areva relays

Customer SEC -EOA Contract #

Location DAMMAM Project FARAS POWER PLANT Contractor AL TOUKHI EPS Job

# PE0863

EPS Ltd, Riyadh Site test record RELAY TEST Doc. Ref.

Test performed by Test witnessed by Approved by Date of test

s SEC-EOA SEC-EOA Name

Signature

MVAX12- DC SUPERVISION RELAY ...........................................................................................................2 MVAX31- TRIP CIRCUIT SUPERVISION .....................................................................................................3 MVAX11- TRIP RELAY SUPERVISION ........................................................................................................5 MVAW21- INTERPOSING RELAY ................................................................................................................6 MVTP11- CT SUPERVISION RELAY............................................................................................................8 MCAG14- bus differential RELAY................................................................................................................10 P122 – O/C & E/F RELAY ...........................................................................................................................12 LOCKOUT RELAY ......................................................................................................................................16 MVTP 31- CT SUPERVISION RELAY.........................................................................................................17 MFAC34- HIGH IMPEDANCE DIFFERENTIAL RELAY ..............................................................................18 CHECK SYNCHRONISING RELAY- KVAS100...........................................................................................20 P120 – SENSITIVE EARTH FAULT RELAY................................................................................................24 P921 – VOLTAGE PROTECTION RELAY ..................................................................................................26



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MMMVVVAAAXXX111222--- DDDCCC SSSUUUPPPEEERRRVVVIIISSSIIIOOONNN RRREEELLLAAAYYY

1. GENERAL DATA AND INFORMATION: Circuit Ref. Designation Panel No. Serial No. Make Model No. Dwg & Sh No. Aux. Voltage

Flag Type No. of Contacts

2. MECHANICAL CHECKS AND VISUAL INSPECTION:

ITEM DESCRIPTION CHECKED

1 Inspect for any physical damage or defects.

2 Verify connections as per approved drawings.

3 Check that serial no. of relay matching with serial no. of case.

3. ELECTRICAL TESTS: PICKUP / DROP OFF TEST:

Voltage (V) Current (mA) Coil Resistance Pick up Drop off Expected Pick up Drop off Nominal

<75% of Vx – PU 25-40% of Vx - DO

-

Note: Coil Resistance: +/-10% of following values, For 48/54V ---- 2970 Ohms (2 contacts) or 1746 Ohms (4 contacts) For 110/125V ---- 10370 Ohms (2 contacts) or 7470 Ohms (4 contacts)

TIMING TEST:

Terminal No. Contacts No.

Actual Operating Time (ms)

Actual Resetting Time (ms)

Expected Operating / Reset Time (ms)

13 – 14 Operating time <20ms Resetting time >100ms

RELAY BURDEN AT RATED VOLTAGE:

Terminal No. Voltage (V) Current (mA) Limits for Current Burden (W) Burden Limits

13 – 14 23mA for 48/54V

15mA for 110/125V 1.25W for 48/54V 1.9W for 110/125V

4. FUNCTIONAL TEST: Item Description Checked

1 All output contacts resistance measured. 2 Flag operation checked.



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3 Flag operation checked by fuse removal

MMMVVVAAAXXX333111--- TTTRRRIIIPPP CCCIIIRRRCCCUUUIIITTT SSSUUUPPPEEERRRVVVIIISSSIIIOOONNN








3. ELECTRICAL TESTS: MEASURED TRIP SUPPLY VOLTAGE:

Voltage Measurement Measured Resistance Between

14-22 (Ohms)

Expected value (V) Test CB Status Relay

Terminals

Voltage (V) 48/54V relay

110/125V relay

Actual Expected (+/-10%)

13-14 13.6 - 14.2 27.9 – 29.4

21-22 13.6 - 14.2 27.9 – 29.4 1 & 2 Open

27-28 36.5 - 42.7 31.3 – 38.8

13-14 27.1-28.5 55.8 – 58.9

21-22 0 0 3 Close

27-28 36.5 - 37.7 31.3 – 38.8

4 Close 14-22 3100 for 48/54V

7400 for 110/125V



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MVAX31- TRIP CIRCUIT SUPERVISION

TEST 4 : WITH CB CLOSED CONDITION, a) Short Rext2 terminals. Check CB doesn’t trip b) Short the relay terminals 13-14. Check RL1 drops and flag, alarm contacts operate

TEST 5: WITH CB CLOSE CONDITION, Initiate trip relay or short trip contacts. Check CB tripped, and RL1 doesn’t drop TEST 6: SUPERVISION CURRENT MEASUREMENT:

Sl. No.

