble following 30 32 174 176 Thermal Load A B C 30 32 202 Fault Targets bit 15 EN bit 8 51 and bit 7 A bit 0 W4 30 32 177 179 In Service Cooling System A B C 30 32 203 205 Fault Currents Winding 1 A B C 30 32 180 182 Calculated Top Oil Temperature A B C 30 32 206 208 Fault Currents Winding 2 A B C 30 32 183 185 Measured Top Oil Temperature A B C a a Error code 400 when measured top oil temperature ...

Page 509: ...he corresponding magnitude the preceding point contains a value greater than the value given by the ANADBA setting Analog inputs are scanned at approximately a second rate except for analogs 201 218 During a scan all events generated will use the time the scan was initiated Analogs 201 218 are derived from the history queue data for the most recently read fault and do not generate event messages A...

Page 510: ...h On 3 Latch Off 4 Pulse On 1 Pulse Off 2 0 15 Set Clear Set Clear Pulse Clear 16 23 Pulse Do nothing Pulse Do nothing Pulse Do nothing 24 Pulse RB2 Pulse RB1 Pulse RB2 Pulse RB1 Pulse RB2 Pulse RB1 25 Pulse RB4 Pulse RB3 Pulse RB4 Pulse RB3 Pulse RB4 Pulse RB3 26 Pulse RB6 Pulse RB5 Pulse RB6 Pulse RB5 Pulse RB6 Pulse RB5 27 Pulse RB8 Pulse RB7 Pulse RB8 Pulse RB7 Pulse RB8 Pulse RB7 28 Pulse RB1...

Page 511: ...102 IN101 207 200 28 IN208 IN207 IN206 IN205 IN204 IN203 IN202 IN201 215 208 29 IN216 IN215 IN214 IN213 IN212 IN211 IN210 IN209 223 216 30 b b b b b b b b 231 224 31 b b b b b b b b 239 232 32 S1V1 S1V2 S1V3 S1V4 S1V1T S1V2T S1V3T S1V4T 247 240 33 S2V1 S2V2 S2V3 S2V4 S2V1T S2V2T S2V3T S2V4T 255 248 34 S3V1 S3V2 S3V3 S3V4 S3V5 S3V6 S3V7 S3V8 263 256 35 S3V1T S3V2T S3V3T S3V4T S3V5T S3V6T S3V7T S3V8...

Page 512: ...lists of indices one for the analog inputs 30 and 32 one for the binary inputs 1 one 2 one for the binary outputs 10 and 12 one for the analog outputs 40 and 41 and the other for the counters 20 and 22 The indices correspond to those given by the relay DNP data map The order in which they occur in the list determines the index that the corresponding value is reported to the DNP master If a value i...

Page 513: ...er AI AO BI BO C at level 2 or greater the relay asks the user to enter indices for the corresponding list The A parameter is the same as AI and B is the same as BI these parameters are available for consistency with older products 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 ...

Page 514: ... following PROTOCOL DNP MODEM Y On power up and settings change the relay shall initialize the modem by issuing the string AT followed by the MSTR string and CR This will initialize the modem The MSTR modem string is a port setting visible only when the protocol setting is DNP The MSTR setting is a series of ASCII characters that initialize the modem by sending the modem a series of commands If so...

Page 515: ...ite FC 2 to send data from the Master side to the Slave side IED of the link Object 113 is used to send data from the relay side to the Master side of the link Master devices can use only Function codes Read FC 1 The relay uses only Function codes Response FC 129 The procedure for accessing these objects is as follows Master devices transmit data to relay devices by writing one or more of object 1...

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Page 517: ...vent data 0 for no event 1 3 ECLASSA Class for Binary event data 0 for no event 1 3 ECLASSB Class for Counter event data 0 for no event 1 3 ECLASSC Currents scaling 0 3 decimal places DECPLA Time set request interval minutes 0 for never 1 32767 TIMERQ Select Operate time out interval seconds 0 0 30 0 STIMEO Data link time out interval seconds 0 5 DTIMEO Minimum Delay from DCD to transmission secon...

Page 518: ...6 Relay Instruction Manual Date Code 20170601 Date________________ Enable unsolicited messages on power up Y N PUNSOL Address of master to report to 0 65534 REPADR Number of events to transmit on 1 200 NUMEVE Age of oldest event to force transmit on seconds 0 0 60 0 AGEEVE ...

Page 519: ... electromechanical differential relay Taps on the relay current inputs compensated for magnitude differences Modern digital relays perform both the connection or phase and magnitude compensation mathematically so all CTs can be connected in wye This section provides a procedure for SEL 387 Relays to determine and set the Terminal n CT connection compensation settings WnCTC where n 1 2 3 or 4 to co...

