Power Transformer Test 007 Bharat
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Test Report For Power Transformer Project: J3
Plant: PCG-SEZ
Report No: L&T/PT/ET-HCH200-007
Substation No: HCH200-10
Date of Testing: 18-08-2017
Transformer Details : Tag No :ET-HCH200-007
Serial No: 5417/1
Make: BHARAT BIJILEE
Type of Tap changer: OCTC
Type of Cooling:
ONAN
Primary Voltage: 33000 V
Rated MVA:
25
Secondary Voltage: 11500 V
Rated Amps: HV 437.3
Normal Tap :3
Rated Amps: LV
No. of Phase :3
1255.1
Temperature rise over 50▫C Ambient :
Top oil : 50
YOM:2014
Avg wdg : 55
Insulation Level:
HV
170KVp / 70 KV rms
Insulation Level:
LV
75 KVp / 28 KV rms
Insulation Level:
LVN
75 KVp / 28 KV rms
Core & Coil: 21500 Tank & Fittings: 13800 Mass Of Oil:6800 Total Mass:42400 Short Circuit Rating HV:
% Impedance HV/LV: 8.1279
Short Circuit Rating LV:
Vector Group: Dyn11
Load Loss Max(KW) : 90.594
Frequency: 50 Hz
No Load Loss Max (KW) : 11.064
TURN WHEEL TO REQUIRED TAP POSITION TAP POSITION
LEADS JOINED
HV VOLTAGE (KV)
1(MAX)
5-6
2
6-4 Contractor Engineer
HIGH VOLTAGE
LOW VOLTAGE
LINE CURRENT (A)
LINE CURRENT (A)
34650
416.5
-
33825
426.7
-
Reliance Engineer
Signature Name
Date Page 1 of 7
Reliance O&M/TPI
Test Report For Power Transformer Project: J3
Plant: PCG-SEZ
Report No: L&T/PT/ET-HCH200-007
3(NOR)
4-7
33000
437.3
1255.1
4
7-3
32175
448.6
-
5(MIN)
3-8
31350
460.4
-
Tests:
1.Winding Resistance: in mΩ Tap Position
Measured Value in HV Side (mΩ)
1
146.7 mΩ 157.4 mΩ 148.2 mΩ
2
142.2 mΩ 152.2 mΩ 144.2 mΩ
3
139.3 mΩ 145.5 mΩ 139.2 mΩ
4
135.6 mΩ 139.3 mΩ 135.4 mΩ
5
132.4 mΩ 135.7 mΩ
1U-1V
1V-1W
1W-1U
Measured Value in LV Side (mΩ) 2U-2V
2V-2W
2W-2U
2U-2N
12.59 mΩ
12.72 mΩ
12.69 mΩ
7.55 mΩ
2V-2N
2W-2N
7.47 mΩ
7.10 mΩ
131.9mΩ
2. Insulation Resistance Test: 5000 v (dc) in GΩ Applied Voltage between
Test Voltage
IR at 1 Min
IR at 10 Min
PI (10min /1min )
HV – Earth
5000 V
9.51 GΩ
18.9 GΩ
1.98
LV-Earth
5000 V
12.1 GΩ
31.7 GΩ
2.61
HV-LV
5000 V
13.1 GΩ
36.5 GΩ
2.78
3.Ratio Test:
Applied Voltage : 1U1V: 402 , 1V1W:403 , 1W1U:402 Calculated Ratio (415V)
Measured Ratio(V)
Tap No. 2U2V 2V2W 2W2U
2U2N
2V2N
2W2N 2U2V
2V2W
2W2U 2U2N
2V2N
2W2N
1
133.5 133.8
133.5
77.07
77.2
77.07
133.9
133.7
133.6
77.0
76.9
76.8
2
136.7 137.0
136.7
78.92
79.09 78.92
136.9
136.6
136.4
78.8
78.8
78.5
3
140.5 140.9
140.5
81.11
81.34 81.11
140.5
140.1
139.9
80.6
81.0
80.6
Contractor Engineer
Reliance Engineer
Signature Name
Date Page 2 of 7
Reliance O&M/TPI
Test Report For Power Transformer Project: J3
Plant: PCG-SEZ
Report No: L&T/PT/ET-HCH200-007
4
144.0 144.4
144.0
83.13
83.36 83.13
144.4
144.1
143.3
83.1
83.4
82.5
5
147.7 148.1
147.7
85.27
85.50 85.27
148.4
146.6
146.0
85.2
85.3
84.8
4.Magnetic Balance Test: Applied Voltage (V)
Tap No.
