Transforemer Stability Test Report

SITE TEST REPORT

Replacement of 132/11kV Transformers, Transformer Protection Panels and 110 V Batteries at W13 Substation (CONTRACT No. N6399) Consultant

Name of the Equipment Name of the Feeder Manufacturer Date

ENERGO

Main Contractor

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013

Page 1 – 10

40 MVA Power Transformer Stability Test 1. TRANSFORMER DETAILS: MAKE

: ABB

SERIAL NO.

:4359245110

FREQUENCY

: 50Hz

TYPE OF COOLING

: ONAN/ONAF

VECTOR GROUP

: YN yn0+d11

NO OF TAPS

: 25

NOMINAL TAP

: 13

Feeder name- Bay- E03 at 132kV side and Bay K09 at 11kV side RATING WINDING

RATED POWER(MVA)

RATED VOLTAGE

RATED CURRENTS

ONAN/ONAF

(KV)

(A)

HV

31.5/40

132

137.8/175.0

MV

31.5/40

11.5

1581/2008

SW

10.5/13.3

8

757.7/962

IMPEDANCE VOLTAGE

IMPEDANCE

WINDING

POWER

HV VOLTAGES(KV)

%

HV-LV

AT 40MVA

Tap1—151.8

19.51

Tap13---132.0

17.69

Tap25---112.2

16.28

VOLTAGE

The CT T1 used For Differential protection (F87T) CT ratio for 132kV Line side CT’s = 300/1A

Relay- RET670- ABB

CT ratio for 11kV Line side CT’s = 2500/1A The CT T3 used For REF protection at HV side (F64HV)

Date Name Signature

Tested by ABB Transmission & Distribution

Witnessed by

ENERGO

20.02.2013 R.Krishna Murthy

20.02.2013 Mohammad Rasheed

Approved by

SITE TEST REPORT

Replacement of 132/11kV Transformers, Transformer Protection Panels and 110 V Batteries at W13 Substation (CONTRACT No. N6399) Consultant

ENERGO

Main Contractor

Name of the Equipment Name of the Feeder Manufacturer Date

CT ratio for 132kV Line side CT’s = 300/1A

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013

Page 2 – 10

Relay- RET615- ABB

CT ratio for HV neutral side= 300/1A The CT5 used For REF protection at MV side (F64MV) CT ratio for 11kV Line side CT’s = 2500/1A

Relay- RET615- ABB

CT ratio for MV neutral side= 2500/1A The CT1 used For SBEF protection at HV Neutral side (F51NHV ) CT ratio for HV neutral side= 300/1A

Relay- REF615- ABB

The CT4 used For SBEF protection at MV neutral side (F51NMV) CT ratio for MV neutral side= 2500/1A

Relay- REF615- ABB

The CT9 used For SBEF protection at tertiary side (F51NT) CT ratio for Tertiary neutral side= 300/1A

Relay- REF615- ABB

The CT T1 used For O/C & E/F protection at HV Line side (F51/51NHV) CT ratio for 132kV Line side CT’s = 300/1A

Relay- REF615- ABB

Relay used for Over Voltage protection (F59) VT Ratio 11kV/√3/110V/√3

Relay- REF615- ABB

A. Transformer Stability Test( RET 670) 1a) STABLE CONDITION (132kV BB2 Earth Q25 Closed) Three phase voltage injected in 11kV side thru Bay K09(I/C-1), K11 and all CTs are normal

Date Name Signature

Tested by ABB Transmission & Distribution

Witnessed by

ENERGO

20.02.2013 R.Krishna Murthy

20.02.2013 Mohammad Rasheed

Approved by

SITE TEST REPORT

Replacement of 132/11kV Transformers, Transformer Protection Panels and 110 V Batteries at W13 Substation (CONTRACT No. N6399) Consultant

ENERGO

Main Contractor

PHASE

Name of the Equipment Name of the Feeder Manufacturer Date

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013

Page 3 – 10

Primary

Relay Display

Diff. Display

CT Terminals Sec

current (A)

Measurement (A)

Measurement (A)

Current (A)

132kV

11kV

132kV

11kV

Diff.

