TEST CERTIFICATE OF IDMT CURRENT RELAY

Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 06.01.2023

Plant 33 kV HT PANEL ROOM / VFD ROOM Tested by SRK
Location P – 1, INCOMER – 1, 33 kV HT PANEL

1.0 Name Plate details of Relay :

Make Type Model No. Serial No. Rated In (A) Aux. Supply
80 – 250 V DC /
SIEMENS 7SR12 05 – 2GA12 – 1CA0 / DD GF1502500391 1
115 V AC

2.0 Service Settings :

Sr. No. Description Service setting
Over current pick up (51 – 1) 1.0 X In
Characteristics IEC NI
TMS 1.0
Over current pick up (51 – 2) 1.0 X In
Characteristics IEC NI
TMS 1.0
2.1
Over current pick up (51 – 3) 1.0 X In
Characteristics IEC NI
TMS 1.0
Over current pick up (51 – 4) 1.0 X In
Characteristics IEC NI
TMS 1.0
Over current pick up (50 – 1) 1.5 X In
Delay time (Td) 0.0 s
Over current pick up (50 – 2) 1.5 X In
Delay time (Td) 0.0 s
2.2
Over current pick up (50 – 3) 1.5 X In
Delay time (Td) 0.0 s
Over current pick up (50 – 4) 1.5 X In
Delay time (Td) 0.0 s
2.3 Earth fault pick up (51G – 1) 0.2 X In
Characteristics IEC NI
TMS 1.0
Earth fault pick up (51G – 2) 0.2 X In
Characteristics IEC NI
TMS 1.0
Earth fault pick up (51G – 3) 0.2 X In
Characteristics IEC NI
TMS 1.0
Earth fault pick up (51G – 4) 0.2 X In
 Characteristics IEC NI
TMS 1.0
Earth fault pick up (50G – 1) 0.20 X In
Delay time (Td) 0.0 s
Earth fault pick up (50G – 2) 0.20 X In
Delay time (Td) 0.0 s
2.4
Earth fault pick up (50G – 3) 0.20 X In
Delay time (Td) 0.0 s
Earth fault pick up (50G – 4) 0.20 X In
Delay time (Td) 0.0 s
Over Voltage pickup (27/59 – 1) Enable
Set voltage 71.5 V
Time delay 0.10 s
2.5
Over Voltage pickup (27/59 – 2) Enable
Set voltage 74.0 V
Time delay 0.10 s
Under Voltage pickup (27/59 – 3) Enable
Set voltage 50.0 V
Time delay 0.10 s
2.6
Under Voltage pickup (27/59 – 4) Enable
Set voltage 50.0 V
Time delay 0.10 s

3.0 Secondary Injection Test :

3.1 Measurement Checks :
Current Measurement
Phase Current Injected from kit (A) Current Measured from Relay (A)
R 1.0 199
Y 1.0 200
B 1.0 200
N 1.0 200
3.2 Phase Overcurrent Protection :
3.2.1 Phase Overcurrent unit checks (51 – 1) :
Set Current Injected Characteristic = IEC NI, TMS = 1.0 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 2.0 10.07 10.07 OK
1.0
5 5.0 4.281 4.297 OK

3.2.2 Phase Overcurrent unit checks (51 – 2) :

Set Current Injected Characteristic = IEC NI, TMS = 1.0 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 2.0 10.04 10.05 OK
1.0
5 5.0 4.282 4.300 OK

3.2.3 Phase Overcurrent unit checks (51 – 3) :

Set Current Injected Characteristic = IEC NI, TMS = 1.0 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 2.0 10.06 10.10 OK
1.0
5 5.0 4.281 4.291 OK

3.2.4 Phase Overcurrent unit checks (51 – 4) :

Set Current Injected Characteristic = IEC NI, TMS = 1.0 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 2.0 10.05 10.06 OK
1.0
5 5.0 4.280 4.294 OK

3.3 Phase Overcurrent unit checks :

3.3.1 Phase Overcurrent unit checks (50 – 1) :
Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
1.5 1.501 0.0 0.067 OK

3.3.2 Phase Overcurrent unit checks (50 – 2) :

Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
1.5 1.501 0.0 0.094 OK

3.3.3 Phase Overcurrent unit checks (50 – 3) :

Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
1.5 1.501 0.0 0.076 OK

3.3.4 Phase Overcurrent unit checks (50 – 3) :

Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
1.5 1.501 0.0 0.033 OK
3.4 Measured Earth Fault Protection :
3.4.1 Measured Earth Fault unit checks (51G – 1) :
Set Current Injected Characteristic = IEC NI, TMS =1.0 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 0.40 10.04 10.12 OK
0.20
5 1.00 4.280 4.300 OK

3.4.2 Measured Earth Fault unit checks (51G – 2) :

Set Current Injected Characteristic = IEC NI, TMS =1.0 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 0.40 10.05 10.13 OK
0.20
5 1.00 4.281 4.322 OK

3.4.3 Measured Earth Fault unit checks (51G – 3) :

Set Current Injected Characteristic = IEC NI, TMS =1.0 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 0.40 10.02 10.10 OK
0.20
5 1.00 4.279 4.294 OK

3.4.4 Measured Earth Fault unit checks (51G – 4) :

Set Current Injected Characteristic = IEC NI, TMS =1.0 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 0.40 10.03 10.15 OK
0.20
5 1.00 4.301 4.313 OK

3.5 Measured Earth Fault unit checks :

3.5.1 Measured Earth Fault unit checks (50G – 1) :
Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
0.20 0.20 0.0 0.077 OK

