Transformer protection Alstom make micom relay p64x/p63x testing procedure

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Information about Transformer protection Alstom make micom relay p64x/p63x testing procedure

Published on November 7, 2016

Author: davidroy39

Source: slideshare.net

1. TESTING PROCEDURE FOR MICOM P64x/P63x TRANSFORMER PROTECTION This test procedure should be carried out by well trained person. Individual function only is considered for testing purposes and suitable setting can be adopted and tested. It is not necessary to test the relay at all setting and one setting is enough for confirming relay operation. Since Micom 64x, 63x are numerical relays, scheme operation check and load check should be carried out according to the manual. Note: Test results are made according to relay settings provided at site. 1. Differential Protection Testing Procedure: Graph depicting the various curves or slopes of differential characteristics Ø Use Omicron Test kit. Set phase angle of Primary winding to 00 ,-1200 ,1200 Ø Set phase angle of Secondary winding to 1800 , 600 and -600 Ø This is to account 1800 phase shift for adjusting the current flow of secondary into the relay. Keep the Ip a, Ip b settings in Function Parameters – Global – Main – to Standard. Ø Relay to be set as: m1 – 0.3, m2 – 0.7, I diff – 0.3 and IR m2 – 1.5 Ø Testing involves verification of the tripping characteristic, which has three parts (Given above). Ø The first part is the differential pick-up, which is tested as described earlier.

2. First part of the characteristic is verified as follows: Ø Increase the injected currents slowly from zero in Primary terminals keeping constant zero current in secondary. Find pick-up, it will be on 0.105(FLC*0.3) and read the displayed value in the relay. It will read I diff - 0.3 I ref and I rest - 0.15 I ref (Half of the I diff) Second part of the relay curve: Ø Make injected currents in Primary and Secondary FLC Amps respectively. Reduce the secondary injected current slowly. Find pick-up, it will be on 0.43 and read the displayed value in the relay. It will read I diff - 0.48 I ref and I rest - 0.75 I ref (Approx.) Theoretical value of the Idiff is calculated as follows: Formula: I diff = m1 * I rest + m1 (1-0.5*m1) I diff = 0.3*0.75 + 0.3(1-0.5*0.3) = 0.48 - Which verifies the relay displayed value of I diff. Noted model graph on second part curve trip: 0 1 2 3 4 5 0 1 2 3 4 5 Id / Iref IR / IrefTripping Characteristic Measuring System 1 Measuring System 2 Measuring System 3

3. Third part of the relay curve: Ø Make injected currents in Primary and Secondary 2 times that of FLC Amps. Reduce the secondary injected current slowly. Find pick-up, it will be on 1 Amps and read the value displayed in the relay. It will read as, I diff - 0.8 I ref and I rest – 1.6 I ref (Approx.) Theoretical value of the Idiff is calculated as follows: Formula: I diff = m2 * I rest + I diff * (1-0.5*m1) + IR m2 * (m1 – m2) I diff = 0.7 * 1.6 + 0.3 * (1 - 0.5 * 0.3) + 1.5 * (0.3 – 0.7) = 0.8 - Which verifies the relay displayed value of I diff. Noted model graph on second part curve trip: 0 1 2 3 4 5 0 1 2 3 4 5 Id / Iref IR / IrefTripping Characteristic Measuring System 1 Measuring System 2 Measuring System 3

4. SAMPLE TEST REPORT FOR DIFFERENTIAL: CT DETAILS: Winding PHASE NEUTRAL CT RATIO– HV-CT-1 (HV) (Amps) 600/1 --- CT RATIO –LV-CT-2 (LV)(Amps) Not Used -- CT RATIO –LV-CT-3 (LV)(Amps) 10000/5 -- 1. Metering Check: Winding Injected Current (A) @Secondary side value Measured Current (A) in terms of primary value R Y B N R Y B N HV-CT-1 From Measurement-1 1 1 1 - 603 603.9 602 -- LV-CT-2 From Measurement-1 1 1 1 - 603 603.9 602 -- LV-CT-3 From Measurement-1 5 5 5 - 10.06k 10.06k 10.06k -- INJECTED VOLTAGE(Volts) At 50Hz Measured voltage Vx(KV) VOLTAGE(R,Y) 63.5V 110.1V Note - HV-CT-1 to be HV winding input TRAFO DETAILS MVA : 148.0MVA Adopted Voltage : 229.1/11.5 Kv Vector grp : Ynd11 Match Factor, CT1 : 1.609 (HV side) Match Factor, CT2 : 1.609 (LV-1 side) Match Factor, CT3 : 1.346 (LV-2 side)