CB Status Trip Relay Status Supervision Current Thro’ Trip Coil

1 Close Reset

2 Open Reset

3 Open Operate

7. FUNCTIONAL TEST:

Item Description Checked

1 All output contacts resistance measured.

2 Flag operation checked. 3 Flag operation checked by fuse removal



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MMMVVVAAAXXX111111--- TTTRRRIIIPPP RRREEELLLAAAYYY SSSUUUPPPEEERRRVVVIIISSSIIIOOONNN








3. ELECTRICAL TESTS: PICKUP TEST:

Pickup Drop off Relay terminals Voltage Current Voltage Current

Current at Rate voltage

27-28

27-21

Note: typical current at rated voltage, At 48volts 24.1-29.5mA. At 110volts 11-13.4mA. SUPERVISION CURRENT MEASUREMENT:

Sl. No. trip RELAY STATUS mvax11 Relay Status Supervision Current

Thro’ Trip relay

1 Reset

2 Operate

4. FUNCTIONAL TEST:



2 Flag operation checked. 3 Flag operation checked by fuse removal



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MMMVVVAAAWWW222111--- IIINNNTTTEEERRRPPPOOOSSSIIINNNGGG RRREEELLLAAAYYY



R Ext






3. ELECTRICAL TESTS: PICKUP / DROP OFF TEST:

Test without external resistor (if available).

Voltage (V) Current (mA) Coil

Relay Terminal

s Pick up Drop off Operative range Pick up Drop off Nominal

Coil- A 13–14

Coil- B 27-28

37.5-60V with 0 Ohm pilot resist.

>25 – PU >15 - DO

TIMING TEST:

Test with external resistor (if available) and apply rated voltage.

Coil Contacts No. Actual Operating Time (ms)

Actual Resetting Time (ms)

Expected Operating / Reset Time (ms)

Coil - A

Coil- B

P/U-Typ. 50ms for 0 Ohm pilot resist. P/U-Typ. 80ms for 200-Ohm pilot resist. >35 for Reset


Coil Voltage (V) Current (mA) Burden (W) Burden Limits

Coil - A

Coil- B 3.7 W at 54V



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2 Flag operation checked.

3 Final measured loop resistance of pilot connected to relay (max 200 ohms)



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MMMVVVTTTPPP111111--- CCCTTT SSSUUUPPPEEERRRVVVIIISSSIIIOOONNN RRREEELLLAAAYYY

1. GENERAL DATA AND INFORMATION:

Circuit. Model no: Panel No. Aux. supply Make: No of contacts Frequency R phase Sl.no Flag type Y phase Sl.no Setting Range B phase Sl.no



1 Inspect for any physical damage or defects. 2 Verify connections as per approved drawings. 3 Check the tightness of all connections. 4 Check ferrules. 5 Check apparatus lists.


3. ELECTRICAL TESTS: PRELIMINARY TEST:

FUNCTION R Y B

Test Switch Isolation Checked

CT Bus Shorting Contacts Checked

RELAY BURDEN:

Relay DC voltage Relay DC current Burden Condition

R Y B R Y B R Y B

No operation

Operation

Note: For 48/54 V burden operation/no operation = 1.3/4.86W For 110/125V burden operation/ no operation = 3.0 / 4.37W.



