1573446008083_transformer Report-2.docx
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TAN DELTA TEST REPORT FOR POWER TRANSFORMER
VEPL/RAMPS/D&RLA
DATE : 11/06/2019
CUSTOMER : M/s. KALPATARU POWER TRANSMISSION LTD PROJECT : 220/33 KV GIS S/S HVPNL
Page No: 02
1 .Equipment details: Make
: IMP POWERS LTD
Volts at No Load HV
: 220KV
Volts at No Load LV
: 33KV
Year of MFG
: 2017/18
Frequency
: 50 Hz
Vector Group
: YNyn0
Serial No
: PT-8079
2. Using Equipment Details Make
: Megger
Range
: 0-12Kv
Serial No
: 19781015
Calibration Due Date
: 23-08-2019
3. Atmospheric temperature: 45˚C
TESTED BY VOLTECH
NAME DESIGNATION SIGNATURE & DATE
BHARATH RAJ.C DIAGNOSTIC ENGINEER
WITNESS BY KPTL
WITNESS BY IMP POWER LTD
WITNESS BY HVPNL
TAN DELTA TEST REPORT FOR POWER TRANSFORMER
VEPL/RAMPS/D&RLA
DATE : 11/06/2019
CUSTOMER : M/s. KALPATARU POWER TRANSMISSION LTD PROJECT : 220/33 KV GIS S/S HVPNL
Page No: 02
Tan delta test for HV BUSHING: Serial No
Mode
R PH (37997010830)
UST
Y PH (37997010735)
UST
B PH (37997010857)
UST
Applied Voltage (kV)
Measured Current(mA)
Capacitance (Pf)
Tan Delta (%)
Power (mW)
2 5 10 2 5 10 2 5 10
0.257377 0.642927 1.28833 0.260185 0.64931
409.593 409.51 409.89 414.123 414.03
0.203129 0.202114 0.203462 0.223279 0.22297
0.001046 0.006495 0.026223 0.001162 0.007228
1.30047 0.250243 0.625882 1.25538
414.435 399.546 399.449 399.808
0.222284 0.203714 0.203797 0.205768
0.028884 0.001016 0.006361 0.025803
COMMENTS: According to the IEEE standard of C57.12.90-1980, Permissible limit of dissipation factor is <0.7%
TESTED BY VOLTECH
NAME DESIGNATION SIGNATURE & DATE
BHARATH RAJ.C DIAGNOSTIC ENGINEER
WITNESS BY KPTL
WITNESS BY IMP POWER LTD
WITNESS BY HVPNL
TAN DELTA TEST REPORT FOR POWER TRANSFORMER
VEPL/RAMPS/D&RLA
DATE : 11/06/2019
CUSTOMER : M/s. KALPATARU POWER TRANSMISSION LTD PROJECT : 220/33 KV GIS S/S HVPNL
Page No: 02
Tan delta test for (HV-LV) WINDING Winding
Mode
(HV)-(LV)
UST
(HV)-(E)
GSTg
(HV)-(LV+E)
GST
Applied Voltage (kV)
Measured Current(mA)
Capacitance (Pf)
Tan Delta (%)
Power (mW)
2 5 10 2 5 10 2 5 10
3.67173 9.12756 18.3157 2.63297 6.59906
5840.53 5839.51 5833.87 4204.82 4204
0.263335 0.262257 0.261452 1.59213 1.5945
0.019337 0.119031 0.477959 0.08346 0.525076
13.1833 6.29011 15.6782 31.5143
4198.9 10048.7 10028.9 10035.5
1.58871 0.818828 0.817023 0.81814
2.09055 0.102532 0.636787 2.57439
COMMENTS: According to the IEEE standard of C57.12.90-1980, Permissible limit of dissipation factor is <0.7% Correction Factor (K) : 1.75 for 45˚C REMARKS : Dissipation Factor value for HV-LV Winding exceeds the limit.
TESTED BY VOLTECH
NAME DESIGNATION SIGNATURE & DATE
BHARATH RAJ.C DIAGNOSTIC ENGINEER
WITNESS BY KPTL
WITNESS BY IMP POWER LTD
WITNESS BY HVPNL
TAN DELTA TEST REPORT FOR POWER TRANSFORMER
VEPL/RAMPS/D&RLA
DATE : 11/06/2019
CUSTOMER : M/s. KALPATARU POWER TRANSMISSION LTD PROJECT : 220/33 KV GIS S/S HVPNL
Page No: 02
Tan delta test for (LV-HV) WINDING: Winding
Mode
(LV)-(HV)
UST
(LV)-(E)
GSTg
(LV)-(HV+E)
GST
Applied Voltage (kV)
Measured Current(mA)
Capacitance (Pf)
Tan Delta (%)
Power (mW)
2 5 10 2 5 10 2 5 10
3.65462 9.15156 18.2939 9.04376 22.5596
5839.7 5839.21 5831.55 14420.8 14393.2
0.262772 0.262676 0.253288 0.345662 0.339185
0.019119 0.119845 0.462473 0.062334 0.381451
45.1842 12.7199 31.7457 63.3454
14402.7 20225.9 20227.3 20241.1
0.339369 0.316316 0.317079 0.315604
1.52998 0.080473 0.502482 1.9905
COMMENTS: According to the IEEE standard of C57.12.90-1980, Permissible limit of dissipation factor is <0.7%
TESTED BY VOLTECH
NAME DESIGNATION SIGNATURE & DATE
BHARATH RAJ.C DIAGNOSTIC ENGINEER
WITNESS BY KPTL