5. 1 PH & 3 PH PICK UP TEST: Winding Iref(A) 1 PH - Actual pick up (A) 3 PH – Actual pick up(A) R Y B RYB HV SIDE 1 0.187 0.189 0.187 0.129 LV-1 SIDE 5 1.28 1.28 1.28 0.74 LV-2 SIDE 5 1.28 1.28 1.28 0.74 TRIPPING TIME TEST : Winding Iref(A) OPERATING TIME (Sec)At 2*Pick up current R Y B HV SIDE 1 0.028 0.028 0.028 LV-1 SIDE 5 0.032 0.032 0.032 LV-2 SIDE 5 DIFFERENTIAL PROTECTION : SETTINGS Is1 200.0e-3 PU Trans Diff Enabled Set Mode Advance Is2 1.000 PU K1 30.00 % K2 80.00 % tDIFF LS 0 s Is-HS1 8.000 PU HS2 Status Enabled Zero seq filt HV Enabled Is-HS2 32.00 PU Zero seq filt LV Disabled 2nd harm blocked Enabled Ih(2)% > 10.00 % CTSat and NoGap Enabled Cross blocking Disabled 5th harm blocked Enabled Ih(5)% > 35.00 % Circuitry Fail Disabled

6. SLOPE CHARACTERISTICS STABILITY: CHECKING STABLE CONDITION AT FULL LOAD CURRENT: Full Load Current At HV side: 372.9A Primary 0.622A Secondary Full Load Current At LV side: 7229.6 Primary 3.715 A Secondary Full Load Current At LV side: 7229.6 Primary 3.715 A Secondary 1. OUT ZONE FAULT @ 1 TIMES FLC 2 . INZONE FAULT @ 1 TIMES FLC

7. 3. OUT ZONE FAULT @ 2*TIMES FLC 4. INZONE FAULT @ 2*TIMES FLC STABILITY CHECKS: S.NO Injected current ( A ) Expected values Measured Values STATUS Time (Sec)HV SIDE LV SIDE Id.PU IR,PU Id.PU IR,PU 1. 0.622 ∟0° 3.715 ∟210° 0.000 1.00 0.006 1.00 Stable in m1 slope region No -Trip0.622 ∟-120° 3.715 ∟90° 0.000 1.00 0.002 1.00 0.622 ∟+120° 3.715 ∟330° 0.000 1.00 0.005 1.00 2. 0.622 ∟0° 3.715 ∟30° 2.0 1.0 2.007 1.009 Un stable in m1 slope region Trip 0.031 0.622 ∟-120° 3.715 ∟270° 2.0 1.0 2.010 1.010 0.622 ∟+120° 3.715 ∟150° 2.0 1.0 2.007 1.005 3. 1.244 ∟0° 7.43 ∟210° 0.006 2.0 0.019 2.004 Stable in m2 slope region No -Trip1.244 ∟-120° 7.43∟90° 0.006 2.0 0.012 2.001 1.2440 ∟+120° 7.43 ∟330° 0.006 2.0 0.011 2.004 4. 1.244 ∟0° 7.43 ∟30° 4.00 2.0 4.02 2.008 Un stable in m2 slope region Trip 0.029 1.244 ∟-120° 7.43∟270° 4.00 2.0 4.02 2.008 1.2440 ∟+120° 7.43 ∟150° 4.00 2.0 4.02 2.008 1. Relay found stable for through fault at 1* times full load current. 2. Relay found Unstable for inzone fault at 1* times full load current. 3. Relay found stable for through fault at 2* times full load current. 4. Relay found Unstable for inzone fault at 2* times full load current.

