Thytronic NV021 Manual Download Page 134

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134

NV021 - Manual - 08 - 2012

APPENDIX

DESCRIPTION

PARAMETER

UNIT

SETTING RANGE

Timer 17

0 ... 59 step = 1
60 ... 3540 step = 60
3600 ... 86400 step = 600

Timer 18

0 ... 59 step = 1
60 ... 3540 step = 60
3600 ... 86400 step = 600

Timer 19

0 ... 59 step = 1
60 ... 3540 step = 60
3600 ... 86400 step = 600

Timer 20

0 ... 59 step = 1
60 ... 3540 step = 60
3600 ... 86400 step = 600

Timer 21

0 ... 59 step = 1
60 ... 3540 step = 60
3600 ... 86400 step = 600

Timer 22

0 ... 59 step = 1
60 ... 3540 step = 60
3600 ... 86400 step = 600

Timer 23

0 ... 59 step = 1
60 ... 3540 step = 60
3600 ... 86400 step = 600

Timer 24

0 ... 59 step = 1
60 ... 3540 step = 60
3600 ... 86400 step = 600

ARF - 1

Enable

OFF | ON

Selection

Aux1 | Aux2

Up frequency limit

50.00 ... 60.00 step = 0.05

Low frequency limit

40.00 ... 50.00 step = 0.05

Up frequency band limit

50.00 ... 60.00 step = 0.05

Low frequency band limit

40.00 ... 50.00 step = 0.05

Timer

0 ... 59 step = 1
60 ... 1000 step = 10

ARF - 2

Enable

OFF | ON

Selection

Aux1 | Aux2

Up frequency limit

50.00 ... 60.00 step = 0.05

Low frequency limit

40.00 ... 50.00 step = 0.05

Up frequency band limit

50.00 ... 60.00 step = 0.05

Low frequency band limit

40.00 ... 50.00 step = 0.05

Timer

0 ... 59 step = 1
60 ... 1000 step = 10

Circuit Breaker supervision

LEDs-relays allocation

Open CB command relays

CBopen-K

K1 | K2 | K3 | K4 | K5 | K6

Close CB command relays

CBclose-K

K1 | K2 | K3 | K4 | K5 | K6

CB Closed LEDs

CBclose-L

START | TRIP | L1 | L2 | L3 | L4 | L5

CB Open LEDs

CBopen-L

START | TRIP | L1 | L2 | L3 | L4 | L5

CB State diagnostic relays

CBdiag-K

K1 | K2 | K3 | K4 | K5 | K6

CB Diagnostic

Number of CB trips mode

ModeN.Open

OFF | ON

Summary of Contents for NV021

Page 1: ...NV021 Manual 08 2012 MANUAL NV021 LOM PROTECTION RELAY VOLTAGE AND FREQUENCY PROTECTION FOR LOW VOLTAGE APPLICATIONS ...

Page 2: ... 13 3 2 INPUT CIRCUITS 14 Auxiliary power supply Uaux 14 Voltage input circuits 14 Binary input circuits 14 3 3 OUTPUT CIRCUITS 14 Relays 14 3 4 MMI 14 3 5 COMMUNICAtION CIRCUITS 14 Local port 14 Remote ports 14 3 6 GENERAL SETTINGS 15 3 7 PROTECTIVE ELEMENTS 15 Thermal protection with Pt100 probes 26 15 Undervoltage 27 15 Positive sequence undervoltage 27V1 15 Overvoltage 59 16 Ten minutes overvo...

Page 3: ...d 81O 62 Frequency rate of change 81R 64 Breaker failure BF 68 4 5 CONTROL AND MONITORING 70 Logic block Block1 70 Remote tripping 72 Frequency tracking 73 Trip Circuit Supervision 74TCS 74 Circuit breaker supervision 77 Oscillography 78 5 MEASURES LOGIC STATES AND COUNTERS 79 Measures 79 Protection 79 Delayed inputs 79 Internal states 79 Relays 79 Counters 79 Self test 80 Fault recording SFR 80 E...

Page 4: ...4 NV021 Manual 08 2012 8 5 APPENDIX B DIMENSIONS 107 8 6 APPENDIX C SETTING TABLE 108 8 7 APPENDIX D REVISION HISTORY 145 8 8 APPENDIX E EC DECLARATION OF CONFORMITY 146 ...

Page 5: ... following symbols Installation and commissioning must be carried out by qualiﬁed person Thytronic assumes no re sponsibility for damages caused from improper use that does not comply all warning and caution in this manual In particular the following requirements must be met Remove power before opening it Verify the voltage absence by means suitable instrumentation on relay connections attention m...

Page 6: ...Note Useful description note Glossary definitions 27 Undervoltage ANSI code 27V1 Positive sequence undervoltage ANSI code 59 Overvoltage ANSI code 59V2 Negative sequence overvoltage ANSI code 59Uavg Ten minutes Overvoltage 81O Overfrequency ANSI code 81U Underfrequency ANSI code 81R Frequency rate of change ANSI code 74TCS Trip Circuit Supervision BF Breaker Failure DFR Digital Fault Recorder Osci...

Page 7: ...itions The dropout ratio may be lower or greater than 1 according as an over or under element is considered Reset time Duration of the time interval between the instant when the charac teristic quantity in operate condition is changed under speciﬁed conditions and the instant when the relay operates The stated reset time is related to a step variation of characteristic quantity in operate conditio...

Page 8: ... to the 2nd threshold of the 59 element It is not available for reading missing arrow AND and NAND logic gates OR and NOR logic gates Limit block U threshold Computation block Max phase voltage Threshold setting e g pickup U The value is available for reading and is adjustable by means ThySetter MMI Switch ON delay timer with reset tON delay ON delay timer without reset tON delay OFF delay timer d...

Page 9: ...FF tOFF Minimum pulse width operation for output relays tTR tTR t tTR INPUT OUTPUT tTR 0 T tTR t tTR INPUT OUTPUT Latched operating mode for output relays and LEDs Pulse operating mode for output relays t INPUT OUTPUT Latched tTR T 0 RESET OFF delay timer dropout with reset tOFF delay ...

Page 10: ...e operator panel Other options are Auxiliary power supply operating range Communication protocols Input circuits for direct connection Three voltages line to line with nominal voltages programmable in the range 200 520 V UR 400V are available 74TCS BF 27 27V1 81O 81R 81U 59V2 59 DDI 59Uavg PROTECTION RELAY NV021 Protective control functions 27 Phase undervoltage 27V1 Positive sequence undervoltage...

Page 11: ...ng a switching type voltage stabilizing circuit having a very wide working range and a very small power dissipation Nominal frequency 50 or 60 Hz The most signiﬁcant operating features are Programming of operating modes and parameters by means of the front keys and alphanumeric display with a programming procedure based on carrying out guided selections and on explicit and immediate signalling of ...

Page 12: ...ility requirements for measuring relays and protection equipment EN 60255 26 Apparati di automazione e controllo per centrali e stazioni elettriche Compatibilità elettromagnetica Immunità ENEL REMC 02 Normativa di compatibilità elettromeccanica per apparati e sistemi ENEL REMC 01 Voltage dip and interruption Reference standards EN 61000 4 29 IEC 60255 22 11 Voltage dips short interruptions and vol...

Page 13: ... MHz 30 A m Damped oscillatory wave 1 MHz 30 A m Emission Reference standards EN 60255 25 IEC 60255 25 EN 61000 6 4 IEC 61000 6 4 EN 55011 CISPR 11 Electromagnetic emission tests Conducted emission auxiliary power supply 0 15 0 5 MHz 79 dB μV Conducted emission auxiliary power supply 0 5 30 MHz 73 dB μV Radiated emission 30 230 MHz 40 dB μV m Radiated emission 230 1000 MHz 47 dB μV m Mechanical te...

Page 14: ...rative range 24 265 V Min activation voltage UDIGmin 18 V Max consumption energized IDIG 3 mA 3 3 OUTPUT CIRCUITS Relays Quantity 6 Type of contacts K1 K2 changeover SPDT type C Type of contacts K3 K4 K5 make SPST NO type A Type of contacts K6 break SPST NC type B Nominal current 8 A Nominal voltage max switching voltage 250 V 400 V Breaking capacity Direct current L R 40 ms 50 W Alternating curre...

Page 15: ...0 Un step0 01Un U inv Operating time tU inv 0 10 100 0 s 0 10 9 99 s step 0 01 s 10 0 100 0 s step 0 1 s Element U Deﬁnite time 27 Second threshold deﬁnite time U def 0 05 1 10 Un step0 01Un U def Operating time tU def 0 07 100 0 s 0 07 9 99 s step 0 01 s 10 0 100 0 s step 0 1 s Pickup time 0 04 s Dropout ratio 1 03 1 05 Dropout time 0 04 s Overshoot time 0 03 s Pickup accuracy 1 1 Un En Operate t...