3.5.2 Measured Earth Fault unit checks (50G – 2) :

Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
0.20 0.20 0.0 0.087 OK

3.5.3 Measured Earth Fault unit checks (50G – 3) :

Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
0.20 0.20 0.0 0.059 OK

3.5.4 Measured Earth Fault unit checks (50G – 4) :

Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
0.20 0.20 0.0 0.069 OK
3.6 Over Voltage Protection :
3.6.1 Over Voltage Protection unit checks (27 / 59 – 1) :
Operating
Set Current (V) Injected Current (V) Set Time (s) Operating Time (s)
Indication
71.50 71.53 0.10 0.109 OK

3.6.2 Over Voltage Protection unit checks (27 / 59 – 2) :

Operating
Set Current (V) Injected Current (V) Set Time (s) Operating Time (s)
Indication
74.0 74.03 0.10 0.110 OK

3.6.3 Under Voltage Protection unit checks (27 / 59 – 3) :

Operating
Set Current (V) Injected Current (V) Set Time (s) Operating Time (s)
Indication
50.0 49.89 0.10 0.106 OK

3.6.4 Under Voltage Protection unit checks (27 / 59 – 4) :

Operating
Set Current (V) Injected Current (V) Set Time (s) Operating Time (s)
Indication
50.0 49.97 0.10 0.104 OK

4.0 General check – up :

Sr. No. Description Remarks
4.1 Cleaning of relay OK
4.2 Inspection for physical damage OK
4.3 Wiring check after test OK
4.4 Service settings restored OK
4.5 Current measurement checks OK
4.6 LED Indication & key operation checks OK
4.7 Assigned binary input & output operation check OK
4.8 Abnormality, if any NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF AUXILIARY RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 06.01.2023
Plant 33 kV HT PANEL ROOM / VFD ROOM Tested by SRK
Location P – 1, INCOMER – 1, 33 kV HT PANEL

1.0 Name plate details of relay :

Make Type Model No. Serial No. Aux. supply
ALSTOM VAJH 13 YF0751BBA 33197912 / 02 / 15 110 – 125 V DC

2.0 Coil resistance test :

Coil Designation Coil Resistance, kΩ
A 0.079

3.0 Coil pick – up and drop – off test :

Coil Designation Pick – up Volts Drop – off Volts
A 36 HAND RESET

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Wiring check of relay OK
4.3 Cleaning and pressure of relay contacts OK
4.4 Flag operation and resetting of flags with cover OK
4.5 Abnormality, if any NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF IDMT CURRENT RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 06.01.2023
Plant 33 kV HT PANEL ROOM / VFD ROOM Tested by SRK
Location P – 3, TRANSFORMER FEEDER FOR TR – 09, 33 kV HT PANEL

1.0 Name Plate details of Relay :

Make Type Model No. Serial No. Rated In (A) Aux. Supply
SIEMENS 7SR10 03 – 1GA20 – 1CA0 / CC GF1503507053 1 80 – 250 V DC

2.0 Service Settings :

Sr. No. Description Service setting
Over current pick up (50 – 1) 5.0 X In
Delay time (Td) 0.0 s
2.1
Over current pick up (50 – 2) 5.0 X In
Delay time (Td) 0.0 s
Earth fault pick up (51N – 1) 0.2 X In
2.2 Characteristics IEC NI
TMS 0.50
Earth fault pick up (50N – 1), 0.25 X In
2.3
Delay time (Td) 0.0 s
Sensitive Earth fault pick up (51G – 1) 0.2 X In
2.4 Characteristics IEC NI
TMS 0.50
Sensitive Earth fault pick up (50G – 1) 0.30 X In
2.5
Delay time (Td) 0.0 s

3.0 Secondary Injection Test :

3.1 Measurement Checks :
Current Measurement
Phase Current Injected from kit (A) Current Measured from Relay (A)
R 1.0 100
Y 1.0 100
B 1.0 100
N 1.0 100
3.2 Phase Overcurrent Protection :
3.2.1 Phase Overcurrent unit checks (51 – 1) :
Set Current Injected Characteristic = IEC NI, TMS = 0.50 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 1.10 5.014 5.022 OK
0.55
5 2.75 2.140 2.124 OK

3.2.2 Phase Overcurrent unit checks (51 – 2) :

Set Current Injected Characteristic = IEC NI, TMS = 0.50 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 1.20 5.014 5.022 OK
0.60
5 3.00 2.140 2.134 OK

3.3 Phase Overcurrent unit checks :

3.3.1 Phase Overcurrent unit checks (50 – 1) :
Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
5.0 5.02 0.0 0.038 OK

3.3.2 Phase Overcurrent unit checks (50 – 2) :

Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
5.0 5.02 0.0 0.037 OK

3.4 Derived Earth Fault Protection :

3.4.1 Derived Earth Fault unit checks (51N – 1) :
Set Current Injected Characteristic = IEC NI, TMS = 0.50 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 0.40 5.014 5.052 OK
0.20
5 1.00 2.140 2.123 OK

3.5.1 Derived Earth Fault unit checks (50N – 1) :

Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
0.25 0.26 0.0 0.047 OK

3.4.2 Sensitive Earth Fault unit checks (51G – 1) :

Set Current Injected Characteristic = IEC NI, TMS = 0.50 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 0.40 5.014 5.045 OK
0.20
5 1.00 2.140 2.182 OK
3.4.3 Sensitive Earth Fault unit checks (50G – 2) :
Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
0.30 0.31 0.0 0.045 OK

4.0 General check – up :

Sr. No. Description Remarks
4.1 Cleaning of relay OK
4.2 Inspection for physical damage OK
4.3 Wiring check after test OK
4.4 Service settings restored OK
4.5 Current measurement checks OK
4.6 LED Indication & key operation checks OK
4.7 Assigned binary input & output operation check OK
4.8 Abnormality, if any NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF AUXILIARY RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 33 kV HT PANEL ROOM / VFD ROOM Tested by NKN
Location P – 3, TRANSFORMER FEEDER FOR TR – 09, 33 kV HT PANEL