WITNESS BY IMP POWER LTD
WITNESS BY HVPNL
VEPL/RAMPS/D&RLA
DATE : 11/06/2019
CUSTOMER : M/s. KALPATARU POWER TRANSMISSION LTD PROJECT : 220/33 KV GIS S/S HVPNL
Page No: 02
1 .Equipment details: Make
: IMP POWERS LTD
Volts at No Load HV
: 220KV
Volts at No Load LV
: 33KV
Year of MFG
: 2017/18
Frequency
: 50 Hz
Vector Group
: YNyn0
Serial No
: PT-8079
2. Using Equipment Details Make
: Megger
Range
: 0-12Kv
Serial No
: 19781015
Calibration Due Date
: 23-08-2019
3. Atmospheric temperature: 45˚C
TESTED BY VOLTECH
NAME DESIGNATION SIGNATURE & DATE
BHARATH RAJ.C DIAGNOSTIC ENGINEER
WITNESS BY KPTL
WITNESS BY IMP POWER LTD
WITNESS BY HVPNL
TAN DELTA TEST REPORT FOR POWER TRANSFORMER
VEPL/RAMPS/D&RLA
DATE : 11/06/2019
CUSTOMER : M/s. KALPATARU POWER TRANSMISSION LTD PROJECT : 220/33 KV GIS S/S HVPNL
Page No: 02
Tan delta test for HV BUSHING: Serial No
Mode
R PH (37997010830)
UST
Y PH (37997010735)
UST
B PH (37997010857)
UST
Applied Voltage (kV)
Measured Current(mA)
Capacitance (Pf)
Tan Delta (%)
Power (mW)
2 5 10 2 5 10 2 5 10
0.257377 0.642927 1.28833 0.260185 0.64931
409.593 409.51 409.89 414.123 414.03
0.203129 0.202114 0.203462 0.223279 0.22297
0.001046 0.006495 0.026223 0.001162 0.007228
1.30047 0.250243 0.625882 1.25538
414.435 399.546 399.449 399.808
0.222284 0.203714 0.203797 0.205768
0.028884 0.001016 0.006361 0.025803
COMMENTS: According to the IEEE standard of C57.12.90-1980, Permissible limit of dissipation factor is <0.7%
TESTED BY VOLTECH
NAME DESIGNATION SIGNATURE & DATE
BHARATH RAJ.C DIAGNOSTIC ENGINEER
WITNESS BY KPTL
WITNESS BY IMP POWER LTD
WITNESS BY HVPNL
TAN DELTA TEST REPORT FOR POWER TRANSFORMER
VEPL/RAMPS/D&RLA
DATE : 11/06/2019
CUSTOMER : M/s. KALPATARU POWER TRANSMISSION LTD PROJECT : 220/33 KV GIS S/S HVPNL
Page No: 02
Tan delta test for (HV-LV) WINDING Winding
Mode
(HV)-(LV)
UST
(HV)-(E)
GSTg
(HV)-(LV+E)
GST
Applied Voltage (kV)
Measured Current(mA)
Capacitance (Pf)
Tan Delta (%)
Power (mW)
2 5 10 2 5 10 2 5 10
3.67173 9.12756 18.3157 2.63297 6.59906
5840.53 5839.51 5833.87 4204.82 4204
0.263335 0.262257 0.261452 1.59213 1.5945
0.019337 0.119031 0.477959 0.08346 0.525076
13.1833 6.29011 15.6782 31.5143
4198.9 10048.7 10028.9 10035.5
1.58871 0.818828 0.817023 0.81814
2.09055 0.102532 0.636787 2.57439
COMMENTS: According to the IEEE standard of C57.12.90-1980, Permissible limit of dissipation factor is <0.7% Correction Factor (K) : 1.75 for 45˚C REMARKS : Dissipation Factor value for HV-LV Winding exceeds the limit.
TESTED BY VOLTECH
NAME DESIGNATION SIGNATURE & DATE
BHARATH RAJ.C DIAGNOSTIC ENGINEER
WITNESS BY KPTL
WITNESS BY IMP POWER LTD
WITNESS BY HVPNL
TAN DELTA TEST REPORT FOR POWER TRANSFORMER
VEPL/RAMPS/D&RLA
DATE : 11/06/2019
CUSTOMER : M/s. KALPATARU POWER TRANSMISSION LTD PROJECT : 220/33 KV GIS S/S HVPNL
Page No: 02
Tan delta test for (LV-HV) WINDING: Winding
Mode
(LV)-(HV)
UST
(LV)-(E)
GSTg
(LV)-(HV+E)
GST
Applied Voltage (kV)
Measured Current(mA)
Capacitance (Pf)
Tan Delta (%)
Power (mW)
2 5 10 2 5 10 2 5 10
3.65462 9.15156 18.2939 9.04376 22.5596
5839.7 5839.21 5831.55 14420.8 14393.2
0.262772 0.262676 0.253288 0.345662 0.339185
0.019119 0.119845 0.462473 0.062334 0.381451
45.1842 12.7199 31.7457 63.3454
14402.7 20225.9 20227.3 20241.1
0.339369 0.316316 0.317079 0.315604
1.52998 0.080473 0.502482 1.9905
COMMENTS: According to the IEEE standard of C57.12.90-1980, Permissible limit of dissipation factor is <0.7%
TESTED BY VOLTECH
NAME DESIGNATION SIGNATURE & DATE
BHARATH RAJ.C DIAGNOSTIC ENGINEER
WITNESS BY KPTL
WITNESS BY IMP POWER LTD
WITNESS BY HVPNL
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