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MVTP11- CT SUPERVISION RELAY PICKUP TEST;

R Y B Voltage Setting

(V) Pick up

(V) Drop off

(V) DO/PU Ratio

Pick up (V)

Drop off (V)

DO/PU Ratio

Pick up (V)

Drop off (V)

DO/PU Ratio

2

3

5

9

Note: Pickup voltage +/-5% Vs. Drop off/ Pickup ratio >85% after 3 sec delay. TIMING TEST:

Phase Contacts No. Actual Operating time at 2xVs Expected operating time (s)

R 3 +/-5%

Y 3 +/-5%

B 3 +/-5%

FINAL SETTING:

Relay final current setting: PICKUP TEST:


(v) Pick up

(V) Drop off

(V) DO/PU Ratio

Pick up (V)

Drop off (V)

DO/PU Ratio

Pick up (V)

Drop off (V)

DO/PU Ratio

FUNCTIONAL TEST:


1 All contacts checked.





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MMMCCCAAAGGG111444--- BBBUUUSSS DDDIIIFFFFFFEEERRREEENNNTTTIIIAAALLL RRREEELLLAAAYYY

1. GENERAL DATA AND INFORMATION: Circuit Ref. Designation Panel No. Model No. Make Aux. Voltage Dwg & Sh No. R phase Slno. Flag Type Y phase Slno. No. of Contacts B phase Slno.






4 Relay CT shorting function checked.

5 Test switch checked for correct function.

6 Stabilizing resistors final setting value.

3. ELECTRICAL TESTS: 3.1 PICKUP / DORP OFF TEST:

Actual operating current

Red phase Yellow phase Blue phase Current setting (A) Pickup

(A) Drop out

(A) Pickup

(A) Drop out

(A) Pickup

(A) Drop out

(A)

Limits

Plug removed



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MCAG14- BUS DIFFERENTIAL RELAY 3.2 OPERATING TIME TEST:

Measured operating time in msec Setting current (A)

Injected current (A) Red phase Yellow phase Blue phase

Limits

5 x current setting

<25 – 30 ms

2 x current setting

<30 ms

3.3 RELAY FINAL SETTING TEST:

3.3.1 PICKUP TEST:

Actual operating current

Red phase Yellow phase Blue phase Current setting (A) Pickup

(A) Drop out

(A) Pickup

(A) Drop out

(A) Pickup

(A) Drop out

(A)

Limits

3.3.2 OPERATING TIME TEST:

Measured operating time in msec Setting current (A)

Injected current (A) Red phase Yellow phase Blue phase

Limits

5 x current setting

<25 – 30 ms

4. FUNCTIONAL TESTS:




3 Check metrosil non-linear resistors connection



# PE0863




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PPP111222222 ––– OOO///CCC &&& EEE///FFF RRREEELLLAAAYYY

1. GENERAL DATA AND INFORMATION: Circuit Ref. Designation Panel No. Serial No. Make Model No. Diagram no. Aux. Voltage Frequency Firmware no. Rated voltage Rated current: No of logic Inputs: No of outputs:





3 Check that serial no. of relay matching with serial no. of display.

4 CT shorting function checked.

3. ELECTRICAL TESTS: 3.1. RELAY SETTING:

Final relay setting retrieved through ‘MICOM S1’ software and printout attached. 3.2. RELAY DC BURDEN TEST:

Current (mA) Burden (W) Nominal Burden (W) Terminal Voltage

(V) Quiescent Output Operated Quiescent Output

Operated Quiescent Max

<3W <6W

3.3. OPTO INPUT CHECK:

(Energize only one OPTO INPUT at a time with relay rated OPTO input voltage – CAUTION!! -Check RATED OPTO INPUT VOLTAGE before apply voltage to OPTO Input terminal)

V DC Applied Terminal No. OPTO

Input No. +Ve Terminal No.

-Ve Terminal No.

Status of OPTO INPUT

Function assigned for OPTO INPUT Remarks

OPTO-1 22 24

OPTO-2 26 28

OPTO-3 17 19



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P122 – O/C & E/F RELAY 3.4. OUTPUT RELAY TEST:

Output Relay No.

