Trafo.pdf
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View Trafo.pdf as PDF for free.
More details
- Words: 12,038
- Pages: 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-1
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Main Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 400.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
. Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
400A 400A 400A
Ia:1A
4000A
Ib:1A
4000A
Ic:1A
4000A
VL1:63.5V
76.2KV
VL2:63.5V
76.2KV
VL3:63.5V
76.2KV
Page 1 of 70
Differential Pickup: Side HV LV
R 393mA 350mA
Y 393mA 351mA
B 394mA 350mA
Y 875mA<240 1.05A<30
B 875mA<120 1.05A<270
RYB 262mA 315mA
Differential Stability: Side HV LV
R 875mA<0 1.05A<150
REF Pickup: 131mA; Trip Time: 41ms
Page 2 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 400.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4000.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0341 s N/T 0.0332 s N/T 0.0329 s N/T 0.0322 s N/T 0.0321 s N/T 0.0317 s 0.0315 s N/T N/T N/T 0.0310 s N/T 0.0318 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 3 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.137 A -180.000 ° 1.137 A 60.000 ° 1.137 A -60.000 ° 0.945 A -30.000 ° 0.945 A -150.000 ° 0.945 A 90.000 °
2 0.40 In 0.70 In 0.612 A -180.000 ° 0.612 A 60.000 ° 0.612 A -60.000 ° 0.315 A -30.000 ° 0.315 A -150.000 ° 0.315 A 90.000 °
3 0.50 In 1.60 In 1.400 A -180.000 ° 1.400 A 60.000 ° 1.400 A -60.000 ° 1.155 A -30.000 ° 1.155 A -150.000 ° 1.155 A 90.000 °
4 0.60 In 1.40 In 1.225 A -180.000 ° 1.225 A 60.000 ° 1.225 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
5 0.70 In 2.30 In 2.012 A -180.000 ° 2.012 A 60.000 ° 2.012 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
6 0.80 In 2.20 In 1.925 A -180.000 ° 1.925 A 60.000 ° 1.925 A -60.000 ° 1.470 A -30.000 ° 1.470 A -150.000 ° 1.470 A 90.000 °
7 0.90 In 2.70 In 2.362 A -180.000 ° 2.362 A
8 1.00 In 2.60 In 2.274 A -180.000 ° 2.274 A
9 1.50 In 3.70 In 3.237 A -180.000 ° 3.237 A
10 1.50 In 3.30 In 2.887 A -180.000 ° 2.887 A
11 3.00 In 6.10 In 5.336 A -180.000 ° 5.336 A
12 3.00 In 5.00 In 4.374 A -180.000 ° 4.374 A
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2:
Page 4 of 70
Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
60.000 ° 2.362 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
60.000 ° 2.274 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
60.000 ° 3.237 A -60.000 ° 2.309 A -30.000 ° 2.309 A -150.000 ° 2.309 A 90.000 °
60.000 ° 2.887 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
60.000 ° 5.336 A -60.000 ° 3.254 A -30.000 ° 3.254 A -150.000 ° 3.254 A 90.000 °
60.000 ° 4.374 A -60.000 ° 2.099 A -30.000 ° 2.099 A -150.000 ° 2.099 A 90.000 °
13 5.30 In 8.20 In 7.173 A -180.000 ° 7.173 A 60.000 ° 7.173 A -60.000 ° 3.044 A -30.000 ° 3.044 A -150.000 ° 3.044 A 90.000 °
14 2.70 In 9.30 In 8.135 A -180.000 ° 8.135 A 60.000 ° 8.135 A -60.000 ° 6.928 A -30.000 ° 6.928 A -150.000 ° 6.928 A 90.000 °
15 1.80 In 6.40 In 5.599 A -180.000 ° 5.599 A 60.000 ° 5.599 A -60.000 ° 4.829 A -30.000 ° 4.829 A -150.000 ° 4.829 A 90.000 °
16 5.90 In 10.30 In 9.010 A -180.000 ° 9.010 A 60.000 ° 9.010 A -60.000 ° 4.619 A -30.000 ° 4.619 A -150.000 ° 4.619 A 90.000 °
17 7.80 In 11.50 In 10.060 A -180.000 ° 10.060 A 60.000 ° 10.060 A -60.000 ° 3.884 A -30.000 ° 3.884 A -150.000 ° 3.884 A 90.000 °
18 4.10 In 8.30 In 7.261 A -180.000 ° 7.261 A 60.000 ° 7.261 A -60.000 ° 4.409 A -30.000 ° 4.409 A -150.000 ° 4.409 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.412 A -180.000 ° 3.412 A 60.000 ° 3.412 A -60.000 °
3.762 A -180.000 ° 3.762 A 60.000 ° 3.762 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.680 A Phase Secondary L1: -30.000 ° I Secondary L2: 1.680 A
3.674 A -30.000 ° 3.674 A
Page 5 of 70
Phase Secondary L2: -150.000 ° I Secondary L3: 1.680 A Phase Secondary L3: 90.000 °
-150.000 ° 3.674 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 6 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 7 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.31A
1.31A
1.32A
1.31A
Trip Time 2xIn
2.50sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
178msec
178m6sec
177msec
176sec
Page 8 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
275mA
274mA
275mA
Trip Time 2xIn
2.01sec
2.0sec
2.01sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
171msec
173msec
169msec
51N(DMT) Test repot:
Page 9 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-1
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Backup Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 450.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
. Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
450A 450A 450A
Ia:1A
4500A
Ib:1A
4500A
Ic:1A
4500A
Page 10 of 70
Differential Pickup: Side HV LV
R 349mA 311mA
Y 350mA 311mA
B 349mA 312mA
Y 777mA<240 933mA<30
B 777mA<120 933mA<270
RYB 232mA 281mA
Differential Stability: Side HV LV
R 777mA<0 933mA<150
Page 11 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 450.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4500.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
. Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0302 s N/T 0.0288 s N/T 0.0291 s N/T 0.0283 s N/T 0.0284 s N/T 0.0285 s 0.0289 s N/T N/T N/T 0.0281 s N/T 0.0277 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 12 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.011 A -180.000 ° 1.011 A 60.000 ° 1.011 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
2 0.40 In 0.70 In 0.544 A -180.000 ° 0.544 A 60.000 ° 0.544 A -60.000 ° 0.280 A -30.000 ° 0.280 A -150.000 ° 0.280 A 90.000 °
3 0.50 In 1.60 In 1.244 A -180.000 ° 1.244 A 60.000 ° 1.244 A -60.000 ° 1.026 A -30.000 ° 1.026 A -150.000 ° 1.026 A 90.000 °
4 0.60 In 1.40 In 1.089 A -180.000 ° 1.089 A 60.000 ° 1.089 A -60.000 ° 0.746 A -30.000 ° 0.746 A -150.000 ° 0.746 A 90.000 °
5 0.70 In 2.30 In 1.788 A -180.000 ° 1.788 A 60.000 ° 1.788 A -60.000 ° 1.493 A -30.000 ° 1.493 A -150.000 ° 1.493 A 90.000 °
6 0.80 In 2.20 In 1.711 A -180.000 ° 1.711 A 60.000 ° 1.711 A -60.000 ° 1.306 A -30.000 ° 1.306 A -150.000 ° 1.306 A 90.000 °
7 0.90 In 2.70 In 2.099 A -180.000 ° 2.099 A
8 1.00 In 2.60 In 2.022 A -180.000 ° 2.022 A
9 1.50 In 3.70 In 2.877 A -180.000 ° 2.877 A
10 1.50 In 3.30 In 2.566 A -180.000 ° 2.566 A
11 3.00 In 6.10 In 4.743 A -180.000 ° 4.743 A
12 3.00 In 5.00 In 3.888 A -180.000 ° 3.888 A
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2:
Page 13 of 70
Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
60.000 ° 2.099 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
60.000 ° 2.022 A -60.000 ° 1.493 A -30.000 ° 1.493 A -150.000 ° 1.493 A 90.000 °
60.000 ° 2.877 A -60.000 ° 2.053 A -30.000 ° 2.053 A -150.000 ° 2.053 A 90.000 °
60.000 ° 2.566 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
60.000 ° 4.743 A -60.000 ° 2.893 A -30.000 ° 2.893 A -150.000 ° 2.893 A 90.000 °
60.000 ° 3.888 A -60.000 ° 1.866 A -30.000 ° 1.866 A -150.000 ° 1.866 A 90.000 °
13 5.30 In 8.20 In 6.376 A -180.000 ° 6.376 A 60.000 ° 6.376 A -60.000 ° 2.706 A -30.000 ° 2.706 A -150.000 ° 2.706 A 90.000 °
14 2.70 In 9.30 In 7.231 A -180.000 ° 7.231 A 60.000 ° 7.231 A -60.000 ° 6.158 A -30.000 ° 6.158 A -150.000 ° 6.158 A 90.000 °
15 1.80 In 6.40 In 4.976 A -180.000 ° 4.976 A 60.000 ° 4.976 A -60.000 ° 4.292 A -30.000 ° 4.292 A -150.000 ° 4.292 A 90.000 °
16 5.90 In 10.30 In 8.009 A -180.000 ° 8.009 A 60.000 ° 8.009 A -60.000 ° 4.106 A -30.000 ° 4.106 A -150.000 ° 4.106 A 90.000 °
17 7.80 In 11.50 In 8.942 A -180.000 ° 8.942 A 60.000 ° 8.942 A -60.000 ° 3.452 A -30.000 ° 3.452 A -150.000 ° 3.452 A 90.000 °
18 4.10 In 8.30 In 6.454 A -180.000 ° 6.454 A 60.000 ° 6.454 A -60.000 ° 3.919 A -30.000 ° 3.919 A -150.000 ° 3.919 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.033 A -180.000 ° 3.033 A 60.000 ° 3.033 A -60.000 °
3.344 A -180.000 ° 3.344 A 60.000 ° 3.344 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.493 A Phase Secondary L1: -30.000 ° I Secondary L2: 1.493 A
3.266 A -30.000 ° 3.266 A
Page 14 of 70
Phase Secondary L2: -150.000 ° I Secondary L3: 1.493 A Phase Secondary L3: 90.000 °
-150.000 ° 3.266 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 15 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 16 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.31A
1.31A
1.32A
1.31A
Trip Time 2xIn
2.50sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
163msec
165m6sec
169msec
163msec
Page 17 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
274mA
274mA
275mA
Trip Time 2xIn
2.01sec
2.0sec
2.01sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
171msec
168msec
169msec
51N(DMT) Test repot:
Page 18 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-2
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Main Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 400.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
.
Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
400A 400A 400A
Ia:1A
4000A
Ib:1A
4000A
Ic:1A
4000A
VL1:63.5V
76.2KV
VL2:63.5V
76.2KV
VL3:63.5V
76.2KV
Page 19 of 70
Differential Pickup: Side HV LV
R 393mA 350mA
Y 394mA 351mA
B 394mA 349mA
Y 875mA<240 1.05A<30
B 875mA<120 1.05A<270
RYB 262mA 315mA
Differential Stability: Side HV LV
R 875mA<0 1.05A<150
REF Pickup: 131mA; Trip Time: 38ms
Page 20 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 400.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4000.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0341 s N/T 0.0332 s N/T 0.0329 s N/T 0.0322 s N/T 0.0321 s N/T 0.0317 s 0.0315 s N/T N/T N/T 0.0310 s N/T 0.0318 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 21 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.137 A -180.000 ° 1.137 A 60.000 ° 1.137 A -60.000 ° 0.945 A -30.000 ° 0.945 A -150.000 ° 0.945 A 90.000 °
2 0.40 In 0.70 In 0.612 A -180.000 ° 0.612 A 60.000 ° 0.612 A -60.000 ° 0.315 A -30.000 ° 0.315 A -150.000 ° 0.315 A 90.000 °
3 0.50 In 1.60 In 1.400 A -180.000 ° 1.400 A 60.000 ° 1.400 A -60.000 ° 1.155 A -30.000 ° 1.155 A -150.000 ° 1.155 A 90.000 °
4 0.60 In 1.40 In 1.225 A -180.000 ° 1.225 A 60.000 ° 1.225 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
5 0.70 In 2.30 In 2.012 A -180.000 ° 2.012 A 60.000 ° 2.012 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
6 0.80 In 2.20 In 1.925 A -180.000 ° 1.925 A 60.000 ° 1.925 A -60.000 ° 1.470 A -30.000 ° 1.470 A -150.000 ° 1.470 A 90.000 °
7 0.90 In 2.70 In 2.362 A -180.000 °
8 1.00 In 2.60 In 2.274 A -180.000 °
9 1.50 In 3.70 In 3.237 A -180.000 °
10 1.50 In 3.30 In 2.887 A -180.000 °
11 3.00 In 6.10 In 5.336 A -180.000 °
12 3.00 In 5.00 In 4.374 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 22 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
2.362 A 60.000 ° 2.362 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
2.274 A 60.000 ° 2.274 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
3.237 A 60.000 ° 3.237 A -60.000 ° 2.309 A -30.000 ° 2.309 A -150.000 ° 2.309 A 90.000 °
2.887 A 60.000 ° 2.887 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
5.336 A 60.000 ° 5.336 A -60.000 ° 3.254 A -30.000 ° 3.254 A -150.000 ° 3.254 A 90.000 °
4.374 A 60.000 ° 4.374 A -60.000 ° 2.099 A -30.000 ° 2.099 A -150.000 ° 2.099 A 90.000 °
13 5.30 In 8.20 In 7.173 A -180.000 ° 7.173 A 60.000 ° 7.173 A -60.000 ° 3.044 A -30.000 ° 3.044 A -150.000 ° 3.044 A 90.000 °
14 2.70 In 9.30 In 8.135 A -180.000 ° 8.135 A 60.000 ° 8.135 A -60.000 ° 6.928 A -30.000 ° 6.928 A -150.000 ° 6.928 A 90.000 °
15 1.80 In 6.40 In 5.599 A -180.000 ° 5.599 A 60.000 ° 5.599 A -60.000 ° 4.829 A -30.000 ° 4.829 A -150.000 ° 4.829 A 90.000 °
16 5.90 In 10.30 In 9.010 A -180.000 ° 9.010 A 60.000 ° 9.010 A -60.000 ° 4.619 A -30.000 ° 4.619 A -150.000 ° 4.619 A 90.000 °
17 7.80 In 11.50 In 10.060 A -180.000 ° 10.060 A 60.000 ° 10.060 A -60.000 ° 3.884 A -30.000 ° 3.884 A -150.000 ° 3.884 A 90.000 °
18 4.10 In 8.30 In 7.261 A -180.000 ° 7.261 A 60.000 ° 7.261 A -60.000 ° 4.409 A -30.000 ° 4.409 A -150.000 ° 4.409 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.412 A -180.000 ° 3.412 A 60.000 ° 3.412 A -60.000 °
3.762 A -180.000 ° 3.762 A 60.000 ° 3.762 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.680 A Phase Secondary L1: -30.000 °
3.674 A -30.000 °
Page 23 of 70
I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
1.680 A -150.000 ° 1.680 A 90.000 °
3.674 A -150.000 ° 3.674 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 24 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 25 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.32A
1.31A
1.31A
1.31A
Trip Time 2xIn
2.51sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
177msec
178m6sec
177msec
177sec
Page 26 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
275mA
274mA
274mA
Trip Time 2xIn
2.01sec
2.01sec
2.01sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
171msec
172msec
170msec
51N(DMT) Test repot:
Page 27 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-2
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Backup Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 450.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
. Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
450A 450A 450A
Ia:1A
4500A
Ib:1A
4500A
Ic:1A
4500A
Page 28 of 70
Differential Pickup: Side HV LV
R 349mA 311mA
Y 349mA 311mA
B 350mA 310mA
Y 777mA<240 933mA<30
B 777mA<120 933mA<270
RYB 233mA 282mA
Differential Stability: Side HV LV
R 777mA<0 933mA<150
Page 29 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 450.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4500.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0302 s N/T 0.0288 s N/T 0.0291 s N/T 0.0283 s N/T 0.0284 s N/T 0.0285 s 0.0289 s N/T N/T N/T 0.0281 s N/T 0.0277 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 30 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.011 A -180.000 ° 1.011 A 60.000 ° 1.011 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
2 0.40 In 0.70 In 0.544 A -180.000 ° 0.544 A 60.000 ° 0.544 A -60.000 ° 0.280 A -30.000 ° 0.280 A -150.000 ° 0.280 A 90.000 °
3 0.50 In 1.60 In 1.244 A -180.000 ° 1.244 A 60.000 ° 1.244 A -60.000 ° 1.026 A -30.000 ° 1.026 A -150.000 ° 1.026 A 90.000 °
4 0.60 In 1.40 In 1.089 A -180.000 ° 1.089 A 60.000 ° 1.089 A -60.000 ° 0.746 A -30.000 ° 0.746 A -150.000 ° 0.746 A 90.000 °
5 0.70 In 2.30 In 1.788 A -180.000 ° 1.788 A 60.000 ° 1.788 A -60.000 ° 1.493 A -30.000 ° 1.493 A -150.000 ° 1.493 A 90.000 °
6 0.80 In 2.20 In 1.711 A -180.000 ° 1.711 A 60.000 ° 1.711 A -60.000 ° 1.306 A -30.000 ° 1.306 A -150.000 ° 1.306 A 90.000 °
7 0.90 In 2.70 In 2.099 A -180.000 °
8 1.00 In 2.60 In 2.022 A -180.000 °
9 1.50 In 3.70 In 2.877 A -180.000 °
10 1.50 In 3.30 In 2.566 A -180.000 °
11 3.00 In 6.10 In 4.743 A -180.000 °
12 3.00 In 5.00 In 3.888 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 31 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
2.099 A 60.000 ° 2.099 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
2.022 A 60.000 ° 2.022 A -60.000 ° 1.493 A -30.000 ° 1.493 A -150.000 ° 1.493 A 90.000 °
2.877 A 60.000 ° 2.877 A -60.000 ° 2.053 A -30.000 ° 2.053 A -150.000 ° 2.053 A 90.000 °
2.566 A 60.000 ° 2.566 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
4.743 A 60.000 ° 4.743 A -60.000 ° 2.893 A -30.000 ° 2.893 A -150.000 ° 2.893 A 90.000 °
3.888 A 60.000 ° 3.888 A -60.000 ° 1.866 A -30.000 ° 1.866 A -150.000 ° 1.866 A 90.000 °
13 5.30 In 8.20 In 6.376 A -180.000 ° 6.376 A 60.000 ° 6.376 A -60.000 ° 2.706 A -30.000 ° 2.706 A -150.000 ° 2.706 A 90.000 °
14 2.70 In 9.30 In 7.231 A -180.000 ° 7.231 A 60.000 ° 7.231 A -60.000 ° 6.158 A -30.000 ° 6.158 A -150.000 ° 6.158 A 90.000 °
15 1.80 In 6.40 In 4.976 A -180.000 ° 4.976 A 60.000 ° 4.976 A -60.000 ° 4.292 A -30.000 ° 4.292 A -150.000 ° 4.292 A 90.000 °
16 5.90 In 10.30 In 8.009 A -180.000 ° 8.009 A 60.000 ° 8.009 A -60.000 ° 4.106 A -30.000 ° 4.106 A -150.000 ° 4.106 A 90.000 °
17 7.80 In 11.50 In 8.942 A -180.000 ° 8.942 A 60.000 ° 8.942 A -60.000 ° 3.452 A -30.000 ° 3.452 A -150.000 ° 3.452 A 90.000 °
18 4.10 In 8.30 In 6.454 A -180.000 ° 6.454 A 60.000 ° 6.454 A -60.000 ° 3.919 A -30.000 ° 3.919 A -150.000 ° 3.919 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.033 A -180.000 ° 3.033 A 60.000 ° 3.033 A -60.000 °
3.344 A -180.000 ° 3.344 A 60.000 ° 3.344 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.493 A Phase Secondary L1: -30.000 °
3.266 A -30.000 °
Page 32 of 70
I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
1.493 A -150.000 ° 1.493 A 90.000 °
3.266 A -150.000 ° 3.266 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 33 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 34 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.31A
1.30A
1.32A
1.30A
Trip Time 2xIn
2.50sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
168msec
171m6sec
171msec
168msec
Page 35 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
274mA
274mA
275mA
Trip Time 2xIn
2.01sec
2.0sec
2.01sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
168msec
171msec
169msec
51N(DMT) Test repot:
Page 36 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-3
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Main Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 400.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
.
Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
400A 400A 400A
Ia:1A
4000A
Ib:1A
4000A
Ic:1A
4000A
VL1:63.5V
76.2KV
VL2:63.5V
76.2KV
VL3:63.5V
76.2KV
Page 37 of 70
Differential Pickup: Side HV LV
R 393mA 351mA
Y 393mA 349mA
B 394mA 350mA
Y 875mA<240 1.05A<30
B 875mA<120 1.05A<270
RYB 261mA 315mA
Differential Stability: Side HV LV
R 875mA<0 1.05A<150
REF Pickup: 131mA; Trip Time: 41ms
Page 38 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 400.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4000.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0332 s N/T 0.0322 s N/T 0.0318 s N/T 0.0324 s N/T 0.0327 s N/T 0.0320 s 0.0303 s N/T N/T N/T 0.0314 s N/T 0.0318 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 39 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.137 A -180.000 ° 1.137 A 60.000 ° 1.137 A -60.000 ° 0.945 A -30.000 ° 0.945 A -150.000 ° 0.945 A 90.000 °
2 0.40 In 0.70 In 0.612 A -180.000 ° 0.612 A 60.000 ° 0.612 A -60.000 ° 0.315 A -30.000 ° 0.315 A -150.000 ° 0.315 A 90.000 °
3 0.50 In 1.60 In 1.400 A -180.000 ° 1.400 A 60.000 ° 1.400 A -60.000 ° 1.155 A -30.000 ° 1.155 A -150.000 ° 1.155 A 90.000 °
4 0.60 In 1.40 In 1.225 A -180.000 ° 1.225 A 60.000 ° 1.225 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
5 0.70 In 2.30 In 2.012 A -180.000 ° 2.012 A 60.000 ° 2.012 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
6 0.80 In 2.20 In 1.925 A -180.000 ° 1.925 A 60.000 ° 1.925 A -60.000 ° 1.470 A -30.000 ° 1.470 A -150.000 ° 1.470 A 90.000 °
7 0.90 In 2.70 In 2.362 A -180.000 °
8 1.00 In 2.60 In 2.274 A -180.000 °
9 1.50 In 3.70 In 3.237 A -180.000 °
10 1.50 In 3.30 In 2.887 A -180.000 °
11 3.00 In 6.10 In 5.336 A -180.000 °
12 3.00 In 5.00 In 4.374 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 40 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
2.362 A 60.000 ° 2.362 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
2.274 A 60.000 ° 2.274 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
3.237 A 60.000 ° 3.237 A -60.000 ° 2.309 A -30.000 ° 2.309 A -150.000 ° 2.309 A 90.000 °
2.887 A 60.000 ° 2.887 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
5.336 A 60.000 ° 5.336 A -60.000 ° 3.254 A -30.000 ° 3.254 A -150.000 ° 3.254 A 90.000 °
4.374 A 60.000 ° 4.374 A -60.000 ° 2.099 A -30.000 ° 2.099 A -150.000 ° 2.099 A 90.000 °
13 5.30 In 8.20 In 7.173 A -180.000 ° 7.173 A 60.000 ° 7.173 A -60.000 ° 3.044 A -30.000 ° 3.044 A -150.000 ° 3.044 A 90.000 °
14 2.70 In 9.30 In 8.135 A -180.000 ° 8.135 A 60.000 ° 8.135 A -60.000 ° 6.928 A -30.000 ° 6.928 A -150.000 ° 6.928 A 90.000 °
15 1.80 In 6.40 In 5.599 A -180.000 ° 5.599 A 60.000 ° 5.599 A -60.000 ° 4.829 A -30.000 ° 4.829 A -150.000 ° 4.829 A 90.000 °
16 5.90 In 10.30 In 9.010 A -180.000 ° 9.010 A 60.000 ° 9.010 A -60.000 ° 4.619 A -30.000 ° 4.619 A -150.000 ° 4.619 A 90.000 °
17 7.80 In 11.50 In 10.060 A -180.000 ° 10.060 A 60.000 ° 10.060 A -60.000 ° 3.884 A -30.000 ° 3.884 A -150.000 ° 3.884 A 90.000 °
18 4.10 In 8.30 In 7.261 A -180.000 ° 7.261 A 60.000 ° 7.261 A -60.000 ° 4.409 A -30.000 ° 4.409 A -150.000 ° 4.409 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.412 A -180.000 ° 3.412 A 60.000 ° 3.412 A -60.000 °
3.762 A -180.000 ° 3.762 A 60.000 ° 3.762 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.680 A Phase Secondary L1: -30.000 °
3.674 A -30.000 °
Page 41 of 70
I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
1.680 A -150.000 ° 1.680 A 90.000 °
3.674 A -150.000 ° 3.674 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 42 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 43 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.31A
1.31A
1.32A
1.31A
Trip Time 2xIn
2.50sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
178msec
179m6sec
177msec
176sec
Page 44 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
275mA
274mA
275mA
Trip Time 2xIn
2.01sec
2.0sec
2.01sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
171msec
173msec
169msec
51N(DMT) Test repot:
Page 45 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-3
Bay address:
.
.
.
Device: Name/description: Device type:
GE345 Manufacturer: Transformer differential protection Device address:
GE Backup Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 450.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
.
Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
450A 450A 450A
Ia:1A
4500A
Ib:1A
4500A
Ic:1A
4500A
Page 46 of 70
Differential Pickup: Side HV LV
R 436mA 302mA
Y 436mA 301mA
B 435mA 301mA
Y 777mA<240 933mA<30
B 777mA<120 933mA<270
RYB 250mA 300mA
Differential Stability: Side HV LV
R 777mA<0 933mA<150
Page 47 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 450.00 A 1.00 A tow. Prot. Obj. 200.00 A 1.00 A n/a
Secondary 4500.00 A 1.00 A tow. Prot. Obj. 800.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.20 In 0.50 In 0.20 In 1.10 In 2.00 In 3.60 In 3.20 In 1.80 In 4.30 In 5.70 In 4.40 In 1.40 In 3.60 In 0.50 In 5.30 In 6.60 In
0.20 In 0.50 In 1.30 In 1.30 In 1.70 In 2.90 In 3.50 In 3.70 In 2.20 In 4.60 In 6.00 In 4.10 In 4.30 In 5.40 In 1.90 In 5.00 In 6.30 In
Nominal Trip Time 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T N/T 0.0300 s N/T N/T N/T 0.0300 s 0.0300 s
Actual Trip Time 0.0361 s N/T 0.0352 s N/T 0.0352 s N/T 0.0343 s N/T 0.0336 s N/T N/T 0.0334 s N/T N/T N/T 0.0333 s 0.0341 s
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 48 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 0.20 In 0.200 A -180.000 ° 0.200 A 60.000 ° 0.200 A -60.000 ° 0.240 A 150.000 ° 0.240 A 30.000 ° 0.240 A -90.000 °
2 0.20 In 0.50 In 0.500 A -180.000 ° 0.500 A 60.000 ° 0.500 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
3 0.50 In 1.30 In 1.300 A -180.000 ° 1.300 A 60.000 ° 1.300 A -60.000 ° 0.960 A -30.000 ° 0.960 A -150.000 ° 0.960 A 90.000 °
4 0.20 In 1.30 In 1.300 A -180.000 ° 1.300 A 60.000 ° 1.300 A -60.000 ° 1.320 A -30.000 ° 1.320 A -150.000 ° 1.320 A 90.000 °
5 1.10 In 1.70 In 1.700 A -180.000 ° 1.700 A 60.000 ° 1.700 A -60.000 ° 0.720 A -30.000 ° 0.720 A -150.000 ° 0.720 A 90.000 °
6 2.00 In 2.90 In 2.900 A -180.000 ° 2.900 A 60.000 ° 2.900 A -60.000 ° 1.080 A -30.000 ° 1.080 A -150.000 ° 1.080 A 90.000 °
7 3.60 In 3.50 In 3.500 A -180.000 °
8 3.20 In 3.70 In 3.700 A -180.000 °
9 1.80 In 2.20 In 2.200 A -180.000 °
10 4.30 In 4.60 In 4.600 A -180.000 °
11 5.70 In 6.00 In 6.000 A -180.000 °
12 4.40 In 4.10 In 4.100 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 49 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
3.500 A 60.000 ° 3.500 A -60.000 ° 0.120 A 150.000 ° 0.120 A 30.000 ° 0.120 A -90.000 °
3.700 A 60.000 ° 3.700 A -60.000 ° 0.600 A -30.000 ° 0.600 A -150.000 ° 0.600 A 90.000 °
2.200 A 60.000 ° 2.200 A -60.000 ° 0.480 A -30.000 ° 0.480 A -150.000 ° 0.480 A 90.000 °
4.600 A 60.000 ° 4.600 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
6.000 A 60.000 ° 6.000 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
Shot
13
14
15
16
17
Idiff: Ibias:
1.40 In 4.30 In
3.60 In 5.40 In
0.50 In 1.90 In
5.30 In 5.00 In
6.60 In 6.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
4.300 A -180.000 ° 4.300 A 60.000 ° 4.300 A -60.000 °
5.400 A -180.000 ° 5.400 A 60.000 ° 5.400 A -60.000 °
1.900 A -180.000 ° 1.900 A 60.000 ° 1.900 A -60.000 °
5.000 A -180.000 ° 5.000 A 60.000 ° 5.000 A -60.000 °
6.300 A -180.000 ° 6.300 A 60.000 ° 6.300 A -60.000 °
I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
3.480 A -30.000 ° 3.480 A -150.000 ° 3.480 A 90.000 °
2.160 A -30.000 ° 2.160 A -150.000 ° 2.160 A 90.000 °
1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
4.100 A 60.000 ° 4.100 A -60.000 ° 0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed 17 out of 17 points tested. 17 points passed. 0 points failed.
Page 50 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.10 I/In 1.00 I/In 2.90 I/In 3.00 I/In 5.00 I/In 5.00 I/In
14.30 % 15.40 % 15.40 % 14.50 % 15.40 % 14.50 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
Yes No No Yes No Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 51 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.31A
1.31A
1.30A
1.30A
Trip Time 2xIn
2.50sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
168msec
169m6sec
171msec
168msec
Page 52 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
250mA
249mA
249mA
Trip Time 2xIn
2.03sec
2.03sec
2.04sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
173msec
176msec
174msec
51N(DMT) Test repot:
Page 53 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-4
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Main Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 400.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
.
.
.
Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
400A 400A 400A
Ia:1A
4000A
Ib:1A
4000A
Ic:1A
4000A
VL1:63.5V
76.2KV
VL2:63.5V
76.2KV
VL3:63.5V
76.2KV
Page 54 of 70
Differential Pickup: Side HV LV
R 394mA 350mA
Y 393mA 351mA
B 394mA 349mA
Y 875mA<240 1.05A<30
B 875mA<120 1.05A<270
RYB 263mA 314mA
Differential Stability: Side HV LV
R 875mA<0 1.05A<150
REF Pickup: 131mA; Trip Time: 40ms
Page 55 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 400.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4000.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
. Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0327 s N/T 0.0328 s N/T 0.0319 s N/T 0.0316 s N/T 0.0331 s N/T 0.0326 s 0.0318 s N/T N/T N/T 0.0318 s N/T 0.0315 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 56 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.137 A -180.000 ° 1.137 A 60.000 ° 1.137 A -60.000 ° 0.945 A -30.000 ° 0.945 A -150.000 ° 0.945 A 90.000 °
2 0.40 In 0.70 In 0.612 A -180.000 ° 0.612 A 60.000 ° 0.612 A -60.000 ° 0.315 A -30.000 ° 0.315 A -150.000 ° 0.315 A 90.000 °
3 0.50 In 1.60 In 1.400 A -180.000 ° 1.400 A 60.000 ° 1.400 A -60.000 ° 1.155 A -30.000 ° 1.155 A -150.000 ° 1.155 A 90.000 °
4 0.60 In 1.40 In 1.225 A -180.000 ° 1.225 A 60.000 ° 1.225 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
5 0.70 In 2.30 In 2.012 A -180.000 ° 2.012 A 60.000 ° 2.012 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
6 0.80 In 2.20 In 1.925 A -180.000 ° 1.925 A 60.000 ° 1.925 A -60.000 ° 1.470 A -30.000 ° 1.470 A -150.000 ° 1.470 A 90.000 °
7 0.90 In 2.70 In 2.362 A -180.000 °
8 1.00 In 2.60 In 2.274 A -180.000 °
9 1.50 In 3.70 In 3.237 A -180.000 °
10 1.50 In 3.30 In 2.887 A -180.000 °
11 3.00 In 6.10 In 5.336 A -180.000 °
12 3.00 In 5.00 In 4.374 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 57 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
2.362 A 60.000 ° 2.362 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
2.274 A 60.000 ° 2.274 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
3.237 A 60.000 ° 3.237 A -60.000 ° 2.309 A -30.000 ° 2.309 A -150.000 ° 2.309 A 90.000 °
2.887 A 60.000 ° 2.887 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
5.336 A 60.000 ° 5.336 A -60.000 ° 3.254 A -30.000 ° 3.254 A -150.000 ° 3.254 A 90.000 °
4.374 A 60.000 ° 4.374 A -60.000 ° 2.099 A -30.000 ° 2.099 A -150.000 ° 2.099 A 90.000 °
13 5.30 In 8.20 In 7.173 A -180.000 ° 7.173 A 60.000 ° 7.173 A -60.000 ° 3.044 A -30.000 ° 3.044 A -150.000 ° 3.044 A 90.000 °
14 2.70 In 9.30 In 8.135 A -180.000 ° 8.135 A 60.000 ° 8.135 A -60.000 ° 6.928 A -30.000 ° 6.928 A -150.000 ° 6.928 A 90.000 °
15 1.80 In 6.40 In 5.599 A -180.000 ° 5.599 A 60.000 ° 5.599 A -60.000 ° 4.829 A -30.000 ° 4.829 A -150.000 ° 4.829 A 90.000 °
16 5.90 In 10.30 In 9.010 A -180.000 ° 9.010 A 60.000 ° 9.010 A -60.000 ° 4.619 A -30.000 ° 4.619 A -150.000 ° 4.619 A 90.000 °
17 7.80 In 11.50 In 10.060 A -180.000 ° 10.060 A 60.000 ° 10.060 A -60.000 ° 3.884 A -30.000 ° 3.884 A -150.000 ° 3.884 A 90.000 °
18 4.10 In 8.30 In 7.261 A -180.000 ° 7.261 A 60.000 ° 7.261 A -60.000 ° 4.409 A -30.000 ° 4.409 A -150.000 ° 4.409 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.412 A -180.000 ° 3.412 A 60.000 ° 3.412 A -60.000 °
3.762 A -180.000 ° 3.762 A 60.000 ° 3.762 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.680 A Phase Secondary L1: -30.000 °
3.674 A -30.000 °
Page 58 of 70
I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
1.680 A -150.000 ° 1.680 A 90.000 °
3.674 A -150.000 ° 3.674 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 59 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 60 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.32A
1.31A
1.32A
1.31A
Trip Time 2xIn
2.51sec
2.50sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
179msec
180m6sec
176msec
176sec
Page 61 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
275mA
274mA
275mA
Trip Time 2xIn
2.01sec
2.0sec
2.02sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
171msec
168msec
174msec
51N(DMT) Test repot:
Page 62 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-4
Bay address:
.
.
.
Device: Name/description: Device type:
GE345 Manufacturer: Transformer differential protection Device address:
GE Backup Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 450.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
. Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
450A 450A 450A
Ia:1A
4500A
Ib:1A
4500A
Ic:1A
4500A
Page 63 of 70
Differential Pickup: Side HV LV
R 436mA 305mA
Y 435mA 305mA
B 436mA 305mA
Y 777mA<240 933mA<30
B 777mA<120 933mA<270
RYB 250mA 300mA
Differential Stability: Side HV LV
R 777mA<0 933mA<150
Page 64 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 450.00 A 1.00 A tow. Prot. Obj. 200.00 A 1.00 A n/a
Secondary 4500.00 A 1.00 A tow. Prot. Obj. 800.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.20 In 0.50 In 0.20 In 1.10 In 2.00 In 3.60 In 3.20 In 1.80 In 4.30 In 5.70 In 4.40 In 1.40 In 3.60 In 0.50 In 5.30 In 6.60 In
0.20 In 0.50 In 1.30 In 1.30 In 1.70 In 2.90 In 3.50 In 3.70 In 2.20 In 4.60 In 6.00 In 4.10 In 4.30 In 5.40 In 1.90 In 5.00 In 6.30 In
Nominal Trip Time 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T N/T 0.0300 s N/T N/T N/T 0.0300 s 0.0300 s
Actual Trip Time 0.0342 s N/T 0.0338 s N/T 0.0356 s N/T 0.0367 s N/T 0.0378 s N/T N/T 0.0360 s N/T N/T N/T 0.0385 s 0.0383 s
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 65 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 0.20 In 0.200 A -180.000 ° 0.200 A 60.000 ° 0.200 A -60.000 ° 0.240 A 150.000 ° 0.240 A 30.000 ° 0.240 A -90.000 °
2 0.20 In 0.50 In 0.500 A -180.000 ° 0.500 A 60.000 ° 0.500 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
3 0.50 In 1.30 In 1.300 A -180.000 ° 1.300 A 60.000 ° 1.300 A -60.000 ° 0.960 A -30.000 ° 0.960 A -150.000 ° 0.960 A 90.000 °
4 0.20 In 1.30 In 1.300 A -180.000 ° 1.300 A 60.000 ° 1.300 A -60.000 ° 1.320 A -30.000 ° 1.320 A -150.000 ° 1.320 A 90.000 °
5 1.10 In 1.70 In 1.700 A -180.000 ° 1.700 A 60.000 ° 1.700 A -60.000 ° 0.720 A -30.000 ° 0.720 A -150.000 ° 0.720 A 90.000 °
6 2.00 In 2.90 In 2.900 A -180.000 ° 2.900 A 60.000 ° 2.900 A -60.000 ° 1.080 A -30.000 ° 1.080 A -150.000 ° 1.080 A 90.000 °
7 3.60 In 3.50 In 3.500 A -180.000 °
8 3.20 In 3.70 In 3.700 A -180.000 °
9 1.80 In 2.20 In 2.200 A -180.000 °
10 4.30 In 4.60 In 4.600 A -180.000 °
11 5.70 In 6.00 In 6.000 A -180.000 °
12 4.40 In 4.10 In 4.100 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 66 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
3.500 A 60.000 ° 3.500 A -60.000 ° 0.120 A 150.000 ° 0.120 A 30.000 ° 0.120 A -90.000 °
3.700 A 60.000 ° 3.700 A -60.000 ° 0.600 A -30.000 ° 0.600 A -150.000 ° 0.600 A 90.000 °
2.200 A 60.000 ° 2.200 A -60.000 ° 0.480 A -30.000 ° 0.480 A -150.000 ° 0.480 A 90.000 °
4.600 A 60.000 ° 4.600 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
6.000 A 60.000 ° 6.000 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
Shot
13
14
15
16
17
Idiff: Ibias:
1.40 In 4.30 In
3.60 In 5.40 In
0.50 In 1.90 In
5.30 In 5.00 In
6.60 In 6.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
4.300 A -180.000 ° 4.300 A 60.000 ° 4.300 A -60.000 °
5.400 A -180.000 ° 5.400 A 60.000 ° 5.400 A -60.000 °
1.900 A -180.000 ° 1.900 A 60.000 ° 1.900 A -60.000 °
5.000 A -180.000 ° 5.000 A 60.000 ° 5.000 A -60.000 °
6.300 A -180.000 ° 6.300 A 60.000 ° 6.300 A -60.000 °
I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
3.480 A -30.000 ° 3.480 A -150.000 ° 3.480 A 90.000 °
2.160 A -30.000 ° 2.160 A -150.000 ° 2.160 A 90.000 °
1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
4.100 A 60.000 ° 4.100 A -60.000 ° 0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed 17 out of 17 points tested. 17 points passed. 0 points failed.