1
3
5
Measured Voltage (V)
Ø out
1U1V
1V1W
1W1U
2U2V
2V2W
2W2U
2U2N
2V2N
2W2N
R
130.3
270.1
399
26.94
128.9
101.9
25.06
51.7
76.7
Y
204.0
404
199.6
116.4
115.2
1.046
39.26
77.0
38.38
B
402
271.6
131.8
129.1
26.84
101.5
77.0
51.7
25.34
R
203.3
404
199.2
121.9
120.9
0.99
40.5
78.6
39.32
Y
132.1
269.9
399
27.68
134.9
107.2
26.50
53.8
80.5
B
402
269.8
134.2
135.4
27.34
107.9
80.9
53.9
26.89
R
132.0
270.2
399
29.28
142.0
112.7
28.05
56.9
84.2
Y
205.1
405
199.8
128.7
128.0
1.20
42.9
85.1
42.0
B
402
271.1
132.4
142.7
29.34
113.2
84.9
56.8
27.81
5.Magnetizing Current Test: 5A. Magnetizing Current from HV Side: 415 V
Tap No.
Applied Voltage (V)
Measured Current (mA)
1U1V
1V1W
1W1U
1U
1V
1W
1
402
402
402
13.16
12.09
12.39
2
402
402
402
13.30
12.12
13.84
3
402
402
402
14.34
13.75
13.19
4
403
403
402
15.27
13.94
13.27
5
403
404
402
14.16
13.51
16.06
5B. Magnetizing Current from LV Side: 230 V Contractor Engineer
Reliance Engineer
Signature Name
Date Page 3 of 7
Reliance O&M/TPI
Test Report For Power Transformer Project: J3
Plant: PCG-SEZ
Report No: L&T/PT/ET-HCH200-007
Applied Voltage (V)
Measured Current (mA)
2U2N
2V2N
2W2N
2U
2V
2W
226.6
234.8
234.8
122.9
100.7
123.7
6. Core and Frame Insulation Resistance Test(0-1 GΩ) Applied Voltage
Frame – Earth
Core-Earth
Frame-Core
between Test Voltage
500 V
IR at 1 Min
>1GΩ
>1GΩ
>1GΩ
7.Vector Group Test (at Normal Tap):
Terminal Shorted: 1U – 2U
Applied Voltage : 415 V
Condition – 1:
1U1V = 1U2N+1V2N
402=80.8+322.9
Condition – 2:
1U2w=1U2v
140.2=140.9
Condition – 3:
1W2W<1W2V Contractor Engineer
289.3<425 Reliance Engineer
Signature Name
Date Page 4 of 7
Reliance O&M/TPI
Test Report For Power Transformer Project: J3
Plant: PCG-SEZ
Condition 1U1V 1U2N 1V2N 1W2W
Report No: L&T/PT/ET-HCH200-007
Measured Voltage, V 402 80.8 322.9 289.3
Result: OK
Condition 1U2W 1U2V 1W2V -
Transformer Vector Group is :
Measured Voltage, V 140.2 140.9 425 OK
Attach Test Certificate For Earth Resistance(Wherever Applicable): Attach Test Certificate For Dissolved Gas Analysis (Wherever Applicable): Attach Test Certificate for Stability Test – Differential / Ref. (Wherever Applicable): Attach Test Certificate for Transformer Oil : Attach Test Certificate for Feeder / Cables
:
Silica Gel: Protection Device Checks Buchholz Relay up to Panel/Relay end Magnetic Oil Indicator up to Panel/Relay end Oil Temperature Indicator up to Panel/Relay end Winding Temperature Indicator up to Panel/Relay end Pressure Relief Valve up to Panel/Relay end
