Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 1 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed Permanent Facility

1 ELECTRICAL- 1. Electrical and Test of Repeatability of IS 13779:1999 up to 300V1mA to ELECTRICAL Electronic (Static) errors (Reaffirmed 2014) CI. 120A45Hz to 55HzP.F. INDICATING & Energy Meter 2. No. 12.17 IS +1 to -1 RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 12.16 CBIP Publication No.: 304:2008 CI. No. 5.6.9 CBIP Publication No.: 325:2015 Cl. No. 5.6.9 Cl. No. 5.6.7 of IS 15884:2010 Cl. No. 6.12 of IS 16444 (Part 1) : 2015 Cl. No. 6.12 of IS 16444 (Part 2) : 2017: 2017

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 2 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

2 ELECTRICAL- 1. Electrical and Test of influence CI. No. 12.11 Of IS up to 300V1mA to ELECTRICAL Electronic (Static) Quantitya) Frequency 13779:1999 120A45 Hz to 55HzPF. INDICATING & Energy Meter 2. Variationb) Voltage (Reaffirmed 2014) CI. +1 to -167mT, 0.2T, RECORDING Prepayment/ Smart Variationc) DC No. 12.10 Of IS 0.27T & 0.5T0.5mT, INSTRUMENTS Meters Magnetic induction of 14697:1999 10mT, & 0.2T0.5T & external origind) AC (Reaffirmed 2014) CI. 0.27T Magnetic induction of No. 5.6.2 Of CBIP external origine) Publication No.: Magnetic induction of 304:2008 Cl. No. 5.6.2 Permanent Magnet Of CBIP Publication No.: 325:2015 IEC 62052-11:2016 Cl. No. 8.2 of IEC 62053- 21:2016 Cl. No. 8.2 of IEC 62053-22:2016 Cl. No. 8.2 of IEC 62053- 23:2016, Cl. No. 8.3 of IEC 62053-24:2016, Cl. No. 4.6.2 of IS 15884:2010 Cl. No. 6.12 of IS 16444 (Part 1) : 2015 Cl. No. 6.12 of IS 16444 (Part 2) : 2017 Cl. No. 8 of IEC 62055-31:2005: 2005

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 3 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

3 ELECTRICAL- 1. Electrical and Test of limits of errors/ IS 13779:1999 up to 300V,1mA to ELECTRICAL Electronic (Static) Test of Accuracy (Reaffirmed 2014) CI. 120A45Hz to 55HzP.F INDICATING & Energy Meter 2. requirement No. 11.1 IS +1 to -1 RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 11.1 CBIP Publication No.: 304:2008 CI. No. 5.6.8 CBIP Publication No.: 325:2015 Cl. No. 4.6.2 IEC 62052-11:2016 IEC 62053-21:2016, Cl. No. 8.1 IEC 62053- 22:2016, Cl. No. 8.1 IEC 62053-23:2016, Cl. No. 8.1 IEC 62053- 24:2016, Cl. No. 8.2 IEC 62055-31:2005, Cl. No. 8.0 IS 13875 (Part 1 & 3):1993 Cl. No. 4.6.1 of IS 15884:2010 Cl. No. 6.12 of IS 16444 (Part 1) : 2015 Cl. No. 6.12 of IS 16444 (Part 2) : 2017 Cl: 2005

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 4 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

4 ELECTRICAL- 1. Electrical and Test of Meter Constant IS 13779:1999 up to 300V1mA to ELECTRICAL Electronic (Static) (Reaffirmed 2014) CI. 120A45Hz to 55HzP.F: INDICATING & Energy Meter 2. No. 12.15 IS +1 to -1 RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 12.14 CBIP Publication No.: 304:2008 CI. No. 5.6.6 CBIP Publication No.: 325:2015 Cl. No. 5.6.6 IEC 62052-11:2016 IEC 62053-21:2016, Cl. No. 8.4 IEC 62053- 22:2016, Cl. No. 8.4 IEC 62053-23:2016, Cl. No. 8.4 IEC 62053- 24:2016, Cl. No. 8.5 Cl. No. 5.6.5 of IS 15884:2010 Cl. No. 6.12 of IS 16444 (Part 1) : 2015 Cl. No. 8 of IEC 62055-31:2005 Cl. No. 6.12 of IS 16444 (Part 2) : 2017: 2017

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 5 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

5 ELECTRICAL- 1. Electrical and Test of No Load IS 13779:1999 up to 300V45Hz to ELECTRICAL Electronic (Static) Condition (Reaffirmed 2014) CI. 55HzPF.; +1 to -1 INDICATING & Energy Meter 2. No. 12.13 IS RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 12.12 CBIP Publication No.: 304:2008 CI. No. 5.6.4 CBIP Publication No.: 325:2015 Cl. No. 5.6.4 IEC 62052-11:2016 IEC 62053-21:2016, Cl. No. 8.3 IEC 62053- 22:2016, Cl. No. 8.3 IEC 62053-23:2016, Cl. No. 8.3 IEC 62053- 24:2016, Cl. No. 8.4 Cl. No. 5.6.3 of IS 15884:2010 Cl. No. 6.12 of IS 16444 (Part 1) : 2015 Cl. No. 6.12 of IS 16444 (Part 2) : 2017 Cl. No. 8 of IEC 62055-31:2005: 2005

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 6 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

6 ELECTRICAL- 1. Electrical and Test of Power IS 13779:1999 up to 300V1mA to ELECTRICAL Electronic (Static) Consumption Test (Reaffirmed 2014) CI. 120A,45Hz to 55HzP.F. INDICATING & Energy Meter 2. No. 12.7.1 IS +1 to -1 RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 12.7.1 CBIP Publication No.: 304:2008 CI. No. 5.4.1 CBIP Publication No.: 325:2015 Cl. No. 5.4.1 IEC 62052-11:2016 IEC 62053-21:2016, Cl. No. 7.1 IEC 62053- 22:2016, Cl. No. 7.1 IEC 62053-23:2016, Cl. No. 7.1 IEC 62053- 24:2016, Cl. No. 7.2 Cl. No. 5.4.1 of IS 15884:2010 Cl. No. 6.10.1 of IS 16444 (Part 1) : 2015 Cl. No. 6.10.1 of IS 16444 (Part 2) : 2017 Cl. No. 7.3 of IEC 62055- 31:2005: 2005

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 7 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

7 ELECTRICAL- 1. Electrical and AC High Voltage Test IS 13779:1999 1 KV to 5 KV ELECTRICAL Electronic (Static) (Reaffirmed 2014) CI. INDICATING & Energy Meter2. No. 12.7.6.3 IS RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No.12.7.6.3 CBIP Publication No.: 304:2008 CI. No. 5.4.6.3 CBIP Publication No.: 325:2015 Cl. No. 5.4.6.3 IEC 62052- 11:2016, Cl. No. 7.3 IEC 62052-31:2015, Cl. No. 6.10 IEC 62053- 21:2016, Cl. No. 7.4 IEC 62053-22:2016, Cl. No. 7.4 IEC 62053- 23:2016, Cl. No. 7.4 IEC 62053-24:2016, Cl. No. 7.5 Cl. No. 5.4.6.3 of IS 15884:2010 Cl. No. 6.10.6 of IS 16444 (Part 1) : 2015 Cl. No. 6.10.6 of IS 16444 (Part 2) : 20: 2005

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 8 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

8 ELECTRICAL- 1. Electrical and Insulation Resistance/ IS 13779:1999 up to ELECTRICAL Electronic (Static) insulation Test (Reaffirmed 2014) CI. 200Mohm500±50V DC INDICATING & Energy Meter2. No. 12.7.6.4 IS RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 12.7.6.4 CBIP Publication No.: 304:2008 CI. No. 5.4.6.4 CBIP Publication No.: 325:2015 Cl. No. 5.4.6.4 Cl. No. 5.4.6.4 of IS 15884:2010 Cl. No. 6.10.6 of IS 16444 (Part 1) : 2015 Cl. No. 6.10.6 of IS 16444 (Part 2) : 2017: 2017

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 9 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

9 ELECTRICAL- IS 13779:1999 Test of Starting IS 13779:1999 up to 300V1mA to ELECTRICAL (Reaffirmed 2014)CI. Condition (Reaffirmed 2014) CI. 120A45 Hz to INDICATING & No. 12.15IS No. 12.14 IS 55HzPF:- +1 to -1 RECORDING 14697:1999 14697:1999 INSTRUMENTS (Reaffirmed 2014)CI. (Reaffirmed 2014) CI. No. 12.14CBIP No. 12.13 CBIP Publication No.: Publication No.: 304:2008CI. No. 304:2008 CI. No. 5.6.5 5.6.6CBIP Publication CBIP Publication No.: No.: 325:2015Cl. No. 325:2015 Cl. No. 5.6.5 5.6.6IEC 62052- IEC 62052-11:2016 11:2016IEC 62053- IEC 62053-21:2016, Cl. 21:2016, Cl. No. No. 8.3 IEC 62053- 8.4IEC 62053-22:2016, 22:2016, Cl. No. 8.3 Cl. No. 8.4IEC 62053- IEC 62053-23:2016, Cl. 23:2016, Cl. No. No. 8.3 IEC 62053- 8.4IEC 62053-24:2016, 24:2016, Cl. No. 8.4 Cl. Cl. No. 8.5Cl. No. 5.6.5 No. 5.6.4 of IS of IS 15884:2010Cl. 15884:2010 Cl. No. No. 6.12 of IS 16444 6.12 of IS 16444 (Part (Part 1) : 2015Cl. No. 8 1) : 2015 Cl. No. 6.12 of IEC 62055- of IS 16444 (Part 2) : 31:2005Cl. No. 6.12 of 2017 Cl. No. 8 of IEC IS 16444 (Part 2) : 62055-31:2005: 2005 2017

