T1 Transforemer Stability Test Report

SITE TEST REPORT

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

Consultant

Name Name of the the Equipm Equipmen entt Nam amee of the the Fe Feeder Manufacturer Date

ENERGO

Main Contractor

40MV 40MVA A Power Power Transf Transform ormerer-T2 T201 01 E03 / K09 K09 Tra Transfo sforme rmer Fe 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 side (F64HV)

Date Name Signature

Tested by

Witnessed by

ABB Transmission & Distribution

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


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)


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)


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

Witnessed by


ENERGO



Approved by

SITE TEST REPORT


Consultant

ENERGO

Main Contractor

PHASE


Primary current (A) 132kV 11kV 111 112 109

R Y B


Relay Display Measurement (A) 132kV 11kV

151 150 151

34.17 34.55 33.98

Diff. Display Measurement (A) Diff. Rest

392 392 387

0 0 0

34.32

Page 3 – 10

CT Terminals Sec Current (A) 132kV 11kV 0.103 0.107 0.104

0.186 0.192 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

R Y B

Primary current (A) 132kV 11kV 10 150 8 152 10 151

Relay Display Measurement (A) 132kV 11kV 3.2 393 3.1 390 3.0 385

Diff. Display Measurement (A) Diff. Rest 31.20 34 31.8 31.2

CT Terminals Sec Current (mA) 132kV 11kV 9.6 153 9.2 152 9.0 149 1.6

N

5.1

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) Diff. Display Relay Display (A) current (A) Measurement (A) 132kV 11kV 132kV 11kV Diff. Rest 132kV 11kV 111 152 110 151 0 34.2 34.2 193 R 111 110 -

Y B N REMARKS:

150 151 -

111 110 -

153 151 -

0 0 -

-

34.2 33.0 -

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

Witnessed by


ENERGO



Approved by

389 388 -

SITE TEST REPORT


Consultant


ENERGO

Main Contractor Neutral CT Ratio

: 300/1 A

Relay Setting (Is)

:. A

Stabilizing resistor (final setting)

:_

Stabilizing resistor set at

:

Transformer Tap position

: 13

Primary current measured

:


Page 4 – 10

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

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

XA:24

(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

Witnessed by


ENERGO



Approved by

SITE TEST REPORT


Consultant


ENERGO

Main Contractor

Descript

Measured Current at

HV

ion

Protection Panel E03+R (mA) R XA:21

Y

B

XA:22

XA:23

N

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

XA:24

(V) R ph

93.7

38.4

37.9

18.9

29.9/

Normal Y ph

(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

31.8/

Normal B ph

Page 5 – 10

31.8 37.8

37.9

92.5

19

28.7/

Normal

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:

Relay

Metrosil

Stabilize

11&12

RET615

RMHV

Resistor

F64HV

(mV)

RSHV

XA:24

(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

Witnessed by


ENERGO



Approved by

SITE TEST REPORT


Consultant


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)


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

Witnessed by


ENERGO



Approved by

SITE TEST REPORT


Consultant


ENERGO

Main Contractor Neut.


Page 7 – 10

178.2

Normal

RYB

152

152

149

0

0

0

24.5

25.5

0

0

0

Current RET615 F64MV 13&14 (A)

F64MV Relay Display (A)

Resis. Current (A)

349

903

351

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

Measured Current at Protection Panel E03+R (mA) )

MV REF NCT (mA)

R XA:14

Y XA:15

B XA:16

N XA:17

R Ph

179

5.1

2.9

171.3

177.8/ 179

Y Ph

0

184

0

176

B Ph

0

0

178

169.7

XA: 18&19

Voltage Measured Across Relay RET615 F64MV (mV) 0

Metrosil RMMV (V) 145

Stabilize Resistor RSMV (V) 145

184/ 181.4

0

150.1

149.9

352

923

358

175.1/ 178.2

0

145.9

145.2

346

898

349

Current RET615 F64MV 13&14 (A)

F64MV Relay Display (A)

Resis. Current (A)

0

0

0

C3. MV REF Stable condition Descript ion

Measured Current at Protection Panel E03+R (mA) )

MV REF NCT (mA)

R

Y

B

N

XA:14

XA:15

XA:16

XA:17

XA: 18&19

R Ph

183

0.1

2.2

182.4

181.2/ 180.4

Y Ph

0.1

187

5.1

187.6

B Ph

0

0

182.4

180

REMARKS:

Date Name Signature


Relay RET615 F64MV (mV) 0

Metrosil RMMV (V) 0

Stabilize Resistor RSMV (V) 0

188.1/ 187.8

0

42.8

42.5

0

0

0

179.8/ 180

0

20.7

20.9

0

0

0

40MVA Transformer MV REF circuit found -:-

Tested by

Witnessed by


ENERGO



Approved by

SITE TEST REPORT


Consultant


ENERGO

Main Contractor


Page 8 – 10

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

Secondary Current [mA] – Monitored at:

Phase Injected

SWGR E03+S (mA)

T1 1S1-1S2 O/C,E/F 300/1A

R 502

Y 505

B 508

E03+R1, TB XC= 132kV Relay Panel (mA) R Y B N 01 02 03 04 101 31.5 31.5 37.7 31.2 104 31.0 40 31 30.3 101 37.9 110 105 110 0

N 514

RN YN BN RYB F51/51NHV Display (A) R Y B N IL1 IL2 IL3 IL4 31.8 9.9 9.9 11.9 9.9 32.6 9.9 12.6 9.8 9.8 31.5 11.9 34.5 34.9 34.5 0

F51/51NHV-TB:X120 (mA) R 3A 101 31 31 110

Y 5A 31.2 105 31 111

B 7A 31.8 31 101 110

N 9A 37.8 40 37 0

D2. Transformer MV NCT for SBEF protection Core: - CT Ratio 2500/1A CT Details CT4 Tr. MV SBEF

Date Name Signature

Phase Injected

Pri Current (A)

Secondary Current [mA] – Monitored at: E03+R1, TB XC= 132kV Relay Panel

Test plug X51NMV (RTXP18)

224, 225 @MK

+F51NMV (REF615) Relay 183

+F51NMV Display (A) Io 476.0

RN

10 183

11 179.9

9A 183

10A 183.4

(TB X120) 13,14 183

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

Tested by

Witnessed by


ENERGO



Approved by

SITE TEST REPORT


Consultant


ENERGO

Main Contractor


Page 9 – 10

D3. Transformer HV NCT for SBEF protection Core: - CT Ratio 300/1A CT Details CT1 Tr. HV SBEF

D4. CT Details CT9 Tr. Tertiary SBEF

Phase Injected

Pri Current (A)

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

Secondary Current [mA] – Monitored at: E03+R1, TB XC= 132kV Relay Panel S1 S2 6 7 37.8 37.3

Test plug X51NHV (RTXP18)

+F51NHV (REF615) (TB X120)

9A 37

10A 37.5

13 37.2

14 37.2

+F51NHV Display A Io 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 Phase Injected

Pri Current (A)

Tr(202) MK box 3N(228,229) RN YN BN RYB

Secondary Current [mA] – Monitored at: E03+R1, TB XC= 132kV Relay Panel S1 S2 13 14 0 0 0 0

Test plug X51NT (RTXP18)

+F51NT (REF615) (TB X120)

+F51NT Display

9A

10A

13

14

Io A

0 0 0 0

0 0 0 0

0 0 0 0

0 0 0 0

0 0 0 0

0 0 0 0

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

Date Name Signature

Tested by

Witnessed by


ENERGO



Approved by

SITE TEST REPORT


Consultant


ENERGO

Main Contractor IN

0.47

0.47

0.47

40MVA Power Transformer-T201 E03 / K09 Transformer Feeder ABB 20.02.2013 0

0

Page 10 – 10

KA

AVR Panel & BCU Measurement: Phases

AVR

BCU

(A)

(A)

R

0

0

Y

0.2

482

B

0

0

RYB

0.2

393

Winding Temperature CT Measurements: Phases R Y B RYB

HV Temp Sec.Current 0 245 0 270

MV Temp Sec. Current 0 462 0 370.9

HV Temp CT Ratio: 250/2A

MV Temp CT Ratio: 2050/2A Injection

LCC

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

Date Name Signature

-

Tested by

Witnessed by


ENERGO



Approved by

SITE TEST REPORT


Consultant


ENERGO

Main Contractor B

47

47

152

-

RYB

164

168

165

-


Page 11 – 10

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

Witnessed by


ENERGO



Approved by

T1 Transforemer Stability Test Report

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