Alarm Contact
Trip Contact
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Marshalling Box Checks : Description
Remarks
Tightness of Neutral CTs wiring Lighting Circuit checks Contractor Engineer
Reliance Engineer
Signature Name
Date Page 5 of 7
Reliance O&M/TPI
Test Report For Power Transformer Project: J3
Plant: PCG-SEZ
Heater circuit Checks
Report No: L&T/PT/ET-HCH200-007
IR=
Coil resistance=
Earth checks wherever applicable
8. Cooling Fan Test (Wherever Applicable) : Fan Details: Make : Marathon Electric Frequency : 50Hz Watts :
Phase : Voltage : Rpm :
Amps : Insulation Class :
Fan No
Sr.No
Insulation Resistance
Fan 1 Fan 2 Fan 3 Fan 4
-
-
UV -
Winding Resistance VW UW -
Comments: NIL Test Result: OK
Test Instrument Used Sr. No. of Instrument 116805
Instrument Name Digital multimeter
Contractor Engineer
Make Rishi
Model No 15S
Reliance Engineer
Signature Name
Date Page 6 of 7
Rating 1000 V
Tested on Northlab India Pvt.ltd
Calibration Validity 10-07-2017
Reliance O&M/TPI
Test Report For Power Transformer Project: J3 2304.08W093
Plant: PCG-SEZ Transformer Resistance Meter
Report No: L&T/PT/ET-HCH200-007 Scope
TRM 104
10Ma-20Ω
Scope T&M India Pvt.ltd
03.02.2018
B2009342
Digital Insulation tester
Kyoritsu
3125
5000 V
Northlab India Pvt.ltd
25.01.2018
HTC1506CG0009
Leakage Tester
HTC
CL-2054
40ma100mA
Northlab India Pvt.ltd
08.04.2018
Contractor Engineer
Reliance Engineer
Signature Name
Date Page 7 of 7
Reliance O&M/TPI
Plant: PCG-SEZ
Report No: L&T/PT/ET-HCH200-007
Substation No: HCH200-10
Date of Testing: 18-08-2017
Transformer Details : Tag No :ET-HCH200-007
Serial No: 5417/1
Make: BHARAT BIJILEE
Type of Tap changer: OCTC
Type of Cooling:
ONAN
Primary Voltage: 33000 V
Rated MVA:
25
Secondary Voltage: 11500 V
Rated Amps: HV 437.3
Normal Tap :3
Rated Amps: LV
No. of Phase :3
1255.1
Temperature rise over 50▫C Ambient :
Top oil : 50
YOM:2014
Avg wdg : 55
Insulation Level:
HV
170KVp / 70 KV rms
Insulation Level:
LV
75 KVp / 28 KV rms
Insulation Level:
LVN
75 KVp / 28 KV rms
Core & Coil: 21500 Tank & Fittings: 13800 Mass Of Oil:6800 Total Mass:42400 Short Circuit Rating HV:
% Impedance HV/LV: 8.1279
Short Circuit Rating LV:
Vector Group: Dyn11
Load Loss Max(KW) : 90.594
Frequency: 50 Hz
No Load Loss Max (KW) : 11.064
TURN WHEEL TO REQUIRED TAP POSITION TAP POSITION