8. VERIFYING SLOPE CHARECTERSTICS: SLOPE m1 and m2 VERIFICATION: S.N O SLOPE Injected current ( A ) Expected values Measured Values STATUS Time (Sec) HV SIDE LV SIDE Id.PU IR,PU Id.PU IR,PU 1. m1 0.4591 ∟0° 2.00 ∟210° 0.2 0.638 0.199 0.64 Un stable in m1 slope región- Trip 0.030 0.4591 ∟-120° 2.00 ∟90° 0.2 0.638 0.199 0.64 0.4591 ∟+120° 2.00 ∟330° 0.2 0.638 0.199 0.64 2. m1 0.681 ∟0° 3.0∟210° 0.29 0.95 0.287 0.956 Un stable in m1 slope region Trip 0.032 0.681 ∟-120° 3.0 ∟90° 0.29 0.95 0.287 0.956 0.681 ∟+120° 3.0 ∟330° 0.29 0.95 0.287 0.956 3. m2 2.37 ∟0° 7.43 ∟210° 1.81 2.905 1.825 2.925 Un stable in m2 slope region Trip 0.03 2.37 ∟-120° 7.43 ∟90° 1.81 2.905 1.824 2.921 2.37 ∟+120° 7.43 ∟330° 1.81 2.905 1.823 2.921 4. m2 3.375∟0° 10.0 ∟210° 2.74 4.05 2.755 4.06 Un stable in m2 slope region Trip 0.033 3.375 ∟-120° 10.0 ∟90° 2.74 4.05 2.755 4.07 3.375 ∟+120° 10.0 ∟330° 2.74 4.05 2.755 4.06 Note - Where testing carried out initially to check stability current, after that HV current increase until relay operates with respect to LV side current. HARMONICS BLOCK: STAGE OPERATE VALUE Operated Time(Sec) STATUS 2nd FAULT AT 50 Hz TRIPPED 2nd If I2/I1<0.1 AT 100 Hz TRIPPED 2nd If I2/I1>0.1 AT 100 Hz BLOCKED 5th FAULT AT 50 Hz TRIPPED 5th If I5/I1<0.35 AT 250 Hz TRIPPED 5th If I5/I1>0.35 AT 250 Hz BLOCKED Where 2nd Harmonics frequency (100Hz) & fundamental normal frequency (50Hz-according to standard) are suppressed at HV winding side for testing purpose.

9. V/f Test (99): V/Hz stage V/Hz Status V/Hz Trip Func V/Hz Set (V/Hz) V/Hz Delay (Sec ) Treset (Sec) V/Hz Alarm Enabled DT 2.331 20.00 - V/Hz >1 Enabled DT 2.530 120.00 - V/Hz >2 Enabled DT 2.640 80.00 - V/Hz >3 Enabled DT 2.860 30.00 - V/Hz >4 Enabled DT 3.08 1.00 - Alarm Check Pickup v/f Ratio Alarm set Time Alarm Operating Time(Sec) 2.31 120sec 120.05 TRIPPING TIME TEST Checking LED’s& Output Relays (As per drawing which is assigned in PSL configuration) FUNCTION Expected Relays Actual Operated Relay’s Expected LED’s Operated LED Status Diff A Trip R1,R13,R14,R4 R1,R13,R14,R4 LED1 LED1 Verified Ok Diff B Trip R1,R13,R14,R4 R1,R13,R14,R4 LED-2 LED-2 Verified Ok Diff C Trip R1,R13,R14,R4 R1,R13,R14,R4 LED-3 LED-3 Verified Ok W2 V/HZ- 1,2,3,4 TRIP R1,R13,R14,R5 R1,R13,R14,R5 LED-4 LED-4 Verified Ok WDG TEMP(L1) R1,R13,R14,R6 R1,R13,R14,R6 LED-5 LED-5 Verified Ok PRD TRIP(L2) R1,R13,R14,R9 R1,R13,R14,R9 LED-6 LED-6 Verified Ok Stage Injected v/f Ratio Actual Operating Time(Sec) Remarks Stage-1 2.391 282.48 ok Stage-1 2.411 175.35 ok Stage-2 2.424 55.06 ok Stage-3 2.691 4.045 ok Stage-4 3.31 0.54 ok