Output Contact No. Output relay status

Contact Operation

check

Actual Assignment of

Relays Remarks

WD 36-35 (N.C) / 36-37 (N.O)

RL1 2-4 (N.C) / 2-6 (N.O)

RL2 8-10 (N.C) / 8-12 (N.O)

RL3 14 – 16

RL4 18 – 20

RL5 1 – 3

RL6 5 – 7 3.5. CURRENT INPUT TEST:

Phase Injected current (A) Applied CT ratio Displayed current % Error Remarks

A

B

C

N

3.6. OVER CURRENT ELEMENT (50/51):

3.6.1. CURRENT SENSITIVITY TEST:

Pickup current Drop off current Element

Current setting A B C A B C

Accuracy

I> +/- 2%Is for DT 1.1Is+/- 2% for IDMT

I>> +/- 2%Is for DT

I>>> +/- 2%Is for DT



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P122 – O/C & E/F RELAY 3.6.2. OVER CURRENT TIMING TEST:

Actual operating time Expected operating time Element

Curve/ Time

ph 2xIs 5xIs 10xIs 2xIs 5xIs 10xIs

LED indication

A

B I>

C

A - -

B - - I>>

C - -

A - -

B - - I>>>

C - -

Note: Typical accuracy for operating time: DT: +/- 2% or 30…..50ms IDMT: +/- 5% or 30…….50ms 3.7. EARTH FAULT ELEMENT (50N/51N):

3.7.1. CURRENT SENSITIVITY TEST:

Element Current setting Pickup current Drop off current Accuracy

Ie> +/- 2%Ies for DT 1.1Ies+/- 2% for IDMT

Ie>> +/- 2%Ies for DT

Ie>>> +/- 2%Ies for DT



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P122 – O/C & E/F RELAY

3.7.2. TIMING TEST:

Actual Operating time Expected Operating time Element

Curve/ Time 2xIes 5xIes 10xIes 2xIes 5xIes 10xIes

LED Indication

Ie>

Ie>> - - - -

Ie>>> - - - -

Note: Typical accuracy for operating time: DT: +/- 2% or 30…..50ms IDMT: +/- 5% or 30…….50ms 3.8. FUNCTIONAL TEST:


1 Outputs relay & LED operation as per the configuration.



# PE0863




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LLLOOOCCCKKKOOOUUUTTT RRREEELLLAAAYYY

1. GENERAL DATA AND INFORMATION: Circuit Ref. Designation Panel No. Serial No. Make Model No. Dwg & Sh No. Aux. Voltage Flag Type No. of Contacts





3. ELECTRICAL TESTS: PICKUP TEST:

Coil Relay Terminals Pickup Voltage (V) Pick up Current

(mA) Coil resistance

Coil - T G-B

TIMING TEST:

Coil Contacts No. Actual Operating Time (ms) Expected Operating Time (ms)

Coil - T


Coil Voltage (V) Current (mA) Burden (W) Burden Limits

Coil - A




3 Operation at 60% of lower relay nominal rated voltage



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MMMVVVTTTPPP 333111--- CCCTTT SSSUUUPPPEEERRRVVVIIISSSIIIOOONNN RRREEELLLAAAYYY

1. GENERAL DATA AND INFORMATION:

Circuit. Serial no: Panel No. Model no: Make: Aux. supply Frequency No of contacts Flag type Setting Range



1 Inspect for any physical damage or defects. 2 Verify connections as per approved drawings. 3 Check the tightness of all connections. 4 Check ferrules. 5 Check apparatus lists.


3. ELECTRICAL TESTS: RELAY BURDEN:

Condition Relay DC voltage Relay DC current Burden Remarks

No operation

Operation

Note: For 48/54 V burden operation/no operation = 1.3/4.86W For 110/125V burden operation/ no operation = 3.0 / 4.37W. PICKUP TEST;


(V) Pick up

(V) Drop off

(V) DO/PU Ratio

Pick up (V)

Drop off (V)

DO/PU Ratio

Pick up (V)

Drop off (V)

DO/PU Ratio

2

3

5

9

Note: Pickup voltage +/-5% Vs. Drop off/ Pickup ratio >85% after 3 sec delay.