1.0 Name plate details of relay :

Sr. No. Make Type Model No. Serial No. Aux. supply
1.1 ALSTOM VAJH 13 YF0751BBA 33197918/02/15 110 – 125 VDC
1.2 ALSTOM VAA 33 ZG8338BCH 33090041/10/14 110 – 125 VDC
1.3 ALSTOM VAA 33 ZG8338BCH 33172535/01/15 110 – 125 VDC
1.4 ALSTOM VAA 33 ZG8338BCH 33172541/01/15 110 – 125 VDC

2.0 Coil resistance test :

Sr. No. Coil Designation Coil Resistance, kΩ
2.1 A 0.089
2.2 A/B/C 5.75 / 5.93 / 5.76
2.3 A/B/C 5.75 / 5.73 / 5.80
2.4 A/B/C 5.91 / 5.85 / 5.89

3.0 Coil pick – up and drop – off test :

Sr. No. Coil Designation Pick – up Volts Drop – off Volts
3.1 A 37 HAND RESET
3.2 A/B/C 71 / 73 / 72 HAND RESET
3.3 A/B/C 71 / 72 / 70 HAND RESET
3.4 A/B/C 72 / 74 / 70 HAND RESET

4.0 General check – up :

Sr. No. Description 1.1 1.2 1.3 1.4
4.1 Inspection for physical damage OK OK OK OK
4.2 Wiring check of relay OK OK OK OK
4.3 Cleaning and pressure of relay contacts OK OK OK OK
4.4 Flag operation and resetting of flags with cover OK OK OK OK
4.5 Abnormality, if any NONE NONE NONE NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF IDMT CURRENT RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 33 kV HT PANEL ROOM / VFD ROOM Tested by NKN
Location P – 4, TRANSFORMER FEEDER FOR TR – 10, 33 kV HT PANEL

1.0 Name Plate details of Relay :

Make Type Model No. Serial No. Rated In (A) Aux. Supply
SIEMENS 7SR10 03 – 1GA20 – 1CA0 / CC GF1503507054 1 80 – 250 V DC

2.0 Service Settings :

Sr. No. Description Service setting
Over current pick up (51 – 1) 0.55 X In
Characteristics IEC NI
TMS 0.50
2.1
Over current pick up (51 – 2) 0.60 X In
Characteristics IEC NI
TMS 0.50
Over current pick up (50 – 1) 5.0 X In
Delay time (Td) 0.0 s
2.2
Over current pick up (50 – 2) 5.0 X In
Delay time (Td) 0.0 s
Earth fault pick up (51N – 1) 0.2 X In
2.3 Characteristics IEC NI
TMS 0.50
Earth fault pick up (50N – 1), 0.25 X In
2.4
Delay time (Td) 0.0 s
Sensitive Earth fault pick up (51G – 1) 0.2 X In
2.5 Characteristics IEC NI
TMS 0.50
Sensitive Earth fault pick up (50G – 1) 0.30 X In
2.6
Delay time (Td) 0.0 s

3.0 Secondary Injection Test :

3.1 Measurement Checks :
Current Measurement
Phase Current Injected from kit (A) Current Measured from Relay (A)
R 1.0 100
Y 1.0 100
B 1.0 100
N 1.0 100
3.2 Phase Overcurrent Protection :
3.2.1 Phase Overcurrent unit checks (51 – 1) :
Set Current Injected Characteristic = IEC NI, TMS = 0.50 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 1.10 5.014 5.028 OK
0.55
5 2.75 2.140 2.150 OK

3.2.2 Phase Overcurrent unit checks (51 – 2) :

Set Current Injected Characteristic = IEC NI, TMS = 0.50 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 1.20 5.014 5.020 OK
0.60
5 3.00 2.140 2.145 OK

3.3 Phase Overcurrent unit checks :

3.3.1 Phase Overcurrent unit checks (50 – 1) :
Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
5.0 5.02 0.0 0.048 OK

3.3.2 Phase Overcurrent unit checks (50 – 2) :

Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
5.0 5.02 0.0 0.045 OK

3.4 Derived Earth Fault Protection :

3.4.1 Derived Earth Fault unit checks (51N – 1) :
Set Current Injected Characteristic = IEC NI, TMS = 0.50 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 0.40 5.014 5.045 OK
0.20
5 1.00 2.140 2.189 OK

3.5.1 Derived Earth Fault unit checks (50N – 1) :

Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
0.25 0.26 0.0 0.040 OK

3.4.2 Sensitive Earth Fault unit checks (51G – 1) :

Set Current Injected Characteristic = IEC NI, TMS = 0.50 Operating
PSM
(A) Current (A) Calculated Time (s) Operating Time (s) Indication
2 0.40 5.014 5.033 OK
0.20
5 1.00 2.140 2.182 OK
3.4.3 Sensitive Earth Fault unit checks (50G – 2) :
Operating
Set Current (A) Injected Current (A) Set Time (s) Operating Time (s)
Indication
0.30 0.31 0.0 0.035 OK

4.0 General check – up :

Sr. No. Description Remarks
4.1 Cleaning of relay OK
4.2 Inspection for physical damage OK
4.3 Wiring check after test OK
4.4 Service settings restored OK
4.5 Current measurement checks OK
4.6 LED Indication & key operation checks OK
4.7 Assigned binary input & output operation check OK
4.8 Abnormality, if any NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF AUXILIARY RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 33 kV HT PANEL ROOM / VFD ROOM Tested by NKN
Location P – 4, TRANSFORMER FEEDER FOR TR – 10, 33 kV HT PANEL