Page 16: ...U2 Element Deﬁnite time 59V2 First threshold deﬁnite time U2 def 0 01 0 50 Un step 0 01 Un U2 def Operating time tU2 def 0 07 100 0 s 0 07 9 99 s step 0 01 s 10 0 100 0 s step 0 1 s Pickup time 0 04 s Dropout ratio 0 95 0 98 Dropout time 0 04 s Overshoot time 0 03 s Pickup accuracy 1 1 Un Operate time accuracy 5 or 10 ms Underfrequency 81U f Element Deﬁnite time 81U First threshold deﬁnite time f ...

Page 17: ... ratio 1 002 Dropout time 0 04 s Overshoot time 0 04 s Pickup accuracy 20 mHz Operate time accuracy 1 5 10 ms 1 Overfrequency 81O f Element Deﬁnite time 81O First threshold deﬁnite time f def 1 000 1 200 fn step 0 001 fn f def Operating time tf def 0 05 100 00 s 0 05 9 99 s step 0 01 s 10 0 100 0 s step 0 1 s Voltage control f Control enable f ON OFF f Controlled by UE start f UE ON OFF f Controll...

Page 18: ...ime df def 0 1 10 0 Hz s step 0 1 Hz s df def Operating time tdf def 0 00 100 0 s 0 00 0 99 s step 0 01 s 10 0 100 0 s step 0 1 s df Element df Operating mode Mode df Module Positive Negative Deﬁnite time 81R Fourth threshold deﬁnite time df def 0 1 10 0 Hz s step 0 1 Hz s df def Operating time tdf def 0 00 100 0 s 0 00 0 99 s step 0 01 s 10 0 100 0 s step 0 1 s Pickup time 0 3 s with setting df 0...

Page 19: ...e IN27 IN42 with two MID16 modules Delayed binary inputs 7 IN1 IN2 on board IN8 IN10 with MRI module IN11 IN26 with one MID16 module IN27 IN42 with two MID16 modules Start all elements Start U Start U etc Trip all elements Trip U Trip U etc Measures UL1 UL2 ecc Temperature Pt100 Outputs Relays K11 K6 on board K7 K10 with MRI module LEDs START TRIP L1 L6 on board L7 L10 with MRI module Current conv...

Page 20: ...oltage U1 Negative sequence voltage U2 Frequency rate of change df dt Medie Ten minutes voltages refresh 3 s UL1avg UL2avg UL3avg Max voltage between UL1avg UL2avg UL3avg ULavgmax PT100 1 Temperature PT1 T1 Temperature PT2 T2 Temperature PT3 T3 Temperature PT4 T4 Temperature PT5 T5 Temperature PT6 T6 Temperature PT7 T7 Temperature PT8 T8 Note 1 The measures of temperature are available only when t...

Page 21: ...485 RELAYS K1 K6 Output contacts RS232 MMI LCD LEDs BINARY INPUTS IN1 Input IN2 BLOCK I O BLKIN Input BLKOUT POWER SUPPLY EXTERNAL MODULES 5 V 10 V 0 V 24 V 10 V POWER FAIL RESET Uaux hw ai RTC EEprom Flash SRam SRam SPI CPU ETHERNET CPU BOARD POWER SUPPLY BOARD INPUT MODULE VTs DSP DUAL PORT EEprom Thybus RS485 RELAYS K1 K6 Output contacts RS232 MMI LCD LEDs BINARY INPUTS IN1 Input IN2 BLOCK I O ...

Page 22: ...m which allows the attainment of information pertaining to polarity and amplitude with high resolution The measurement criterion allows precise measurement of even those signals having a unidirectional component such as transient currents with overlapping exponential which typically appear during faults The circuit board also houses the output relays with the corresponding command and control cir ...

Page 23: ...he task process e thread are the base components Example are Keyboard management RTC Real Time Clock updating RAM EEPROM updating Diagnostic Input acquisition Output relay management MMI I O updating DSP data processing DSP Firmware sw ai KEYS PC com Sync Binary inputs Output relays LEDs Fast devices EEPROM Slow devices RTC refresh EEPROM update Diagnostic DSP MMI task Oscillography Measures Drive...

Page 24: ...ol BP manages the service communication between the kernel and the other modules through the communication buses with the following services Data and information exchange Calibration Upgrade fw DSP Upgrade application sw Communication drivers The ModBus TCP IP protocol with ethernet interface the ModBus RTU IEC 60870 5 103 and DNP3 protocol over RS485 interface and the ModBus RTU RS232 for ThySett...

Page 25: ...sources concerning the priority for tasks conditioning circuits DSP and CPU are on hand uL1 uL3 Input voltage instantaneous values From the sampled quantities several measures are computed for protection monitoring and meter ing purposes Direct Calculated Average Direct Frequency The measure of period is taken from voltage inputs Samples are processed by means DFT Discrete Fourier Transform algori...

Page 26: ...t 600 0 2 3000 values squared The aggregation of 10 minutes is updated every 3 s In response to a step change of the input voltage U with voltage initially already stabilized the volt age Um has a transitional trend with square law as shown in the following ﬁgure Nota 1 Calcolate sulle tre tensioni concatenate U2 ai UL1 U1 U2 UL1 e j120 UL2 e j120 UL3 3 U1 UL1 e j120 UL2 e j120 UL3 3 UL3 UL2 e j12...

Page 27: ... phase rotating voltages a direct cyclic sequence is deﬁned when the three phases are L1 L2 L3 ordered while an inverse cyclic sequence is deﬁned when the three phases are L1 L3 L2 ordered fasori ai fasori ai fasori1 ai UL1 UL3 UL2 UL1 UL2 UL3 Direct sequence cyclic order Inverse sequence cyclic order fasori1 ai UL1 UL3 UL2 UL1 UL2 UL3 Direct sequence cyclic order Inverse sequence cyclic order ...

Page 28: ... Overfrequency 81O g g g g g g Frequency rate of change 81R g g g g g g Breaker failure BF g g g g g g CONTROL MONITORING Trip Circuit Supervision TCS g Automatic reclosure optional g g g g MEASURES Frequency g Phase to phase voltage g Positive voltage g Negative voltage g Frequency rate of change g Temperature Pt100 with MPT module g EVENTS RECORDING Event 0 g g g g g Event g g g g g Event 299 g ...

Page 29: ...ransition is acquired if the input is permanently high for a time interval longer than the tOFF setting delay In the above shown diagram INTERNAL STATE represents the logical state of the binary input used in the following processing Each binary input may be matched to one of the following default functions FUNCTIONS Binary inputs IN1 IN2 Reset LEDs g g Set profile switching setting A and B g g Fa...

Page 30: ...f LED relay Reset LEDs Binary input allocation for reset signalling LEDs T 0 INx tON T 0 n o n c INx tON Logic INx tOFF INx tOFF Binary input INx x 1 2 Switch proﬁle ai A B from binary input OFF Proﬁle A ON Proﬁle B Binary input allocation for switching of setting proﬁles Proﬁle A Proﬁle B Proﬁle A Proﬁle selection Proﬁle B Set proﬁle T 0 INx tON T 0 n o n c INx tON Logic INx tOFF INx tOFF Binary ...

Page 31: ...ed for being blocked from Block1 Note 3 The reset of the total counters is practicable by means ThySetter command with Session Level 1 available with password Block1 ai xxxx Block1 Enable ON Enable Block1 input ON Block Block1 Block1 Block1 Binary input IN1 Binary input allocation for logic block Block1 Blocking T 0 IN1 tON T 0 n o n c IN1 tON Logic IN1 tOFF IN1 tOFF Block1 ai xxxx Block1 Enable O...

Page 32: ...N2 tOFF Binary input allocation for CB remote driving TRIPPING M ATRIX LED REL AYS UAUX UAUX 52a 52 O I 52b CB com ai OPEN command CLOSE command UAUX UAUX UAUX IN IN Open CB IN IN Binary input IN1 T 0 IN1 tON T 0 n o n c IN1 tON Logic Close CB IN1 tOFF IN1 tOFF Binary input IN2 T 0 IN2 tON T 0 n o n c IN2 tON Logic IN2 tOFF IN2 tOFF Binary input allocation for CB remote driving TRIPPING M ATRIX LE...

Page 33: ...il a reset command is issued RESET key ThySetter or communication command When pulse operating mode is set Operation MODE Pulse the output relay reset after a tTR programmable delay regardless of the trip condition It is advisable to make sure that the output contact technical data are suitable for load Nominal current breaking capacity make current switching voltage Matching every output relay to...

Page 34: ... Trip relays f TR K g g g g g g f Trip relays f ST K g g g g g g f Trip relays f TR K g g g g g g f Start relays f ST K g g g g g g f Trip relays f TR K g g g g g g f Start relays f ST K g g g g g g f Trip relays f TR K g g g g g g f Start relays f ST K g g g g g g f Trip relays f TR K g g g g g g df Start relays df ST K g g g g g g df Trip relays df TR K g g g g g g df Start relays df ST K g g g ...