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MMMFFFAAACCC333444--- HHHIIIGGGHHH IIIMMMPPPEEEDDDAAANNNCCCEEE DDDIIIFFFFFFEEERRREEENNNTTTIIIAAALLL RRREEELLLAAAYYY

1. GENERAL DATA AND INFORMATION: Circuit Ref. Designation Panel No. Serial No. Make Model No. Dwg & Sh No. Frequency:


Setting Range:






4 Relay CT shorting function checked.

5 Test switch checked for correct function.

6 Stabilizing resistors final setting value.

3. ELECTRICAL TESTS: PICKUP / DORP OFF TEST:

Injection done including METROSIL resistor.

R Y B Voltage setting

(V) Pickup current (mA)

Pickup voltage

(V)

Dropoff

voltage (V)

Pickup current (mA)

Pickup voltage

(V)

Dropoff

voltage (V)

Pickup current (mA)

Pickup voltage

(V)

Dropoff

voltage (V)

Pickup current

limit (mA)

25 18-20

50 18-20

75 18-23

100 19-28

125 20-39

150 24-60

175 33-95



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Plug remove 33-95

Note: pickup voltage +/- 10% setting ,D/O and P/U ratio >50%.

MFAC34- HIGH IMPEDANCE DIFFERENTIAL RELAY OPERATING TIME TEST:

Measured operating time in msec Setting voltage (V)

Applied voltage 2xsetting (V) R Y B

Limits

Between 15-30 msec (Max. to min. setting

respectively) (Refer graph)

4. FINAL SETTING TESTS: PICKUP / DORP OFF TEST:

R Y B Voltage setting

(V) Pickup current (mA)

Pickup voltage

(V)

Dropoff

voltage (V)

Pickup current (mA)

Pickup voltage

(V)

Dropoff

voltage (V)

Pickup current (mA)

Pickup voltage

(V)

Dropoff

voltage (V)

Opearate current limits (mA)

Note: pickup voltage +/- 10% setting ,D/O and P/U ratio >50%.

OPERATING TIME TEST:

Measured operating time in msec Setting voltage (V) Applied voltage

2xsetting (V) R Y B Remarks

Between 15-30 msec

(Max. to min. setting respectively)

(Refer graph)

5. FUNCTIONAL TESTS:




3 Check metrosil non-linear resistors connection



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CCCHHHEEECCCKKK SSSYYYNNNCCCHHHRRROOONNNIIISSSIIINNNGGG RRREEELLLAAAYYY--- KKKVVVAAASSS111000000

1. GENERAL DATA AND INFORMATION: Circuit Ref. Designation Panel No. Serial No. Make Model No. Dwg & Sh No. Aux. Voltage Rated frequency No. of Contacts






3. ELECTRICAL TESTS: 3.1. MEASUEMENTS CHECK:

Voltage Input Injected Voltage Relay setting VT Ratio

Relay display Voltage Error

Bus voltage

Line voltage

3.2. OPTO INPUT TEST:

DC Applied Terminal No. Opto Input No. +Ve Terminal

No. -Ve Terminal

No.

Opto Input

Results Function assigned for Opto Input

L0 46 52

L1 48 52

L2 50 52

L3 45 55

L4 47 55

L5 49 55

L6 51 55

L7 53 55



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CHECK SYNCHRONISING RELAY- KVAS100 3.3. OUTPUT RELAY TEST:

Output Relay No. Function assigned for output

Output Relay Terminal No.

Output Relay Results by test

mode Remarks

WD

RL-0

RL-1

RL-2

RL-3

RL-4

RL-5

RL-6

RL-7 3.1. RELAY SETTING:

Parameters setting Parameters setting

CSS VT ratio CSS phase angle

CSS slip freq CSS Synch timer

CSS V.B/ L Live CSS V.B/L Dead

CSS Under voltage CSS Diff. voltage



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CHECK SYNCHRONISING RELAY- KVAS100 3.2. TEST/COMMISSIONING:

3.2.1. PHASE ANGLE TESTS:

Inject Bus and line voltage with Equal magnitude/ frequency/ angle. Vary the phase angle of Line or bus voltage and monitor the ‘Check Synch OK’ output.