1.0 Name plate details of relay :

Sr. No. Make Type Model No. Serial No. Aux. supply
1.1 ALSTOM VAJH 13 YF0751BBA 33197914/02/15 110 – 125 VDC
1.2 ALSTOM VAA 33 ZG8338BCH 33172545/01/15 110 – 125 VDC
1.3 ALSTOM VAA 33 ZG8338BCH 33172534/01/15 110 – 125 VDC
1.4 ALSTOM VAA 33 ZG8338BCH 33172543/01/15 110 – 125 VDC

2.0 Coil resistance test :

Sr. No. Coil Designation Coil Resistance, kΩ
2.1 A 0.080
2.2 A/B/C 5.65 / 5.54 / 5.69
2.3 A/B/C 5.64 / 5.64 / 5.72
2.4 A/B/C 5.67 / 5.71 / 5.70

3.0 Coil pick – up and drop – off test :

Sr. No. Coil Designation Pick – up Volts Drop – off Volts
3.1 A 38 HAND RESET
3.2 A/B/C 71 / 74 / 73 HAND RESET
3.3 A/B/C 73 / 74 / 73 HAND RESET
3.4 A/B/C 71 / 72 / 74 HAND RESET

4.0 General check – up :

Sr. No. Description 1.1 1.2 1.3 1.4
4.1 Inspection for physical damage OK OK OK OK
4.2 Wiring check of relay OK OK OK OK
4.3 Cleaning and pressure of relay contacts OK OK OK OK
4.4 Flag operation and resetting of flags with cover OK OK OK OK
4.5 Abnormality, if any NONE NONE NONE NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF IDMT CURRENT RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 06.01.2023
Plant 33 kV HT PANEL ROOM / VFD ROOM Tested by SRK
Location P – 12, TRANSFORMER FEEDER FOR TR – 11, 33 kV HT PANEL

1.0 Name Plate details of relay :

Phase Make Type Model No. Serial No. Aux. supply
R AREVA CDAG 51 EG102ZRCH 1308 9366 0605 001 –
E/F AREVA CDAG 51 EG102ZRCH 1308 9366 0605 001 –
B AREVA CDAG 51 EG102ZRCH 1308 9366 0605 001 –

1.1 Service settings :

Range of relay Service setting
Phase INST IDMT INST IDMT
A A TMS A A TMS
R 12.5 – 100 2.5 – 10 0–1 15 6.25 0.4
E/F 0.5 – 2 – – 0.5 – –
B 12.5 – 100 2.5 – 10 0–1 15 6.25 0.4

2.0 Secondary Injection test :

2.1 Pick – up test :
Phase R E/F B Phase R E/F B
PS 6.25 – 6.25 Starting current, A 6.43 – 6.45
TMS 0.30 – 0.30 Closing current, A 7.89 – 7.90
Continuity of all taps & plug bridge shorting contacts OK OK OK

2.2 Time current characteristics test :

PS Operating time, Sec
R &B PSM TMS = 1.0 SS & TMS = 0.4
A R B R B
2 10.07 10.03 4.015 4.025
6.25
5 4.311 4.329 1.717 1.711

2.3 Instantaneous Pickup Test :

Current setting, A Pick–up current, A Operation Indicator
R E/F B R E/F B R E/F B
15 0.5 15 15.10 0.510 15.10 OK OK OK
3.0 General check – up :
Sr. No. Description Remarks
3.1 Inspection for physical damage OK
3.2 Wiring check OK
3.3 Cleaning and pressure of relay contacts OK
3.4 Service settings restored OK
3.5 Flag operation and resetting of flags with cover OK
3.6 CT shorting contacts in relay case OK
3.7 Abnormality, if any NONE

4.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF IDMT CURRENT RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 06.01.2023
Plant 33 kV HT PANEL ROOM / VFD ROOM Tested by SRK
Location P – 12, TRANSFORMER FEEDER FOR TR – 11, 33 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Aux. supply
ALSTOM CDG 11 AF005SACH 1308 7427 0551 004 –

2.0 Service settings :

Range of relay Service setting
Current TMS Current TMS
0.2 – 0.8 0 – 1.0 0.5 0.10

3.0 Secondary Injection test :

3.1 Pick – up and Time – Current characteristics test:
Operating time, Sec
PS Ist PSM
TMS = 1.0 SS & TMS = 0.10
0.5 0.52 2 10.19 0.917
TMS Icl
5 4.334 0.426
0.3 0.58

3.0 General check – up :

Sr. No. Description Remarks
3.1 Inspection for physical damage OK
3.2 Wiring check OK
3.3 Cleaning and pressure of relay contacts OK
3.4 Service setting restored OK
3.5 Flag operation and resetting of flag with cover OK
3.6 Abnormality, if any NONE

4.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF IDMT CURRENT RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 06.01.2023
Plant 33 kV HT PANEL ROOM / VFD ROOM Tested by SRK
Location P – 12, TRANSFORMER FEEDER FOR TR – 11, 33 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Aux. supply
ALSTOM CDG 11 AF005SACH 1308 6842 0550 005 –

2.0 Service settings :

Range of relay Service setting
Current TMS Current TMS
0.2 – 0.8 0 – 1.0 0.5 0.25

3.0 Secondary Injection test :

3.1 Pick – up and Time – Current characteristics test:
Operating time, Sec
PS Ist PSM
TMS = 1.0 SS & TMS = 0.25
0.5 0.52 2 10.14 2.548
TMS Icl
5 4.319 1.60
0.3 0.60