Rest

132kV

11kV

R

111

151

34.17

392

0

34.32

0.103

0.186

Y

112

150

34.55

392

0

0.107

0.192

B

109

151

33.98

387

0

0.104

0.187

N 1b) UNSTABLE CONDITION (132kV side CT Bypassed by closing the Earth switch Q8 ) a)Three phase voltage injected in 11kV side thru Bay K09(I/C-1)**and all CT’s are Normal PHASE

Primary

Relay Display

Diff. Display

CT Terminals Sec

current (A)

Measurement (A)

Measurement (A)

Current (mA)

132kV

11kV

132kV

11kV

Diff.

Rest

132kV

11kV

R

10

150

3.2

393

31.20

34

9.6

153

Y

8

152

3.1

390

31.8

9.2

152

B

10

151

3.0

385

31.2

9.0

149

1.6

5.1

N 1c) STABLE CONDITION (132kV BB2 Earth Q25 Closed)

Three phase voltage injected in 11kV side thru Bay K09(I/C-1)** and all CTs are normal PHASE

Primary

Test Plug (A)

current (A)

Diff. Display

Relay Display (A)

Measurement (A)

132kV

11kV

132kV

11kV

Diff.

Rest

132kV

11kV

R

111

152

110

151

0

34.2

34.2

193

Y

111

150

111

153

0

34.2

389

B

110

151

110

151

0

33.0

388

N

-

-

-

-

-

-

-

REMARKS:

-

40 MVA Transformer diff Stability circuit found :- OK

B. 40 MVA TRANSFORMER HV REF PROTECTION STABILITY / SENSITIVITY TEST Phase CT Ratio

Date Name Signature

: 300/1 A Tested by ABB Transmission & Distribution

Witnessed by

ENERGO

20.02.2013 R.Krishna Murthy

20.02.2013 Mohammad Rasheed

Approved by

SITE TEST REPORT

Replacement of 132/11kV Transformers, Transformer Protection Panels and 110 V Batteries at W13 Substation (CONTRACT No. N6399) Consultant

Name of the Equipment Name of the Feeder Manufacturer Date

ENERGO

Main Contractor

Neutral CT Ratio

: 300/1 A

Relay Setting (Is)

:.

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013

Page 4 – 10

A

Stabilizing resistor (final setting)

:_

Stabilizing resistor set at

:

Transformer Tap position

: 13

Primary current measured

:

Ohm Ohm A

(132kV Earth switch Q25 (BB2 ESW) Close (BUSBAR -2 under Shutdown)

B1. HV REF STABILITY (Relay Type- RET615-ABB) Stable Condition (All CT’s are Normal) Descript

Measured Current at

HV

ion

Protection Panel E03+R (mA) R

XA:21

Y

B

XA:22

XA:23

N

XA:24

Voltage Measured Across

Current

F64HV

Resis.

REF

RET615

Relay

Current

NCT

F64HV

Display

(mA)

(mA)

13&14

(A)

XA:

Relay

Metrosil

Stabilize

11&12

RET615

RMHV

Resistor

F64HV

(mV)

RSHV

(V) R Ph &

100

31.0

29.0

Neut.

37.5/

(mA)

(mV)

0

0

0

0

0

0

0

39.2/

0

47.8

47.3

0

0

0

0

43

44.2

0

0

0

0

18.9

18.9

0

0

0

37.2

Normal Y Ph &

31.2

104.1

31.2

28.8

Neut.

40.0

Normal B Ph &

30.2

31.1

99.1

37.2

Neut.

37.6/ 37.7

Normal RYB

110

102

109

0

0

B2. HV REF Sensitivity Test (Neutral side CT reversed)

Date Name Signature

Tested by ABB Transmission & Distribution

Witnessed by

ENERGO

20.02.2013 R.Krishna Murthy

20.02.2013 Mohammad Rasheed

Approved by

SITE TEST REPORT

Replacement of 132/11kV Transformers, Transformer Protection Panels and 110 V Batteries at W13 Substation (CONTRACT No. N6399) Consultant

Name of the Equipment Name of the Feeder Manufacturer Date

ENERGO

Main Contractor

Descript

Measured Current at

HV

ion

Protection Panel E03+R (mA) R

XA:21

Y

B

XA:22

XA:23

N

XA:24

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013

Voltage Measured Across

Current

F64HV

Resis.