Page 35: ... trip condition Latched the LED doesn t reset at the end of the trip condition it stays ON until a manual reset com mand is issued RESET key ThySetter or communication command Any change to the settings can be affected at any time also with the relay on duty separately for each LED Programming and or conﬁguration changes can be carried out at any time separately for each LED by setting the paramet...

Page 36: ...T L g g g g g g g f Trip f TR L g g g g g g g f Trip f ST L g g g g g g g f Trip f TR L g g g g g g g f Start f ST L g g g g g g g f Trip f TR L g g g g g g g f Start f ST L g g g g g g g f Trip f TR L g g g g g g g f Start f ST L g g g g g g g f Trip f TR L g g g g g g g df Start df ST L g g g g g g g df Trip df TR L g g g g g g g df Start df ST L g g g g g g g df Trip df TR L g g g g g g g df St...

Page 37: ...his is a con nection oriented transaction which means every query expects a response This query response technique ﬁts well with the master slave nature of ModBus adding to the de terministic advantage that Switched Ethernet offers industrial users In the same way as the RS485 base Modbus every device is identiﬁed by a personal address and the communication goes in client server mode with answerin...

Page 38: ...nominal frequency fn This nominal value must be set same as the frequency of the grid Example grid frequency fn 50 Hz Relay nominal frequency fn 50 Hz Relay nominal voltage Un The Un relay nominal voltage must be set to the value of relay input voltages at grid nominal volt age Example 1 The relay nominal voltage may be set to Un Ung 400 V Example 2 The relay nominal voltage may be set to Un Ung 2...

Page 39: ...st be adjusted to Unp grid nominal voltage V Example The primary nominal voltage may be set to Unp Ung 400 V Measurement reading mode Measures may be displayed according the following operating modes With RELATIVE setting all measures are related to the nominal value With PRIMARY setting all measures are related to the primary value Es3a Un ai Ung 400 V Un 400 V 52 NV021 Es3a Un ai Ung 400 V Un 40...

Page 40: ...alised overheating due to worn or non lubricated bearings The Pt100 probes detect the temperature in the range 50 C 250 C at 0 C its resistance is 100 ohm an alarm indicates any interruption or short circuiting of the probe or related connections to the MPT module the information is available inside the Read PT100 menu Ptx probe ON to point a measure inside the range Ptx probe LOW to point a measu...

Page 41: ...et Proﬁle A or B Thermal protection with RTD thermometric probes 26 PTx Probe ThALx Trip where x 1 8 1 Note 1 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure BF menu Fun F26 ai T 245 0 C T Ptx Ptx Pt1 Pt2 Pt3 Pt4 Pt5 Pt6 Pt7 Pt8 0 T TRIPPING M ATRIX LED REL AYS T ThALx Pt100 x Trip Pt100 xAlarm tTh x tThALx BF Enable ON Enable Pt100 OK Pt100 ...

Page 42: ...programmed with deﬁnite or inverse time characteristic by setting the U Curve parameter DEFINITE INVERSE available inside the Set Proﬁle A or B Undervoltage 27 U Element Setpoints menu Each element can be enabled or disabled by setting ON or OFF the U Enable parameter inside the Set Proﬁle A or B Undervoltage 27 U Element Setpoints menu and or the Stateparameter inside the Set Proﬁle A or B Underv...

Page 43: ...sable 27 function by operator Logic diagram concerning the ﬁrst threshold U of the undervoltage element 27 Fun F27_S1 ai U Inhibition ON Inhibit U Curve 0 T RESET tU 0 T TRIPPING M ATRIX LED REL AYS tU def tU inv Start U U ST K Start U U TR K U ST L U TR L Trip U Trip U Trip U BF Enable ON Enable U BF towards BF logic BLK1U U BF Enable ON Enable Block1 input ON Block U BLK1 Block1 Block1 Logic27 1...

Page 44: ...t inside the Set Inputs Binary input IN1 x menus IN1 or INx matching Note 1 The exhaustive treatment of the logical block Block 1 function may be found in the Logic Block paragraph inside CONTROL AND MONITOR ING section Fun F27_S2 ai RESET tU 0 T TRIPPING M ATRIX LED REL AYS tU def Start U Start U Trip U Trip U Trip U BF Enable ON Enable towards BF logic U BF Enable ON Enable Block1 input ON Block...

Page 45: ...aracteristic concerning the ﬁrst threshold U of the undervoltage element 27 0 9 0 1 1 U U inv 0 01 0 01 0 1 1 10 100 1000 10000 t s 0 25 tU inv 100 s tU inv 10 s tU inv 0 1 s tU inv 1 s t tU inv 1 U U inv 0 75 Note match of operating and setting time takes place when U U inv 0 25 ...

Page 46: ...7V1 U1 Element Setpoints menu 2 Logical block Block1 If the U1 BLK1 enabling parameter is set to ON and a binary input is designed for logical block Block1 the protection is blocked off whenever the given input is active The trip timer is held in reset condition so the operate time counting starts when the input block goes down 3 The enabling parameter is available inside the Set Proﬁle A or B Pos...

Page 47: ... L Trip U1 Trip U1 Trip U1 BF Enable ON Enable U1 BF towards BF logic BLK1U1 U1 BF Enable ON Enable Block1 input ON Block U1 BLK1 Block1 Block1 U1 Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF State U 1 U1 def U1 def ON Inhibit Disable 27 function by operator Logic diagram concerning the positive sequence undervoltage element 27V1 ...

Page 48: ...Range where the equation is valid 1 1 U U inv 4 If U inv pickup 0 5 Un the upper limit is 2 Un The ﬁrst overvoltage element can be programmed with deﬁnite or inverse time characteristic by setting the U Curve parameter DEFINITE INVERSE available inside the Set Proﬁle A or B Overvoltage 59 U Element Setpoints menu Each element can be enabled or disabled by setting ON or OFF the U Enable parameter i...

Page 49: ...aph inside CONTROL AND MONITOR ING section all F59 ai General logic diagram of the overvoltage elements 59 U U U Element U Element Start U Start U Start U Trip U Trip U U disbyU U inhibition tU def tU inv U def tU def U def U inv U Curve U Enable State Block1 BLK1U U BLK1 Start U Block1 BLK1U U BLK1 Start U U BF Trip U U BF AND U12 U23 U31 U UL1 OR Common conﬁguration Logic59 Fun F59_S1 ai U Curve...

Page 50: ...nable towards BF logic U BF Enable ON Enable Block1 input ON Block Block1 Block1 ON Inhibit U Inhibition U disbyU Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF U ST K U TR K U ST L U TR L U BF BLK1U U BLK1 Logic59 1 U23 U31 State U U def U def U12 UL1 Logic diagram concerning the second threshold U of the overvoltage element 59 ...

Page 51: ...nv 100 s t U inv 10 s t U inv 1 s t U inv 0 1 s 1 5 0 01 0 1 1 10 100 1000 10000 t s t tU inv U U inv 1 0 5 Inverse time operating characteristic concerning the ﬁrst threshold U of the overvoltage element 59 Note match of operating and setting time takes place when U U inv 1 5 ...

Page 52: ...f three voltages is compared with the setting values The start and trip logic may be selected OR or AND with OR selection a start is issued when at least one of the three voltages overcomes the adjustable threshold START after expiry of the as sociated operate time a trip command is issued if instead the average voltages drops below the threshold the element it is restored With AND selection a sta...

Page 53: ...avg Trip Uavg tUavg def Uavg def Uavg Enable Block1 BLK1Uavg Uavg BLK1 Start Uavg Uavg BF Trip Uavg Uavg BF Um AND U12 U23 U31 U UL1 OR Common conﬁguration Logic59Uavg all F59Uavg ai General logic diagram of the average overvoltage elements 59Uavg U Uavg Element Start Uavg Trip Uavg tUavg def Uavg def Uavg Enable Block1 BLK1Uavg Uavg BLK1 Start Uavg Uavg BF Trip Uavg Uavg BF Um AND U12 U23 U31 U U...

Page 54: ...K1 enabling parameter is set to ON and a binary input is designed for logical block Block1 the protection is blocked off whenever the given input is active The trip timer is held in reset condition so the operate time counting starts when the input block goes down 3 The enabling parameter is available inside the Set Proﬁle A or B Negative sequence overvoltage 59V2 U2 Element Setpoints menu while t...

Page 55: ...2 ST L U2 TR L Trip U2 Trip U2 Trip U2 BF Enable ON Enable U1 BF towards BF logic BLK1U2 U2 BF Enable ON Enable Block1 input ON Block U1 BLK1 Block1 Block1 U2 Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF State U 2 U2 def U2 def Logic diagram concerning the threshold U2 of the negative sequence overvoltage element 59V2 ...

Page 56: ...yf parameter available inside the Set Proﬁle A or B Overfre quency 81O f Element Setpoints menu Breaker failure BF Both overfrequency elements f f can produce the Breaker Failure output if the f BF and f BF parameters are set to ON The parameters are available inside the Set Proﬁle A or B Overfrequency 81O f Element f Element Setpoints menus 1 Note 1 The common settings concerning the Breaker fail...