Page 520: ...e shift seen by the relay the following information is required Transformer phasor vector diagram transformer nameplate Three line connection diagram showing System phase to transformer bushing connections CT connections CT to relay connections Figure H 1 shows the key information from a typical nameplate for a two winding transformer The winding connection diagram and the phasor vector diagram ar...

Page 521: ...ctions Standard phase to bushing connections are A phase to H1 B phase to H2 C phase to H3 a phase to X1 b phase to X2 and c phase to X3 Standard CT connections include wye connected CTs with polarity marks of both CTs away from or towards the transformer Figure H 2 shows both H side and X side CTs connected in wye and the polarity marks away from the transformer A CT to relay connection is consid...

Page 522: ...ng secondary currents as seen by the relay IAW2 and IAW1 will look like as shown in Figure H 3 Ia lags IA by 30 degrees and Figure H 4 IAW2 lags IAW1 by 210 degrees respectively The goal of the compensation settings is to compensate IAW2 so as to bring IAW2_compensated 180 degrees out of phase with IAW1 for proper application of the differential function Figure H 3 Primary Current Phasors Figure H...

Page 523: ...select one of the wye windings as the reference and choose matrix CTC 11 for the compensation Step 3 Determine the required compensation setting for all other windings Select matrix CTC 0 for delta windings Use odd matrices for compensating wye windings Avoid the use of even matrices when possible There may be applications that require the guidelines to be violated but they should be followed when...

Page 524: ...e Current Phasors for Figure H 5 The primary load phase shift determined in Figure H 6 applies for the phase to bushing connections shown in Table H 2 In each of these phase to bushing connections the order of the phases A B C matches the order of the bushings H1 H2 H3 Non Standard Phase to Bushing Connections Consider the transformer connections in Figure H 7 This is the same transformer discusse...

Page 525: ...e shift determined in Figure H 8 applies for the phase to bushing connections shown in Table H 3 In each of these phase to bushing connections the order of the phase connections A C B is opposite the order of the bushings H1 H2 H3 The system phase to transformer bushing connection diagrams in Figure H 5 and Figure H 7 are on the same transformer but with a different order of the phases connected t...

Page 526: ...rent Law is used at each H node to determine the primary phase currents on the H side of the system IA Ic Ia IB Ia Ib IC Ib Ic Figure H 10 shows that system primary current Ia X side lags the system primary current IA H side by 150 degrees Figure H 10 X and H Side Current Phasors for Figure H 9 These three examples show that the same transformer winding connections can produce different phase shif...

Page 527: ... Figure H 11 also shows the primary system currents IA system Ia system and the CT secondary currents seen by the relay IA relay Ia relay based on the currents of Figure H 6 For these connections with power flow from the H side to the X side of the transformer currents enter the relay at the polarity mark on the H side and leave the relay at the polarity mark on the X side Thus on the primary syst...

Page 528: ... to be made because of this type of non standard CT connection Figure H 13 Current Flow With Reversed X Side CT Polarity Non Standard CT Connections Reversed CT Polarity and Reversed Connections In Figure H 14 the polarity marks of the X side CTs are toward the transformer as in Figure H 13 but the neutral sides of the CTs are away from the transformer With these connections the H side and X side ...

Page 529: ...urrent input and the polarity terminal of the CT to the non polarity terminal of the relay current input These changes result in the connections shown in Figure H 13 An alternate method to correct the phase shift is to use the CT compensation setting WnCTC As shown in Table H 1 each CTC setting results in a counter clockwise phase shift that is a multiple of 30 degrees for an ABC system phase rota...

Page 530: ... removes zero sequence current from the differential calculation If there is no delta winding select one of the wye windings as the reference and set the compensation setting to 11 WnCTC 11 for the reference winding Step 3 Determine the Required Compensation Settings for All Other Windings Use the following guidelines for choosing the remaining CT compensation settings 1 Compensate delta windings ...

Page 531: ...tion to be 180 degrees out of phase with IAW1 Therefore set W2CTC 1 The resulting compensation settings for this system are W1CTC 0 and W2CTC 1 EXAMPLE H 2 Delta Wye Transformer With Non Standard Phase to Bushing Connections Standard CT Connections and an ABC System Phase Rotation This example uses the transformer and relay connections of Figure H 18 This is the same transformer as in Example H 1 ...

Page 532: ...ed to Terminal W2 so W2CTC must be determined Figure H 19 Primary Currents and Secondary Currents as Measured by the Relay IAW2 must be rotated 330 degrees 11 multiples of 30 degrees in the counter clockwise direction for a system with an ABC phase rotation to be 180 degrees out of phase with IAW1 Therefore set W2CTC 11 The resulting compensation settings are W1CTC 0 and W2CTC 11 Although the same...