REF

RET615

Relay

Current

NCT

F64HV

Display

(mA)

(mA)

13&14

(A)

XA:

Relay

Metrosil

Stabilize

11&12

RET615

RMHV

Resistor

F64HV

(V)

RSHV

(V) R ph

93.7

38.4

37.9

18.9

Normal Y ph

29.9/

(mA)

(V)

0

30.2

30.1

48.2

15.0

48.1

0

32.5

32.5

51.3

16.2

51.9

0

30.3

30.3

48.4

14.9

48.4

Current

F64HV

Resis.

29.6 37.7

96.7

38.9

20.5

Normal B ph

Page 5 – 10

31.8/ 31.8

37.8

37.9

92.5

19

Normal

28.7/ 29.6

B3. HV REF Stable condition Descript

Measured Current at

HV

ion

Protection Panel E03+R (mA)

REF

RET615

Relay

Current

NCT

F64HV

Display

(mA)

(mA)

13&14

(A)

R

XA:21

Y

B

XA:22

XA:23

N

XA:24

Voltage Measured Across

XA:

Relay

Metrosil

Stabilize

11&12

RET615

RMHV

Resistor

F64HV

(mV)

RSHV

(V) R Ph &

100

31.4

31.3

37.8

Neut.

37.6/

(mA)

(mV)

0

19

90

0

0

0

0

44

44

0

0

0

37.5

Normal Y Ph &

31.2

104.3

31.2

39.8

Neut.

40.1/ 40.1

Normal

Date Name Signature

Tested by ABB Transmission & Distribution

Witnessed by

ENERGO

20.02.2013 R.Krishna Murthy

20.02.2013 Mohammad Rasheed

Approved by

SITE TEST REPORT

Replacement of 132/11kV Transformers, Transformer Protection Panels and 110 V Batteries at W13 Substation (CONTRACT No. N6399) Consultant

Name of the Equipment Name of the Feeder Manufacturer Date

ENERGO

Main Contractor

B Ph &

30.7

30.5

100.2

36.9

37.3 /

Neut.

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013

0

42.5

42.5

Page 6 – 10

0

0

0

37.6

Normal REMARKS:

40MVA Transformer HV REF circuit found -:- OK

C. 40 MVA TRANSFORMER MV REF PROTECTION STABILITY / SENSITIVITY TEST Phase CT Ratio

: 2500/1 A

Neutral CT Ratio

: 2500/1 A

Relay Setting (Is)

:

A

Stabilizing resistor (final setting)

:_

Stabilizing resistor set at

:

Transformer Tap position

: 13

Primary current measured

:

Ohm Ohm A

(132kV Earth switch Q25 (BB2 ESW) Close (BUSBAR -2 under Shutdown)

C1. MV REF STABILITY (Relay Type- RET615-ABB) Descript

Measured Current at

MV REF

ion

Protection Panel E03+R (mA)

Voltage Measured Across

Current

F64MV

Resis.

NCT

RET615

Relay

Current

F64MV

Display

(A)

(A)

R

Y

B

N

(mA)

XA:14

XA:15

XA:16

XA:17

XA:

Relay

Metrosil

Stabilize

13&14

18&19

RET615

RMMV

Resistor

(mA)

F64MV

(mV)

RSMV

(mV) R Ph &

183

0

0

183.5

Neut.

183/

(mV)

0

35.5

0

0

0

0

0

105

105

0

0

0

0

23

22

0

0

0

181.7

Normal Y Ph &

0

187

0

187

Neut.

187.9/ 187.8

Normal B Ph &

Date Name Signature

0

0

181

179.8

178.9 /

Tested by ABB Transmission & Distribution

Witnessed by

ENERGO

20.02.2013 R.Krishna Murthy

20.02.2013 Mohammad Rasheed

Approved by

SITE TEST REPORT

Replacement of 132/11kV Transformers, Transformer Protection Panels and 110 V Batteries at W13 Substation (CONTRACT No. N6399) Consultant

ENERGO

Main Contractor

Name of the Equipment Name of the Feeder Manufacturer Date

Neut.

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013

Page 7 – 10

178.2

Normal RYB

152

152

149

0

0

0

24.5

25.5

0

0

0

C2. MV REF Sensitivity Test (Neutral side CT reversed) Descript

Measured Current at

MV REF

ion

Protection Panel E03+R (mA))

Voltage Measured Across

Current

F64MV

Resis.