10 ELECTRICAL- Liquid Dielectric Resistivity Clause No. 5.6 of IS 1 109Ohm-cm to 1 INSULATING Material 1866 2017: 2017 1015Ohm-cm MATERIALS & INSULATORS

11 ELECTRICAL- Liquid Dielectric Breakdown Voltage IEC 61156: 2018 1 kV to 100 kV INSULATING Material (Mineral MATERIALS & Insulating Oil) INSULATORS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 10 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

12 ELECTRICAL- Liquid Dielectric Breakdown Voltage Clause No. 5.3 of IS 1 kV to 100 kV INSULATING Material (Mineral 1866: 2017 MATERIALS & Insulating Oils) INSULATORS

13 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 10593: 2018 Oxygen (50-50000)µl/l INSULATING Material (Mineral MATERIALS & Insulating Oils) INSULATORS

14 ELECTRICAL- Liquid Dielectric Flash Point ISO 2719: 2016 40 Degree Centigrade INSULATING Material (Mineral to 370 Degree MATERIALS & Insulating Oils) Centigrade INSULATORS

15 ELECTRICAL- Liquid Dielectric Flash Point Clause No. 7.9 of IS 40 Degree Centigrade INSULATING Material (Mineral 1866 2000 Amend 1 to 370 Degree MATERIALS & Insulating Oils) (2006-08): 2008 Centigrade INSULATORS

16 ELECTRICAL- Liquid Dielectric Dissolved Gas analysis IS 6855: 2017 Qualitative(Method of INSULATING Materials ( Mineral Sampling Insulating MATERIALS & Insulating Oils) Liquids) INSULATORS

17 ELECTRICAL- Liquid Dielectric Acidity (Neutralization IEC-62021-1-2003: 0.0001 mg of KOH/gm INSULATING Materials (Mineral Value) 2003 of oil to 10 mg of MATERIALS & Insulating Oils) KOH/gm of oil INSULATORS

18 ELECTRICAL- Liquid Dielectric Acidity (Neutralization IEC 62021-2-2007: 0.0001 mg of KOH/gm INSULATING Materials (Mineral Value) 2007 of oil to 10 mg of MATERIALS & Insulating Oils) KOH/gm of oil INSULATORS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 11 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

19 ELECTRICAL- Liquid Dielectric Acidity (Neutralization Clause No. 5.5 of IS 0.0001 mg of KOH/gm INSULATING Materials (Mineral Value) 1866: 2017 of oil to 10 mg of MATERIALS & Insulating Oils) KOH/gm of oil INSULATORS

20 ELECTRICAL- Liquid Dielectric Acidity (Neutralization IS 1448 (P-2): 2007 0.0001 mg of KOH/gm INSULATING Materials (Mineral Value) of oil to 10 mg of MATERIALS & Insulating Oils) KOH/gm of oil INSULATORS

21 ELECTRICAL- Liquid Dielectric Acidity (Neutralization Clause No. 5.5 of IS 0.0001 mg of KOH/gm INSULATING Materials (Mineral Value) 1866 2017: 2017 of oil to 10 mg of MATERIALS & Insulating Oils) KOH/gm of oil INSULATORS

22 ELECTRICAL- Liquid Dielectric Appearance ISO 2049: 1996 Qualitative INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

23 ELECTRICAL- Liquid Dielectric Appearance Clause No. 5.2 of IS Qualitative INSULATING Materials (Mineral 1866 2017: 2017 MATERIALS & Insulating Oils) INSULATORS

24 ELECTRICAL- Liquid Dielectric Appearance IS 335 : 2018 Qualitative INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

25 ELECTRICAL- Liquid Dielectric Breakdown Voltage IS 6792: 2017 1 kV to 100 kV INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 12 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

26 ELECTRICAL- Liquid Dielectric Breakdown Voltage Clause No. 5.3 of IS 1 kV to 100 kV INSULATING Materials (Mineral 1866:2017: 2017 MATERIALS & Insulating Oils) INSULATORS

27 ELECTRICAL- Liquid Dielectric Colour and IS 1866 2017 clause Qualitative INSULATING Materials (Mineral Appearance 5.2: 2017 MATERIALS & Insulating Oils) INSULATORS

28 ELECTRICAL- Liquid Dielectric Density @ 15 Degree IS 1448 (P 16): 2014 800 kg/m³ to 900 kg/m³ INSULATING Materials (Mineral Centigrade MATERIALS & Insulating Oils) INSULATORS

29 ELECTRICAL- Liquid Dielectric Density @15 Degree Clause No. 7.11 of IS 800 kg/m³ to 900 kg/m³ INSULATING Materials (Mineral Centigrade 1866 2000 Amendment MATERIALS & Insulating Oils) 1. *2006-08): 2008 INSULATORS

30 ELECTRICAL- Liquid Dielectric Density @15 Degree ISO 3675: 1998 800 kg/m³ to 900 kg/m³ INSULATING Materials (Mineral Centigrade MATERIALS & Insulating Oils) INSULATORS

31 ELECTRICAL- Liquid Dielectric Density @15 Degree Clause No. 5.14 of IS 800 kg/m³ to 900 kg/m³ INSULATING Materials (Mineral Centigrade 1866-2017: 2017 MATERIALS & Insulating Oils) INSULATORS

32 ELECTRICAL- Liquid Dielectric Dielectric Dissipation IEC 60247: 2004 0.0000002 to 9.99 INSULATING Materials (Mineral factor MATERIALS & Insulating Oils) INSULATORS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 13 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

33 ELECTRICAL- Liquid Dielectric Dielectric Dissipation Clause No. 5.6 of IS 0.0000002 to 9.99 INSULATING Materials (Mineral Factor 1866: 2017 MATERIALS & Insulating Oils) INSULATORS

34 ELECTRICAL- Liquid Dielectric Dielectric Dissipation IS 6262 1971 RA 2001: 0.0000002 to 9.99 INSULATING Materials (Mineral Factor 2001 MATERIALS & Insulating Oils) INSULATORS

35 ELECTRICAL- Liquid Dielectric Dielectric Dissipation Clause No. 5.6 of IS 0.0000002 to 9.99 INSULATING Materials (mineral factor 1866-2017: 2017 MATERIALS & Insulating Oils) INSULATORS

36 ELECTRICAL- Liquid Dielectric Dielectric Dissipation Clause No. 5.6 of IS 1 109Ohm-cm to 1 INSULATING Materials (Mineral factor and Resistivity 1866 2017: 2017 1015Ohm-cm MATERIALS & Insulating Oils) INSULATORS

37 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 9434 1992 RA 2003: Hydrogen (5-5000) µl/l INSULATING Materials (Mineral 2003 MATERIALS & Insulating Oils) INSULATORS

38 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 9434 1992 RA 2003: Oxygen (50-50000)µl/l INSULATING Materials (Mineral 2003 MATERIALS & Insulating Oils) INSULATORS

39 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 9434 1992 RA 2003: Nitrogen (50-50000) µl/l INSULATING Materials (Mineral 2003 MATERIALS & Insulating Oils) INSULATORS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 14 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

40 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 9434 1992 RA 2003: Methane (1-5000)µl/l INSULATING Materials (Mineral 2003 MATERIALS & Insulating Oils) INSULATORS

41 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 9434 1992 RA 2003: Ethene (1-5000)µl/l INSULATING Materials (Mineral 2003 MATERIALS & Insulating Oils) INSULATORS

42 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 9434 1992 RA 2003: Ethane (1-5000)µl/l INSULATING Materials (Mineral 2003 MATERIALS & Insulating Oils) INSULATORS

43 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 9434 1992 RA 2003: Ethyne (1-5000)µl/l INSULATING Materials (Mineral 2003 MATERIALS & Insulating Oils) INSULATORS

44 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 9434 1992 RA 2003: Propane plus Propene INSULATING Materials (Mineral 2003 (1-5000)µl/l MATERIALS & Insulating Oils) INSULATORS

45 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 10593: 2018 Hydrogen (5-5000)µl/l INSULATING Materials (Mineral MATERIALS & insulating Oils) INSULATORS

46 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 10593: 2018 Methane (1-5000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 15 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

47 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 10593: 2018 Ethene (1-5000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

48 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 10593: 2018 Ethane (1-5000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

49 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 10593: 2018 Acetylene (1-5000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

50 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 10593: 2018 Propene plus Propane INSULATING Materials (Mineral (1-5000)µl/l MATERIALS & Insulating Oils) INSULATORS

51 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 10593: 2018 Carbon Dioxide (25- INSULATING Materials (Mineral 25000)µl/l MATERIALS & Insulating Oils) INSULATORS

52 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 10593: 2018 Carbon Monoxide (25- INSULATING Materials (Mineral 5000)µl/l MATERIALS & Insulating Oils) INSULATORS