3.0 General check – up :

Sr. No. Description Remarks
3.1 Inspection for physical damage OK
3.2 Wiring check OK
3.3 Cleaning and pressure of relay contacts OK
3.4 Service setting restored OK
3.5 Flag operation and resetting of flag with cover OK
3.6 Abnormality, if any NONE

4.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF AUXILIARY RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 06.01.2023
Plant 33 kV HT PANEL ROOM / VFD ROOM Tested by SRK
Location P – 12, TRANSFORMER FEEDER FOR TR – 11, 33 kV HT PANEL

1.0 Name plate details of relay :

Sr. No. Make Type Model No. Serial No. Aux. supply
1.1 AREVA VAJH 13 YF62B 1303 5170 0243 005 110 – 125 VDC
1.2 AREVA VAA 33 ZG8338BCH 1308 6843 0601 009 110 – 125 VDC
1.3 AREVA VAA 33 ZG8338BCH 1308 6843 0601 007 110 – 125 VDC
1.4 AREVA VAA 33 ZG8338BCH 1308 2895 0549 011 110 – 125 VDC
1.5 AREVA VAX 31 ZG8074BCH 1308 5871 0602 004 110 – 125 VDC

2.0 Coil resistance test :

Sr. No. Coil Designation Coil Resistance, kΩ
2.1 A 0.078
2.2 A/B/C 5.82 / 5.85 / 5.57
2.3 A/B/C 5.85 / 5.54 / 5.81
2.4 A/B/C 5.75 / 5.86 / 5.72
2.5 A/B/C 7.68 / 7.76 / 12.31

3.0 Coil pick – up and drop – off test :

Sr. No. Coil Designation Pick – up Volts Drop – off Volts
3.1 A 39 HAND RESET
3.2 A/B/C 68 / 68 / 72 HAND RESET
3.3 A/B/C 65 / 66 / 68 HAND RESET
3.4 A/B/C 68 / 69 / 71 HAND RESET
3.5 A/B/C 43 / 43 / 72 11 / 13 / 09

4.0 General check – up :

Sr. No. Description 1.1 1.2 1.3 1.4 1.5
4.1 Inspection for physical damage OK OK OK OK OK
4.2 Wiring check of relay OK OK OK OK OK
4.3 Cleaning and pressure of relay contacts OK OK OK OK OK
4.4 Flag operation and resetting of flags with cover OK OK OK OK OK
4.5 Abnormality, if any NONE NONE NONE NONE NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF MOTOR PROTECTION RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by SRK
Location P – 1, MAIN LINE PUMP A, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Rated In, A Aux. supply
ALSTHOM CTMM 509 DF117A 1303 7268 0301 001 5 110 – 125 VAC/DC

2.0 Service settings :

Unit Thermal Stalling, I1 (t)
Pre – trip
Ith, Thermal Pre – trip
Parameter I – th, A alarm, curve I1 (t), A t, Sec I1 (t) mode
curve Alarm in %
– Link
Setting 4.5 3a 90% A–B 3.6 14 PERM

Instantaneous – Over
Unit Unbalance, I2 Earth fault, Io
Current, I1
Parameter I1, A I2, A TI2, Sec Io, mA TIo, Sec K
Setting 6 3.1 4.6 200 1.6 5

3.0 Auxiliary DC Unit operation check : Auxiliary supply shall be monitored by Vx – ON LED.
DC Applied Vdc: 27 V
Relay Operation: OK

4.0 Thermal and Pre – trip alarm unit check [Ith] :

Operating
I1 – th, Thermal curve Injected Terminal numbers Operation Thermal
time, Sec
A s/w position current, A indicator reset
A B A B
1a 16.35 7,8 9,10 6.12 6.12 OK OK
5.0 2a 16.35 7,8 9,10 11.99 11.99 OK OK
3a 16.35 7,8 9,10 23.92 23.92 OK OK
Pre – trip alarm LED operates after 25.11Sec.

5.0 Stalling protection unit check [I1(t)] : PERM mode

Operating range of current, A Time delay unit
Relay Set
current Operating
Non operating Operating Set time, s Opn. Indicator
time, s
3.6 X In 18.0 18.3 14.0 14.02 OK
6.0 Instantaneous over current unit check [ I1 ] :
Operating range of current, A
Relay Set current Operation indicator
Non operating Operating
6.00 X In 30.0 31.5 OK

7.0 Negative Sequence unit check [ I2 ] :

Operating range of current, A Time delay unit
Relay Set
current Operating
Non operating Operating Set time, s Opn. Indicator
time, s
3.1 X In 23.25 24.99 4.60 4.78 OK

8.0 Earth fault protection unit check [ Io ] :

Time delay unit
Relay set current,A Operating current,A Operating
Set time, s Opn. Indicator
time, s
0.20 0.21 1.60 1.586 OK

9.0 General check – up :

Sr. No. Description Remarks
9.1 Inspection for physical damage NONE
9.2 Service settings restored OK
9.3 Cleaning and pressure of contacts OK
9.4 Trip isolating contacts OK
9.5 Flag operation and resetting of flags OK
9.6 Abnormality, if any NONE

10.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF TIME DELAY RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 1, MAIN LINE PUMP A, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Aux. supply
ALSTOM VTT 11 ZG8143BCH 1303 4423 0240 004 110 V DC

1.1 Service settings :

Range of relay, s Service Setting, s
0.5 – 5.0 2.0

2.0 Pick – up test :

Pick – up Volts Drop – off Volts
16.0 8.80

3.0 Timer unit test :

Time setting, s Operating time, s
2.0 2.054
1.0 1.123
5.0 5.085

4.0 General check–up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Wiring check OK
4.3 Service setting restored OK
4.4 Cleaning of relay contacts OK
4.5 Flag operation and resetting of flags with cover OK
4.6 Abnormality, if any NONE