NCT

RET615

Relay

Current

F64MV

Display

(A)

(A)

R

Y

B

N

(mA)

XA:14

XA:15

XA:16

XA:17

XA:

Relay

Metrosil

Stabilize

13&14

18&19

RET615

RMMV

Resistor

(A)

F64MV

(V)

RSMV

(mV) R Ph

179

5.1

2.9

171.3

177.8/

(V)

0

145

145

349

903

351

0

150.1

149.9

352

923

358

0

145.9

145.2

346

898

349

Current

F64MV

Resis.

179 Y Ph

0

184

0

176

184/ 181.4

B Ph

0

0

178

169.7

175.1/ 178.2

C3. MV REF Stable condition Descript

Measured Current at

MV REF

Voltage Measured Across

ion

Protection Panel E03+R (mA))

NCT

RET615

Relay

Current

F64MV

Display

(A)

(A)

R

Y

B

N

(mA)

XA:14

XA:15

XA:16

XA:17

XA:

Relay

Metrosil

Stabilize

13&14

18&19

RET615

RMMV

Resistor

(A)

F64MV

(V)

RSMV

(mV)

Date Name Signature

Tested by ABB Transmission & Distribution

Witnessed by

ENERGO

20.02.2013 R.Krishna Murthy

20.02.2013 Mohammad Rasheed

(V)

Approved by

SITE TEST REPORT

Replacement of 132/11kV Transformers, Transformer Protection Panels and 110 V Batteries at W13 Substation (CONTRACT No. N6399) Consultant

ENERGO

Main Contractor R Ph

183

0.1

Name of the Equipment Name of the Feeder Manufacturer Date 2.2

182.4

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013

181.2/

Page 8 – 10

0

0

0

0

0

0

0

42.8

42.5

0

0

0

0

20.7

20.9

0

0

0

180.4 Y Ph

0.1

187

5.1

187.6

188.1/ 187.8

B Ph

0

0

182.4

180

179.8/ 180

REMARKS:

40MVA Transformer MV REF circuit found -:-

D1.Transformer O/C & E/F protection Core:- CT Ratio 300/1A CT Details

Secondary Current [mA] – Monitored at:

Phase

SWGR E03+S (mA)

Injected

E03+R1, TB XC=

F51/51NHV-TB:X120 (mA)

132kV Relay Panel (mA) T1

300/1A

Y

B

N

502

505

508

514

R

Y

B

N

R

Y

N

01

02

03

04

3A

5A

7A

9A

101

31.5

31.5

37.7

101

31.2

31.8

37.8

YN

31.2

104

31.0

40

31

105

31

40

BN

31

30.3

101

37.9

31

31

101

37

RYB

110

105

110

0

110

111

110

0

F51/51NHV Display (A) R

Y

B

N

IL1 31.8

IL2 9.9

IL3 9.9

IL4 11.9

9.9

32.6

9.9

12.6

9.8

9.8

31.5

11.9

Date Name Signature

B

RN

1S1-1S2 O/C,E/F

R

Tested by ABB Transmission & Distribution

ENERGO

Witnessed by

20.02.2013 R.Krishna Murthy

20.02.2013 Mohammad Rasheed

Approved by

SITE TEST REPORT

Replacement of 132/11kV Transformers, Transformer Protection Panels and 110 V Batteries at W13 Substation (CONTRACT No. N6399) Consultant

Name of the Equipment Name of the Feeder Manufacturer Date

ENERGO

Main Contractor

34.5

34.9

34.5

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013

Page 9 – 10

0

D2. Transformer MV NCT for SBEF protection Core: - CT Ratio 2500/1A CT Details

Phase

Pri

Injected

Current (A)

Secondary Current [mA] – Monitored at: E03+R1, TB XC=

Test plug X51NMV

132kV Relay Panel

(RTXP18)

+F51NMV Display

224, 225 @MK

CT4

+F51NMV (REF615)

(TB X120)

(A)

Relay

10

11

9A

10A

13,14

RN

183

179.9

183

183.4

183

183

476.0

YN

187

188

187

187

187

186

485

BN

182

182

181

183

181

182

471.3

RYB

0

0

0

0

0

0

0

Tr. MV SBEF

Io

D3. Transformer HV NCT for SBEF protection Core: - CT Ratio 300/1A CT Details

Phase Injected

Current (A)

CT1 Tr. HV SBEF

D4.