53 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 9434 1992 RA 2003: Carbon Di Oxide (25- INSULATING Materials (Mineral 2003 25000)µl/l MATERIALS & Insulating Oils) INSULATORS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 16 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

54 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IS 9434 1992 RA 2003: Carbon Monoxide ( 25- INSULATING Materials (Mineral 2003 5000)µl/l MATERIALS & Insulating Oils) INSULATORS

55 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IEC 60599: 2015 Hydrogen (5-5000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

56 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IEC 60599: 2015 Oxygen (50-50000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

57 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IEC 60599: 2015 Nitrogen (50-50000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

58 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IEC 60599: 2015 Methane (1-5000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

59 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IEC 60599: 2015 Ethene (1-5000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

60 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IEC 60599: 2015 Ethane (1-5000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 17 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

61 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IEC 60599: 2015 Acetylene (1-5000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

62 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IEC 60599: 2015 Propene plus Propane INSULATING Materials (Mineral (1-5000)µl/l MATERIALS & Insulating Oils) INSULATORS

63 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IEC 60599: 2015 Carbon Di Oxide (25- INSULATING Materials (Mineral 25000)µl/l MATERIALS & Insulating Oils) INSULATORS

64 ELECTRICAL- Liquid Dielectric Dissolved Gas Analysis IEC 60599: 2015 Carbon Monoxide (25- INSULATING Materials (Mineral 5000)µl/l MATERIALS & Insulating Oils) INSULATORS

65 ELECTRICAL- Liquid Dielectric Dissolved GAs IEC 60567: 2011 Qualitative(Oil filled INSULATING Materials (Mineral Analysis Electrical Equipment- MATERIALS & Insulating Oils) Sampling of Gases and INSULATORS analysis of free and dissolved gases)

66 ELECTRICAL- Liquid Dielectric Flash Point Clause No. 5.11 of IS 40 Degree Centigrade INSULATING Materials (Mineral 1866: 2017 to 370 Degree MATERIALS & Insulating Oils) Centigrade INSULATORS

67 ELECTRICAL- Liquid Dielectric Flash Point IS 1448 (P 21): 2012 40 Degree Centigrade INSULATING Materials (Mineral to 370 Degree MATERIALS & Insulating Oils) Centigrade INSULATORS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 18 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

68 ELECTRICAL- Liquid Dielectric Interfacial Tension ASTM D971: 2012 1 mN/m to 90 mN/m INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

69 ELECTRICAL- Liquid Dielectric Interfacial Tension Clause No. 5.9 of IS 1 mN/m to 90 mN/m INSULATING Materials (Mineral 1866: 2017 MATERIALS & Insulating Oils) INSULATORS

70 ELECTRICAL- Liquid Dielectric Interfacial Tension IS 6104 1971 1 mN/m to 90 mN/m INSULATING Materials (Mineral Amendment 1 RA MATERIALS & Insulating Oils) 2001: 2001 INSULATORS

71 ELECTRICAL- Liquid Dielectric Interfacial Tension Clause No. 5.9 of IS 1 mN/m to 90 mN/m INSULATING Materials (Mineral 2017: 2017 MATERIALS & Insulating Oils) INSULATORS

72 ELECTRICAL- Liquid Dielectric Resistivity IEC 60247: 2004 1 109Ohm-cm to 1 INSULATING Materials (Mineral 1015Ohm-cm MATERIALS & Insulating Oils) INSULATORS

73 ELECTRICAL- Liquid Dielectric Resistivity IS 6103 1971 RA 2001: 1 109Ohm-cm to 1 INSULATING Materials (Mineral 2001 1015Ohm-cm MATERIALS & Insulating Oils) INSULATORS

74 ELECTRICAL- Liquid Dielectric Sampling IEC 60475: 2011 Qualitative(Method of INSULATING Materials (Mineral sampling Insulating MATERIALS & Insulating Oils) Liquids) INSULATORS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 19 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

75 ELECTRICAL- Liquid Dielectric Sediment Sludge Clause No. 5.8 of IS 0.00001 % wt. to 1 % INSULATING Materials (Mineral 1866:2017 (Annexure- wt. MATERIALS & Insulating Oils) C): 2017 INSULATORS

76 ELECTRICAL- Liquid Dielectric Sediment Sludge Clause No. 5.8 of IS 0.00001 % wt. to 1 % INSULATING Materials (Mineral 1866 2017: 2017 wt. MATERIALS & Insulating Oils) INSULATORS

77 ELECTRICAL- Liquid Dielectric Sludge IS 335: 2018 0.00001 % wt. to 1 % INSULATING Materials (Mineral wt. MATERIALS & Insulating Oils) INSULATORS

78 ELECTRICAL- Liquid Dielectric Water Content IEC 60814: 1997 1 mg/kg to 1200 mg/kg INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

79 ELECTRICAL- Liquid Dielectric Water Content Clause No. 5.4 of IS 1 mg/kg to 1200 mg/kg INSULATING Materials (Mineral 1866: 2017 MATERIALS & Insulating Oils) INSULATORS

80 ELECTRICAL- Liquid Dielectric Water Content IS 13567 1992 RA 1 mg/kg to 1200 mg/kg INSULATING Materials (Mineral 1997: 1997 MATERIALS & Insulating Oils) INSULATORS

81 ELECTRICAL- Liquid Dielectric Water Content Clause No. 5.4 of IS 1 mg/kg to 1200 mg/kg INSULATING Materials (Mineral 1866 2017: 2017 MATERIALS & Insulating Oils) INSULATORS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 20 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

82 ELECTRICAL- Liquid Insulating Dissolved Gas Analysis IS 10593: 2018 Nitrogen (50-50000)µl/l INSULATING Materials (Mineral MATERIALS & Insulating Oils) INSULATORS

83 ELECTRICAL- Transformer Oil Carbon Type PNA IS 13155:1991 : 2016 CA-0.1 to 20%, CP- INSULATING Analysis 20% to 80%, CN-20% MATERIALS & to 80% INSULATORS

84 ELECTRICAL- Transformer oil Color and Appearance IEC:60296-2012, Qualitative INSULATING IEC:60422-2013, MATERIALS & IS:1866-2000,IS1866- INSULATORS 2017,IS335-2018, ISO:2049-1996, ASTM D 1500: 2017

85 ELECTRICAL- Transformer Oil Dissolved Gas Analysis IEC 60567:2011, IEC H2 (1) µl/lO2 (50 ) INSULATING 60599: 2015 µl/lN2 (50) µl/lCH4 (5) MATERIALS & µl/lC2H4 (5) µl/lC2H6 INSULATORS (5) µl/lC2H2 (5) µl/lC3H6+C3H8 (5) µl/lCO2 (25) µl/lCO (25) µl/l

86 ELECTRICAL- Transformer Oil Inhibitors IEC60666: 2010 0.02% to 1% INSULATING MATERIALS & INSULATORS

87 ELECTRICAL- Transformer Oil Inhibitors IS13631: 2017 0.02% to 1% INSULATING MATERIALS & INSULATORS

88 ELECTRICAL- CRGO Strips & Sheet Adherence Test IS 649: 1997 Qualitative MAGNETIC MATERIALS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 21 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

89 ELECTRICAL- CRGO Strips & Sheet Adherence test IS 649: 1997 Qualitative MAGNETIC MATERIALS

90 ELECTRICAL- CRGO Strips & Sheet Ductility/Bend test IS 649: 1997 Qualitative MAGNETIC MATERIALS

91 ELECTRICAL- CRGO Strips & Sheet Ductility/Bend test IS 3024: 2015 Qualitative MAGNETIC MATERIALS

92 ELECTRICAL- CRGO Strips & Sheet Ductility/Bend test IEC 60404-Pt.8-7: 2008 Qualitative MAGNETIC MATERIALS

93 ELECTRICAL- CRGO Strips & Sheet Ductility/Bend test ISO 7799: 1985 Qualitative MAGNETIC MATERIALS

94 ELECTRICAL- CRGO Strips & Sheet Lamination Thickness IS 3024: 2015 0.001 mm to 2 mm MAGNETIC MATERIALS

95 ELECTRICAL- CRGO Strips & Sheet Lamination Thickness IEC 60404-Pt.8-7: 2008 0.001 mm to 2 mm MAGNETIC MATERIALS

96 ELECTRICAL- CRGOStrips & Sheet Lamination Thickness IS 649: 1997 0.001 mm to 2 mm MAGNETIC MATERIALS

97 ELECTRICAL- CRGOStrips & Sheet Magnetic IS 649: 1997 800 A/m to 10000 A/m MAGNETIC Polarization/A.C. MATERIALS Magnetization / Magnetic Permeability

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 22 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

98 ELECTRICAL- CRGOStrips & Sheet Specific Core Loss IS 649: 1997 1 T to 2 T MAGNETIC Measurement Test MATERIALS After Accelerated Ageing Test / Specific Total Loss Measurement Test After Accelerated Ageing Test

99 ELECTRICAL- CRGOStrips & Sheet Specific Iron / Core IS 649: 1997 1 T to 2 T MAGNETIC Loss Measurement / MATERIALS Specific Total Loss Measurement