5.0 Remarks :TESTED AS ABOVE

 TEST CERTIFICATE OF AUXILIARY RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 1, MAIN LINE PUMP A, 6.6 kV HT PANEL

1.0 Name plate details of relay :

Sr. No. Make Type Model No. Serial No. Aux. supply
1.1 ALSTOM VAJH 13 YF62B 1303 5170 0243 007 110 – 125 V DC
1.2 ALSTOM VAJH 13 YF62B 1302 3227 0141 007 110 – 125 V DC
1.3 ALSTOM VAX 31 ZG8074BCH 1301 9289 0125 008 110 – 125 V DC

2.0 Coil resistance test :

Sr. No. Coil Designation Coil Resistance, kΩ
2.1 A 0.080
2.2 A 0.079
2.3 A/B/C 7.73 / 7.43 / 12.44

3.0 Coil pick – up and drop – off test :

Sr. No. Coil Designation Pick – up Volts Drop – off Volts
3.1 A 39 HAND RESET
3.2 A 38 HAND RESET
3.3 A/B/C 44 / 43 / 71 13 / 15 / 10

4.0 General check – up :

Sr. No. Description 1.1 1.2 1.3
4.1 Inspection for physical damage OK OK OK
4.2 Wiring check of relay OK OK OK
4.3 Cleaning and pressure of relay contacts OK OK OK
4.4 Flag operation and resetting of flags with cover OK OK OK
4.5 Abnormality, if any NONE NONE NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF AUXILIARY RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 2, CAPACITOR - A, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Phase Make Type Model No. Serial No. Aux. supply
R ALSTOM CDG 31 EG 002SBCH 1303 4017 0239 001 –
E/F ALSTOM CDG 31 EG 002SBCH 1303 4017 0239 001 –
B ALSTOM CDG 31 EG 002SBCH 1303 4017 0239 001 –

2.0 Service settings :

Range of relay Service setting
Phase
A TMS A TMS
R 2.5 – 10 0 – 1.0 5.0 0.15
E/F 0.5 – 2.0 0 – 1.0 1.0 0.15
B 2.5 – 10 0 – 1.0 5.0 0.15

3.0 Secondary Injection test :

3.1 Pick – up test :
Phase R E/F B Phase R E/F B
PS 6.25 1.25 6.25 Starting current, A 6.48 1.30 6.49
TMS 0.30 0.30 0.30 Closing current, A 7.20 1.48 7.33
Continuity of all taps & plug bridge shorting contacts OK OK OK

3.2 Time current characteristics test :

PS Operating time, Sec
R E/F B PSM TMS = 1.0 SS &TMS = 0.15
A R E/F B R E/F B
2 10.02 10.15 10.52 1.432 1.452 1.461
5.0 / 1.0 / 5.0
5 4.328 4.335 4.389 0.559 0.621 0.592

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Cleaning and pressure of relay contacts OK
4.3 Service settings restored OK
4.4 Flag operation and resetting of flags with cover OK
4.5 CT shorting contacts in relay case OK
4.6 Abnormality, if any NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF IDMT VOLTAGE RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 2, CAPACITOR - A, 6.6 kV HT PANEL
1.0 Name plate details of relay :
Make Type Model No. Serial No. Aux. supply
ALSTOM VDG14 AF 9001ACH 1302 9541 0217 004 24 – 250 V DC

2.0 Service settings :

Range of relay Service setting
Volts TMS Volts TMS
5.4 – 20.0 0 – 1.0 12.50 0.10

3.0 Secondary Injection test :

3.1 Pick – up and Time – Voltage characteristics test :
Operating time, s
PS PSM
TMS = 1.0 SS & TMS = 0.1
2 32.52 2.992
12.50
5 11.23 0.929

Operating time, s
PS PSM
TMS = 1.0 SS & TMS = 0.1
2 32.45 2.995
12.50
5 11.012 1.082

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Wiring check after test if removed OK
4.3 Cleaning of relay contacts OK
4.4 Service setting restored OK
4.5 Flag operation and resetting of flag with cover OK
4.6 Abnormality, if any NONE

5.0 Remarks :TESTED AS ABOVE

 TEST CERTIFICATE OF OVER VOLTAGE RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 2, CAPACITOR - A, 6.6 kV HT PANEL

1.0 Name plate details of relay :

Make Model No. Serial No. Rated Voltage
ALSTOM VTU31AFBCH8001A 1303 0517 0221 002 110 VAC

2.0 Service settings :

Range of relay Service setting
%Vn (Inst.) = 105 – 170 130%
%Vn (t) =105 – 170 110%
Time = 0.5 – 5 3 Sec

3.0 Secondary Injection test :

Protection Stage Setting %Vn Pick – up Volt Set Time, s Opt. Time, s
%Vn (Inst.) 130 145 – –
%Vn (t) 110 123 3 2.892

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Wiring check OK
4.3 Cleaning of relay contacts OK
4.4 Service setting restored OK
4.5 Flag operation and resetting of flag with cover OK
4.6 Abnormality, if any NONE

5.0 Remarks :TESTED AS ABOVE

 TEST CERTIFICATE OF TIME DELAY RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 2, CAPACITOR - A, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Aux. supply
ALSTOM VTT 11 ZG8143BCH 1303 4423 0240 003 110 VDC

2.0 Service settings :

Range of relay, s Service Setting, s
0.5 – 5.0 0.5

3.0 Pick – up test :

Pick – up Volts Drop – off Volts
18 8

4.0 Timer unit test :

Time setting, s Operating time, s
0.5 0.554
1.0 1.095
5.0 5.088

5.0 General check–up :

Sr. No. Description Remarks
5.1 Inspection for physical damage OK
5.2 Wiring check OK
5.3 Service setting restored OK
5.4 Cleaning of relay contacts OK
5.5 Flag operation and resetting of flags with cover OK
5.6 Abnormality, if any NONE