Page 67 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
3.00 I/In 5.00 I/In 4.90 I/In 0.70 I/In 3.30 I/In 0.90 I/In
15.60 % 15.70 % 14.50 % 15.50 % 14.30 % 14.30 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No Yes No Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 68 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.29A
1.31A
1.28A
1.28A
Trip Time 2xIn
2.51sec
2.53sec
2.51sec
2.51sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
173msec
168m6sec
171msec
168msec
Page 69 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
251mA
250mA
249mA
Trip Time 2xIn
2.03sec
2.05sec
2.02sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
175msec
172msec
173msec
51N(DMT) Test repot:
Page 70 of 70
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-1
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Main Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 400.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
. Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
400A 400A 400A
Ia:1A
4000A
Ib:1A
4000A
Ic:1A
4000A
VL1:63.5V
76.2KV
VL2:63.5V
76.2KV
VL3:63.5V
76.2KV
Page 1 of 70
Differential Pickup: Side HV LV
R 393mA 350mA
Y 393mA 351mA
B 394mA 350mA
Y 875mA<240 1.05A<30
B 875mA<120 1.05A<270
RYB 262mA 315mA
Differential Stability: Side HV LV
R 875mA<0 1.05A<150
REF Pickup: 131mA; Trip Time: 41ms
Page 2 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 400.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4000.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0341 s N/T 0.0332 s N/T 0.0329 s N/T 0.0322 s N/T 0.0321 s N/T 0.0317 s 0.0315 s N/T N/T N/T 0.0310 s N/T 0.0318 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 3 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.137 A -180.000 ° 1.137 A 60.000 ° 1.137 A -60.000 ° 0.945 A -30.000 ° 0.945 A -150.000 ° 0.945 A 90.000 °
2 0.40 In 0.70 In 0.612 A -180.000 ° 0.612 A 60.000 ° 0.612 A -60.000 ° 0.315 A -30.000 ° 0.315 A -150.000 ° 0.315 A 90.000 °
3 0.50 In 1.60 In 1.400 A -180.000 ° 1.400 A 60.000 ° 1.400 A -60.000 ° 1.155 A -30.000 ° 1.155 A -150.000 ° 1.155 A 90.000 °
4 0.60 In 1.40 In 1.225 A -180.000 ° 1.225 A 60.000 ° 1.225 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
5 0.70 In 2.30 In 2.012 A -180.000 ° 2.012 A 60.000 ° 2.012 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
6 0.80 In 2.20 In 1.925 A -180.000 ° 1.925 A 60.000 ° 1.925 A -60.000 ° 1.470 A -30.000 ° 1.470 A -150.000 ° 1.470 A 90.000 °
7 0.90 In 2.70 In 2.362 A -180.000 ° 2.362 A
8 1.00 In 2.60 In 2.274 A -180.000 ° 2.274 A
9 1.50 In 3.70 In 3.237 A -180.000 ° 3.237 A
10 1.50 In 3.30 In 2.887 A -180.000 ° 2.887 A
11 3.00 In 6.10 In 5.336 A -180.000 ° 5.336 A
12 3.00 In 5.00 In 4.374 A -180.000 ° 4.374 A
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2:
Page 4 of 70
Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
60.000 ° 2.362 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
60.000 ° 2.274 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
60.000 ° 3.237 A -60.000 ° 2.309 A -30.000 ° 2.309 A -150.000 ° 2.309 A 90.000 °
60.000 ° 2.887 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
60.000 ° 5.336 A -60.000 ° 3.254 A -30.000 ° 3.254 A -150.000 ° 3.254 A 90.000 °
60.000 ° 4.374 A -60.000 ° 2.099 A -30.000 ° 2.099 A -150.000 ° 2.099 A 90.000 °
13 5.30 In 8.20 In 7.173 A -180.000 ° 7.173 A 60.000 ° 7.173 A -60.000 ° 3.044 A -30.000 ° 3.044 A -150.000 ° 3.044 A 90.000 °
14 2.70 In 9.30 In 8.135 A -180.000 ° 8.135 A 60.000 ° 8.135 A -60.000 ° 6.928 A -30.000 ° 6.928 A -150.000 ° 6.928 A 90.000 °
15 1.80 In 6.40 In 5.599 A -180.000 ° 5.599 A 60.000 ° 5.599 A -60.000 ° 4.829 A -30.000 ° 4.829 A -150.000 ° 4.829 A 90.000 °
16 5.90 In 10.30 In 9.010 A -180.000 ° 9.010 A 60.000 ° 9.010 A -60.000 ° 4.619 A -30.000 ° 4.619 A -150.000 ° 4.619 A 90.000 °
17 7.80 In 11.50 In 10.060 A -180.000 ° 10.060 A 60.000 ° 10.060 A -60.000 ° 3.884 A -30.000 ° 3.884 A -150.000 ° 3.884 A 90.000 °
18 4.10 In 8.30 In 7.261 A -180.000 ° 7.261 A 60.000 ° 7.261 A -60.000 ° 4.409 A -30.000 ° 4.409 A -150.000 ° 4.409 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.412 A -180.000 ° 3.412 A 60.000 ° 3.412 A -60.000 °
3.762 A -180.000 ° 3.762 A 60.000 ° 3.762 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.680 A Phase Secondary L1: -30.000 ° I Secondary L2: 1.680 A
3.674 A -30.000 ° 3.674 A
Page 5 of 70
Phase Secondary L2: -150.000 ° I Secondary L3: 1.680 A Phase Secondary L3: 90.000 °
-150.000 ° 3.674 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 6 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 7 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.31A
1.31A
1.32A
1.31A
Trip Time 2xIn
2.50sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
178msec
178m6sec
177msec
176sec
Page 8 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
275mA
274mA
275mA
Trip Time 2xIn
2.01sec
2.0sec
2.01sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
171msec
173msec
169msec
51N(DMT) Test repot:
Page 9 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-1
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Backup Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 450.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
. Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
450A 450A 450A
Ia:1A
4500A
Ib:1A
4500A
Ic:1A
4500A
Page 10 of 70
Differential Pickup: Side HV LV
R 349mA 311mA
Y 350mA 311mA
B 349mA 312mA
Y 777mA<240 933mA<30
B 777mA<120 933mA<270
RYB 232mA 281mA
Differential Stability: Side HV LV
R 777mA<0 933mA<150
Page 11 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 450.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4500.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
. Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0302 s N/T 0.0288 s N/T 0.0291 s N/T 0.0283 s N/T 0.0284 s N/T 0.0285 s 0.0289 s N/T N/T N/T 0.0281 s N/T 0.0277 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 12 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.011 A -180.000 ° 1.011 A 60.000 ° 1.011 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
2 0.40 In 0.70 In 0.544 A -180.000 ° 0.544 A 60.000 ° 0.544 A -60.000 ° 0.280 A -30.000 ° 0.280 A -150.000 ° 0.280 A 90.000 °
3 0.50 In 1.60 In 1.244 A -180.000 ° 1.244 A 60.000 ° 1.244 A -60.000 ° 1.026 A -30.000 ° 1.026 A -150.000 ° 1.026 A 90.000 °
4 0.60 In 1.40 In 1.089 A -180.000 ° 1.089 A 60.000 ° 1.089 A -60.000 ° 0.746 A -30.000 ° 0.746 A -150.000 ° 0.746 A 90.000 °
5 0.70 In 2.30 In 1.788 A -180.000 ° 1.788 A 60.000 ° 1.788 A -60.000 ° 1.493 A -30.000 ° 1.493 A -150.000 ° 1.493 A 90.000 °
6 0.80 In 2.20 In 1.711 A -180.000 ° 1.711 A 60.000 ° 1.711 A -60.000 ° 1.306 A -30.000 ° 1.306 A -150.000 ° 1.306 A 90.000 °
7 0.90 In 2.70 In 2.099 A -180.000 ° 2.099 A
8 1.00 In 2.60 In 2.022 A -180.000 ° 2.022 A
9 1.50 In 3.70 In 2.877 A -180.000 ° 2.877 A
10 1.50 In 3.30 In 2.566 A -180.000 ° 2.566 A
11 3.00 In 6.10 In 4.743 A -180.000 ° 4.743 A
12 3.00 In 5.00 In 3.888 A -180.000 ° 3.888 A
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2:
Page 13 of 70
Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
60.000 ° 2.099 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
60.000 ° 2.022 A -60.000 ° 1.493 A -30.000 ° 1.493 A -150.000 ° 1.493 A 90.000 °
60.000 ° 2.877 A -60.000 ° 2.053 A -30.000 ° 2.053 A -150.000 ° 2.053 A 90.000 °
60.000 ° 2.566 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
60.000 ° 4.743 A -60.000 ° 2.893 A -30.000 ° 2.893 A -150.000 ° 2.893 A 90.000 °
60.000 ° 3.888 A -60.000 ° 1.866 A -30.000 ° 1.866 A -150.000 ° 1.866 A 90.000 °
13 5.30 In 8.20 In 6.376 A -180.000 ° 6.376 A 60.000 ° 6.376 A -60.000 ° 2.706 A -30.000 ° 2.706 A -150.000 ° 2.706 A 90.000 °
14 2.70 In 9.30 In 7.231 A -180.000 ° 7.231 A 60.000 ° 7.231 A -60.000 ° 6.158 A -30.000 ° 6.158 A -150.000 ° 6.158 A 90.000 °
15 1.80 In 6.40 In 4.976 A -180.000 ° 4.976 A 60.000 ° 4.976 A -60.000 ° 4.292 A -30.000 ° 4.292 A -150.000 ° 4.292 A 90.000 °
16 5.90 In 10.30 In 8.009 A -180.000 ° 8.009 A 60.000 ° 8.009 A -60.000 ° 4.106 A -30.000 ° 4.106 A -150.000 ° 4.106 A 90.000 °
17 7.80 In 11.50 In 8.942 A -180.000 ° 8.942 A 60.000 ° 8.942 A -60.000 ° 3.452 A -30.000 ° 3.452 A -150.000 ° 3.452 A 90.000 °
18 4.10 In 8.30 In 6.454 A -180.000 ° 6.454 A 60.000 ° 6.454 A -60.000 ° 3.919 A -30.000 ° 3.919 A -150.000 ° 3.919 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.033 A -180.000 ° 3.033 A 60.000 ° 3.033 A -60.000 °
3.344 A -180.000 ° 3.344 A 60.000 ° 3.344 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.493 A Phase Secondary L1: -30.000 ° I Secondary L2: 1.493 A
3.266 A -30.000 ° 3.266 A
Page 14 of 70
Phase Secondary L2: -150.000 ° I Secondary L3: 1.493 A Phase Secondary L3: 90.000 °
-150.000 ° 3.266 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 15 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 16 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.31A
1.31A
1.32A
1.31A
Trip Time 2xIn
2.50sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
163msec
165m6sec
169msec
163msec
Page 17 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
274mA
274mA
275mA
Trip Time 2xIn
2.01sec
2.0sec
2.01sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
171msec
168msec
169msec
51N(DMT) Test repot:
Page 18 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-2
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Main Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 400.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
.
Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
400A 400A 400A
Ia:1A
4000A
Ib:1A
4000A
Ic:1A
4000A
VL1:63.5V
76.2KV
VL2:63.5V
76.2KV
VL3:63.5V
76.2KV
Page 19 of 70
Differential Pickup: Side HV LV
R 393mA 350mA
Y 394mA 351mA
B 394mA 349mA
Y 875mA<240 1.05A<30
B 875mA<120 1.05A<270
RYB 262mA 315mA
Differential Stability: Side HV LV
R 875mA<0 1.05A<150
REF Pickup: 131mA; Trip Time: 38ms
Page 20 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 400.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4000.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0341 s N/T 0.0332 s N/T 0.0329 s N/T 0.0322 s N/T 0.0321 s N/T 0.0317 s 0.0315 s N/T N/T N/T 0.0310 s N/T 0.0318 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 21 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.137 A -180.000 ° 1.137 A 60.000 ° 1.137 A -60.000 ° 0.945 A -30.000 ° 0.945 A -150.000 ° 0.945 A 90.000 °
2 0.40 In 0.70 In 0.612 A -180.000 ° 0.612 A 60.000 ° 0.612 A -60.000 ° 0.315 A -30.000 ° 0.315 A -150.000 ° 0.315 A 90.000 °
3 0.50 In 1.60 In 1.400 A -180.000 ° 1.400 A 60.000 ° 1.400 A -60.000 ° 1.155 A -30.000 ° 1.155 A -150.000 ° 1.155 A 90.000 °
4 0.60 In 1.40 In 1.225 A -180.000 ° 1.225 A 60.000 ° 1.225 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
5 0.70 In 2.30 In 2.012 A -180.000 ° 2.012 A 60.000 ° 2.012 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
6 0.80 In 2.20 In 1.925 A -180.000 ° 1.925 A 60.000 ° 1.925 A -60.000 ° 1.470 A -30.000 ° 1.470 A -150.000 ° 1.470 A 90.000 °
7 0.90 In 2.70 In 2.362 A -180.000 °
8 1.00 In 2.60 In 2.274 A -180.000 °
9 1.50 In 3.70 In 3.237 A -180.000 °
10 1.50 In 3.30 In 2.887 A -180.000 °
11 3.00 In 6.10 In 5.336 A -180.000 °
12 3.00 In 5.00 In 4.374 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 22 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
2.362 A 60.000 ° 2.362 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
2.274 A 60.000 ° 2.274 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
3.237 A 60.000 ° 3.237 A -60.000 ° 2.309 A -30.000 ° 2.309 A -150.000 ° 2.309 A 90.000 °
2.887 A 60.000 ° 2.887 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
5.336 A 60.000 ° 5.336 A -60.000 ° 3.254 A -30.000 ° 3.254 A -150.000 ° 3.254 A 90.000 °
4.374 A 60.000 ° 4.374 A -60.000 ° 2.099 A -30.000 ° 2.099 A -150.000 ° 2.099 A 90.000 °
13 5.30 In 8.20 In 7.173 A -180.000 ° 7.173 A 60.000 ° 7.173 A -60.000 ° 3.044 A -30.000 ° 3.044 A -150.000 ° 3.044 A 90.000 °
14 2.70 In 9.30 In 8.135 A -180.000 ° 8.135 A 60.000 ° 8.135 A -60.000 ° 6.928 A -30.000 ° 6.928 A -150.000 ° 6.928 A 90.000 °
15 1.80 In 6.40 In 5.599 A -180.000 ° 5.599 A 60.000 ° 5.599 A -60.000 ° 4.829 A -30.000 ° 4.829 A -150.000 ° 4.829 A 90.000 °
16 5.90 In 10.30 In 9.010 A -180.000 ° 9.010 A 60.000 ° 9.010 A -60.000 ° 4.619 A -30.000 ° 4.619 A -150.000 ° 4.619 A 90.000 °
17 7.80 In 11.50 In 10.060 A -180.000 ° 10.060 A 60.000 ° 10.060 A -60.000 ° 3.884 A -30.000 ° 3.884 A -150.000 ° 3.884 A 90.000 °
18 4.10 In 8.30 In 7.261 A -180.000 ° 7.261 A 60.000 ° 7.261 A -60.000 ° 4.409 A -30.000 ° 4.409 A -150.000 ° 4.409 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.412 A -180.000 ° 3.412 A 60.000 ° 3.412 A -60.000 °
3.762 A -180.000 ° 3.762 A 60.000 ° 3.762 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.680 A Phase Secondary L1: -30.000 °
3.674 A -30.000 °
Page 23 of 70
I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
1.680 A -150.000 ° 1.680 A 90.000 °
3.674 A -150.000 ° 3.674 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 24 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 25 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.32A
1.31A
1.31A
1.31A
Trip Time 2xIn
2.51sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
177msec
178m6sec
177msec
177sec
Page 26 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
275mA
274mA
274mA
Trip Time 2xIn
2.01sec
2.01sec
2.01sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
171msec
172msec
170msec
51N(DMT) Test repot:
Page 27 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-2
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Backup Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 450.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
. Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
450A 450A 450A
Ia:1A
4500A
Ib:1A
4500A
Ic:1A
4500A
Page 28 of 70
Differential Pickup: Side HV LV
R 349mA 311mA
Y 349mA 311mA
B 350mA 310mA
Y 777mA<240 933mA<30
B 777mA<120 933mA<270
RYB 233mA 282mA
Differential Stability: Side HV LV
R 777mA<0 933mA<150
Page 29 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 450.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4500.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0302 s N/T 0.0288 s N/T 0.0291 s N/T 0.0283 s N/T 0.0284 s N/T 0.0285 s 0.0289 s N/T N/T N/T 0.0281 s N/T 0.0277 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 30 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.011 A -180.000 ° 1.011 A 60.000 ° 1.011 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
2 0.40 In 0.70 In 0.544 A -180.000 ° 0.544 A 60.000 ° 0.544 A -60.000 ° 0.280 A -30.000 ° 0.280 A -150.000 ° 0.280 A 90.000 °
3 0.50 In 1.60 In 1.244 A -180.000 ° 1.244 A 60.000 ° 1.244 A -60.000 ° 1.026 A -30.000 ° 1.026 A -150.000 ° 1.026 A 90.000 °
4 0.60 In 1.40 In 1.089 A -180.000 ° 1.089 A 60.000 ° 1.089 A -60.000 ° 0.746 A -30.000 ° 0.746 A -150.000 ° 0.746 A 90.000 °
5 0.70 In 2.30 In 1.788 A -180.000 ° 1.788 A 60.000 ° 1.788 A -60.000 ° 1.493 A -30.000 ° 1.493 A -150.000 ° 1.493 A 90.000 °
6 0.80 In 2.20 In 1.711 A -180.000 ° 1.711 A 60.000 ° 1.711 A -60.000 ° 1.306 A -30.000 ° 1.306 A -150.000 ° 1.306 A 90.000 °
7 0.90 In 2.70 In 2.099 A -180.000 °
8 1.00 In 2.60 In 2.022 A -180.000 °
9 1.50 In 3.70 In 2.877 A -180.000 °
10 1.50 In 3.30 In 2.566 A -180.000 °
11 3.00 In 6.10 In 4.743 A -180.000 °
12 3.00 In 5.00 In 3.888 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 31 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
2.099 A 60.000 ° 2.099 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
2.022 A 60.000 ° 2.022 A -60.000 ° 1.493 A -30.000 ° 1.493 A -150.000 ° 1.493 A 90.000 °
2.877 A 60.000 ° 2.877 A -60.000 ° 2.053 A -30.000 ° 2.053 A -150.000 ° 2.053 A 90.000 °
2.566 A 60.000 ° 2.566 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
4.743 A 60.000 ° 4.743 A -60.000 ° 2.893 A -30.000 ° 2.893 A -150.000 ° 2.893 A 90.000 °
3.888 A 60.000 ° 3.888 A -60.000 ° 1.866 A -30.000 ° 1.866 A -150.000 ° 1.866 A 90.000 °
13 5.30 In 8.20 In 6.376 A -180.000 ° 6.376 A 60.000 ° 6.376 A -60.000 ° 2.706 A -30.000 ° 2.706 A -150.000 ° 2.706 A 90.000 °
14 2.70 In 9.30 In 7.231 A -180.000 ° 7.231 A 60.000 ° 7.231 A -60.000 ° 6.158 A -30.000 ° 6.158 A -150.000 ° 6.158 A 90.000 °
15 1.80 In 6.40 In 4.976 A -180.000 ° 4.976 A 60.000 ° 4.976 A -60.000 ° 4.292 A -30.000 ° 4.292 A -150.000 ° 4.292 A 90.000 °
16 5.90 In 10.30 In 8.009 A -180.000 ° 8.009 A 60.000 ° 8.009 A -60.000 ° 4.106 A -30.000 ° 4.106 A -150.000 ° 4.106 A 90.000 °
17 7.80 In 11.50 In 8.942 A -180.000 ° 8.942 A 60.000 ° 8.942 A -60.000 ° 3.452 A -30.000 ° 3.452 A -150.000 ° 3.452 A 90.000 °
18 4.10 In 8.30 In 6.454 A -180.000 ° 6.454 A 60.000 ° 6.454 A -60.000 ° 3.919 A -30.000 ° 3.919 A -150.000 ° 3.919 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.033 A -180.000 ° 3.033 A 60.000 ° 3.033 A -60.000 °
3.344 A -180.000 ° 3.344 A 60.000 ° 3.344 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.493 A Phase Secondary L1: -30.000 °
3.266 A -30.000 °
Page 32 of 70
I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
1.493 A -150.000 ° 1.493 A 90.000 °
3.266 A -150.000 ° 3.266 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 33 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 34 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.31A
1.30A
1.32A
1.30A
Trip Time 2xIn
2.50sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
168msec
171m6sec
171msec
168msec
Page 35 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
274mA
274mA
275mA
Trip Time 2xIn
2.01sec
2.0sec
2.01sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
168msec
171msec
169msec
51N(DMT) Test repot:
Page 36 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-3
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Main Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 400.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
.
Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
400A 400A 400A
Ia:1A
4000A
Ib:1A
4000A
Ic:1A
4000A
VL1:63.5V
76.2KV
VL2:63.5V
76.2KV
VL3:63.5V
76.2KV
Page 37 of 70
Differential Pickup: Side HV LV
R 393mA 351mA
Y 393mA 349mA
B 394mA 350mA
Y 875mA<240 1.05A<30
B 875mA<120 1.05A<270
RYB 261mA 315mA
Differential Stability: Side HV LV
R 875mA<0 1.05A<150
REF Pickup: 131mA; Trip Time: 41ms
Page 38 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 400.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4000.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0332 s N/T 0.0322 s N/T 0.0318 s N/T 0.0324 s N/T 0.0327 s N/T 0.0320 s 0.0303 s N/T N/T N/T 0.0314 s N/T 0.0318 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 39 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.137 A -180.000 ° 1.137 A 60.000 ° 1.137 A -60.000 ° 0.945 A -30.000 ° 0.945 A -150.000 ° 0.945 A 90.000 °
2 0.40 In 0.70 In 0.612 A -180.000 ° 0.612 A 60.000 ° 0.612 A -60.000 ° 0.315 A -30.000 ° 0.315 A -150.000 ° 0.315 A 90.000 °
3 0.50 In 1.60 In 1.400 A -180.000 ° 1.400 A 60.000 ° 1.400 A -60.000 ° 1.155 A -30.000 ° 1.155 A -150.000 ° 1.155 A 90.000 °
4 0.60 In 1.40 In 1.225 A -180.000 ° 1.225 A 60.000 ° 1.225 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
5 0.70 In 2.30 In 2.012 A -180.000 ° 2.012 A 60.000 ° 2.012 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
6 0.80 In 2.20 In 1.925 A -180.000 ° 1.925 A 60.000 ° 1.925 A -60.000 ° 1.470 A -30.000 ° 1.470 A -150.000 ° 1.470 A 90.000 °
7 0.90 In 2.70 In 2.362 A -180.000 °
8 1.00 In 2.60 In 2.274 A -180.000 °
9 1.50 In 3.70 In 3.237 A -180.000 °
10 1.50 In 3.30 In 2.887 A -180.000 °
11 3.00 In 6.10 In 5.336 A -180.000 °
12 3.00 In 5.00 In 4.374 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 40 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
2.362 A 60.000 ° 2.362 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
2.274 A 60.000 ° 2.274 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
3.237 A 60.000 ° 3.237 A -60.000 ° 2.309 A -30.000 ° 2.309 A -150.000 ° 2.309 A 90.000 °
2.887 A 60.000 ° 2.887 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
5.336 A 60.000 ° 5.336 A -60.000 ° 3.254 A -30.000 ° 3.254 A -150.000 ° 3.254 A 90.000 °
4.374 A 60.000 ° 4.374 A -60.000 ° 2.099 A -30.000 ° 2.099 A -150.000 ° 2.099 A 90.000 °
13 5.30 In 8.20 In 7.173 A -180.000 ° 7.173 A 60.000 ° 7.173 A -60.000 ° 3.044 A -30.000 ° 3.044 A -150.000 ° 3.044 A 90.000 °
14 2.70 In 9.30 In 8.135 A -180.000 ° 8.135 A 60.000 ° 8.135 A -60.000 ° 6.928 A -30.000 ° 6.928 A -150.000 ° 6.928 A 90.000 °
15 1.80 In 6.40 In 5.599 A -180.000 ° 5.599 A 60.000 ° 5.599 A -60.000 ° 4.829 A -30.000 ° 4.829 A -150.000 ° 4.829 A 90.000 °
16 5.90 In 10.30 In 9.010 A -180.000 ° 9.010 A 60.000 ° 9.010 A -60.000 ° 4.619 A -30.000 ° 4.619 A -150.000 ° 4.619 A 90.000 °
17 7.80 In 11.50 In 10.060 A -180.000 ° 10.060 A 60.000 ° 10.060 A -60.000 ° 3.884 A -30.000 ° 3.884 A -150.000 ° 3.884 A 90.000 °
18 4.10 In 8.30 In 7.261 A -180.000 ° 7.261 A 60.000 ° 7.261 A -60.000 ° 4.409 A -30.000 ° 4.409 A -150.000 ° 4.409 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.412 A -180.000 ° 3.412 A 60.000 ° 3.412 A -60.000 °
3.762 A -180.000 ° 3.762 A 60.000 ° 3.762 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.680 A Phase Secondary L1: -30.000 °
3.674 A -30.000 °
Page 41 of 70
I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
1.680 A -150.000 ° 1.680 A 90.000 °
3.674 A -150.000 ° 3.674 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 42 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 43 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.31A
1.31A
1.32A
1.31A
Trip Time 2xIn
2.50sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
178msec
179m6sec
177msec
176sec
Page 44 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
275mA
274mA
275mA
Trip Time 2xIn
2.01sec
2.0sec
2.01sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
171msec
173msec
169msec
51N(DMT) Test repot:
Page 45 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-3
Bay address:
.