100 ELECTRICAL- CRGOStrips & Sheet Specific Iron / Core IS 3024: 2015 1 T to 2 T MAGNETIC Loss Measurement / MATERIALS Specific Total Loss Measurement

101 ELECTRICAL- CRGOStrips & Sheet Specific Iron / Core IEC 60404-Pt.2: 2008 1 T to 2 T MAGNETIC Loss Measurement / MATERIALS Specific Total Loss Measurement

102 ELECTRICAL- CRGOStrips & Sheet Specific Iron / Core IEC 60404-Pt.8-7: 2008 1 T to 2 T MAGNETIC Loss Measurement / MATERIALS Specific Total Loss Measurement

103 ELECTRICAL- CRGOStrips & Sheet Specific Iron / Core IEC 60404-Pt.3: 2010 1 T to 2 T MAGNETIC Loss Measurement / MATERIALS Specific Total Loss Measurement

104 ELECTRICAL- CRGOStrips & Sheet Specific Iron / Core ASTM A343: 2014 1 T to 2 T MAGNETIC Loss Measurement / MATERIALS Specific Total Loss Measurement

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 23 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

105 ELECTRICAL- CRGOStrips & Sheet Stacking Factor IS 649: 1997 1 kN to 9 kN MAGNETIC MATERIALS

106 ELECTRICAL- CRGOStrips & Sheet Stacking Factor IS 3024: 2015 1 kN to 9 kN MAGNETIC MATERIALS

107 ELECTRICAL- CRGOStrips & Sheet Stacking Factor IEC 60404-Pt.8: 2008 1 kN to 9 kN MAGNETIC MATERIALS

108 ELECTRICAL- CRGOStrips & Sheet Stacking Factor IEC 60404-Pt.13: 2018 1 kN to 9 kN MAGNETIC MATERIALS

109 ELECTRICAL- CRGOStrips & Sheet Stacking Factor ASTM A719: 2014 1 kN to 9 kN MAGNETIC MATERIALS

110 ELECTRICAL- CRGOStrips & Sheet Surface Insulation IS 649: 1997 0.2 Volts to 2 Volts MAGNETIC Resistivity MATERIALS

111 ELECTRICAL- CRGOStrips & Sheet Surface Insulation IS 3024: 2015 0.2 Amp to 1.0 Amp MAGNETIC Resistivity MATERIALS

112 ELECTRICAL- CRGOStrips & Sheet Surface Insulation IEC 60404-Pt.8-7: 2008 10 psi to 1000 psi MAGNETIC Resistivity MATERIALS

113 ELECTRICAL- CRGOStrips & Sheet Surface Insulation IEC 60404- Pt.11: 2012 0.2 Volts to 2 Volts MAGNETIC Resistivity MATERIALS

114 ELECTRICAL- CRGOStrips & Sheet Surface Insulation ASTM A717: 2018 0.2 Amp to 1.0 Amp MAGNETIC Resistivity MATERIALS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 24 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

115 ELECTRICAL- CRGOStrips & Sheet Magnetic IS 3024: 2015 800 A/m to 10000 A/m MAGNETIC Polarization/A.C. MATERIALS Magnetization / Magnetic Permeability

116 ELECTRICAL- CRGOStrips & Sheet Magnetic IEC 60404- Pt.2: 2008 800 A/m to 10000 A/m MAGNETIC Polarization/A.C. MATERIALS Magnetization / Magnetic Permeability

117 ELECTRICAL- CRGOStrips & Sheet Magnetic IEC 60404-Pt.8-7: 2008 800 A/m to 10000 A/m MAGNETIC Polarization/A.C. MATERIALS Magnetization / Magnetic Permeability

118 ELECTRICAL- CRGOStrips & Sheet Magnetic IEC 60404- Pt.3: 2010 800 A/m to 10000 A/m MAGNETIC Polarization/A.C. MATERIALS Magnetization / Magnetic Permeability

119 ELECTRICAL- CRGOStrips & Sheet Magnetic ASTM A343: 2014 800 A/m to 10000 A/m MAGNETIC Polarization/A.C. MATERIALS Magnetization / Magnetic Permeability

120 ELECTRICAL- CRGOStrips & Sheet Specific Core Loss IS 3024: 2015 1 T to 2 T MAGNETIC Measurement Test MATERIALS After Accelerated Ageing Test / Specific Total Loss Measurement Test After Accelerated Ageing Test

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 25 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

121 ELECTRICAL- CRGOStrips & Sheet Specific Core Loss IEC 60404-Pt.8-7: 2008 1 T to 2 T MAGNETIC Measurement Test MATERIALS After Accelerated Ageing Test / Specific Total Loss Measurement Test After Accelerated Ageing Test

122 ELECTRICAL- Current Transformers Determination of Cl. No. 6.2 of IS 2705 100 µW to 1 kW TRANSMISSION LINE secondary winding (Part-4): 1992 EQUIPMENT & resistance. ACCESSORIES

123 ELECTRICAL- Current Transformers Determination of Cl. No. 7.3.201 of IEC 100 µW to 1 kW TRANSMISSION LINE secondary winding 61869-2: 2012 EQUIPMENT & resistance. ACCESSORIES

124 ELECTRICAL- Current Transformers Determination of Cl. No. 7.3.201 of IS 100 µW to 1 kW TRANSMISSION LINE secondary winding 16227-2: 2016 EQUIPMENT & resistance. ACCESSORIES

125 ELECTRICAL- Current Transformers Determination of IS 16227-4: 2015 100 µW to 1 kW TRANSMISSION LINE secondary winding EQUIPMENT & resistance. ACCESSORIES

126 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.1.2 of IS 2705 1 V to 750 V TRANSMISSION LINE Instrument security (Part-2): 1992 EQUIPMENT & factor of measuring ACCESSORIES current transformer

127 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.1.2 of IS 2705 1 mA to 6 A TRANSMISSION LINE Instrument security (Part-2): 1992 EQUIPMENT & factor of measuring ACCESSORIES current transformer

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 26 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

128 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.2.6.202 & 1 V to 750 V TRANSMISSION LINE Instrument security 7.5.2 of IEC 61869-2: EQUIPMENT & factor of measuring 2012 ACCESSORIES current transformer

129 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.2.6.202 & 1 mA to 6 A TRANSMISSION LINE Instrument security 7.5.2 of IEC 61869-2: EQUIPMENT & factor of measuring 2012 ACCESSORIES current transformer

130 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.2.6.202 & 1 V to 750 V TRANSMISSION LINE Instrument security 7.5.2 of IS 16227-2: EQUIPMENT & factor of measuring 2016 ACCESSORIES current transformer

131 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.2.6.202 & 1 mA to 6 A TRANSMISSION LINE Instrument security 7.5.2 of IS 16227-2: EQUIPMENT & factor of measuring 2016 ACCESSORIES current transformer

132 ELECTRICAL- Current Transformers Determination of the IS 16227-4: 2015 1 V to 750 V TRANSMISSION LINE Instrument security EQUIPMENT & factor of measuring ACCESSORIES current transformer

133 ELECTRICAL- Current Transformers Determination of the IS 16227-4: 2015 1 mA to 6 A TRANSMISSION LINE Instrument security EQUIPMENT & factor of measuring ACCESSORIES current transformer

134 ELECTRICAL- Current Transformers Power frequency Cl. No. 9.3 & 9.4 of IS 0 kVac to 28 kVac TRANSMISSION LINE voltage withstand test. 2705 (Part-1): 1992 EQUIPMENT & ACCESSORIES

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 27 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

135 ELECTRICAL- Current Transformers Power frequency Cl. No, 7.3.1, 7.3.3 & 0 kVac to 28 kVac TRANSMISSION LINE voltage withstand test. 7.3.4 of IEC 61869-1: EQUIPMENT & 2007 ACCESSORIES

136 ELECTRICAL- Current Transformers Power frequency Cl. No, 7.3.1, 7.3.3 & 0 kVac to 28 kVac TRANSMISSION LINE voltage withstand test. 7.3.4 of IEC 61869-2: EQUIPMENT & 2012 ACCESSORIES

137 ELECTRICAL- Current Transformers Power frequency Cl. No, 7.3.1, 7.3.3 & 0 kVac to 28 kVac TRANSMISSION LINE voltage withstand test. 7.3.4 of IS 16227-2 : EQUIPMENT & 2016 ACCESSORIES

138 ELECTRICAL- Current Transformers Power frequency IS 16227-4 : 2015 0 kVac to 28 kVac TRANSMISSION LINE voltage withstand test. EQUIPMENT & ACCESSORIES

139 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.1.1 & 7.2.1 of 2.5 A to 3200 A TRANSMISSION LINE IS 2705 (Part-2 & Part- EQUIPMENT & 3): 1992 ACCESSORIES

140 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.1.1 & 7.2.1 of 2.5 A to 3200 A TRANSMISSION LINE IS 2705 (Part-2 & Part- EQUIPMENT & 3) : 1992 ACCESSORIES

141 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IEC 61869-1: 2007 EQUIPMENT & ACCESSORIES

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 28 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

142 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IEC 61869-1: 2007 EQUIPMENT & ACCESSORIES

143 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IEC 61869-2 : 2012 EQUIPMENT & ACCESSORIES

144 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IEC 61869-2 : 2012 EQUIPMENT & ACCESSORIES