Page 57: ...G section Fun F81O_S1 ai f inhibition ON Inhibit RESET tf def 0 T TRIPPING M ATRIX LED REL AYS tf def f Start f Start f Trip f Trip f Trip BF Enable ON Enable f BF towards BF logic f Block1 f BF Enable ON Enable Block1 input ON Block Block1 Block1 f f def f def f UL1 UL2 UL3 Max UL1 UL3 20 Un Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF f ST K f ST L f TR K f TR L f BLK...

Page 58: ...lement Deﬁ nite time menu Note 1 For sensors inputs versions the frequency is measured on the phase voltages UL1 UL2 UL3 while for versions with inductive VTs inputs the frequency is measured on phase to phase voltages U12 U23 U31 On the diagrams UL1 UL2 UL3 are the input phase voltages or phase to phase according to the corresponding versions General operation time characteristic for the underfre...

Page 59: ...ameters are set to ON and a binary input is designed for logical block Block1 the protection is blocked off whenever the given input is active The trip timer is held in reset condition so the operate time counting starts when the input block goes down 1 The enabling parameters are available inside the Set Proﬁle A or B Underfrequency 81U f Element f Element f Element f Element Setpoints menus whil...

Page 60: ... f ST L f TR K f TR L f BLK1 Logic diagram concerning the second threshold f of the underfrequency element 81U RESET tf def 0 T TRIPPING M ATRIX LED REL AYS tf def f Start f Start f Trip f Trip f Trip BF Enable ON Enable towards BF logic f Block1 f BF Enable ON Enable From 4th element Block1 input ON Block Block1 Block1 Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF ON In...

Page 61: ...Enable Block1 input ON Block Block1 Block1 Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF ON Inhibit f inhibition f disbyf ON Inhibit f inhibition f disbyf ON Inhibit f inhibition f disbyf f f def f def f UL1 UL3 Max UL1 UL3 20 Un f BF Fun F81U_S4 ai f ST K f ST L f TR K f TR L f BLK1 Logic diagram concerning the fourth threshold f of the underfrequency element 81U ...

Page 62: ...V2 f 59V2 parameter start of ﬁrst threshold of the undervoltage element 27 programming ON the f U f U parameter loss of communication network from Goose IEC 61850 message programming ON the f rete61850 KO f rete61850 KO parameter The parameters listed above are available in the menus inside the menu Set Proﬁle A or B Underfrequency 81U f element Voltage control for parameters concern ing to the un...

Page 63: ...f 0 T tf def f f def U def f def tf def 0 T tf def f f def f def tf def 0 T tf def f f def f def tf def 0 T tf def f f def f def State Local command Local command State U12 U23 U31 directly measured phase to phase voltages Logic diagram concerning the NV021 voltage control OPEN CB COMMAND Binary input connected to remote trip external contact Remote trip Goose IEC61850 81O 81U ﬁrst threshold enabl...

Page 64: ...cally for speedup slowdown or any speed change of the generator the df operating mode can be set Mode df Mode df Mode df Mode df inside the Set Proﬁle A or B Frequency rate of change 81R df Element df Element df Element df Element Set points menu The trip of df element may be inhibited by the start of the second third and or fourth ele ment df df df by setting ON the Disable df by start df Disable...

Page 65: ...stive treatment of the logical block Block 1 function may be found in the Logic Block paragraph inside CONTROL AND MONITOR ING section all F81R ai Logic diagram concerning the frequency rate of change elements 81R 4th Pickup Element Block1 Block1 BF State df tdf df tdf df tdf df tdf df Start df Trip df Start df Trip df Start df Trip df Start df Trip df Start df Start df Start df Start df Start df ...

Page 66: ...Mode df df df def f UL1 UL1 20 Un 16 f 80 Hz Logic diagram concerning the second threshold df of the frequency rate of change element 81R Fun F81R_S1 ai RESET tdf def 0 T TRIPPING M ATRIX LED REL AYS df Start df Start df Trip df Trip df Trip BF Enable ON Enable towards BF logic Block1 df BF Enable ON Enable Block1 input ON Block df BLK1 df Block1 Block1 Binary input INx T 0 Logic INx tON INx tON I...

Page 67: ...UL1 UL1 20 Un 16 f 80 Hz Logic diagram concerning the fourth threshold df of the frequency rate of change element 81R RESET tdf def 0 T TRIPPING M ATRIX LED REL AYS tdf def df Start df Start df Trip df Trip df Trip BF Enable ON Enable towards BF logic df Block1 df BF Enable ON Enable Block1 input ON Block Block1 Block1 Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF ON Inh...

Page 68: ...N1 x menus IN1 or INx matching To enable the breaker failure protection to operate with trips coming from external protections one binary input must be designed to acquire the relative contacts The TripProtExt function must be assigned to the selected binary input inside the Set Inputs Binary input IN1 x menus IN1 or IN matching The tBF parameter available inside the Set Proﬁle A or B Breaker fail...

Page 69: ...e BF BLK1 Block1 52a RESET tBF 0 T tBF 1 Binary input INx x 1 8 16 T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF 52b Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF 52b BF ST K BF TR K BF TR L BF ST L Logic diagram conc...

Page 70: ...ET Operate time 0 T Generic protective element Measure Input TRIPPING M ATRIX LED REL AYS BLK1xxx Operate time Threshold Start Start Trip Trip Enable ON Enable Block1 input ON Block Customized Block1 info Block1 info internal state xxxBLK1 Block1 Block1 Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF Schema funzionale relativo al blocco logico Block1 Blocco_L ai RESET Oper...

Page 71: ...9 element U2 BLK1 59V2 element Uavg BLK1 59Uavg element f BLK1 81O element f BLK1 81O element f BLK1 81U element f BLK1 81U element f BLK1 81U element f BLK1 81U element U BLK1 59 element 74TCS BLK1 74TCS element BF BLK1 BF element Block1 Binary input INx T 0 Logic INx tON INx tON INx tOFF T 0 n o n c INx tOFF df BLK1 81R element df BLK1 81R element df BLK1 81R element df BLK1 81R element Logic di...

Page 72: ...e RemTrip K matching must be assigned to the selected output relays inside the Set Remote tripping submenu the same for addressing the LED indicators RemTrip L When output relays are programmed for remote tripping the tTR time delays must reset to zero the operation mode must be set with self reset No latched inside Set Relays submenu and the Logicparameters Energized De energized must be programm...

Page 73: ...r value 20 or 63 Hz All protective elements are always operative accuracy is guaranteed inside locked frequency band Note 1 For inputs from sensors versions the frequency is measured on the phase voltages UL1 UL2 UL3 while for versions with inputs from inductive VTs the frequency is measured on line to line voltages U12 U23 U31 Inside the diagrams UL1 UL2 UL3 are the input phase to neutral or phas...

Page 74: ...the input block goes down The 74TCS BLK1 parameter is available inside the Set Proﬁle A B Trip circuit supervision 74TCS submenu All the parameters can be set separately for Proﬁle A and Proﬁle B Two inputs supervision With two binary input all malfunctions are detected inclusive of mechanics faults The binary inputs are connected to the trip and to the 52b contacts The CB auxiliary voltage must b...

Page 75: ... s delay in order to allow the fault clearing and the consequent reset of the TRIP protection Outputs are reset to zero after 6 s from the TRIP contact open 1 Note 1 The trip contact TRIP of the protection relays must be set with automatic reset No latched operating mode TCS1 ai TRIP R UAUX UAUX 52a 52b 52 Pro N Binary input INx TCS1 Towards 74TCS logic Trip circuit supervision with one binary inp...

Page 76: ...fy the above requirements the R value must be chosen between the Rmin and Rmax values typically the normalized value nearest the arithmetic mean R Rmin Rmax 2 The power dissipated by the R resistor is PR R I 2 R UAUX R RTC 2 Example UAUX 110 Vcc auxiliary voltage PTC 50 W coil power RTC UAUX 2 PTC 242 Ω coil resistance UTCmin 77 V minimum coil excitation voltage 70 UAUX UDIGmin 18 V minimum binary...

Page 77: ...K and CBclose K function must be set inside the Set Circuit breaker supervision LEDs relays allocation menu the CB position can be visualized by means two LEDs CBopen L and CBclosed L parameters All the parameters are common for Proﬁle A and Proﬁle B CIRCUIT BREAKER DIAGNOSTIC Four different criteria can be select Number of CB trip mode ModeN Open ON When the number of operations N Open is ex ceed...

Page 78: ...ffer alarm when the 80 of the buffer space is reached an alarm may be issued if the parameter is set to ON Set sampled channels The desired sampled quantities may be select inside the Set Oscillography Set sampled channels menu uL1 uL2 uL3 Set analog channels The desired sampled quantities may be select inside the Set Oscillography Set analog channels menu Everyone of twelve analog channel may be ...

Page 79: ...r ON OFF Block1 ON OFF Tcs1 ON OFF Tcs2 ON OFF Trip External protections ON OFF Reset partial counters ON OFF Reset CB monitoring data ON OFF 52a ON OFF 52b ON OFF Open CB ON OFF Close CB ON OFF Thermal image presetting ON OFF Remote trip ON OFF 74VT ext ON OFF f f Control ON OFF Relays For every output relay the output operating state and diagnostic are available Read Relays menu K1 State ON OFF ...