.
.
Device: Name/description: Device type:
GE345 Manufacturer: Transformer differential protection Device address:
GE Backup Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 450.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
.
Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
450A 450A 450A
Ia:1A
4500A
Ib:1A
4500A
Ic:1A
4500A
Page 46 of 70
Differential Pickup: Side HV LV
R 436mA 302mA
Y 436mA 301mA
B 435mA 301mA
Y 777mA<240 933mA<30
B 777mA<120 933mA<270
RYB 250mA 300mA
Differential Stability: Side HV LV
R 777mA<0 933mA<150
Page 47 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 450.00 A 1.00 A tow. Prot. Obj. 200.00 A 1.00 A n/a
Secondary 4500.00 A 1.00 A tow. Prot. Obj. 800.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.20 In 0.50 In 0.20 In 1.10 In 2.00 In 3.60 In 3.20 In 1.80 In 4.30 In 5.70 In 4.40 In 1.40 In 3.60 In 0.50 In 5.30 In 6.60 In
0.20 In 0.50 In 1.30 In 1.30 In 1.70 In 2.90 In 3.50 In 3.70 In 2.20 In 4.60 In 6.00 In 4.10 In 4.30 In 5.40 In 1.90 In 5.00 In 6.30 In
Nominal Trip Time 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T N/T 0.0300 s N/T N/T N/T 0.0300 s 0.0300 s
Actual Trip Time 0.0361 s N/T 0.0352 s N/T 0.0352 s N/T 0.0343 s N/T 0.0336 s N/T N/T 0.0334 s N/T N/T N/T 0.0333 s 0.0341 s
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 48 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 0.20 In 0.200 A -180.000 ° 0.200 A 60.000 ° 0.200 A -60.000 ° 0.240 A 150.000 ° 0.240 A 30.000 ° 0.240 A -90.000 °
2 0.20 In 0.50 In 0.500 A -180.000 ° 0.500 A 60.000 ° 0.500 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
3 0.50 In 1.30 In 1.300 A -180.000 ° 1.300 A 60.000 ° 1.300 A -60.000 ° 0.960 A -30.000 ° 0.960 A -150.000 ° 0.960 A 90.000 °
4 0.20 In 1.30 In 1.300 A -180.000 ° 1.300 A 60.000 ° 1.300 A -60.000 ° 1.320 A -30.000 ° 1.320 A -150.000 ° 1.320 A 90.000 °
5 1.10 In 1.70 In 1.700 A -180.000 ° 1.700 A 60.000 ° 1.700 A -60.000 ° 0.720 A -30.000 ° 0.720 A -150.000 ° 0.720 A 90.000 °
6 2.00 In 2.90 In 2.900 A -180.000 ° 2.900 A 60.000 ° 2.900 A -60.000 ° 1.080 A -30.000 ° 1.080 A -150.000 ° 1.080 A 90.000 °
7 3.60 In 3.50 In 3.500 A -180.000 °
8 3.20 In 3.70 In 3.700 A -180.000 °
9 1.80 In 2.20 In 2.200 A -180.000 °
10 4.30 In 4.60 In 4.600 A -180.000 °
11 5.70 In 6.00 In 6.000 A -180.000 °
12 4.40 In 4.10 In 4.100 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 49 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
3.500 A 60.000 ° 3.500 A -60.000 ° 0.120 A 150.000 ° 0.120 A 30.000 ° 0.120 A -90.000 °
3.700 A 60.000 ° 3.700 A -60.000 ° 0.600 A -30.000 ° 0.600 A -150.000 ° 0.600 A 90.000 °
2.200 A 60.000 ° 2.200 A -60.000 ° 0.480 A -30.000 ° 0.480 A -150.000 ° 0.480 A 90.000 °
4.600 A 60.000 ° 4.600 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
6.000 A 60.000 ° 6.000 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
Shot
13
14
15
16
17
Idiff: Ibias:
1.40 In 4.30 In
3.60 In 5.40 In
0.50 In 1.90 In
5.30 In 5.00 In
6.60 In 6.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
4.300 A -180.000 ° 4.300 A 60.000 ° 4.300 A -60.000 °
5.400 A -180.000 ° 5.400 A 60.000 ° 5.400 A -60.000 °
1.900 A -180.000 ° 1.900 A 60.000 ° 1.900 A -60.000 °
5.000 A -180.000 ° 5.000 A 60.000 ° 5.000 A -60.000 °
6.300 A -180.000 ° 6.300 A 60.000 ° 6.300 A -60.000 °
I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
3.480 A -30.000 ° 3.480 A -150.000 ° 3.480 A 90.000 °
2.160 A -30.000 ° 2.160 A -150.000 ° 2.160 A 90.000 °
1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
4.100 A 60.000 ° 4.100 A -60.000 ° 0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed 17 out of 17 points tested. 17 points passed. 0 points failed.
Page 50 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.10 I/In 1.00 I/In 2.90 I/In 3.00 I/In 5.00 I/In 5.00 I/In
14.30 % 15.40 % 15.40 % 14.50 % 15.40 % 14.50 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
Yes No No Yes No Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 51 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.31A
1.31A
1.30A
1.30A
Trip Time 2xIn
2.50sec
2.51sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
168msec
169m6sec
171msec
168msec
Page 52 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
250mA
249mA
249mA
Trip Time 2xIn
2.03sec
2.03sec
2.04sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
173msec
176msec
174msec
51N(DMT) Test repot:
Page 53 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-4
Bay address:
.
.
.
Device: Name/description: Device type:
7UT85 Manufacturer: Transformer differential protection Device address:
Siemens Main Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 400.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
.
.
.
Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
400A 400A 400A
Ia:1A
4000A
Ib:1A
4000A
Ic:1A
4000A
VL1:63.5V
76.2KV
VL2:63.5V
76.2KV
VL3:63.5V
76.2KV
Page 54 of 70
Differential Pickup: Side HV LV
R 394mA 350mA
Y 393mA 351mA
B 394mA 349mA
Y 875mA<240 1.05A<30
B 875mA<120 1.05A<270
RYB 263mA 314mA
Differential Stability: Side HV LV
R 875mA<0 1.05A<150
REF Pickup: 131mA; Trip Time: 40ms
Page 55 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 400.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
Secondary 4000.00 A 1.00 A tow. Prot. Obj. 1000.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
. Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.40 In 0.50 In 0.60 In 0.70 In 0.80 In 0.90 In 1.00 In 1.50 In 1.50 In 3.00 In 3.00 In 5.30 In 2.70 In 1.80 In 5.90 In 7.80 In 4.10 In 2.30 In 0.80 In
1.30 In 0.70 In 1.60 In 1.40 In 2.30 In 2.20 In 2.70 In 2.60 In 3.70 In 3.30 In 6.10 In 5.00 In 8.20 In 9.30 In 6.40 In 10.30 In 11.50 In 8.30 In 3.90 In 4.30 In
Nominal Trip Time N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s N/T 0.0280 s 0.0280 s N/T N/T N/T 0.0280 s N/T 0.0280 s N/T
Actual Trip Time N/T 0.0327 s N/T 0.0328 s N/T 0.0319 s N/T 0.0316 s N/T 0.0331 s N/T 0.0326 s 0.0318 s N/T N/T N/T 0.0318 s N/T 0.0315 s N/T
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 56 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 1.30 In 1.137 A -180.000 ° 1.137 A 60.000 ° 1.137 A -60.000 ° 0.945 A -30.000 ° 0.945 A -150.000 ° 0.945 A 90.000 °
2 0.40 In 0.70 In 0.612 A -180.000 ° 0.612 A 60.000 ° 0.612 A -60.000 ° 0.315 A -30.000 ° 0.315 A -150.000 ° 0.315 A 90.000 °
3 0.50 In 1.60 In 1.400 A -180.000 ° 1.400 A 60.000 ° 1.400 A -60.000 ° 1.155 A -30.000 ° 1.155 A -150.000 ° 1.155 A 90.000 °
4 0.60 In 1.40 In 1.225 A -180.000 ° 1.225 A 60.000 ° 1.225 A -60.000 ° 0.840 A -30.000 ° 0.840 A -150.000 ° 0.840 A 90.000 °
5 0.70 In 2.30 In 2.012 A -180.000 ° 2.012 A 60.000 ° 2.012 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
6 0.80 In 2.20 In 1.925 A -180.000 ° 1.925 A 60.000 ° 1.925 A -60.000 ° 1.470 A -30.000 ° 1.470 A -150.000 ° 1.470 A 90.000 °
7 0.90 In 2.70 In 2.362 A -180.000 °
8 1.00 In 2.60 In 2.274 A -180.000 °
9 1.50 In 3.70 In 3.237 A -180.000 °
10 1.50 In 3.30 In 2.887 A -180.000 °
11 3.00 In 6.10 In 5.336 A -180.000 °
12 3.00 In 5.00 In 4.374 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 57 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
2.362 A 60.000 ° 2.362 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
2.274 A 60.000 ° 2.274 A -60.000 ° 1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
3.237 A 60.000 ° 3.237 A -60.000 ° 2.309 A -30.000 ° 2.309 A -150.000 ° 2.309 A 90.000 °
2.887 A 60.000 ° 2.887 A -60.000 ° 1.890 A -30.000 ° 1.890 A -150.000 ° 1.890 A 90.000 °
5.336 A 60.000 ° 5.336 A -60.000 ° 3.254 A -30.000 ° 3.254 A -150.000 ° 3.254 A 90.000 °
4.374 A 60.000 ° 4.374 A -60.000 ° 2.099 A -30.000 ° 2.099 A -150.000 ° 2.099 A 90.000 °
13 5.30 In 8.20 In 7.173 A -180.000 ° 7.173 A 60.000 ° 7.173 A -60.000 ° 3.044 A -30.000 ° 3.044 A -150.000 ° 3.044 A 90.000 °
14 2.70 In 9.30 In 8.135 A -180.000 ° 8.135 A 60.000 ° 8.135 A -60.000 ° 6.928 A -30.000 ° 6.928 A -150.000 ° 6.928 A 90.000 °
15 1.80 In 6.40 In 5.599 A -180.000 ° 5.599 A 60.000 ° 5.599 A -60.000 ° 4.829 A -30.000 ° 4.829 A -150.000 ° 4.829 A 90.000 °
16 5.90 In 10.30 In 9.010 A -180.000 ° 9.010 A 60.000 ° 9.010 A -60.000 ° 4.619 A -30.000 ° 4.619 A -150.000 ° 4.619 A 90.000 °
17 7.80 In 11.50 In 10.060 A -180.000 ° 10.060 A 60.000 ° 10.060 A -60.000 ° 3.884 A -30.000 ° 3.884 A -150.000 ° 3.884 A 90.000 °
18 4.10 In 8.30 In 7.261 A -180.000 ° 7.261 A 60.000 ° 7.261 A -60.000 ° 4.409 A -30.000 ° 4.409 A -150.000 ° 4.409 A 90.000 °
Shot
19
20
Idiff: Ibias:
2.30 In 3.90 In
0.80 In 4.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
3.412 A -180.000 ° 3.412 A 60.000 ° 3.412 A -60.000 °
3.762 A -180.000 ° 3.762 A 60.000 ° 3.762 A -60.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Secondary L1: 1.680 A Phase Secondary L1: -30.000 °
3.674 A -30.000 °
Page 58 of 70
I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
1.680 A -150.000 ° 1.680 A 90.000 °
3.674 A -150.000 ° 3.674 A 90.000 °
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed
20 out of 20 points tested. 20 points passed. 0 points failed.