145 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IS 16227-2: 2016 EQUIPMENT & ACCESSORIES

146 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IS 16227-2: 2016 EQUIPMENT & ACCESSORIES

147 ELECTRICAL- Current Transformers Test for accuracy IS 16227-4 : 2015 2.5 A to 3200 A TRANSMISSION LINE EQUIPMENT & ACCESSORIES

148 ELECTRICAL- Current Transformers Test for accuracy IS 16227-4: 2015 2.5 A to 3200 A TRANSMISSION LINE EQUIPMENT & ACCESSORIES

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 29 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

149 ELECTRICAL- Current Transformers Test for Composite Cl. No. 7.1.2 & 7.2.2 of 0.1 % to 10 % TRANSMISSION LINE error of protective IS 2705 (Part-3): 1992 EQUIPMENT & current transformer ACCESSORIES

150 ELECTRICAL- Current Transformers Test for Composite Cl. No. 7.2.6.203 & 0.1 % to 10 % TRANSMISSION LINE error of protective 7.3.5.203 of IEC EQUIPMENT & current transformer 61869-2: 2012 ACCESSORIES

151 ELECTRICAL- Current Transformers Test for Composite Cl. No. 7.2.6.203 & 0.1 % to 10 % TRANSMISSION LINE error of protective 7.3.5.203 of IS 16227- EQUIPMENT & current transformer 2: 2016 ACCESSORIES

152 ELECTRICAL- Current Transformers Test for Composite Cl. No. 7.2.6.203 & 0.1 % to 10 % TRANSMISSION LINE error of protective 7.3.5.203 of IS 16227- EQUIPMENT & current transformer 4: 2015 ACCESSORIES

153 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 6.1 of IS 2705 1 V to 5 kV TRANSMISSION LINE point e.m.f. and (Part-4): 1992 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

154 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 6.1 of IS 2705 1 mA to 6 A TRANSMISSION LINE point e.m.f. and (Part-4): 1992 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

155 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 7.3.203 of IEC 1 V to 5 kV TRANSMISSION LINE point e.m.f. and 61869-2: 2012 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 30 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

156 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 7.3.203 of IEC 1 mA to 6 A TRANSMISSION LINE point e.m.f. and 61869-2: 2012 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

157 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 7.3.203 of IS 1 V to 5 kV TRANSMISSION LINE point e.m.f. and 16227-2: 2016 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

158 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 7.3.203 of IS 1 mA to 6 A TRANSMISSION LINE point e.m.f. and 16227-2: 2016 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

159 ELECTRICAL- Current Transformers Test for rated knee IS 16227-4 : 2016 1 V to 5 kV TRANSMISSION LINE point e.m.f. and EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

160 ELECTRICAL- Current Transformers Test for rated knee IS 16227-4 : 2016 1 mA to 6 A TRANSMISSION LINE point e.m.f. and EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

161 ELECTRICAL- Current Transformers Test for turns ratio error Cl. No. 6.3 of IS 2705 1 to 1000 TRANSMISSION LINE (Part-4): 1992 EQUIPMENT & ACCESSORIES

162 ELECTRICAL- Current Transformers Test for turns ratio error Cl. No. 7.3.5.206 of 1 to 1000 TRANSMISSION LINE IEC 61869-2: 2012 EQUIPMENT & ACCESSORIES

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 31 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

163 ELECTRICAL- Current Transformers Test for turns ratio error Cl. No. 7.2.6.202 & 1 to 1000 TRANSMISSION LINE 7.5.2 of IS 16227-2: EQUIPMENT & 2016 ACCESSORIES

164 ELECTRICAL- Current Transformers Test for turns ratio error IS 16227-4 : 2015 1 to 1000 TRANSMISSION LINE EQUIPMENT & ACCESSORIES

165 ELECTRICAL- Current Transformers Verification of markings Cl. No. 9.2 of IS 2705 Qualitative TRANSMISSION LINE (Part-1): 1992 EQUIPMENT & ACCESSORIES

166 ELECTRICAL- Current Transformers Verification of markings Cl. No. 7.3.6 of IEC Qualitative TRANSMISSION LINE 61869-1: 2007 EQUIPMENT & ACCESSORIES

167 ELECTRICAL- Current Transformers Verification of markings IS 16227-2: 2016 Qualitative TRANSMISSION LINE EQUIPMENT & ACCESSORIES

168 ELECTRICAL- Current Transformers Verification of markings Cl. No. 7.3.6 of IS Qualitative TRANSMISSION LINE 16227-4 : 2015 EQUIPMENT & ACCESSORIES

169 ELECTRICAL- Potential Transformer Verification of Marking IS16227-4:2015 Cl no. Qualitative TRANSMISSION LINE & Capacitive Voltage 9.2 of IS3156(Part- EQUIPMENT & Transformer 1):1992,cl no. 7.3.6 of ACCESSORIES IEC61869-1:2007- 10,IEC 61869-4:: 2013

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 32 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

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170 ELECTRICAL- Potential Transformer Test of Accuracy Cl no. 8.1.1 & 8.2.1 of 220V to TRANSMISSION LINE and Capacitive Voltage IS 3156(Part-2):1992, 33KV/110V220V/v3 to EQUIPMENT & Transformer Cl no. 10.1.1.2, 33KV/v3/110V/v3 ACCESSORIES 10.1.2.1 of IS3156(Part-3):1992, cl no. 7.2.6&7.3.5 of IEC61869-1:2007-10, CL NO. 7.2.6 & 7.3.5 of IEC61869-3:2011-07, CL NO. 7.2.6 & 7.3.5 of IS 16227-3:2015, IS16227-3: 2015

171 ELECTRICAL- Potential Transformers Separate Source Cl. No. 9.3.1.1 & upto 5kV AC TRANSMISSION LINE & Capacitive Voltage Voltage withstand Test 9.3.2.1 of IS 3156 EQUIPMENT & Transformers (Part-1) : 1992, Cl. No. ACCESSORIES 7.3.1, 7.3.3 & 7.3.4 of IEC 61869-1 : 2007-10, Cl. No. 7.3.1, 7.3.3 & 7.3.4 of IEC 61869-3 : 2011-07, Cl. No. 7.3.1, 7.3.3 & 7.3.4 of IS 16227-3 : 2015: 2015

172 ELECTRICAL- Potential Transformers High Voltage Power Clause No. 9.4 of IS Range upto 5kV AC TRANSMISSION LINE and Capacitive Voltage Frequency Dry Test in 3156(Part-1)1992: EQUIPMENT & Transformer Secondary 1992 ACCESSORIES

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 33 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

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1 ELECTRICAL- 1. Electrical and Test of Repeatability of IS 13779:1999 up to 300V1mA to ELECTRICAL Electronic (Static) errors (Reaffirmed 2014) CI. 120A45Hz to 55HzP.F. INDICATING & Energy Meter 2. No. 12.17 IS +1 to -1 RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 12.16 CBIP Publication No.: 304:2008 CI. No. 5.6.9 CBIP Publication No.: 325:2015 Cl. No. 5.6.9 Cl. No. 5.6.7 of IS 15884:2010 Cl. No. 6.12 of IS 16444 (Part 1) : 2015 Cl. No. 6.12 of IS 16444 (Part 2) : 2017: 2017

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 34 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

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2 ELECTRICAL- 1. Electrical and Test of influence CI. No. 12.11 Of IS up to 300V1mA to ELECTRICAL Electronic (Static) Quantitya) Frequency 13779:1999 120A45 Hz to 55HzPF. INDICATING & Energy Meter 2. Variationb) Voltage (Reaffirmed 2014) CI. +1 to -167mT, 0.2T, RECORDING Prepayment/ Smart Variationc) DC No. 12.10 Of IS 0.27T & 0.5T0.5mT, INSTRUMENTS Meters Magnetic induction of 14697:1999 10mT, & 0.2T0.5T & external origind) AC (Reaffirmed 2014) CI. 0.27T Magnetic induction of No. 5.6.2 Of CBIP external origine) Publication No.: Magnetic induction of 304:2008 Cl. No. 5.6.2 Permanent Magnet Of CBIP Publication No.: 325:2015 IEC 62052-11:2016 Cl. No. 8.2 of IEC 62053- 21:2016 Cl. No. 8.2 of IEC 62053-22:2016 Cl. No. 8.2 of IEC 62053- 23:2016, Cl. No. 8.3 of IEC 62053-24:2016, Cl. No. 4.6.2 of IS 15884:2010 Cl. No. 6.12 of IS 16444 (Part 1) : 2015 Cl. No. 6.12 of IS 16444 (Part 2) : 2017 Cl. No. 8 of IEC 62055-31:2005: 2005

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 35 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

3 ELECTRICAL- 1. Electrical and Test of limits of errors/ IS 13779:1999 up to 300V,1mA to ELECTRICAL Electronic (Static) Test of Accuracy (Reaffirmed 2014) CI. 120A45Hz to 55HzP.F INDICATING & Energy Meter 2. requirement No. 11.1 IS +1 to -1 RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 11.1 CBIP Publication No.: 304:2008 CI. No. 5.6.8 CBIP Publication No.: 325:2015 Cl. No. 4.6.2 IEC 62052-11:2016 IEC 62053-21:2016, Cl. No. 8.1 IEC 62053- 22:2016, Cl. No. 8.1 IEC 62053-23:2016, Cl. No. 8.1 IEC 62053- 24:2016, Cl. No. 8.2 IEC 62055-31:2005, Cl. No. 8.0 IS 13875 (Part 1 & 3):1993 Cl. No. 4.6.1 of IS 15884:2010 Cl. No. 6.12 of IS 16444 (Part 1) : 2015 Cl. No. 6.12 of IS 16444 (Part 2) : 2017 Cl: 2005