Page 80: ...hing PLC I O assigned not matching OK NOT OK PLC I O assigned not matching run time majorOK NOT OK PLC I O assigned not matching run time minorOK NOT OK Total PLC I O assigned not matching 0 PLC I O assigned not matching MMI module Boot OK NOT OK MMI module Run time OK NOT OK MRI module Boot OK NOT OK MRI module Run time OK NOT OK MID16 1 module Boot OK NOT OK MID16 1 module Run time OK NOT OK MID...

Page 81: ...em being of linear type the records are back to back recorded to the end of available memory the alarm output is a warning in order that the user may download the data FLASH 3 to clear memory for new records Following parameters are user programmable Sample channels Instantaneous value for input voltages uL1 uL2 uL3 Analog channels Frequency f Fundamental component for input phase voltages UL1 UL2...

Page 82: ...c variables K1 K2 K3 K4 K5 K6 IN1 IN2 305 record can be stored if f 50 Hz since Example 2 With following setting Pre trigger 0 5 s Post trigger 0 5 s Sampled data uL1 uL2 uL3 Analog measures UL1 UL2 UL3 Digital channels K1 K2 K3 K4 K5 K6 IN1 IN2 up to 254 records can be stored if f 60 Hz since N int 24 24 vi 4 vRMS nB 600 tpre tpost s 59 s f Hz 50 Hz N int 24 24 vi 4 vRMS nB 600 tpre tpost s 59 s ...

Page 83: ...lability Flush mounting The ﬁxed case ﬁtted with special fastening brackets is mounted on the front of electric control board previously drilled as indicated in the drawing In case of side by side mounting of several relays the minimum drilling distance is determined by the front dimensions indicated in the overall dimensions drawing increased by 3 mm to ensure an adequate tolerance and gasket spa...

Page 84: ...g distance is determined by the dimensions of the mounting plate indicated in the overall dimensions drawing increased horizontally and vertically by as much as needed to allow room for the wiring and to ensure an adequate toler ance between the apparatus Remove tile ai Removing tie to access the fastening screws Remove tile ai Removing tie to access the fastening screws Flush mount1 ai Four screw...

Page 85: ...d for connections Separate mount ai F1 D1 RX TX F2 F3 F4 F5 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 B1 B2 B3 B4 B5 B6 B7 B8 C1 C2 C4 C3 C5 C6 C7 C8 E1 128 5 110 200 168 20 30 5 212 5 170 107 177 ON 4 1 3 2 5 TRIP START Separate operator panel Separate mount ai F1 D1 RX TX F2 F3 F4 F5 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A...

Page 86: ...oor a one unit space must be provided when several rack are overlapping mounted Rack mount ai Rack mounting 177 4U 101 6 482 6 465 ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START Rack mount ai Rack mounting 177 4U 101 6 482 6 465 ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START Rack mount1 ai Rack mounti...

Page 87: ...section Tightening torque 0 5 0 6 Nm Stripping length 7 mm For the F1 F5 RS485 connections screw terminals with following characteristics are available Nominal cross section da 0 2 a 2 5 mm2 AWG 24 12 for single conductor da 0 2 a 1 5 mm2 for two conductors with same cross section Tightening torque 0 5 0 6 Nm Stripping length 10 mm Devices must be installed by qualiﬁed personnel only No liability ...

Page 88: ...e applied load about current nominal voltage make and break current etc Output relay K1 and K2 have one change over contacts SPDT type C Output relay K3 and K4 have one make contact SPST NO type A and a common reference A10 terminal Output relay K5 and K6 have one make contact SPST NO type A for K5 one break contact SPST NC type B for K6 and a common reference A13 terminal All contacts are shown i...

Page 89: ...verter suit able for 100 Mb data rate must be employed The link must be enabled by means ThySetter sw and RS232 connection Set the IP address Host IP address e IP net mask in order that the NV10 and PC parameters are matched the parameters are inside the Communication Ethernet submenu Set to OFF the Autonegotiation parameter of NV10 device Autonegotiation parameter inside Communication Ethernet su...

Page 90: ...nt connecting the specially provided resistor termination can be made by means a jumper between the F2 F3 terminals Termination resistors allow adjusting the impedance of the line reducing the inﬂuence of the induc tive components of the same which might compromise good communication RS485 120 Ω SUPERVISION UNIT OUTPUT RELAYS UAUX A1 A2 A9 A10 A11 A12 A13 A14 E1 THYBUS D1 ETHERNET A3 A4 A5 A6 A7 A...

Page 91: ...OUT BLOUT A16 BINARY INPUTS A19 IN1 IN2 A20 A21 A22 BLOCK IN A17 A18 RS232 FRONT PANEL 34 36 35 30 32 33 31 28 29 43 44 45 39 40 42 41 38 37 52 54 53 48 50 51 49 46 47 MODULO INGRESSI REMOTI INPUT OUTPUT ON RUN BUS 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 21 20 19 25 23 22 24 27 26 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 21 20 19 25 23 22 24 27 26 MID 16 34 36 35 30 32 33 31 28 29 43 44 4...

Page 92: ...ess must be changed on one module by means of dip switch on the top circuit board front plate must be removed Turn on power Go on to the sw setting see SETTING section of instruction manual Note 1 The insertion order is free One MRI module two MID16 modules one MPT module one MCI module and one MMI module separate operator panel can be connect at the same time to the Thybus port maximum expansion ...

Page 93: ...or start information of any protective functions LED TRIP red committed for trip information of any protective functions 6 5 FINAL OPERATIONS Before energizing the electric board it is advisable to check that The auxiliary voltage in the panel falls within the operative range of Pro_N relays The relay rated voltage 100 V or 400 V corresponds to the Pro_N input voltages All wirings are correct All ...

Page 94: ...enu set up and the relationships to data concerning all Thytronic protective relays by means of XML ﬁles ThySetter installation The latest release of ThySetter can be downloaded free of charge from the www thytronic it site Software ThySetter area download ThySetter use Please refer to ThySetter user manual for detailed instructions The document is available on www thytronic it site WARNING For sa...

Page 95: ...mands open Close At power up the display shows the text THYTRONIC Pro_NV021 MB0 x date and time 01 01 2000 00 00 The ON green Led points out the auxiliary power supply voltage permanent lighted and possible faults blink lighted The display backlight is automatically activated when any key switch is set By means of the Up or Down buttons it is possible to cyclically browse through the menu options ...

Page 96: ...e auxiliary power supply As example to set the operating mode of the K1 output relay as ENERGIZED LATCHED the following procedure must be issued By means Down button select the Set menu SET Press the Right button to enter the following submenu title i displayed BASE Scroll menus by means Down button INPUTS RELAYS LEDS SELF TEST RELAY ENABLE SETTING BY MMI PROFILE SELECTION PROFILE A PROFILE B PLC ...

Page 97: ...e and press the Right button to end the test In any case the test will be automatically terminated after a delay of one minute COMMUNICATION Inside the COMMUNICATION menu it is possible to read modify the setting data of the RS485 Proto col and Ethernet parameters By means of Up or Down buttons it is possible to browse the main menu till the RS485 Protocol or Ethernet parameters message to enter y...

Page 98: ...avg OFF 59Uavg Trip U OFF BLK1 U OFF Start U OFF Trip U OFF BLK1 U OFF Start U OFF 59 74TCS BF BLK1 74TCS OFF Trip 74TCS OFF Start 74TCS OFF 74TCS Start BF OFF Trip BF OFF BLK1 BF OFF Trip Int Ext OFF BF MEASURES ULmax 0 000 Un UL 0 000 Un UL1 0 000 Un UL2 0 000 Un UL3 0 000 Un UE 0 000 UEn UEC 0 000 UECn UL3avg 0 000 Un ULavgmax 0 000 Un UL1avg 0 000 Un UL2avg 0 000 Un U1 0 000 Un f 0 000 Hz df d...

Page 99: ...StU cnt 0 TotRtU cnt 0 27V1 Counters TotBk1U1 cnt 0 TotStU1 cnt 0 TotTrU1 cnt 0 59Uavg Counters TotBk1Uavg cnt 0 TotStUavg cnt 0 TotTrUavg cnt 0 59V2 Counters TotBk1U2 cnt 0 TotStU2 cnt 0 TotTrU2 cnt 0 BF Counters TotBk1BFcnt 0 TotStBFcnt 0 TotTrTrcnt 0 74TCS Counters TotBk1 74TCScnt 0 TotTr74TCScnt 0 81O Counters TotBk1 f cnt 0 TotTr f cnt 0 TotSt f cnt 0 TotTr f cnt 0 TotSt f cnt 0 TotBk1 f cnt ...