LEADS JOINED
HV VOLTAGE (KV)
1(MAX)
5-6
2
6-4 Contractor Engineer
HIGH VOLTAGE
LOW VOLTAGE
LINE CURRENT (A)
LINE CURRENT (A)
34650
416.5
-
33825
426.7
-
Reliance Engineer
Signature Name
Date Page 1 of 7
Reliance O&M/TPI
Test Report For Power Transformer Project: J3
Plant: PCG-SEZ
Report No: L&T/PT/ET-HCH200-007
3(NOR)
4-7
33000
437.3
1255.1
4
7-3
32175
448.6
-
5(MIN)
3-8
31350
460.4
-
Tests:
1.Winding Resistance: in mΩ Tap Position
Measured Value in HV Side (mΩ)
1
146.7 mΩ 157.4 mΩ 148.2 mΩ
2
142.2 mΩ 152.2 mΩ 144.2 mΩ
3
139.3 mΩ 145.5 mΩ 139.2 mΩ
4
135.6 mΩ 139.3 mΩ 135.4 mΩ
5
132.4 mΩ 135.7 mΩ
1U-1V
1V-1W
1W-1U
Measured Value in LV Side (mΩ) 2U-2V
2V-2W
2W-2U
2U-2N
12.59 mΩ
12.72 mΩ
12.69 mΩ
7.55 mΩ
2V-2N
2W-2N
7.47 mΩ
7.10 mΩ
131.9mΩ
2. Insulation Resistance Test: 5000 v (dc) in GΩ Applied Voltage between
Test Voltage
IR at 1 Min
IR at 10 Min
PI (10min /1min )
HV – Earth
5000 V
9.51 GΩ
18.9 GΩ
1.98
LV-Earth
5000 V
12.1 GΩ
31.7 GΩ
2.61
HV-LV
5000 V
13.1 GΩ
36.5 GΩ
2.78
3.Ratio Test:
Applied Voltage : 1U1V: 402 , 1V1W:403 , 1W1U:402 Calculated Ratio (415V)
Measured Ratio(V)
Tap No. 2U2V 2V2W 2W2U
2U2N
2V2N
2W2N 2U2V
2V2W
2W2U 2U2N
2V2N
2W2N
1
133.5 133.8
133.5
77.07
77.2
77.07
133.9
133.7
133.6
77.0
76.9
76.8
2
136.7 137.0
136.7
78.92
79.09 78.92
136.9
136.6
136.4
78.8
78.8
78.5
3
140.5 140.9
140.5
81.11
81.34 81.11
140.5
140.1
139.9
80.6
81.0
80.6
Contractor Engineer
Reliance Engineer
Signature Name
Date Page 2 of 7
Reliance O&M/TPI
Test Report For Power Transformer Project: J3
Plant: PCG-SEZ
Report No: L&T/PT/ET-HCH200-007
4
144.0 144.4
144.0
83.13
83.36 83.13
144.4
144.1
143.3
83.1
83.4
82.5
5
147.7 148.1
147.7
85.27
85.50 85.27
148.4
146.6
146.0
85.2
85.3
84.8
4.Magnetic Balance Test: Applied Voltage (V)
Tap No.
1
3
5
Measured Voltage (V)
Ø out
1U1V
1V1W
1W1U
2U2V
2V2W
2W2U
2U2N
2V2N
2W2N
R
130.3
270.1
399
26.94
128.9
101.9
25.06
51.7
76.7
Y
204.0
404
199.6
116.4
115.2
1.046
39.26
77.0
38.38
B
402
271.6
131.8
129.1
26.84
101.5
77.0
51.7
25.34
R
203.3
404
199.2
121.9
120.9
0.99
40.5
78.6
39.32
Y
132.1
269.9
399
27.68
134.9
107.2
26.50
53.8
80.5
B
402
269.8
134.2
135.4
27.34
107.9
80.9
53.9
26.89
R
132.0
270.2
399
29.28
142.0
112.7
28.05
56.9
84.2
Y
205.1
405
199.8
128.7
128.0
1.20
42.9
85.1
42.0
B
402
271.1
132.4
142.7
29.34
113.2
84.9
56.8
27.81
5.Magnetizing Current Test: 5A. Magnetizing Current from HV Side: 415 V
Tap No.