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 36 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

4 ELECTRICAL- 1. Electrical and Test of Meter Constant IS 13779:1999 up to 300V1mA to ELECTRICAL Electronic (Static) (Reaffirmed 2014) CI. 120A45Hz to 55HzP.F: INDICATING & Energy Meter 2. No. 12.15 IS +1 to -1 RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 12.14 CBIP Publication No.: 304:2008 CI. No. 5.6.6 CBIP Publication No.: 325:2015 Cl. No. 5.6.6 IEC 62052-11:2016 IEC 62053-21:2016, Cl. No. 8.4 IEC 62053- 22:2016, Cl. No. 8.4 IEC 62053-23:2016, Cl. No. 8.4 IEC 62053- 24:2016, Cl. No. 8.5 Cl. No. 5.6.5 of IS 15884:2010 Cl. No. 6.12 of IS 16444 (Part 1) : 2015 Cl. No. 8 of IEC 62055-31:2005 Cl. No. 6.12 of IS 16444 (Part 2) : 2017: 2017

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 37 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

5 ELECTRICAL- 1. Electrical and Test of No Load IS 13779:1999 up to 300V45Hz to ELECTRICAL Electronic (Static) Condition (Reaffirmed 2014) CI. 55HzPF.; +1 to -1 INDICATING & Energy Meter 2. No. 12.13 IS RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 12.12 CBIP Publication No.: 304:2008 CI. No. 5.6.4 CBIP Publication No.: 325:2015 Cl. No. 5.6.4 IEC 62052-11:2016 IEC 62053-21:2016, Cl. No. 8.3 IEC 62053- 22:2016, Cl. No. 8.3 IEC 62053-23:2016, Cl. No. 8.3 IEC 62053- 24:2016, Cl. No. 8.4 Cl. No. 5.6.3 of IS 15884:2010 Cl. No. 6.12 of IS 16444 (Part 1) : 2015 Cl. No. 6.12 of IS 16444 (Part 2) : 2017 Cl. No. 8 of IEC 62055-31:2005: 2005

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 38 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

6 ELECTRICAL- 1. Electrical and Test of Power IS 13779:1999 up to 300V1mA to ELECTRICAL Electronic (Static) Consumption Test (Reaffirmed 2014) CI. 120A,45Hz to 55HzP.F. INDICATING & Energy Meter 2. No. 12.7.1 IS +1 to -1 RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 12.7.1 CBIP Publication No.: 304:2008 CI. No. 5.4.1 CBIP Publication No.: 325:2015 Cl. No. 5.4.1 IEC 62052-11:2016 IEC 62053-21:2016, Cl. No. 7.1 IEC 62053- 22:2016, Cl. No. 7.1 IEC 62053-23:2016, Cl. No. 7.1 IEC 62053- 24:2016, Cl. No. 7.2 Cl. No. 5.4.1 of IS 15884:2010 Cl. No. 6.10.1 of IS 16444 (Part 1) : 2015 Cl. No. 6.10.1 of IS 16444 (Part 2) : 2017 Cl. No. 7.3 of IEC 62055- 31:2005: 2005

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 39 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

7 ELECTRICAL- 1. Electrical and AC High Voltage Test IS 13779:1999 1 KV to 5 KV ELECTRICAL Electronic (Static) (Reaffirmed 2014) CI. INDICATING & Energy Meter2. No. 12.7.6.3 IS RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No.12.7.6.3 CBIP Publication No.: 304:2008 CI. No. 5.4.6.3 CBIP Publication No.: 325:2015 Cl. No. 5.4.6.3 IEC 62052- 11:2016, Cl. No. 7.3 IEC 62052-31:2015, Cl. No. 6.10 IEC 62053- 21:2016, Cl. No. 7.4 IEC 62053-22:2016, Cl. No. 7.4 IEC 62053- 23:2016, Cl. No. 7.4 IEC 62053-24:2016, Cl. No. 7.5 Cl. No. 5.4.6.3 of IS 15884:2010 Cl. No. 6.10.6 of IS 16444 (Part 1) : 2015 Cl. No. 6.10.6 of IS 16444 (Part 2) : 20: 2005

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 40 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

8 ELECTRICAL- 1. Electrical and Insulation Resistance/ IS 13779:1999 up to ELECTRICAL Electronic (Static) insulation Test (Reaffirmed 2014) CI. 200Mohm500±50V DC INDICATING & Energy Meter2. No. 12.7.6.4 IS RECORDING Prepayment/ Smart 14697:1999 INSTRUMENTS Meters (Reaffirmed 2014) CI. No. 12.7.6.4 CBIP Publication No.: 304:2008 CI. No. 5.4.6.4 CBIP Publication No.: 325:2015 Cl. No. 5.4.6.4 Cl. No. 5.4.6.4 of IS 15884:2010 Cl. No. 6.10.6 of IS 16444 (Part 1) : 2015 Cl. No. 6.10.6 of IS 16444 (Part 2) : 2017: 2017

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 41 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

9 ELECTRICAL- IS 13779:1999 Test of Starting IS 13779:1999 up to 300V1mA to ELECTRICAL (Reaffirmed 2014)CI. Condition (Reaffirmed 2014) CI. 120A45 Hz to INDICATING & No. 12.15IS No. 12.14 IS 55HzPF:- +1 to -1 RECORDING 14697:1999 14697:1999 INSTRUMENTS (Reaffirmed 2014)CI. (Reaffirmed 2014) CI. No. 12.14CBIP No. 12.13 CBIP Publication No.: Publication No.: 304:2008CI. No. 304:2008 CI. No. 5.6.5 5.6.6CBIP Publication CBIP Publication No.: No.: 325:2015Cl. No. 325:2015 Cl. No. 5.6.5 5.6.6IEC 62052- IEC 62052-11:2016 11:2016IEC 62053- IEC 62053-21:2016, Cl. 21:2016, Cl. No. No. 8.3 IEC 62053- 8.4IEC 62053-22:2016, 22:2016, Cl. No. 8.3 Cl. No. 8.4IEC 62053- IEC 62053-23:2016, Cl. 23:2016, Cl. No. No. 8.3 IEC 62053- 8.4IEC 62053-24:2016, 24:2016, Cl. No. 8.4 Cl. Cl. No. 8.5Cl. No. 5.6.5 No. 5.6.4 of IS of IS 15884:2010Cl. 15884:2010 Cl. No. No. 6.12 of IS 16444 6.12 of IS 16444 (Part (Part 1) : 2015Cl. No. 8 1) : 2015 Cl. No. 6.12 of IEC 62055- of IS 16444 (Part 2) : 31:2005Cl. No. 6.12 of 2017 Cl. No. 8 of IEC IS 16444 (Part 2) : 62055-31:2005: 2005 2017

10 ELECTRICAL- 1.Power transformers2 Voltage ratio and check Cl.no.10.1.1.b of IS: 2 to 2000 INDUCTORS & Dry type power of voltage vector 2026 (Part-1) : 2011 TRANSFORMERS transformers3 relationship/phase Distribution displacement transformers (non- sealed type)4. Distribution transformers (sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 42 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

11 ELECTRICAL- 1.Power transformers2 Voltage ratio and check Cl.no.21.2.b of 2 to 2000 INDUCTORS & Dry type power of voltage vector IS:1180(Part 1) : 2014 TRANSFORMERS transformers3 relationship/phase Distribution displacement transformers (non- sealed type)4. Distribution transformers (sealed type)

12 ELECTRICAL- 1.Power transformers2 Voltage ratio and check Cl.no.13.2.b of IS: 2 to 2000 INDUCTORS & Dry type power of voltage vector 11171: 2001 TRANSFORMERS transformers3 relationship/phase Distribution displacement transformers (non- sealed type)4. Distribution transformers (sealed type)

13 ELECTRICAL- 1.Power transformers2 Voltage ratio and check Cl.no.11.1.2.1.b of IEC: 2 to 2000 INDUCTORS & Dry type power of voltage vector 60076 (Part 1): 2011 TRANSFORMERS transformers3 relationship/phase Distribution displacement transformers (non- sealed type)4. Distribution transformers (sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 43 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

14 ELECTRICAL- 1.Power transformers2 Voltage ratio and check Cl.no.16 of IEC:60076 2 to 2000 INDUCTORS & Dry type power of voltage vector (Part 11): 2018 TRANSFORMERS transformers3 relationship/phase Distribution displacement transformers (non- sealed type)4. Distribution transformers (sealed type)

15 ELECTRICAL- 1.Power transformers2 Impedance Cl.no.10.1.1.c of IS: 1 kVA to 100 MVA INDUCTORS & Dry type power voltage/short circuit 2026 (Part-1): 2011 TRANSFORMERS transformers3 impedance and load Distribution loss. transformers (non- sealed type)4. Distribution transformers(sealed type)