6.0 Remarks :TESTED AS ABOVE

 TEST CERTIFICATE OF TIME DELAY RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 2, CAPACITOR - A, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Aux. supply
ALSTOM VTT 11 ZG8143BCH 1303 4424 0240 001 110 VDC

2.0 Service settings :

Range of relay, s Service Setting, s
0.5 – 5.0 0.6

3.0 Pick – up test :

Pick – up Volts Drop – off Volts
18 6

4.0 Timer unit test :

Time setting, s Operating time, s
0.6 0.599
1.0 1.123
2.0 2.051

5.0 General check–up :

Sr. No. Description Remarks
5.1 Inspection for physical damage OK
5.2 Wiring check OK
5.3 Service setting restored OK
5.4 Cleaning of relay contacts OK
5.5 Flag operation and resetting of flags with cover OK
5.6 Abnormality, if any NONE

6.0 Remarks :TESTED AS ABOVE

 TEST CERTIFICATE OF AUXILIARY RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 2, CAPACITOR - A, 6.6 kV HT PANEL

1.0 Name plate details of relay :

Sr. No. Make Type Model No. Serial No. Aux. supply
1.1 ALSTOM VAJH 13 YF62B 1303 5170 0243 008 110 – 125 V DC
1.2 ALSTOM VAX 31 ZG8072BCH 1303 3738 0237 006 30 V DC

2.0 Coil resistance test :

Sr. No. Coil Designation Coil Resistance, kΩ
2.1 A 0.081
2.2 A/B/C 0.325 / 0.353 / 0.357

3.0 Coil pick – up and drop – off test :

Sr. No. Coil Designation Pick – up Volts Drop – off Volts
3.1 A 37 HAND RESET
3.2 A/B/C 12 / 13 / 16 6/6/5

4.0 General check – up :

Sr. No. Description 1.1 1.2
4.1 Inspection for physical damage OK OK
4.2 Wiring check of relay OK REMARK
4.3 Cleaning and pressure of relay contacts OK OK
4.4 Flag operation and resetting of flags with cover OK OK
4.5 Abnormality, if any NONE NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF INSTANTANEOUS VOLTAGE RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 3, BUS PT, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Rated Voltage
ALSTOM VAGM 22 AF171G 1303 4365 0240 004 110 V AC

2.0 Service settings :

Range of relay, V Service Setting, V
44 – 88 88

3.0 Secondary Injection test :

Setting Volts Pick – up Volts Drop – off Volts
44 45 42
65.9 69 64
88 90 83

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Wiring check of relay OK
4.3 Cleaning and pressure of relay contacts OK
4.4 Service setting restored OK
4.5 Flag operation and resetting of flag with cover OK
4.6 Abnormality, if any NONE

5.0 Remarks :TESTED AS ABOVE

 TEST CERTIFICATE OF INSTANTANEOUS VOLTAGE RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 3, BUS PT, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Rated Voltage
ALSTOM VAGM 22 AF171G 1303 4365 0240 006 110 V AC

2.0 Service settings :

Range of relay, V Service Setting, V
44 – 88 88

3.0 Secondary Injection test :

Setting Volts Pick – up Volts Drop – off Volts
44 45 42
65.9 69 64
88 90 83

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Wiring check of relay OK
4.3 Cleaning and pressure of relay contacts OK
4.4 Service setting restored OK
4.5 Flag operation and resetting of flag with cover OK
4.6 Abnormality, if any NONE

4.0 Remarks :TESTED AS ABOVE

 TEST CERTIFICATE OF INSTANTANEOUS CURRENT RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 3, BUS PT, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Aux. supply
ALSTOM CAG 14 AF12A 1303 3894 0238 001 –

2.0 Service setting :

Range of relay, A Service setting, A
0.1 – 0.4 0.1

3.0 Secondary Injection test :

Pick – up current,
Current setting, A Drop off current, A Operating time at 5 times PS current
A
0.10 0.120 0.094
0.25 0.290 0.252 35 mS
0.40 0.428 0.362

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Wiring check OK
4.3 Cleaning and pressure of relay contacts OK
4.4 Continuity of plug shorting bridge contacts OK
4.5 Trip isolating contacts OK
4.6 Service setting restored OK
4.7 Flag operation and resetting of flag with cover OK
4.8 CT shorting contacts in relay case OK
4.9 Abnormality, if any NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF IDMT CURRENT RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 3, BUS PT, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Aux. supply
ALSTOM CDG 11 AF005SACH 1303 0737 0222 002 –

2.0 Service settings :

Range of relay Service setting
A TMS A TMS
0.2 – 0.8 0 – 1.0 0.3 0.275

3.0 Secondary Injection test :

3.1 Pick – up and Time – Current characteristics test:
Operating time, s
PS Ist PSM
TMS = 1.0 SS & TMS = 0.275
0.3 0.32 2 10.09 2.821
TMS Icl
5 4.322 1.234
0.3 0.41

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Wiring check OK
4.3 Cleaning and pressure of relay contacts OK
4.4 Service setting restored OK
4.5 Flag operation and resetting of flag with cover OK
4.6 Abnormality, if any NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF INSTANTANEOUS CURRENT RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 3, BUS PT, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Aux. supply
ALSTOM CDG 11 AF005SACH 1303 0737 0222 001 –