Page 59 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
1.00 I/In 3.90 I/In 5.90 I/In 1.00 I/In 3.90 I/In 6.00 I/In
16.00 % 16.00 % 16.00 % 14.70 % 14.60 % 14.60 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No No Yes Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 60 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.32A
1.31A
1.32A
1.31A
Trip Time 2xIn
2.51sec
2.50sec
2.50sec
2.50sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
179msec
180m6sec
176msec
176sec
Page 61 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
275mA
274mA
275mA
Trip Time 2xIn
2.01sec
2.0sec
2.02sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
171msec
168msec
174msec
51N(DMT) Test repot:
Page 62 of 70
.
.
Test Object - Device Settings .
.
. Desh Energy 200MW Power Plant Chandpur
Substation/Bay: Substation:
Desh Energy 132KV SS
Substation address:
Bay:
Transformer-4
Bay address:
.
.
.
Device: Name/description: Device type:
GE345 Manufacturer: Transformer differential protection Device address:
GE Backup Relay
50.00 Hz 110.0 V 1.000 A
Number of phases: V primary: I primary:
3 132.0 kV 450.0 A
.
.
Nominal Values: f nom: V nom (secondary): I nom (secondary):
. Measurement Test : Injected Current
Measured Current
IA: 1A IB: 1A IC: 1A
450A 450A 450A
Ia:1A
4500A
Ib:1A
4500A
Ic:1A
4500A
Page 63 of 70
Differential Pickup: Side HV LV
R 436mA 305mA
Y 435mA 305mA
B 436mA 305mA
Y 777mA<240 933mA<30
B 777mA<120 933mA<270
RYB 250mA 300mA
Differential Stability: Side HV LV
R 777mA<0 933mA<150
Page 64 of 70
Diff Operating Characteristic: Test Object - Differential Parameters Protected Object: Protected Object: Vector Group:
Transformer YD1
Winding/Leg Name: Voltage: Power: Starpoint Grounding: Delta-connected CT:
Primary 132.00 kV 80.00 MVA Yes No
Secondary 11.00 kV 80.00 MVA No No
Primary 450.00 A 1.00 A tow. Prot. Obj. 200.00 A 1.00 A n/a
Secondary 4500.00 A 1.00 A tow. Prot. Obj. 800.00 A 1.00 A n/a
CT: Winding/Leg Name: CT Current Prim: CT Current Sec: CT Grounding: Gnd CT Prim Current: Gnd CT Sec Current: Gnd CT Grounding:
.
Test Results for Fault Type L1-L2-L3 at Reference Side Primary Idiff
Ibias
0.40 In 0.20 In 0.50 In 0.20 In 1.10 In 2.00 In 3.60 In 3.20 In 1.80 In 4.30 In 5.70 In 4.40 In 1.40 In 3.60 In 0.50 In 5.30 In 6.60 In
0.20 In 0.50 In 1.30 In 1.30 In 1.70 In 2.90 In 3.50 In 3.70 In 2.20 In 4.60 In 6.00 In 4.10 In 4.30 In 5.40 In 1.90 In 5.00 In 6.30 In
Nominal Trip Time 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T 0.0300 s N/T N/T 0.0300 s N/T N/T N/T 0.0300 s 0.0300 s
Actual Trip Time 0.0342 s N/T 0.0338 s N/T 0.0356 s N/T 0.0367 s N/T 0.0378 s N/T N/T 0.0360 s N/T N/T N/T 0.0385 s 0.0383 s
State
Result
Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed Passed
Page 65 of 70
Shot Idiff: Ibias: I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
1 0.40 In 0.20 In 0.200 A -180.000 ° 0.200 A 60.000 ° 0.200 A -60.000 ° 0.240 A 150.000 ° 0.240 A 30.000 ° 0.240 A -90.000 °
2 0.20 In 0.50 In 0.500 A -180.000 ° 0.500 A 60.000 ° 0.500 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
3 0.50 In 1.30 In 1.300 A -180.000 ° 1.300 A 60.000 ° 1.300 A -60.000 ° 0.960 A -30.000 ° 0.960 A -150.000 ° 0.960 A 90.000 °
4 0.20 In 1.30 In 1.300 A -180.000 ° 1.300 A 60.000 ° 1.300 A -60.000 ° 1.320 A -30.000 ° 1.320 A -150.000 ° 1.320 A 90.000 °
5 1.10 In 1.70 In 1.700 A -180.000 ° 1.700 A 60.000 ° 1.700 A -60.000 ° 0.720 A -30.000 ° 0.720 A -150.000 ° 0.720 A 90.000 °
6 2.00 In 2.90 In 2.900 A -180.000 ° 2.900 A 60.000 ° 2.900 A -60.000 ° 1.080 A -30.000 ° 1.080 A -150.000 ° 1.080 A 90.000 °
7 3.60 In 3.50 In 3.500 A -180.000 °
8 3.20 In 3.70 In 3.700 A -180.000 °
9 1.80 In 2.20 In 2.200 A -180.000 °
10 4.30 In 4.60 In 4.600 A -180.000 °
11 5.70 In 6.00 In 6.000 A -180.000 °
12 4.40 In 4.10 In 4.100 A -180.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3: Shot Idiff: Ibias: I Primary L1: Phase Primary L1:
Page 66 of 70
I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3: I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3: I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3:
3.500 A 60.000 ° 3.500 A -60.000 ° 0.120 A 150.000 ° 0.120 A 30.000 ° 0.120 A -90.000 °
3.700 A 60.000 ° 3.700 A -60.000 ° 0.600 A -30.000 ° 0.600 A -150.000 ° 0.600 A 90.000 °
2.200 A 60.000 ° 2.200 A -60.000 ° 0.480 A -30.000 ° 0.480 A -150.000 ° 0.480 A 90.000 °
4.600 A 60.000 ° 4.600 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
6.000 A 60.000 ° 6.000 A -60.000 ° 0.360 A -30.000 ° 0.360 A -150.000 ° 0.360 A 90.000 °
Shot
13
14
15
16
17
Idiff: Ibias:
1.40 In 4.30 In
3.60 In 5.40 In
0.50 In 1.90 In
5.30 In 5.00 In
6.60 In 6.30 In
I Primary L1: Phase Primary L1: I Primary L2: Phase Primary L2: I Primary L3: Phase Primary L3:
4.300 A -180.000 ° 4.300 A 60.000 ° 4.300 A -60.000 °
5.400 A -180.000 ° 5.400 A 60.000 ° 5.400 A -60.000 °
1.900 A -180.000 ° 1.900 A 60.000 ° 1.900 A -60.000 °
5.000 A -180.000 ° 5.000 A 60.000 ° 5.000 A -60.000 °
6.300 A -180.000 ° 6.300 A 60.000 ° 6.300 A -60.000 °
I Secondary L1: Phase Secondary L1: I Secondary L2: Phase Secondary L2: I Secondary L3: Phase Secondary L3:
3.480 A -30.000 ° 3.480 A -150.000 ° 3.480 A 90.000 °
2.160 A -30.000 ° 2.160 A -150.000 ° 2.160 A 90.000 °
1.680 A -30.000 ° 1.680 A -150.000 ° 1.680 A 90.000 °
0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
4.100 A 60.000 ° 4.100 A -60.000 ° 0.360 A 150.000 ° 0.360 A 30.000 ° 0.360 A -90.000 °
V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
I Tertiary L1: Phase Tertiary L1: I Tertiary L2: Phase Tertiary L2: I Tertiary L3: Phase Tertiary L3: V L1: Phase L1: V L2: Phase L2: V L3: Phase L3:
. . Test State: Test passed 17 out of 17 points tested. 17 points passed. 0 points failed.
Page 67 of 70
Diff Harmonic Restraint: Test Results for Testphase L1-L2-L3 at Reference Side Primary for 2. Harmonic Idiff
Ixf/Idiff
3.00 I/In 5.00 I/In 4.90 I/In 0.70 I/In 3.30 I/In 0.90 I/In
15.60 % 15.70 % 14.50 % 15.50 % 14.30 % 14.30 %
Angle (Ixf,Idiff) -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 ° -120.0 °
Trip
State
Result
No No Yes No Yes Yes
Tested Tested Tested Tested Tested Tested
Passed Passed Passed Passed Passed Passed
. State: 6 out of 6 points tested. 6 points passed. 0 points failed. General Assessment: Test passed
Page 68 of 70
Over Current Protection Test (51) :
51 Setting Current
1.2A
TMS
0.25
Characteristic Curve
IDMT
51 Setting Current
6A
Trip Time
0.15sec
Characteristic Curve
DMT
Relay Setting
51(IDMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
1.29A
1.31A
1.28A
1.28A
Trip Time 2xIn
2.51sec
2.53sec
2.51sec
2.51sec
51(DMT) Test repot: Pickup
R
Y
B
RYB
Amplitude
6A
6A
6A
6A
Trip Time
173msec
168m6sec
171msec
168msec
Page 69 of 70
Earth Fault Protection Test (51N) :
51N Setting Current
0.25 A
TMS
0.2
Characteristic Curve
IDMT
51N Setting Current
1.2A
Trip Time
150msec
Characteristic Curve
DMT
Relay Setting
51N(IDMT) Test repot: Pickup
R
Y
B
Amplitude
251mA
250mA
249mA
Trip Time 2xIn
2.03sec
2.05sec
2.02sec
Pickup
R
Y
B
Amplitude
1.2A
1.2A
1.2A
Trip Time
175msec
172msec
173msec
51N(DMT) Test repot:
Page 70 of 70
More Documents from "ashish saha"
Alarm-annunciator.pdf
June 2020 12
Trafo.pdf
June 2020 9
Aluminium Usage.docx
October 2019 57