Page 533: ...hase currents on the X side are Ia IA IC Ib IB IA Ic IC IB In Figure H 21 IA on the wye side of the transformer is chosen as the reference to derive the phasor diagram of the delta side currents The system primary current Ia X side lags IA H side by 30 degrees or leads IA by 330 degrees Figure H 21 X and H Side Current Phasors for Figure H 20 With the reversed CT polarity on the X side the current...

Page 534: ...h non standard CT connections on the X side are W2CTC 0 and W1CTC 5 EXAMPLE H 4 Autotransformer Standard Phase to Bushing Connections Standard CT Connections and an ABC System Phase Rotation Consider the autotransformer shown in Figure H 23 The delta tertiary exists but is buried and not brought out to the relay The primary current phase shift for these connections is shown in Figure H 24 The syst...

Page 535: ...EXAMPLE H 5 Delta Wye Transformer With Standard Phase to Bushing Connections Standard CT Connections and an ACB System Phase Rotation Consider the application in Figure H 25 with standard phase to bushing connections standard CT connections and an ACB system phase rotation X1 X2 X3 H3 H2 H1 C B A c b a B H2 C H3 A H1 a T1 b T2 c T3 a X1 b X2 c X3 IAW1 IBW1 ICW1 IAW2 IBW2 ICW2 SEL 387 Partial IA Sy...

Page 536: ...s IA H side by 30 degrees The CT connections are standard which results in IAW2 lagging IAW1 by 150 degrees Figure H 28 shows the phase relationship of both the primary system phase currents and the secondary phase currents as seen by the relay Figure H 26 X and H Side Current Phasors for Figure H 25 A common misconception is that a different compensation setting pair is required depending on the ...

Page 537: ...ion With a Zig Zag Grounding Transformer Within the Differential Zone on the Delta Side This example uses the same transformer and CT connections as in Example H 1 except that it includes a zig zag grounding transformer within the differential zone on the delta side of the transformer Zig zag transformers are typically used for grounding purposes and act as a source of zero sequence current If the...

Page 538: ...e rotations Figure H 29 Common Transformer Connections H2 H3 H1 Winding 1 H3 H2 H1 X3 X2 X1 X3 X2 X1 X0 Winding 1 H3 H2 H1 X1 X2 X3 X3 X2 X1 X0 H2 H3 H1 Winding 2 Winding 2 DABY Dy1 DACY Dy11 Winding 2 X3 X2 X1 X2 X3 X1 H3 H2 H1 Winding 1 H3 H2 H1 H0 H3 H2 H1 Winding 1 H3 H2 H1 H0 X2 X3 X1 Winding 2 X3 X2 X1 YDAB Yd11 YDAC Yd1 H2 H3 H1 Winding 1 H3 H2 H1 Winding 2 X3 X2 X1 X2 X3 X1 H3 H2 H1 Windin...

Page 539: ...In each of these phase to bushing connections the order of the phase connections A B C matches the order of the bushings H1 H2 H3 References Further discussion on selecting transformer compensations settings can be found in the technical paper Beyond the Nameplate Selecting Transformer Compensation Settings for Secure Differential Protection by Barker Edwards David G Williams Ariana Hargrave Matth...

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Page 541: ...resently in the relay DAT m d y Enter date in this manner if Date Format setting DATE_F MDY DAT y m d Enter date in this manner if Date Format setting DATE_F YMD EVE n Show standard event report number n with 1 4 cycle resolution Attach S8 for 1 8 cycle resolution EVE D n Show digital data event report number n with 1 4 cycle resolution Attach S8 for 1 8 cycle resolution EVE DIF1 n Show differenti...

Page 542: ...Shows active group if n is not specified SHO G Show relay global settings SHO P Show port settings and identification of port to which user is connected SHO P n Show port settings for port n n 1 2 3 4 SHO R Show Sequential Events Recorder SER settings STA Show relay self test status STA C Clear relay status report from memory and reboot the relay TAR n k Show Relay Word row n status n 0 through 41...

Page 543: ...AC Enter Access Level 2 If the main board password jumper JMP6A is not in place the relay prompts for the entry of the Access Level 2 password in order to enter Access Level 2 BRE Breaker report shows trip counters trip currents and wear data for up to four breakers BRE R n Reset trip counters trip currents and wear data for breaker n n 1 2 3 4 A BRE W n Pre set the percent contact wear for each p...

Page 544: ... of the 24 RTD inputs SEL 387 5 and SEL 387 6 Relays only OPE n Assert the OCn Relay Word bit Used to open breaker n if OCn is assigned to an output contact JMP6B has to be in place to enable this command PUL y k Pulse output contact y y OUT101 OUT107 OUT2XX and OUT3XX Enter number k to pulse for k sec onds k 1 to 30 seconds otherwise pulse time is 1 second JMP6B has to be in place to enable this ...