10. OTI TRIP(L3) R1,R13,R14,R7 R1,R13,R14,R7 LED-7 LED-7 Verified Ok SPRD TRIP(L4) R1,R13,R14,R8 R1,R13,R14,R8 LED-8 LED-8 Verified Ok BUCH TRIP(L5) R1,R13,R14, R10 R1,R13,R14, R10 Fn Key-1 Fn Key-1 Verified Ok Tranf Fire(L6) R15 R15 Fn Key-2 Fn Key-2 Verified Ok 96AX OPTD --- --- Fn Key-3 Fn Key-3 Verified Ok TB1X OPTD --- --- Fn Key-4 Fn Key-4 Verified Ok 30EX OPTD --- --- Fn Key-5 Fn Key-5 Verified Ok EXC Transf Temp Very High --- --- Fn Key-6 Fn Key-6 Verified Ok Spare --- --- Fn Key-7 Fn Key-7 Verified Ok Spare --- --- Fn Key-8 Fn Key-8 Verified Ok Spare --- --- Fn Key-9 Fn Key-9 Verified Ok Reset Relay/LED --- --- Fn Key-10 Fn Key-10 Verified Ok TEST RESULT: FUNCTION STATUS OF CHECKING RESULT MEASUREMENT CHECKS q Yes q N/A FOUND OK PROTECTION FUNCTION CHECKS q Yes q N/A FOUND OK DC LOGIC q Yes q N/A FOUND OK OUTPUT RELAY CHECKS q Yes q N/A FOUND OK BREAKER TRIPPING CHECKS q Yes q N/A FOUND OK OPTO INPUT CHECKS q Yes q N/A FOUND OK DISTURBANCE RECORDER TRIGGER q Yes q N/A FOUND OK FAULT RECORDER q Yes q N/A FOUND OK EVENT RECORDER q Yes q N/A FOUND OK LED CHECK q Yes q N/A FOUND OK ANNUNCIATION CHECK q Yes q N/A FOUND OK WATCH DOG RELAY CHECK q Yes q N/A FOUND OK COMMUNICATION FRONT q Yes q N/A FOUND OK

11. REF PROTECTION: Procedure: Input energizing quantity (current) is increased slowly until relay contact operates SAMPLE SETTING WITH TEST REPORT: Rated Input current: 1/5 A a- SIDE REF (HV SIDE ) Relay setting /Parameters/Function parameters/Parameter subset 1/REF_1 REF_1 Enable PS1--Yes REF_1 Operating mode PS1--High impedance REF_1 Idiff> PS1--1.00 Iref REF_1 Idiff>>> PS1--Blocked K REF_1 m1 PS1--0.20 REF_1 m2 PS1--1.50 REF_1 IR,m2 PS1--1.00 Iref Sl No Idiff> Setting Measured Operating Value (Amp) Claimed Value (Amp) 0.2 Iref To be calculated 0.19 to 0.21 0.3 Iref To be calculated 0.285 to 0.315 0.5 Iref To be calculated 0.475 to 0.525 0.7 Iref To be calculated 0.665 to 0.735 1.0 Iref To be calculated 0..95 to 1.05 b- SIDE REF (LV SIDE ) Relay Setting /Parameters/Function parameters/Parameter subset 1/REF_2 REF_2 Enable PS1-- Yes REF_2 Operating mode PS1-- High impedance REF_2 Idiff> PS1-- 0.20 Iref REF_2 Idiff>>> PS1-- Blocked REF_2 m1 PS1-- 0.20 REF_2 m2 PS1-- 1.50 REF_2 IR,m2 PS1-- 1.00 Iref Sl No Idiff> Setting Measured Operating Value (Amp) Claimed Value (Amp) 0.2 Iref To be calculated 0.19 to 0.21 0.3 Iref To be calculated 0.285 to 0.315 0.5 Iref To be calculated 0.475 to 0.525 0.7 Iref To be calculated 0.665 to 0.735 1.0 Iref To be calculated 0.95 to 1.05