16 ELECTRICAL- 1.Power transformers2 Impedance Cl.no.10.1.1.c of IS: 1 kVA to 100 MVA INDUCTORS & Dry type power voltage/short circuit 2026 (Part-1): 2011 TRANSFORMERS transformers3 impedance and load Distribution loss. transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 44 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

17 ELECTRICAL- 1.Power transformers2 Impedance Cl.no.21.2.c of 1 kVA to 100 MVA INDUCTORS & Dry type power voltage/short circuit IS:1180(Part 1) : 2014 TRANSFORMERS transformers3 impedance and load Distribution loss. transformers (non- sealed type)4. Distribution transformers(sealed type)

18 ELECTRICAL- 1.Power transformers2 Impedance Cl.no.21.2.c of 1 kVA to 100 MVA INDUCTORS & Dry type power voltage/short circuit IS:1180(Part 1): 2014 TRANSFORMERS transformers3 impedance and load Distribution loss. transformers (non- sealed type)4. Distribution transformers(sealed type)

19 ELECTRICAL- 1.Power transformers2 Impedance Cl.no.13.2.c of IS: 1 kVA to 100 MVA INDUCTORS & Dry type power voltage/short circuit 11171: 2001 TRANSFORMERS transformers3 impedance and load Distribution loss. transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 45 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

20 ELECTRICAL- 1.Power transformers2 Harmonics of the no- Cl. No. 10.6 of IS 2026 1 kVA to 100 MVA INDUCTORS & Dry type power load current (Part I): 2011 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

21 ELECTRICAL- 1.Power transformers2 Impedance Cl.no.13.2.c of IS: 1 kVA to 100 MVA INDUCTORS & Dry type power voltage/short circuit 11171: 2001 TRANSFORMERS transformers3 impedance and load Distribution loss. transformers (non- sealed type)4. Distribution transformers(sealed type)

22 ELECTRICAL- 1.Power transformers2 Impedance Cl.no.11.1.2.1.c of IEC: 1 kVA to 100 MVA INDUCTORS & Dry type power voltage/short circuit 60076 (Part 1): 2011 TRANSFORMERS transformers3 impedance and load Distribution loss. transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 46 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

23 ELECTRICAL- 1.Power transformers2 Impedance Cl.no.11.1.2.1.c of IEC: 1 kVA to 100 MVA INDUCTORS & Dry type power voltage/short circuit 60076 (Part 1): 2011 TRANSFORMERS transformers3 impedance and load Distribution loss. transformers (non- sealed type)4. Distribution transformers(sealed type)

24 ELECTRICAL- 1.Power transformers2 Impedance Cl.no.17 of IEC:60076 1 kVA to 100 MVA INDUCTORS & Dry type power voltage/short circuit (Part 11): 2018 TRANSFORMERS transformers3 impedance and load Distribution loss. transformers (non- sealed type)4. Distribution transformers(sealed type)

25 ELECTRICAL- 1.Power transformers2 Impedance Cl.no.17 of IEC:60076 1 kVA to 100 MVA INDUCTORS & Dry type power voltage/short circuit (Part 11): 2018 TRANSFORMERS transformers3 impedance and load Distribution loss. transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 47 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

26 ELECTRICAL- 1.Power transformers2 Induced AC Voltage Cl. no.10.1.1.e of IS: Qualitative INDUCTORS & Dry type power tests 2026 (Part-1): 2011, TRANSFORMERS transformers3 Cl.no.21.2.f of Distribution IS:1180(Part 1): 2014, transformers (non- Cl.no.13.2.f of IS: sealed type)4. 11171: 1985, Distribution Cl.no.11.1.2.1.e of IEC: transformers(sealed 60076 (Part 1): 2011, type) Cl.no.15 of IEC: 60076 (Part 11): 2011: 2011

27 ELECTRICAL- 1.Power transformers2 Magnetic balance CBIP publication no.: 1 kVA to 100 MVA INDUCTORS & Dry type power 317 : 2013 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

28 ELECTRICAL- 1.Power transformers2 Measurement of Cl.no.10.1.3.j of IS: 1 kW to 1 TW INDUCTORS & Dry type power insulation resistance 2026 (Part-1): 2011 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 48 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

29 ELECTRICAL- 1.Power transformers2 Measurement of Cl.no.10.1.3.j of IS: 500 to 5 kV transformers (non- V sealed type)4. Distribution transformers(sealed type)

30 ELECTRICAL- 1.Power transformers2 Measurement of Cl.no.21.2.e of IS:1180 1 kW to 1 TW INDUCTORS & Dry type power insulation resistance (Part1): 2014 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

31 ELECTRICAL- 1.Power transformers2 Measurement of Cl.no.21.2.e of IS:1180 500 V to 5 kV INDUCTORS & Dry type power insulation resistance (Part1): 2014 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 49 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

32 ELECTRICAL- 1.Power transformers2 Measurement of Cl.no.11.1.4.h of IEC: 1 kW to 1 TW INDUCTORS & Dry type power insulation resistance 60076 (Part 1): 2011 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

33 ELECTRICAL- 1.Power transformers2 Measurement of Cl.no.11.1.4.h of IEC: 500 V to 5 kV INDUCTORS & Dry type power insulation resistance 60076 (Part 1): 2011 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

34 ELECTRICAL- 1.Power transformers2 Measurement of Cl. no.10.1.1.a of IS 100 µW to 6 kW sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 50 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

35 ELECTRICAL- 1.Power transformers2 Measurement of Cl.no.21.2.a of 100 µW to 6 kW INDUCTORS & Dry type power winding resistance IS:1180(Part 1): 2014 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

36 ELECTRICAL- 1.Power transformers2 Measurement of Cl.no.13.2.a of IS: 100 µW to 6 kW INDUCTORS & Dry type power winding resistance 11171 : 2001 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

37 ELECTRICAL- 1.Power transformers2 Measurement of Cl.no.11.1.2.1.a of IEC: 100 µW to 6 kW INDUCTORS & Dry type power winding resistance 60076 (Part 1) : 2011 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 51 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

38 ELECTRICAL- 1.Power transformers2 Measurement of Cl.no.15 of IEC:60076 100 µW to 6 kW INDUCTORS & Dry type power winding resistance (Part 11): 2018 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

39 ELECTRICAL- 1.Power transformers2 No load loss and Cl.no.10.1.1.d of IS: 1 kVA to 100 MVA INDUCTORS & Dry type power current 2026 (Part-1) : 2011 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

40 ELECTRICAL- 1.Power transformers2 No load loss and Cl.no.10.1.1.d of IS: 1 kVA to 100 MVA INDUCTORS & Dry type power current 2026 (Part-1) : 2011 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 52 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

41 ELECTRICAL- 1.Power transformers2 No load loss and Cl.no.21.2.d of 1 kVA to 100 MVA INDUCTORS & Dry type power current IS:1180(Part 1): 2014 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

42 ELECTRICAL- 1.Power transformers2 No load loss and Cl.no.21.2.d of 1 kVA to 100 MVA INDUCTORS & Dry type power current IS:1180(Part 1): 2014 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

43 ELECTRICAL- 1.Power transformers2 No load loss and Cl.no.13.2.d of IS: 1 kVA to 100 MVA INDUCTORS & Dry type power current 11171: 2001 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 53 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

44 ELECTRICAL- 1.Power transformers2 No load loss and Cl.no.13.2.d of IS: 1 kVA to 100 MVA INDUCTORS & Dry type power current 11171 : 2001 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

45 ELECTRICAL- 1.Power transformers2 No load loss and Cl.no.11.1.2.1.d of IEC: 1 kVA to 100 MVA INDUCTORS & Dry type power current 60076 (Part 1: 2011 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

46 ELECTRICAL- 1.Power transformers2 No load loss and Cl.no.11.1.2.1.d of IEC: 1 kVA to 100 MVA INDUCTORS & Dry type power current 60076 (Part 1): 2011 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 54 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

47 ELECTRICAL- 1.Power transformers2 No load loss and Cl.no.18 of IEC:60076 1 kVA to 100 MVA INDUCTORS & Dry type power current (Part 11): 2018 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

48 ELECTRICAL- 1.Power transformers2 No load loss and Cl.no.18 of IEC:60076 1 kVA to 100 MVA INDUCTORS & Dry type power current (Part 11): 2018 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

49 ELECTRICAL- 1.Power transformers2 Oil leakage CBIP publication no.: Qualitative INDUCTORS & Dry type power 317: 2013 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 55 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

50 ELECTRICAL- 1.Power transformers2 Separate-source Cl. no.10.1.1.e of IS: Qualitative INDUCTORS & Dry type power voltage withstand test 2026 (Part-1): 2011, TRANSFORMERS transformers3 Cl.no.21.2.g of Distribution IS:1180(Part 1): 2014, transformers (non- Cl.no.13.2.e of IS: sealed type)4. 11171: 1985, Distribution Cl.no.11.1.2.1.e of IEC: transformers(sealed 60076 (Part 1): 2011, type) Cl.no.15 of IEC: 60076 (Part 11): 2011: 2011

51 ELECTRICAL- 1.Power transformers2 Temperature rise Cl.no.10.1.2.a of IS: 1 kVA to 100 MVA INDUCTORS & Dry type power 2026 (Part-1): 2011 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

