7/30/2019 NGR Winding Res. Inductance

1/3

SITE TEST REPORT

Replacement of 132/11kV Transformer, TransformerProtection Panels and 110V DC Batteries at W13 Substation

CONTRACT No. N-6399

Consultant ENERGOEquipment : 11kV Neutral Grounding Reactor T201

Main

Contractor Circuit: 11 KV NGR-1 Page 1 of 3

Test Report for Neutral Grounding Reactor

Name Plate Details-:-

Make Power Economy Rated Voltage 12kV

Reactor Type NGR Insulation Class 50/125 kV/KVP

Frequency 50 hz Rated Impedance 0.36 Ohm

Cooling Natural air cooled Thermal class of Insulation FThermal rating 15kA for 10 Sec Cont Rated Current 450A

Standard IEC 60289 Year of Manufacturer 2008

Application Outdoor Serial No 1381/70/08

No of Phases One Total Weight 375 kG

Tested by Witnessed by Approved byABB Transmission &

DistributionENERGO TRANSCO

Signature

Name Ganesan K Mohammad Rasheed

Date 18.02.2013 18.02.2013

7/30/2019 NGR Winding Res. Inductance

2/3

SITE TEST REPORT

Replacement of 132/11kV Transformer, TransformerProtection Panels and 110V DC Batteries at W13 Substation

CONTRACT No. N-6399

Consultant ENERGOEquipment : 11kV Neutral Grounding Reactor T201

Main

Contractor Circuit: 11 KV NGR-1 Page 2 of 3

1. INSULATION RESISTANCE TESTS (M):

DescriptionMeasured Insulation Resistance in M @ 60Sec Applied Voltage

Coil Earth 420 5000 V

2. MEASUREMENT OF DC WINDING RESISTANCE

Coil SerialNo.

Measured DCResistance@ 28.0 C

Calculated DCResistance@75 C ()

REMARKS

1381-70-08

29.597 m 34.886 m (Omicron Test sheetattached)

R = Ramb *(225+75) / (225+Tamb)

3. MEASUREMENT OF WINDING IMPEDANCE

COIL

SIERIALNO.

Measured DCImpedance

Given atName

plate

REMARKS

1381-70-08 363.44 m 0.36 (Omicron Test sheet attached)

4. INSULATION AND POWER FREQUENCY WITHSTAND TESTVoltage applied for 60 secbet terminal and earth

WITHSTANDSTATUS

INSULATION ESISTANCE (G)

AC 30kV 14mABefore Test After Test

420 M 500 M

Note: Insulation resistance measured by 5kV DC insulation tester.

Tested by Witnessed by Approved byABB Transmission &

DistributionENERGO TRANSCO

Signature

Name Ganesan K Mohammad Rasheed

Date 18.02.2013 18.02.2013

1. Testing instrument details

Particulars Make Type Sr. No. Cal. due date

InsulationResistance meter

Megger BM11D AETAD/ST/00203 27.11.2013

CPC100 Omicron CPC100 AETAD/ST/13002 13.05.2013

HV Test Phenix BK130 AETAD/ST/00103 16.01.2014

7/30/2019 NGR Winding Res. Inductance

3/3

SITE TEST REPORT

Replacement of 132/11kV Transformer, TransformerProtection Panels and 110V DC Batteries at W13 Substation

CONTRACT No. N-6399

Consultant ENERGOEquipment : 11kV Neutral Grounding Reactor T201

Main

Contractor Circuit: 11 KV NGR-1 Page 3 of 3

Remarks:- OK

Tested by Witnessed by Approved byABB Transmission &

DistributionENERGO TRANSCO

Signature

Name Ganesan K Mohammad Rasheed

Date 18.02.2013 18.02.2013