12. DTOC FUNCTION TEST: Procedure: Input energizing quantity (current) is increased slowly until relay contact operates SAMPLE SETTING WITH TEST REPORT: Rated Input current: 1/5 A Relay setting /Parameters/Function parameters/Parameter subset 1/DTOC1 DTOC1 Enable PS1--Yes DTOC1 Block tim.st. IN PS1--Without DTOC1 Gen.starting modePS1--W/o start. IN/Ineg DTOC1 tGS PS1--0.00 s DTOC1 Rush restr.enabl PS1--No DTOC1 I> PS1--1.00 Inom DTOC1 I>> PS1--30.00 Inom DTOC1 I>>> PS1--30.00 Inom DTOC1 I> dynamic PS1--1.00 Inom DTOC1 I>> dynamic PS1--1.00 Inom DTOC1 I>>> dynamic PS1--1.00 Inom DTOC1 tI> PS1--0.00 s DTOC1 tI>> PS1--0.00 s DTOC1 tI>>> PS1--0.00 s DTOC1 Ineg> PS1--0.25 Inom DTOC1 Ineg>> PS1--8.00 Inom DTOC1 Ineg>>> PS1--8.00 Inom DTOC1 Ineg> dynamic PS1--1.00 Inom DTOC1 Ineg>> dynamic PS1--1.00 Inom DTOC1 Ineg>>> dynamic PS1--1.00 Inom DTOC1 tIneg> PS1--0.00 s DTOC1 tIneg>> PS1--0.00 s DTOC1 tIneg>>> PS1--0.00 s DTOC1 IN> PS1--0.25 Inom DTOC1 IN>> PS1--8.00 Inom DTOC1 IN>>> PS1--8.00 Inom DTOC1 IN> dynamic PS1--1.00 Inom DTOC1 IN>> dynamic PS1--1.00 Inom DTOC1 IN>>> dynamic PS1--1.00 Inom DTOC1 tIN> PS1--0.00 s DTOC1 tIN>> PS1--0.00 s DTOC1 tIN>>> PS1--0.00 s

13. For phase fault (A,B,C) I >; tI> 0 sec I> Setting Value(A AC) I nom Measured operating value Claimed operating value (AAC) A Ph B Ph C Ph 0.5 I nom 0.5 1 0.475 – 0.525 5 I nom 5 1 4.75 – 5.25 20 I nom 20 1 19 – 21 For phase fault (A,B,C) I>>; tI >> 0 sec I>> Setting Value(A AC) I nom Measured operating value Claimed operating value (AAC) A Ph B Ph C Ph 0.5 I nom 0.5 1 0.475 – 0.525 5 I nom 5 1 4.75 – 5.25 20 I nom 20 1 19 – 21 For phase fault (A,B,C) I >>> ; tI>>> 0 sec I>>> Setting Value(A AC) I nom Measured operating value Claimed operating value (AAC) A Ph B Ph C Ph 0.5 I nom 0.5 1 0.475 – 0.525 5 I nom 5 1 4.75 – 5.25 20 I nom 20 1 19 – 21 For earth fault IN> ; tIN> 0 sec IN> Setting Value(A AC) I nom Measured operating value I neutral> Claimed operating value (AAC) 0.2 I nom 0.2 1 0.19 – 0.21 1 I nom 1.0 1 0.95 – 1.05 8.0 I nom 8.0 1 7.60– 8.40 For earth fault IN>> ; tIN>> 0 sec IN>> Setting Value(A AC) I nom Measured operating value I neutral>> Claimed operating value (AAC) 0.2 I nom 0.2 1 0.19 – 0.21 1 I nom 1.0 1 0.95 – 1.05 8.0 I nom 8.0 1 7.60 – 8.40