2.0 Service settings :

Range of relay Service setting
A TMS A TMS
0.2 – 0.8 0 – 1.0 0.2 0.2

3.0 Secondary Injection test :

3.1 Pick – up and Time – Current characteristics test:
Operating time, s
PS Ist PSM
TMS = 1.0 SS & TMS = 0.2
0.2 0.21 2 10.16 2.121
TMS Icl
5 4.361 0.868
0.3 0.26

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Wiring check OK
4.3 Cleaning and pressure of relay contacts OK
4.4 Service setting restored OK
4.5 Flag operation and resetting of flag with cover OK
4.6 Abnormality, if any NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF INSTANTANEOUS CURRENT RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 3, BUS PT, 6.6 kV HT PANEL

1.0 Name plate details of relay :

Make Type Model No. Serial No. Rated voltage Aux. Supply
ALSTOM VAG 21 ZG8428GCH 1303 0513 0221 001 110 VAC 110 VDC

2.0 Service setting :

Rated voltage, V Aux Voltage, V
NORMAL VOLTAGE = 110 VAC (FIX) NORMAL VOLTAGE = 110 VDC (FIX)
DROP – OFF VOLTAGE = 44 VAC (FIX) DROP – OFF VOLTAGE = 44 VDC (FIX)

3.0 Secondary Injection test :

3.1 AC Pick – up Test :
Pick – up Voltage, V Drop – off Voltage, V
74 43

3.2 DC Pick – up Test :

Pick – up Voltage, V Drop – off Voltage, V
78 37

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Wiring check of relay OK
4.3 Cleaning and pressure of relay contacts OK
4.4 Flag operation and resetting of flags with cover OK
4.5 Abnormality, if any NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF AUXILIARY RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 3, BUS PT, 6.6 kV HT PANEL

1.0 Name plate details of relay :

Sr. No. Make Type Model No. Serial No. Aux. supply
1.1 ALSTOM VAA 11 YF8405AFCH 1303 4418 0240 001 110/250 V DC
1.2 ALSTOM VAA 11 YF8402AFCH 1303 4953 0242 015 110/250 V DC
1.3 ALSTOM VAA 11 YF8402AFCH 1303 4953 0242 021 110/250 V DC

2.0 Coil resistance test :

Sr. No. Coil Designation Coil Resistance, kΩ
2.1 A 6.82
2.2 A 6.07
2.3 A 5.75

3.0 Coil pick – up and drop – off test :

Sr. No. Coil Designation Pick – up Volts Drop – off Volts
3.1 A 73 HAND RESET
3.2 A 73 HAND RESET
3.3 A 72 HAND RESET

4.0 General check – up :

Sr. No. Description 1.1 1.2 1.3
4.1 Inspection for physical damage OK OK OK
4.2 Wiring check of relay OK OK OK
4.3 Cleaning and pressure of relay contacts OK OK OK
4.4 Flag operation and resetting of flags with cover OK OK OK
4.5 Abnormality, if any NONE NONE NONE

5.0 Remarks : TESTED AS ABOVE

 TEST CERTIFICATE OF IDMT CURRENT RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 4, INCOMER – 1, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Phase Make Type Model No. Serial No. Aux. supply
R ALSTOM CDG 31 EG 002SBCH 1303 4015 0239 001 –
E/F ALSTOM CDG 31 EG 002SBCH 1303 4015 0239 001 –
B ALSTOM CDG 31 EG 002SBCH 1303 4015 0239 001 –

2.0 Service settings :

Range of relay Service setting
Phase
A TMS A TMS
R 2.5 – 10 0–1 8.75 0.2
E/F 0.5 – 2 0–1 1.00 0.5
B 2.5 – 10 0–1 5.00 0.2

3.0 Secondary Injection test :

3.1 Pick – up test :
Phase R E/F B Phase R E/F B
PS 6.25 1.25 6.25 Starting current, A 6.51 1.29 6.52
TMS 0.30 0.30 0.30 Closing current, A 7.75 1.51 7.75
Continuity of all taps & plug bridge shorting contacts OK OK OK

3.2 Time current characteristics test :

PS Operating time, s
R E/F B PSM TMS = 1.0 SS &TMS = 0.2 / 0.5
A R E/F B R E/F B
8.75 / 1.0 / 2 10.03 10.14 10.06 1.859 5.01 1.994
8.75 5 4.257 4.213 4.336 0.882 2.012 0.899

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Cleaning and pressure of relay contacts OK
4.3 Service settings restored OK
4.4 Flag operation and resetting of flags with cover OK
4.5 CT shorting contacts in relay case OK
4.6 Abnormality, if any NONE

5.0 Remarks : TESTED AS ABOVE

TEST CERTIFICATE OF INSTANTANEOUS VOLTAGE RELAY
Client BHARAT PETROLEUM CORPORATION LIMITED, MANMAD Tested on 12.01.2023
Plant 6.6 kV / 415 V SUBSTATION Tested by NKN
Location P – 4, INCOMER – 1, 6.6 kV HT PANEL

1.0 Name Plate details of relay :

Make Type Model No. Serial No. Rated Voltage
ALSTOM VAGM 22 AF171G 1303 4365 0240 001 110 V AC

2.0 Service settings :

Range of relay, V Service Setting, V
44 – 88 88

3.0 Secondary Injection test :

Setting Volts Pick – up Volts Drop – off Volts
44 48 42
65.9 70 62
88 90 83

4.0 General check – up :

Sr. No. Description Remarks
4.1 Inspection for physical damage OK
4.2 Wiring check of relay OK
4.3 Cleaning and pressure of relay contacts OK
4.4 Service setting restored OK
4.5 Flag operation and resetting of flag with cover OK
4.6 Abnormality, if any NONE

5.0 Remarks : TESTED AS ABOVE