Date Name Signature

Secondary Current [mA] – Monitored at:

Pri

Tr (202) MK box N(220,221)

E03+R1, TB XC=

Test plug X51NHV

+F51NHV (REF615)

+F51NHV

132kV Relay Panel

(RTXP18)

(TB X120)

Display

S1

S2

A

6

7

9A

10A

13

14

Io

RN

37.8

37.3

37

37.5

37.2

37.2

11.7

YN

39.0

39.5

39

39.6

39.9

39.9

12.5

BN

37.3

36.6

36.9

37.6

37.0

37.8

11.7

RYB

0

0

0

0

0

0

0

Transformer Tertiary Wdg CT for SBEF protection Core:- CT Ratio 300/1A Tested by ABB Transmission & Distribution

Witnessed by

ENERGO

20.02.2013 R.Krishna Murthy

20.02.2013 Mohammad Rasheed

Approved by

SITE TEST REPORT

Replacement of 132/11kV Transformers, Transformer Protection Panels and 110 V Batteries at W13 Substation (CONTRACT No. N6399) Consultant

Name of the Equipment Name of the Feeder Manufacturer Date

ENERGO

Main Contractor CT Details

Phase

Current (A)

CT9 Tr. Tertiary

Page 10 – 10

Secondary Current [mA] – Monitored at:

Pri

Injected

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013

E03+R1, TB XC=

Test plug X51NT

+F51NT (REF615)

132kV Relay Panel

(RTXP18)

(TB X120)

Tr(202) MK box 3N(228,229)

+F51NT Display

S1

S2

Io

13

14

9A

10A

13

14

A

RN

0

0

0

0

0

0

0

YN

0

0

0

0

0

0

0

BN

0

0

0

0

0

0

0

RYB

0

0

0

0

0

0

0

SBEF

11KV Panel side Display results-:A21-Siemens BCPU Relay 7SJ63 7SJ63Display

R

Y

B

N

RYB

IL1

0.47

0

0

0.47

0.4

KA

IL2

0

0.47

0

0.47

0.4

KA

IL3

0

0

0.48

0.47

0.4

KA

IN

0.47

0.47

0.47

0

0

KA

AVR Panel & BCU Measurement: Phases

AVR

BCU

(A)

(A)

R

0

0

Y

0.2

482

B

0

0

RYB

0.2

393

Date Name Signature

Tested by ABB Transmission & Distribution

ENERGO

Witnessed by

20.02.2013 R.Krishna Murthy

20.02.2013 Mohammad Rasheed

Approved by

SITE TEST REPORT

Replacement of 132/11kV Transformers, Transformer Protection Panels and 110 V Batteries at W13 Substation (CONTRACT No. N6399) Consultant

Name of the Equipment Name of the Feeder Manufacturer Date

ENERGO

Main Contractor

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013

Page 11 – 10

Winding Temperature CT Measurements: Phases R Y B RYB

HV Temp Sec.Current 0 245 0 270

Injection

MV Temp Sec. Current 0 462 0 370.9

LCC

HV Temp CT Ratio: 250/2A MV Temp CT Ratio: 2050/2A

RCC

Main Tariff

Check Tariff

R

Y

B

N

R

Y

B

N

R

Y

B

R

Y

B

R

30/154

0/48

0/47

-

30/150

0/47

0/47

-

0.5

0

0

0.5

0

0

Y

0/48

30/157

0/48.2

-

0/46

30/153

0/48

-

0

0.5

0

0

0.5

0

B

0/47

0/47

30/152

-

0/47

0/47

30/151

-

0

0

0.5

0

0

0.5

RYB

30/165

30/167

30/166

-

30/162

30/164

30/163

-

0.4

0.4

0.4

0.4

0.4

0.4

N

RTU R

Y

B

R

153

47

47

Y

47

157

48

-

B

47

47

152

-

RYB

164

168

165

-

Remarks -:- CT circuits for Tr Diff.Stability, HV & MV REF stable confirmed. ** Three phase generator voltage injected through K11 spare bay at 11kV side

Date Name Signature

Tested by ABB Transmission & Distribution

ENERGO

Witnessed by

20.02.2013 R.Krishna Murthy

20.02.2013 Mohammad Rasheed

Approved by