14. For earth fault IN>>> ; tIN>>> 0 sec IN>>> Setting Value(A AC) I nom Measured operating value I neutral>>> Claimed operating value (AAC) 0.2 I nom 0.2 1 0.19 – 0.21 1 I nom 1.0 1 0.95 – 1.05 8.0 I nom 8 1 7.60– 8.40 For NEGATIVE SEQUENCE Ineg > ; tIneg > 0 sec Procedure: Apply 3 phase Negative sequence current and increase till the function assigned contact closes INEG> Setting Value(A AC) I nom Measured operating value Ineg> Claimed operating value (AAC) 0.5 I nom 0.5 1 0.475 – 0.525 5 I nom 5 1 4.75 – 5.25 8.0 I nom 8.0 1 7.60 – 8.40 For NEGATIVE SEQUEMCE Ineg > >; tIneg >> 0 sec INEG>> Setting Value(A AC) I nom Measured operating value Ineg>> Claimed operating value (AAC) 0.5 A 0.5 1 0.475 – 0.525 5 A 5 1 4.75 – 5.25 8.0 I nom 8.0 1 7.60 – 8.40 For NEGATIVE SEQUEMCE Ineg > >>; tIneg >>> 0 sec INEG>>> Setting Value(A AC) I nom Measured operating value I neg>>> Claimed operating value (AAC) 0.5 I nom 0.5 1 0.475 – 0.525 5 I nom 5 1 4.75 – 5.25 8.0 I nom 8.0 1 7.60 – 8.40

15. IDMT FUNCTION TEST: SAMPLE SETTING WITH TEST REPORT: Rated Input current: 1/5 A Relay setting /Parameters/Function parameters/Parameter subset 1/IDMT1 IDMT1 Enable PS1-- Yes IDMT1 Block tim.st. IN PS1-- Without IDMT1 Gen.starting modePS1-- W/o start. IN/Ineg IDMT1 tGS PS1-- 0.00 s IDMT1 Rush restr.enabl PS1-- No IDMT1 Iref,P PS1-- 1.00 Inom IDMT1 Iref,P dynamic PS1-- 1.00 Inom IDMT1 Characteristic P PS1-- Definite Time IDMT1 Factor kt,P PS1-- 1.00 IDMT1 Min. trip t. P PS1-- 0.00 s IDMT1 Hold time P PS1-- 0.00 s IDMT1 Release P PS1-- Without delay IDMT1 Iref,neg PS1-- 0.80 Inom IDMT1 Iref,neg dynamic PS1-- Blocked IDMT1 Character. neg. PS1-- Definite Time IDMT1 Factor kt,neg PS1-- 1.00 IDMT1 Min. trip t. neg PS1-- 1.00 s IDMT1 Hold time neg PS1-- 0.00 s IDMT1 Release neg PS1-- Without delay IDMT1 Iref,N PS1-- 0.80 Inom IDMT1 Iref,N dynamic PS1-- Blocked IDMT1 Characteristic N PS1-- Definite Time IDMT1 Factor kt,N PS1-- 1.00 IDMT1 Min. trip t. N PS1-- 1.00 s IDMT1 Hold time N PS1-- 0.00 s IDMT1 Release N PS1-- Without delay For phase fault (A,B,C) ; Min. trip t. P= 0 sec Iref,P Setting Value(A AC) I nom Measured operating value Claimed operating value (AAC) A Ph B Ph C Ph 0.2 I nom 0.2 1 0.19 – 2.1 1 I nom 1.0 1 0.95 – 1.05 4 I nom 4.0 1 3.8 – 4.2

16. For NEGATIVE SEQUENCE Iref,neg Min. trip t. neg= 0 sec Procedure: Apply 3 phase Negative sequence current and increase till the function assigned contact closes Iref,neg Setting Value(A AC) I nom Measured operating value Ineg Claimed operating value (AAC) 0.2 I nom 0.2 1 0.19 – 2.1 0.4 I nom 0.4 1 0.38—0.42 0.8 I nom 0.8 1 0.76 – 0.84 For earth fault Iref,N ; Min. trip t. N= 0 sec Iref,N Setting Value(A AC) I nom Measured operating value I neutral Claimed operating value (AAC) 0.2 I nom 0.2 1 0.19 – 2.1 0.4 I nom 0.4 1 0.38—0.42 0.8 I nom 0.8 1 0.76 – 0.84 V < > (UNDER/OVER VOLTAGE) Procedure: Apply 3ph-n voltage (63.5V) and increase one phase voltage for over voltage or decrease one phase voltage for under voltage function till the function assigned contact closes RELAY SETTING /Parameters/Function parameters/Parameter subset 1/V<> V<> Enable PS1-- Yes V<> V> PS1-- 1. Vnom V<> V>> PS1-- 1. Vnom V<> tV> PS1-- 0.00 s V<> tV>> PS1-- 0.00 s V<> V< PS1-- 0.80 Vnom V<> V<< PS1-- 0.80 Vnom V<> Vmin> PS1-- 0.25 Vnom V<> tV< PS1-- Blocked V<> tV<< PS1-- Blocked V<> tTransient PS1-- 1.00 s V<> Hyst. V<> meas. PS1-- 1 %