Positive Angle Negative Angle Phase Element Phase Setting

(Degrees) Pickup (Degrees)

Drop off (Degrees)

Pickup (Degrees)

Drop off (Degrees)

CSS Phase Angle Note: Accuracy---- setting +1ºor -3º 3.2.2. SLIP FREQUENCY TESTS:

Inject Bus and line voltage with Equal magnitude/ frequency/ angle. Vary the frequency of Line or bus voltage and monitor the ‘Check Synch OK’ output.

Fast Slow Slip Element Slip Setting

(Hz) Pickup(Hz) Pickup(Hz)

CSS Slip Frequency 3.2.3 SLIP TIMER TESTS:

- Inject Bus and line voltage with Equal magnitude/ frequency and angle out of synchronism. - Change the angle of Bus voltage same as Line voltage (so that ‘Check Synch OK’ outputs). - Measure the time between angle change and ‘Check Synch OK’ output.

Timer Type Timer Setting (Sec)

Actual Time (Sec)

CSS Slip Timer

3.2.4 VOLTAGE ELEMENT TESTS:

A.UNDER VOLTAGE ELEMENT: Inject Bus and line voltage with Equal magnitude above the U/V setting / frequency/ angle. Decrease the Line or bus voltage until ‘Check Synch OK’ output resets (U/V Pick up) and increase back until ‘Check Synch OK’ output pick up (U/V drop off).

Voltage Element Setting

(V) Pick up

(V) Drop off

(V)

Line Under voltage

Bus Under voltage



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CHECK SYNCHRONISING RELAY- KVAS100 B. DIFFERENTIAL VOLTAGE ELEMENT: Inject Bus and line voltage with Equal magnitude / frequency/ angle. Decrease the Line or bus voltage until ‘Check Synch OK’ output resets (U/V Pick up) and increase back until ‘Check Synch OK’ output pick up (U/V drop off). Diff. Voltage Element setting:

Bus Voltage Line Voltage

High (+∆U) Low-∆U) High (+∆U) Low-∆U) Voltage Element

P/U D/O P/U D/O P/U D/O P/U D/O

Bus

Line

C. DEAD LINE/ LIVE BUS MONITOR:

V line value V bus Value Actual

‘DLLB’ output operation

Expected ‘DLLB’ output

operation CSS V.B/L Dead -2V CSS V.B/L Live+2V Operate

CSS V.B/L Dead+2V CSS V.B/L Live+2V Reset

CSS V.B/L Dead-2V CSS V.B/L Live-2V Reset

D. LIVE LINE/ DEAD BUS MONITOR:


‘LLDB’ output operation

Expected ‘LLDB’ output

operation CSS V.B/L Live+2V CSS V.B/L Dead -2V Operate

CSS V.B/L Live+2V CSS V.B/L Dead+2V Reset

CSS V.B/L Live-2V CSS V.B/L Dead-2V Reset

E. DEAD LINE/ DEAD BUS MONITOR:


‘DLDB’ output operation

Expected ‘DLDB’ output

operation CSS V.B/L Dead -2V CSS V.B/L Dead -2V Operate

CSS V.B/L Dead+2V CSS V.B/L Dead-2V Reset

CSS V.B/L Dead-2V CSS V.B/L Dead+2V Reset



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PPP111222000 ––– SSSEEENNNSSSIIITTTIIIVVVEEE EEEAAARRRTTTHHH FFFAAAUUULLLTTT RRREEELLLAAAYYY







4 CT shorting function checked.

3. ELECTRICAL TESTS: 3.1. RELAY SETTING: Final relay setting retrieved through ‘MICOM S1’ software and printout attached. 3.2. RELAY DC BURDEN TEST:




<3W <6W

3.3. CURRENT INPUT TEST:

Phase Injected current (A) Applied CT ratio Displayed current % Error Remarks

N

3.4. OPTO INPUT CHECK: (Energize only one OPTO INPUT at a time with relay rated OPTO input voltage – CAUTION!! -Check RATED OPTO INPUT VOLTAGE before apply voltage to OPTO Input terminal)



-Ve Terminal No.


Function assigned for OPTO INPUT

Remarks

OPTO-1 22 24

OPTO-2 26 28



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P120 – EARTH FAULT RELAY

3.5. OUTPUT RELAY TEST:

Output Relay No.