Page 545: ...emperature inputs received from an SEL 2032 an SEL 2030 or an SEL 2020 Communications Processor TIM Show or set time 24 hour time Show time presently in the relay by entering just TIM Example time 22 47 36 is entered with command TIM 22 47 36 TRI Trigger an event report Access Level 2 Commands The Access Level 2 commands primarily allow the user to change settings or operate relay parameters and o...

Page 546: ... latest event reports HIS C Clear the brief summary and corresponding standard event reports ID Display variety of identification and configuration information about the relay INI INITIO command reports the number and type of I O boards in the relay In Access Level 2 confirms that I O boards are correct IRI Force synchronization attempt of internal relay clock to IRIG B time code input MET k Displ...

Page 547: ...ttings If parameter n is not entered setting editing starts at the first setting SET G Change global settings SET P n Change port settings SET R Change Sequential Events Recorder SER settings SHO n Show relay group n settings Shows active group if n is not specified SHO G Show relay global settings SHO P Show port settings and identification of port to which user is connected SHO P n Show port set...

Page 548: ...x to day y If x and y are omitted retrieves entire profile data If x or y is omitted retries profile from day x y to present THE P n Loads preset value of accumulated insulation loss of life THE R Clears the hourly profile daily profile and thermal event data archives and resets the total loss of life values THE T Displays the four temperature inputs received from an SEL 2032 an SEL 2030 or an SEL...

Page 549: ...resently in the relay DAT m d y Enter date in this manner if Date Format setting DATE_F MDY DAT y m d Enter date in this manner if Date Format setting DATE_F YMD EVE n Show standard event report number n with 1 4 cycle resolution Attach S8 for 1 8 cycle resolution EVE D n Show digital data event report number n with 1 4 cycle resolution Attach S8 for 1 8 cycle resolution EVE DIF1 n Show differenti...

Page 550: ...Shows active group if n is not specified SHO G Show relay global settings SHO P Show port settings and identification of port to which user is connected SHO P n Show port settings for port n n 1 2 3 4 SHO R Show Sequential Events Recorder SER settings STA Show relay self test status STA C Clear relay status report from memory and reboot the relay TAR n k Show Relay Word row n status n 0 through 41...

Page 551: ...AC Enter Access Level 2 If the main board password jumper JMP6A is not in place the relay prompts for the entry of the Access Level 2 password in order to enter Access Level 2 BRE Breaker report shows trip counters trip currents and wear data for up to four breakers BRE R n Reset trip counters trip currents and wear data for breaker n n 1 2 3 4 A BRE W n Pre set the percent contact wear for each p...

Page 552: ... of the 24 RTD inputs SEL 387 5 and SEL 387 6 Relays only OPE n Assert the OCn Relay Word bit Used to open breaker n if OCn is assigned to an output contact JMP6B has to be in place to enable this command PUL y k Pulse output contact y y OUT101 OUT107 OUT2XX and OUT3XX Enter number k to pulse for k sec onds k 1 to 30 seconds otherwise pulse time is 1 second JMP6B has to be in place to enable this ...

Page 553: ...emperature inputs received from an SEL 2032 an SEL 2030 or an SEL 2020 Communications Processor TIM Show or set time 24 hour time Show time presently in the relay by entering just TIM Example time 22 47 36 is entered with command TIM 22 47 36 TRI Trigger an event report Access Level 2 Commands The Access Level 2 commands primarily allow the user to change settings or operate relay parameters and o...

Page 554: ... latest event reports HIS C Clear the brief summary and corresponding standard event reports ID Display variety of identification and configuration information about the relay INI INITIO command reports the number and type of I O boards in the relay In Access Level 2 confirms that I O boards are correct IRI Force synchronization attempt of internal relay clock to IRIG B time code input MET k Displ...

Page 555: ...ttings If parameter n is not entered setting editing starts at the first setting SET G Change global settings SET P n Change port settings SET R Change Sequential Events Recorder SER settings SHO n Show relay group n settings Shows active group if n is not specified SHO G Show relay global settings SHO P Show port settings and identification of port to which user is connected SHO P n Show port set...

Page 556: ...x to day y If x and y are omitted retrieves entire profile data If x or y is omitted retries profile from day x y to present THE P n Loads preset value of accumulated insulation loss of life THE R Clears the hourly profile daily profile and thermal event data archives and resets the total loss of life values THE T Displays the four temperature inputs received from an SEL 2032 an SEL 2030 or an SEL...

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Schweitzer Engineering SEL-387-0, Instruction Manual

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