17. OVER VOLTAGE V> ;tV > 0 sec V> Setting Value(V AC) V nom Measured operating value V> Claimed operating value (V AC)AN BN CN 1.1 V nom 69.859/121 110/Ö3 V 67.763—71.955 1.25 V nom 79.385/137 .5 110/Ö3 V 77.003 --- 81.766 1.5 V nom 95.263/165 110/Ö3 V 92.405—98.121 OVER VOLTAGE V>> ;tV> > 0 sec V> > Setting Value(V AC) V nom Measured operating value V>> Claimed operating value (V AC)AN BN CN 1.1 V nom 69.859 110/Ö3 V 67.763—71.955 1.25 V nom 79.385 110/Ö3 V 77.003 --- 81.766 1.5 V nom 95.263 110/Ö3 V 92.405—98.121 UNDER VOLTAGE V< ;tV< 0 sec V< Setting Value(V AC) V nom Measured operating value V< Claimed operating value (V AC)AN BN CN 0.3 V nom 19.05 110/Ö3 V 18.478—19.622 0.6 V nom 38.10 110/Ö3 V 36.957---39.243 0.9 V nom 57.15 110/Ö3 V 55.435—58.865 UNDER VOLTAGE V<< ;tV<< 0 sec V<< Setting Value(V AC) V nom V<< Optd Claimed operating value AACAN BN CN 0.3 V nom 19.05 110/Ö3 V 18.478—19.622 0.6 V nom 38.10 110/Ö3 V 36.957---39.243 0.9 V nom 57.15 110/Ö3 V 55.435—58.865

18. f < > (UNDER/OVER FREQUENCY) Procedure: Apply3 phase voltage (63.5V) with rated frequency and increase or decrease the frequency till the function assigned contact closes RELAY SETTING /Parameters/Function parameters/General functions/f<> General enable USER -- Yes Selection meas. volt -- Voltage A-G Evaluation time -- 4 Periods Undervolt. block. V< -- 0.65 Vnom(/Ö3) Other functions in General functions -- General enable USER -- No /Parameters/Config. parameters/OUTP Fct. assignm. K 7 --- f<> Trip signal f1 /Parameters/Function parameters/Parameter subset 1/f<> Enable PS1 --- Yes Oper. mode f1 PS1 --- f f1 PS1 --- 49.80 Hz tf1 PS1 --- 0.00 s df1/dt PS1 --- 2.0 Hz/s Delta f1 PS1 --- 0.30 Hz Delta t1 PS1 --- 0.30 s Oper. mode f2 PS1 --- f f2 PS1 --- 69.80 Hz tf2 PS1 --- 0.00 s df2/dt PS1 --- 2.0 Hz/s Delta f2 PS1 --- 0.30 Hz Delta t2 PS1 --- 0.30 s Oper. mode f3 PS1 --- f f3 PS1 --- 69.80 Hz tf3 PS1 --- 0.00 s df3/dt PS1 --- 2.0 Hz/s Delta f3 PS1 --- 0.30 Hz Delta t3 PS1 --- 0.30 s Oper. mode f4 PS1 --- f f4 PS1 --- 69.80 Hz tf4 PS1 --- 0.00 s df4/dt PS1 --- 2.0 Hz/s Delta f4 PS1 --- 0.30 Hz Delta t4 PS1 --- 0.30 s