Page 100: ...ST K U1 ST L U1 TR L LEDs U1 59 U Element Common U Element Logic59 OR U Enable OFF U def enable OFF U def 1 Un tU def 1 s U inv enable OFF U inv 1 Un tU inv 10 s U BLK1 OFF U BF OFF Type Characteristic U Curve DEFINITE Relays U U TR K U ST K U ST L U TR L LEDs U U def enable OFF U def 1 Un tU def 1 s U BLK1 OFF U disbyU OFF U BF OFF Relays U U TR K U ST K U ST L U TR L LEDs U Common Uavg Element 5...

Page 101: ...Element df Element df Element Mode df Module df def enable OFF df def 1 Hz s tdf def 1 s df BLK1 OFF df disbydf OFF df BF OFF Relays df df TR K df ST K df ST L df TR L LEDs df Mode df Module df def enableOFF df def 1 Hz s tdf def 1 s df BLK1 OFF df disbydf OFF df disbydf OFF df BF OFF Relays df df TR K df ST K df ST L df TR L LEDs df Mode df Module df defenableOFF df def 1 Hz s tdf def 1 s df BLK1...

Page 102: ...w the current values referred to the nominal current of the current transformers as directly in primary amperes according to the preset value of CT s nominal primary current the same is done for the input voltages If connected to the central control unit all data available on the display can be checked and pro cessed thus performing a continuous check and maintenance 7 5 REPAIR No repair of possib...

Page 103: ... UL3 B5 B6 B3 B4 B1 B2 NV021 UAUX A1 A2 OUTPUT RELAYS A9 A10 A11 A12 A13 A14 A3 A4 A5 A6 A7 A8 K2 K3 K4 K5 K6 K1 BINARY INPUTS A19 IN1 IN2 A20 A21 A22 B7 B8 VOLTAGE INPUTS F1 D1 RX TX F2 F3 F4 F5 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 B1 B2 B3 B4 B5 B6 B7 B8 E1 ...

Page 104: ...TPUT MPT ON BUS RUN MODULO PT100 PT100 MODULE INPUT OUTPUT MID16 ON BUS RUN MODULO INGRESSI REMOTI INPUT 34 36 35 30 32 33 31 28 29 43 44 45 39 40 42 41 38 37 52 54 53 48 50 51 49 46 47 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 21 20 19 25 23 22 24 27 26 34 36 35 30 32 33 31 28 29 43 44 45 39 40 42 41 38 37 52 54 53 48 50 51 49 46 47 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 21 20 19 25 23 2...

Page 105: ...PPENDIX 105 NV021 Manual 08 2012 8 3 APPENDIX A3 PROTECTIVE FUNCTIONS BINARY INPUTS NV021 BF A19 A20 A21 A22 U12 U23 U31 B5 B6 B3 B4 B1 B2 B7 B8 74TCS BF 27 27V1 81O 81R 81U 59V2 59 59Uavg Voltage inputs ...

Page 106: ...cts are shown in de energized state for standard reference NV021 sch ai L1 L2 L3 One phase grids NV021 DI Trip NV021 K1 G UAUX E1 THYBUS RS232 FRONT PANEL BF K2 RS485 F1 F2 F3 F4 F5 A B D1 ETHERNET UAUX UAUX A1 A2 B7 B8 VOLTAGE INPUTS B5 B6 B3 B4 B1 B2 UL1 UL2 UL3 UAUX A9 A10 A11 A12 A13 A14 A3 A4 A5 A6 A7 A8 K2 K3 K4 K5 K6 K1 OUTPUT RELAYS TRIP NV021 SELF diagnostic Breaker failure BF UAUX UAUX B...

Page 107: ...18 A19 A20 A21 A22 B1 B2 B3 B4 B5 B6 B7 B8 C1 C4 C3 C5 C6 C7 C8 E1 F1 D1 RX TX F2 F3 F4 F5 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 B1 B2 B3 B4 B5 B6 B7 B8 C1 C2 C4 C3 C5 C6 C7 C8 E1 128 5 110 200 168 20 ø 4 5 177 4U 101 6 482 6 465 ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START FLUSH MOUNTING PROJECTING MOUNTIN...

Page 108: ... Active ON Active OFF IN1 tON Value s 0 00 9 99 step 0 01 10 0 100 0 step 0 1 IN1 tOFF Value s 0 00 9 99 step 0 01 10 0 100 0 step 0 1 IN1 matching Reset LEDs Set proﬁle Fault trigger Block1 TCS1 TCS2 Trip ProtExt Reset counters Reset CB Monitor 52a 52b Open CB Close CB Remote trip 74VT ext f f Control None Binary input IN2 IN2 Logic Active ON Active OFF IN2 tON Value s 0 00 9 99 step 0 01 10 0 10...

Page 109: ...ulse Latched Minimum pulse width ms 0 500 step 5 K7 Logic De energized Energized Operation MODE No latched Pulse Latched Minimum pulse width ms 0 500 step 5 K8 Logic De energized Energized Operation MODE No latched Pulse Latched Minimum pulse width ms 0 500 step 5 K9 Logic De energized Energized Operation MODE No latched Pulse Latched Minimum pulse width ms 0 500 step 5 K10 Logic De energized Ener...

Page 110: ...p2 Type Unipolar Bipolar Loop 2 Nominal multiplier Loop2 M 0 01 100 00 step 0 01 Loop 2 Terminals polarity Loop2 Polarity Normal Reverse Current loop 3 Loop 3 Measure assigned Loop3 Mis Frequency UL1 UL2 UL3 UL1avg UL2avg UL3avg UL U1 U2 PLC None Loop 3 Output range Loop3 Range 0 5 mA 0 20 mA 4 20 mA Loop 3 Output type Loop3 Type Unipolar Bipolar Loop 3 Nominal multiplier Loop3 M 0 01 100 00 step ...

Page 111: ...T2 Probe ThAL2 Alarm ThAL2 Enable ThAL2 Enable OFF ON 26 PT2 Alarm threshold ThAL2 C 0 200 step 1 ThAL2 Operating time Value s 0 100 step 1 ThAL2 Alarm relays ThAL2 K K1 K2 K3 K4 K5 K6 ThAL2 Alarm LEDs ThAL2 L START TRIP L1 L2 L3 L4 L5 Th 2 Trip Th 2 Enable Th 2 Enable OFF ON 26 PT2 Trip threshold Th 2 C 0 200 step 1 Th 2 Operating time Value s 0 100 step 1 Th 2 Breaker failure Th 2BF OFF ON Th 2 ...

Page 112: ... 4 Trip relays Th 4 K K1 K2 K3 K4 K5 K6 Th 4 Trip LEDs Th 4 L START TRIP L1 L2 L3 L4 L5 PT5 Probe ThAL5 Alarm ThAL5 Enable ThAL5 Enable OFF ON 26 PT5 Alarm threshold ThAL5 C 0 200 step 1 ThAL5 Operating time Value s 0 100 step 1 ThAL5 Alarm relays ThAL5 K K1 K2 K3 K4 K5 K6 ThAL5 Alarm LEDs ThAL5 L START TRIP L1 L2 L3 L4 L5 Th 5 Trip Th 5 Enable Th 5 Enable OFF ON 26 PT5 Trip threshold Th 5 C 0 200...

Page 113: ...ime Value s 0 100 step 1 Th 7 Breaker failure Th 7BF OFF ON Th 7 Trip relays Th 7 K K1 K2 K3 K4 K5 K6 Th 7 Trip LEDs Th 7 L START TRIP L1 L2 L3 L4 L5 PT8 Probe ThAL8 Alarm ThAL8 Enable ThAL8 Enable OFF ON 26 PT8 Alarm threshold ThAL8 C 0 200 step 1 ThAL8 Operating time Value s 0 100 step 1 ThAL8 Alarm relays ThAL8 K K1 K2 K3 K4 K5 K6 ThAL8 Alarm LEDs ThAL8 L START TRIP L1 L2 L3 L4 L5 Th 8 Trip Th ...

Page 114: ...p value Un 0 05 1 10 step 0 01 U inv Operating time tU inv s 0 10 9 99 step 0 01 10 0 100 0 step 0 1 U Element Setpoints U Logical block U BLK1 OFF ON U Breaker failure U BF OFF ON U Disabling by U start U disbyU OFF ON U Start relays U ST K K1 K2 K3 K4 K5 K6 U Trip relays U TR K K1 K2 K3 K4 K5 K6 U Start LEDs U ST L START TRIP L1 L2 L3 L4 L5 U Trip LEDs U TR L START TRIP L1 L2 L3 L4 L5 Deﬁnite ti...

Page 115: ...4 K5 K6 U Start LEDs U ST L START TRIP L1 L2 L3 L4 L5 U Trip LEDs U TR L START TRIP L1 L2 L3 L4 L5 Deﬁnite time 59 First threshold deﬁnite time State OFF ON Pickup value Un 0 50 1 50 step 0 01 U def Operating time Value s 0 03 9 99 step 0 01 10 0 100 0 step 0 1 Inverse time 59 First threshold inverse time State OFF ON Pickup value Un 0 50 1 50 step 0 01 U inv Operating time tU inv s 0 10 9 99 step...