Applied Voltage (V)
Measured Current (mA)
1U1V
1V1W
1W1U
1U
1V
1W
1
402
402
402
13.16
12.09
12.39
2
402
402
402
13.30
12.12
13.84
3
402
402
402
14.34
13.75
13.19
4
403
403
402
15.27
13.94
13.27
5
403
404
402
14.16
13.51
16.06
5B. Magnetizing Current from LV Side: 230 V Contractor Engineer
Reliance Engineer
Signature Name
Date Page 3 of 7
Reliance O&M/TPI
Test Report For Power Transformer Project: J3
Plant: PCG-SEZ
Report No: L&T/PT/ET-HCH200-007
Applied Voltage (V)
Measured Current (mA)
2U2N
2V2N
2W2N
2U
2V
2W
226.6
234.8
234.8
122.9
100.7
123.7
6. Core and Frame Insulation Resistance Test(0-1 GΩ) Applied Voltage
Frame – Earth
Core-Earth
Frame-Core
between Test Voltage
500 V
IR at 1 Min
>1GΩ
>1GΩ
>1GΩ
7.Vector Group Test (at Normal Tap):
Terminal Shorted: 1U – 2U
Applied Voltage : 415 V
Condition – 1:
1U1V = 1U2N+1V2N
402=80.8+322.9
Condition – 2:
1U2w=1U2v
140.2=140.9
Condition – 3:
1W2W<1W2V Contractor Engineer
289.3<425 Reliance Engineer
Signature Name
Date Page 4 of 7
Reliance O&M/TPI
Test Report For Power Transformer Project: J3
Plant: PCG-SEZ
Condition 1U1V 1U2N 1V2N 1W2W
Report No: L&T/PT/ET-HCH200-007
Measured Voltage, V 402 80.8 322.9 289.3
Result: OK
Condition 1U2W 1U2V 1W2V -
Transformer Vector Group is :
Measured Voltage, V 140.2 140.9 425 OK
Attach Test Certificate For Earth Resistance(Wherever Applicable): Attach Test Certificate For Dissolved Gas Analysis (Wherever Applicable): Attach Test Certificate for Stability Test – Differential / Ref. (Wherever Applicable): Attach Test Certificate for Transformer Oil : Attach Test Certificate for Feeder / Cables
:
Silica Gel: Protection Device Checks Buchholz Relay up to Panel/Relay end Magnetic Oil Indicator up to Panel/Relay end Oil Temperature Indicator up to Panel/Relay end Winding Temperature Indicator up to Panel/Relay end Pressure Relief Valve up to Panel/Relay end
Alarm Contact
Trip Contact
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Marshalling Box Checks : Description
Remarks
Tightness of Neutral CTs wiring Lighting Circuit checks Contractor Engineer
Reliance Engineer
Signature Name
Date Page 5 of 7
Reliance O&M/TPI
Test Report For Power Transformer Project: J3
Plant: PCG-SEZ
Heater circuit Checks
Report No: L&T/PT/ET-HCH200-007
IR=
Coil resistance=
Earth checks wherever applicable
8. Cooling Fan Test (Wherever Applicable) : Fan Details: Make : Marathon Electric Frequency : 50Hz Watts :
Phase : Voltage : Rpm :
Amps : Insulation Class :
Fan No
Sr.No
Insulation Resistance
Fan 1 Fan 2 Fan 3 Fan 4
-
-
UV -
Winding Resistance VW UW -
Comments: NIL Test Result: OK
Test Instrument Used Sr. No. of Instrument 116805
Instrument Name Digital multimeter
Contractor Engineer
Make Rishi
Model No 15S
Reliance Engineer
Signature Name
Date Page 6 of 7
Rating 1000 V
Tested on Northlab India Pvt.ltd
Calibration Validity 10-07-2017
Reliance O&M/TPI
Test Report For Power Transformer Project: J3 2304.08W093
Plant: PCG-SEZ Transformer Resistance Meter
Report No: L&T/PT/ET-HCH200-007 Scope
TRM 104
10Ma-20Ω
Scope T&M India Pvt.ltd
03.02.2018
B2009342
Digital Insulation tester
Kyoritsu
3125
5000 V
Northlab India Pvt.ltd
25.01.2018
HTC1506CG0009
Leakage Tester
HTC
CL-2054
40ma100mA
Northlab India Pvt.ltd
08.04.2018
Contractor Engineer
Reliance Engineer
Signature Name
Date Page 7 of 7
Reliance O&M/TPI
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