Output Contact No. Output

relay status

Contact Operation

check


Relays Remarks

WD 36-35 (N.C) / 36-37 (N.O)

RL1 2-4 (N.C) / 2-6 (N.O)

RL2 8-10 (N.C) / 8-12 (N.O)

RL3 14 – 16

RL4 18 – 20 3.6. EARTH FAULT ELEMENT (50N/51N): 3.6.1. CURRENT SENSITIVITY TEST:

Element Current setting Pickup current Drop off current Accuracy

Ie> +/- 2%Ies for DT 1.1Ies+/- 2% for IDMT

Ie>> +/- 2%Ies for DT

Ie>>> +/- 2%Ies for DT

3.7.2. TIMING TEST:

Actual Operating time Expected Operating time Element Curve/

Time 2xIes 5xIes 10xIes 2xIes 5xIes 10xIes

LED Indication

Ie>

Ie>> - - - -

Ie>>> - - - -

Note: Typical accuracy for operating time: DT: +/- 2% or 30…..50ms IDMT: +/- 5% or 30…….50ms 3.8. FUNCTIONAL TEST:





# PE0863




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PPP999222111 ––– VVVOOOLLLTTTAAAGGGEEE PPPRRROOOTTTEEECCCTTTIIIOOONNN RRREEELLLAAAYYY







3. ELECTRICAL TESTS: 3.1. RELAY SETTING: Final relay setting retrieved through ‘MICOM S1’ software and printout attached. 3.2. RELAY DC BURDEN TEST:




<3W <6W

3.3. VOLTAGE INPUT TEST:

Measured voltage Phase Applied

voltage (V) Applied VT

ratio AN/AB AN/ BC CN/ CA

% Avg. Error Remarks

A,B,C

3.4. OPTO INPUT CHECK: (Energize only one OPTO INPUT at a time with relay rated OPTO input voltage – CAUTION!! -Check RATED OPTO INPUT VOLTAGE before apply voltage to OPTO Input terminal)



-Ve Terminal No.


Function assigned for OPTO INPUT Remarks

OPTO-1 22 24

OPTO-2 26 28



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P921 – VOLTAGE PROTECTION RELAY

3.5. OUTPUT RELAY TEST:

Output Relay No.

Output Contact No. Output

relay status

Contact Operation

check


Relays Remarks

WD 36-35 (N.C) / 36-37 (N.O)

RL1 2-4 (N.C) / 2-6 (N.O)

RL2 8-10 (N.C) / 8-12 (N.O)

RL3 14 – 16

RL4 18 – 20 3.6. UNDER VOLTAGE ELEMENT (27): Protection Mode: P-P/ P-N 3.6.1. VOLTAGE SENSITIVITY TEST:

Pickup Voltage Drop off Voltage Element Voltage

setting AN/AB BN/BC CN/ CA AN/AB BN/BC CN/ CA Accuracy

V< +/- 2%Vs for DT 0.95Vs+/- 2% for IDMT

V<< +/- 2%Vs for DT

V<<< +/- 2%Vs for DT

3.6.2. TIMING TEST:

Element Time setting

Actual Operating time Expected Operating time LED Indication

V<

V<<

V<<<

Note: Typical accuracy for operating time: DT: +/- 2% or 20ms IDMT: +/- 5% or 40ms



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P921 – VOLTAGE PROTECTION RELAY 3.7. OVER VOLTAGE ELEMENT (59): Protection Mode: P-P/ P-N 3.7.1. VOLTAGE SENSITIVITY TEST:

Pickup Voltage Drop off Voltage Element Voltage

setting AN/AB BN/BC CN/ CA AN/AB BN/BC CN/ CA Accuracy

V> +/- 2%Vs for DT 1.1Vs+/- 2% for IDMT

V>> +/- 2%Vs for DT

V>>> +/- 2%Vs for DT

3.6.2. TIMING TEST:

Element Time setting

Actual Operating time Expected Operating time LED Indication

V>

V>>

V>>>

Note: Typical accuracy for operating time: DT: +/- 2% or 20ms IDMT: +/- 5% or 40ms 3.8. FUNCTIONAL TEST:



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