Page 116: ...g First threshold deﬁnite time State OFF ON Pickup value Un 0 50 1 50 step 0 01 Uavg def Delay time Value s 0 1000 step 1 Negative sequence overvoltage 59V2 U2 Element Setpoints U2 Logical block U2 BLK1 OFF ON U2 Breaker failure U2 BF OFF ON U2 Start relays U2 ST K K1 K2 K3 K4 K5 K6 U2 Trip relays U2 TR K K1 K2 K3 K4 K5 K6 U2 Start LEDs U2 ST L START TRIP L1 L2 L3 L4 L5 U2 Trip LEDs U2 TR L START ...

Page 117: ... 0 step 0 1 f Control relays f K K1 K2 K3 K4 K5 K6 f Control LEDs f L START TRIP L1 L2 L3 L4 L5 f Element Setpoints f Logical block f BLK1 OFF ON f Breaker failure f BF OFF ON f Disabling by f start f disbyf OFF ON f Start relays f ST K K1 K2 K3 K4 K5 K6 f Trip relays f TR K K1 K2 K3 K4 K5 K6 f Start LEDs f ST L START TRIP L1 L2 L3 L4 L5 f Trip LEDs f TR L START TRIP L1 L2 L3 L4 L5 Deﬁnite time 81...

Page 118: ... Control LEDs f L START TRIP L1 L2 L3 L4 L5 f Element Setpoints f Logical block f BLK1 OFF ON f Breaker failure f BF OFF ON f Disabling by f start f disbyf OFF ON f Start relays f ST K K1 K2 K3 K4 K5 K6 f Trip relays f TR K K1 K2 K3 K4 K5 K6 f Start LEDs f ST L START TRIP L1 L2 L3 L4 L5 f Trip LEDs f TR L START TRIP L1 L2 L3 L4 L5 Deﬁnite time 81U Second threshold deﬁnite time State OFF ON Pickup ...

Page 119: ... L1 L2 L3 L4 L5 Deﬁnite time 81U Fourth threshold deﬁnite time State OFF ON Pickup value fn 0 800 1 000 step 0 001 f def Operating time Value s 0 05 9 99 step 0 01 10 0 100 0 step 0 1 Frequency rate of change 81R df Element Setpoints df Operating mode Mode df Module Positive Negative df Logical block df BLK1 OFF ON df Breaker failure df BF OFF ON df Start relays df ST K K1 K2 K3 K4 K5 K6 df Trip r...

Page 120: ...df Disabling by df start df disbydf OFF ON df Start relays df ST K K1 K2 K3 K4 K5 K6 df Trip relays df TR K K1 K2 K3 K4 K5 K6 df Start LEDs df ST L START TRIP L1 L2 L3 L4 L5 df Trip LEDs df TR L START TRIP L1 L2 L3 L4 L5 Deﬁnite time 81R Third threshold deﬁnite time State OFF ON Pickup value Hz s 0 1 10 0 step 0 1 df def Operating time Value s 0 00 9 99 step 0 01 10 0 100 0 step 0 1 df Element Set...

Page 121: ... Trip relays BF TR K K1 K2 K3 K4 K5 K6 BF Start LEDs BF ST L START TRIP L1 L2 L3 L4 L5 BF Trip LEDs BF TR L START TRIP L1 L2 L3 L4 L5 Proﬁle B Thermal protection with RTD thermometric probes 26 PT1 Probe ThAL1 Alarm ThAL1 Enable ThAL1 Enable OFF ON 26 PT1 Alarm threshold ThAL1 C 0 200 step 1 ThAL1 Operating time Value s 0 100 step 1 ThAL1 Alarm relays ThAL1 K K1 K2 K3 K4 K5 K6 ThAL1 Alarm LEDs ThA...

Page 122: ...e Th 3 Enable OFF ON 26 PT3 Trip threshold Th 3 C 0 200 step 1 Th 3 Operating time Value s 0 100 step 1 Th 3 Breaker failure Th 3BF OFF ON Th 3 Trip relays Th 3 K K1 K2 K3 K4 K5 K6 Th 3 Trip LEDs Th 3 L START TRIP L1 L2 L3 L4 L5 PT4 Probe ThAL4 Alarm ThAL4 Enable ThAL4 Enable OFF ON 26 PT4 Alarm threshold ThAL4 C 0 200 step 1 ThAL4 Operating time Value s 0 100 step 1 ThAL4 Alarm relays ThAL4 K K1 ...

Page 123: ...3 K4 K5 K6 ThAL6 Alarm LEDs ThAL6 L START TRIP L1 L2 L3 L4 L5 Th 6 Trip Th 6 Enable Th 6 Enable OFF ON 26 PT6 Trip threshold Th 6 C 0 200 step 1 Th 6 Operating time Value s 0 100 step 1 Th 6 Breaker failure Th 6BF OFF ON Th 6 Trip relays Th 6 K K1 K2 K3 K4 K5 K6 Th 6 Trip LEDs Th 6 L START TRIP L1 L2 L3 L4 L5 PT7 Probe ThAL7 Alarm ThAL7 Enable ThAL7 Enable OFF ON 26 PT7 Alarm threshold ThAL7 C 0 2...

Page 124: ...robe diagnostic LEDs PT100Diag L START TRIP L1 L2 L3 L4 L5 Undervoltage 27 Common conﬁguration 27 Operating logic Logic27 OR AND U Element Setpoints U Enable U Enable OFF ON U Curve type U Curve INVERSE DEFINITE U Logical block U BLK1 OFF ON U Breaker failure U BF OFF ON U Start relays U ST K K1 K2 K3 K4 K5 K6 U Trip relays U TR K K1 K2 K3 K4 K5 K6 U Start LEDs U ST L START TRIP L1 L2 L3 L4 L5 U T...

Page 125: ...relays U1 ST K K1 K2 K3 K4 K5 K6 U1 Trip relays U1 TR K K1 K2 K3 K4 K5 K6 U1 Start LEDs U1 ST L START TRIP L1 L2 L3 L4 L5 U1 Trip LEDs U1 TR L START TRIP L1 L2 L3 L4 L5 Deﬁnite time 27V1 First threshold deﬁnite time State OFF ON Pickup value Un 0 05 1 10 step 0 01 U1 def Operating time Value s 0 07 9 99 step 0 01 10 0 100 0 step 0 1 Overvoltage 59 Common conﬁguration 59 Operating logic Logic59 OR ...

Page 126: ...eﬁnite time 59 Second threshold deﬁnite time State OFF ON Pickup value Un 0 50 1 50 step 0 01 U def Operating time Value s 0 03 9 99 step 0 01 10 0 100 0 step 0 1 Average overvoltage 59Uavg Common conﬁguration 59Uavg Operating logic Logic59Uavg OR AND Uavg Element Setpoints Uavg Enable Uavg Enable OFF ON Uavg Logical block Uavg BLK1 OFF ON Uavg Breaker failure Uavg BF OFF ON Uavg Start relays Uavg...

Page 127: ... K3 K4 K5 K6 f Start LEDs f ST L START TRIP L1 L2 L3 L4 L5 f Trip LEDs f TR L START TRIP L1 L2 L3 L4 L5 Deﬁnite time 81O First threshold deﬁnite time State OFF ON Pickup value fn 1 000 1 200 step 0 001 f def Operating time Value s 0 05 9 99 step 0 01 10 0 100 0 step 0 1 Voltage control f Control enable f OFF ON f Controlled by UE f UE OFF ON f Controlled by digital input f DIGIN OFF ON f Controlle...

Page 128: ...TRIP L1 L2 L3 L4 L5 f Trip LEDs f TR L START TRIP L1 L2 L3 L4 L5 Deﬁnite time 81U First threshold deﬁnite time State OFF ON Pickup value fn 0 800 1 000 step 0 001 f def Operating time Value s 0 05 9 99 step 0 01 10 0 100 0 step 0 1 Voltage control f Control enable f OFF ON f Controlled by UE f UE OFF ON f Controlled by digital input f DIGIN OFF ON f Controlled by 27V1 f 27V1 OFF ON f Controlled by...

Page 129: ...rt LEDs f ST L START TRIP L1 L2 L3 L4 L5 f Trip LEDs f TR L START TRIP L1 L2 L3 L4 L5 Deﬁnite time 81U Third threshold deﬁnite time State OFF ON Pickup value fn 0 800 1 000 step 0 001 f def Operating time Value s 0 05 9 99 step 0 01 10 0 100 0 step 0 1 f Element Setpoints f Logical block f BLK1 OFF ON f Breaker failure f BF OFF ON f Disabling by f start f disbyf OFF ON f Disabling by f start f dis...

Page 130: ... Breaker failure df BF OFF ON df Disabling by df start df disbydf OFF ON df Start relays df ST K K1 K2 K3 K4 K5 K6 df Trip relays df TR K K1 K2 K3 K4 K5 K6 df Start LEDs df ST L START TRIP L1 L2 L3 L4 L5 df Trip LEDs df TR L START TRIP L1 L2 L3 L4 L5 Deﬁnite time 81R Second threshold deﬁnite time State OFF ON Pickup value Hz s 0 1 10 0 step 0 1 df def Operating time Value s 0 00 9 99 step 0 01 10 ...