19. Frequency setting f<> Function f1 Setting Measured operating value ( Hz ) Claimed operating value Hz 45 Hz 43.65—46.35 48 Hz 46.56 --- 49.44 52 Hz 50.44 --- 53.56 V/f FUNCTION-ALARM Relay Setting /Parameters/Function parameters/Parameter subset 1/V/f V/f Enable PS1-- Yes V/f V/f> (alarm) PS1-- 1.05 Vnom/fnom V/f V/f(t)> PS1-- Blocked V/f V/f>> PS1-- Blocked V/f tV/f> PS1-- 0 s V/f t at V/f=1.05 PS1-- 72.8 s V/f t at V/f=1.10 PS1-- 18.8 s V/f t at V/f=1.15 PS1-- 8.8 s V/f t at V/f=1.20 PS1-- 5.3 s V/f t at V/f=1.25 PS1-- 3.7 s V/f t at V/f=1.30 PS1-- 2.8 s V/f t at V/f=1.35 PS1-- 2.3 s V/f t at V/f=1.40 PS1-- 1.9 s V/f t at V/f=1.45 PS1-- 1.7 s V/f t at V/f=1.50 PS1-- 1.5 s V/f t at V/f=1.55 PS1-- 1.4 s V/f t at V/f=1.60 PS1-- 1.3 s V/f Reset time PS1-- 0 s V/f tV/f>> PS1-- 0 s Procedure: Apply AC voltage (50Hz) less than setting and increase the voltage with time delay of 200mSec till it operates. Record the value (Operating value = setting X supply frequency ) Sl No V/f> (alarm) Setting (Vnom/fnom) Value(V AC) Measured Operating Value (Volt) Claimed Value (Volt) 1.00 110.0 106.70 to 113.30 1.10 121.0 117.37 to 124.63 1.19 130.9 126.973 to 134.83

20. Operating time test LOW SET OPERATING TIME: Relay Setting SETTINGS(1) S1 Id> 200.0e-3PU Procedure: Apply 1ph current with 5 times setting value & measure operating time HV SIDE1 Sl No Measured Operating Time Claimed Operating Time A-PHASE B-PHASE C-PHASE 30 to 40 m Sec HIGH SET OPERATING TIME: Relay Setting SETTINGS(1) S1 Id>> 5 PU Procedure: Apply 1ph current with 5 times setting value & measure operating time LV SIDE1 Sl No Measured Operating Time Claimed Operating Time A-PHASE B-PHASE C-PHASE 10 to 20 m Sec REF OPERATING TIME: Relay Setting SETTINGS(1) S1 Io> HV 100.0e-3PU S1 Io> LV1 100.0e-3PU S1 Io> LV2 100.0e-3PU Procedure: Apply 1ph current with 5 times setting value & measure operating time .. Sl No Measured Operating Time Claimed Operating Time HV LV1 LV2 20 to 40 m Sec OVERFLUX OPERATING TIME(TRIP); Relay Setting SETTINGS(1) S1 V/f(Trip)Char DT S1 V/f (Trip) 2.20- Procedure: Apply voltage 121VAC (110% OF SETTING) ,50Hz and measure operating time Sl No tV/f (Trip) setting Measured Operating Time (Sec) Claimed Operating Time (Sec) 2 S 1.90 to 2.1S 20 S 19.0 to 21.0S 50 S 47.5 to 52.5

21. Relay Setting SETTINGS(1) S1 V/f(Trip) I DMT S1 V/f (Trip) 2.20- S1 TMS 1 Procedure: Apply voltage 121VAC (110% OF SETTING) ,50Hz and measure operating time Sl No Applied Voltage Measured Operating Time (Sec) Claimed Operating Time (Sec) 121V 16.92 to 20.68 132V 4.770 to 5.83 143V 2.520 to 3.08 OVERFLUX OPERATING TIME(ALARM): Relay Setting SETTINGS(1) S1 V/f(Trip)Char DT S1 V/f (ALARM) 2.20- Procedure: Apply voltage 121VAC (110% OF SETTING) ,50Hz and measure operating time Sl No tV/f (ALARM) setting Measured Operating Time (Sec) Claimed Operating Time (Sec) 2 S 1.90 to 2.1S 20 S 19.0 to 21.0S 50 S 47.5 to 52.5

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