Page 131: ...ourth threshold deﬁnite time State OFF ON Pickup value Hz s 0 1 10 0 step 0 1 df def Operating time Value s 0 00 9 99 step 0 01 10 0 100 0 step 0 1 Trip circuit supervision 74TCS 74TCS Enable 74TCS Enable OFF ON 74TCS Logical block 74TCS BLK1 OFF ON 74TCS Start relays 74TCS ST K K1 K2 K3 K4 K5 K6 74TCS Trip relays 74TCS TR K K1 K2 K3 K4 K5 K6 74TCS Start LEDs 74TCS ST L START TRIP L1 L2 L3 L4 L5 7...

Page 132: ...26 0 1 2 3 4 5 6 7 8 9 Switch 27 0 1 2 3 4 5 6 7 8 9 Switch 28 0 1 2 3 4 5 6 7 8 9 Switch 29 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 Switch 30 0 1 2 3...

Page 133: ... 99 Timers Timer 1 s 0 00 0 99 step 0 01 1 0 60 0 step 0 1 Timer 2 s 0 00 0 99 step 0 01 1 0 60 0 step 0 1 Timer 3 s 0 00 0 99 step 0 01 1 0 60 0 step 0 1 Timer 4 s 0 00 0 99 step 0 01 1 0 60 0 step 0 1 Timer 5 s 0 00 0 99 step 0 01 1 0 60 0 step 0 1 Timer 6 s 0 00 0 99 step 0 01 1 0 60 0 step 0 1 Timer 7 s 0 00 0 99 step 0 01 1 0 60 0 step 0 1 Timer 8 s 0 00 0 99 step 0 01 1 0 60 0 step 0 1 Timer...

Page 134: ... 00 step 0 05 Low frequency limit Hz 40 00 50 00 step 0 05 Up frequency band limit Hz 50 00 60 00 step 0 05 Low frequency band limit Hz 40 00 50 00 step 0 05 Timer s 0 59 step 1 60 1000 step 10 ARF 2 Enable OFF ON Selection Aux1 Aux2 Up frequency limit Hz 50 00 60 00 step 0 05 Low frequency limit Hz 40 00 50 00 step 0 05 Up frequency band limit Hz 50 00 60 00 step 0 05 Low frequency band limit Hz ...

Page 135: ...l UTC 3 Addis Abeba Baghdad Moscow Nairobi S Petersburg UTC 4 Baku Dubai Mauritius Samara Tbilisi UTC 5 Karachi Maldives Tashkent Yekaterinburg UTC 6 Almaty Dhaka Omsk UTC 1 Azores Capo Verde UTC 2 Mid Atlantic UTC 3 Brasilia BuenosAires Georgetown Greenland UTC 4 AtlanticTime LaPaz Manuas Santiago UTC 5 EasternTime US Canada Indiana UTC 6 CentralTime US Canada CentralAmerica Daylight saving time ...

Page 136: ... TR U2 TR f TR f TR f TR f TR f TR f TR df TR df TR df TR df TR VOUT6 Type Start Trip Start 27V1 59V2 U TEST_START Trip U TR U TR U TR U TR Th1 TR Th2 TR Th3 TR Th4 TR Th5 TR Th6 TR Th7 TR Th8 TR 74TCS TR BF TR TEST_TRIP U1 TR Uavg TR U2 TR f TR f TR f TR f TR f TR f TR df TR df TR df TR df TR VOUT7 Type Start Trip Start 27V1 59V2 U TEST_START Trip U TR U TR U TR U TR Th1 TR Th2 TR Th3 TR Th4 TR T...

Page 137: ...e START TRIP L1 L2 L3 L4 L5 VIN7 Type UE 27V1 59V2 U RemoteTrip LEDs None START TRIP L1 L2 L3 L4 L5 VIN8 Type UE 27V1 59V2 U RemoteTrip LEDs None START TRIP L1 L2 L3 L4 L5 VIN9 Type UE 27V1 59V2 U RemoteTrip LEDs None START TRIP L1 L2 L3 L4 L5 VIN10 Type UE 27V1 59V2 U RemoteTrip LEDs None START TRIP L1 L2 L3 L4 L5 Oscillography Readings State Initialization Upload from serial ﬂash Reset Wait Stor...

Page 138: ... df dt T1 T2 T3 T4 T5 T6 T7 T8 Off Analog 6 Frequency UL1 UL2 UL3 U1 U2 df dt T1 T2 T3 T4 T5 T6 T7 T8 Off Analog 7 Frequency UL1 UL2 UL3 U1 U2 df dt T1 T2 T3 T4 T5 T6 T7 T8 Off Analog 8 Frequency UL1 UL2 UL3 U1 U2 df dt T1 T2 T3 T4 T5 T6 T7 T8 Off Analog 9 Frequency UL1 UL2 UL3 U1 U2 df dt T1 T2 T3 T4 T5 T6 T7 T8 Off Analog 10 Frequency UL1 UL2 UL3 U1 U2 df dt T1 T2 T3 T4 T5 T6 T7 T8 Off Analog 11...

Page 139: ...39 IN40 IN41 IN42 Off Binary 7 K1 K2 K3 K4 K5 K6 IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 IN12 IN13 IN14 IN15 IN16 IN17 IN18 IN19 IN20 IN21 IN22 IN23 IN24 IN25 IN26 IN27 IN28 IN29 IN30 IN31 IN32 IN33 IN34 IN35 IN36 IN37 IN38 IN39 IN40 IN41 IN42 Off Binary 8 K1 K2 K3 K4 K5 K6 IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 IN12 IN13 IN14 IN15 IN16 IN17 IN18 IN19 IN20 IN21 IN22 IN23 IN24 IN25 IN2...

Page 140: ...et mask IP gateway Autonegotiation OFF ON Network Services NTP General Enable OFF ON Type Local Network Internet User NTP sychronization LED None START TRIP L1 L2 L3 L4 L5 Internet Type NTP Server Zurich Europe Berlin Europe Italy Europe Fukuoka1 Japan Fukuoka2 Japan Pushchino Russia Lagos Nigeria South Africa User Type NTP Server address Network management Enable OFF ON Type Multicast Broadcast M...

Page 141: ...T TRIP L1 L2 L3 L4 L5 OUT4 Enable OFF ON Address Local Vout VOUT1 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7 VOUT8 Remote Vin VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 VIN7 VIN8 VIN9 VIN10 LEDs None START TRIP L1 L2 L3 L4 L5 OUT5 Enable OFF ON Address Local Vout VOUT1 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7 VOUT8 Remote Vin VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 VIN7 VIN8 VIN9 VIN10 LEDs None START TRIP L1 L2 L3 L4 L5 OUT6 Enabl...

Page 142: ...p 1 Device 7 0 999999 step 1 Device 8 0 999999 step 1 Device 9 0 999999 step 1 Device 10 0 999999 step 1 Device 11 0 999999 step 1 Device 12 0 999999 step 1 Device 13 0 999999 step 1 Device 14 0 999999 step 1 Device 15 0 999999 step 1 Device 16 0 999999 step 1 Device 17 0 999999 step 1 Device 18 0 999999 step 1 Device 19 0 999999 step 1 Device 20 0 999999 step 1 Enable OFF ON Led client s connecte...

Page 143: ...VOUT6 VOUT7 VOUT8 Remote Vin VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 VIN7 VIN8 VIN9 VIN10 LEDs None START TRIP L1 L2 L3 L4 L5 OUT5 Enable OFF ON Address Local Vout VOUT1 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7 VOUT8 Remote Vin VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 VIN7 VIN8 VIN9 VIN10 LEDs None START TRIP L1 L2 L3 L4 L5 OUT6 Enable OFF ON Address Local Vout VOUT1 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7 VOUT8 Remote Vin VIN...

Page 144: ...l 08 2012 APPENDIX DESCRIPTION PARAMETER UNIT SETTING RANGE Local Vout VOUT1 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7 VOUT8 Remote Vin VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 VIN7 VIN8 VIN9 VIN10 LEDs None START TRIP L1 L2 L3 L4 L5 ...

Page 145: ...APPENDIX 145 NV021 Manual 08 2012 8 7 APPENDIX D REVISION HISTORY DSP Firmware release CPU SW release Documentation Setting SW Description 2 01 2 70 NV021 Manuale 08 2012 ThySetter 3 6 6 First edition ...

Page 146: ...eciﬁcations applied for this declaration of conformity or parts thereof harmonized standards nr issue title EN 61010 1 EN 50263 EN 61000 6 4 EN 50081 2 EN 61000 6 2 EN 50082 2 11 2001 08 2000 10 2002 12 2005 Safety requirements for electrical equipment for measurement control and laboratory use Electromagnetic compatibility EMC Product standard for measuring relays and protection equipments Electr...

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