52 ELECTRICAL- 1.Power transformers2 Temperature rise Cl.no.21.3.b of 1 kVA to 100 MVA INDUCTORS & Dry type power IS:1180(Part 1): 2014 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 56 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

53 ELECTRICAL- 1.Power transformers2 Temperature rise Cl.no.13.1.h of IS: 1 kVA to 100 MVA INDUCTORS & Dry type power 11171: 2001 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

54 ELECTRICAL- 1.Power transformers2 Temperature rise Cl.no.11.1.3.a of IEC: 1 kVA to 100 MVA INDUCTORS & Dry type power 60076 (Part 1) : 2011 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

55 ELECTRICAL- 1.Power transformers2 Temperature rise Cl.no.23 of IEC:60076 1 kVA to 100 MVA INDUCTORS & Dry type power (Part 11): 2018 TRANSFORMERS transformers3 Distribution transformers (non- sealed type)4. Distribution transformers(sealed type)

56 ELECTRICAL- Measurement of Frequency Response IEC 60076 (Part 18): Qualitative INDUCTORS & frequency Response 2012 TRANSFORMERS

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 57 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

57 ELECTRICAL- Current Transformers Determination of Cl. No. 6.2 of IS 2705 100 µW to 1 kW TRANSMISSION LINE secondary winding (Part-4): 1992 EQUIPMENT & resistance. ACCESSORIES

58 ELECTRICAL- Current Transformers Determination of Cl. No. 7.3.201 of IEC 100 µW to 1 kW TRANSMISSION LINE secondary winding 61869-2: 2012 EQUIPMENT & resistance. ACCESSORIES

59 ELECTRICAL- Current Transformers Determination of Cl. No. 7.3.201 of IS 100 µW to 1 kW TRANSMISSION LINE secondary winding 16227-2: 2016 EQUIPMENT & resistance. ACCESSORIES

60 ELECTRICAL- Current Transformers Determination of IS 16227-4: 2015 100 µW to 1 kW TRANSMISSION LINE secondary winding EQUIPMENT & resistance. ACCESSORIES

61 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.1.2 of IS 2705 1 V to 750 V TRANSMISSION LINE Instrument security (Part-2): 1992 EQUIPMENT & factor of measuring ACCESSORIES current transformer

62 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.1.2 of IS 2705 1 mA to 6 A TRANSMISSION LINE Instrument security (Part-2): 1992 EQUIPMENT & factor of measuring ACCESSORIES current transformer

63 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.2.6.202 & 1 V to 750 V TRANSMISSION LINE Instrument security 7.5.2 of IEC 61869-2: EQUIPMENT & factor of measuring 2012 ACCESSORIES current transformer

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 58 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

64 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.2.6.202 & 1 mA to 6 A TRANSMISSION LINE Instrument security 7.5.2 of IEC 61869-2: EQUIPMENT & factor of measuring 2012 ACCESSORIES current transformer

65 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.2.6.202 & 1 V to 750 V TRANSMISSION LINE Instrument security 7.5.2 of IS 16227-2: EQUIPMENT & factor of measuring 2016 ACCESSORIES current transformer

66 ELECTRICAL- Current Transformers Determination of the Cl. No. 7.2.6.202 & 1 mA to 6 A TRANSMISSION LINE Instrument security 7.5.2 of IS 16227-2: EQUIPMENT & factor of measuring 2016 ACCESSORIES current transformer

67 ELECTRICAL- Current Transformers Determination of the IS 16227-4: 2015 1 V to 750 V TRANSMISSION LINE Instrument security EQUIPMENT & factor of measuring ACCESSORIES current transformer

68 ELECTRICAL- Current Transformers Determination of the IS 16227-4: 2015 1 mA to 6 A TRANSMISSION LINE Instrument security EQUIPMENT & factor of measuring ACCESSORIES current transformer

69 ELECTRICAL- Current Transformers Power frequency Cl. No. 9.3 & 9.4 of IS 0 kVac to 28 kVac TRANSMISSION LINE voltage withstand test. 2705 (Part-1): 1992 EQUIPMENT & ACCESSORIES

70 ELECTRICAL- Current Transformers Power frequency Cl. No, 7.3.1, 7.3.3 & 0 kVac to 28 kVac TRANSMISSION LINE voltage withstand test. 7.3.4 of IEC 61869-1: EQUIPMENT & 2007 ACCESSORIES

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 59 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

71 ELECTRICAL- Current Transformers Power frequency Cl. No, 7.3.1, 7.3.3 & 0 kVac to 28 kVac TRANSMISSION LINE voltage withstand test. 7.3.4 of IEC 61869-2: EQUIPMENT & 2012 ACCESSORIES

72 ELECTRICAL- Current Transformers Power frequency Cl. No, 7.3.1, 7.3.3 & 0 kVac to 28 kVac TRANSMISSION LINE voltage withstand test. 7.3.4 of IS 16227-2 : EQUIPMENT & 2016 ACCESSORIES

73 ELECTRICAL- Current Transformers Power frequency IS 16227-4 : 2015 0 kVac to 28 kVac TRANSMISSION LINE voltage withstand test. EQUIPMENT & ACCESSORIES

74 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.1.1 & 7.2.1 of 2.5 A to 3200 A TRANSMISSION LINE IS 2705 (Part-2 & Part- EQUIPMENT & 3): 1992 ACCESSORIES

75 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.1.1 & 7.2.1 of 2.5 A to 3200 A TRANSMISSION LINE IS 2705 (Part-2 & Part- EQUIPMENT & 3) : 1992 ACCESSORIES

76 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IEC 61869-1: 2007 EQUIPMENT & ACCESSORIES

77 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IEC 61869-1: 2007 EQUIPMENT & ACCESSORIES

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 60 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

78 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IEC 61869-2 : 2012 EQUIPMENT & ACCESSORIES

79 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IEC 61869-2 : 2012 EQUIPMENT & ACCESSORIES

80 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IS 16227-2: 2016 EQUIPMENT & ACCESSORIES

81 ELECTRICAL- Current Transformers Test for accuracy Cl. No. 7.2.6 & 7.3.5 of 2.5 A to 3200 A TRANSMISSION LINE IS 16227-2: 2016 EQUIPMENT & ACCESSORIES

82 ELECTRICAL- Current Transformers Test for accuracy IS 16227-4 : 2015 2.5 A to 3200 A TRANSMISSION LINE EQUIPMENT & ACCESSORIES

83 ELECTRICAL- Current Transformers Test for accuracy IS 16227-4: 2015 2.5 A to 3200 A TRANSMISSION LINE EQUIPMENT & ACCESSORIES

84 ELECTRICAL- Current Transformers Test for Composite Cl. No. 7.1.2 & 7.2.2 of 0.1 % to 10 % TRANSMISSION LINE error of protective IS 2705 (Part-3): 1992 EQUIPMENT & current transformer ACCESSORIES

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 61 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

85 ELECTRICAL- Current Transformers Test for Composite Cl. No. 7.2.6.203 & 0.1 % to 10 % TRANSMISSION LINE error of protective 7.3.5.203 of IEC EQUIPMENT & current transformer 61869-2: 2012 ACCESSORIES

86 ELECTRICAL- Current Transformers Test for Composite Cl. No. 7.2.6.203 & 0.1 % to 10 % TRANSMISSION LINE error of protective 7.3.5.203 of IS 16227- EQUIPMENT & current transformer 2: 2016 ACCESSORIES

87 ELECTRICAL- Current Transformers Test for Composite Cl. No. 7.2.6.203 & 0.1 % to 10 % TRANSMISSION LINE error of protective 7.3.5.203 of IS 16227- EQUIPMENT & current transformer 4: 2015 ACCESSORIES

88 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 6.1 of IS 2705 1 V to 5 kV TRANSMISSION LINE point e.m.f. and (Part-4): 1992 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

89 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 6.1 of IS 2705 1 mA to 6 A TRANSMISSION LINE point e.m.f. and (Part-4): 1992 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

90 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 7.3.203 of IEC 1 V to 5 kV TRANSMISSION LINE point e.m.f. and 61869-2: 2012 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

91 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 7.3.203 of IEC 1 mA to 6 A TRANSMISSION LINE point e.m.f. and 61869-2: 2012 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 62 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

92 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 7.3.203 of IS 1 V to 5 kV TRANSMISSION LINE point e.m.f. and 16227-2: 2016 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

93 ELECTRICAL- Current Transformers Test for rated knee Cl. No. 7.3.203 of IS 1 mA to 6 A TRANSMISSION LINE point e.m.f. and 16227-2: 2016 EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

94 ELECTRICAL- Current Transformers Test for rated knee IS 16227-4 : 2016 1 V to 5 kV TRANSMISSION LINE point e.m.f. and EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

95 ELECTRICAL- Current Transformers Test for rated knee IS 16227-4 : 2016 1 mA to 6 A TRANSMISSION LINE point e.m.f. and EQUIPMENT & exciting current at rated ACCESSORIES knee point e.m.f.

96 ELECTRICAL- Current Transformers Test for turns ratio error Cl. No. 6.3 of IS 2705 1 to 1000 TRANSMISSION LINE (Part-4): 1992 EQUIPMENT & ACCESSORIES

97 ELECTRICAL- Current Transformers Test for turns ratio error Cl. No. 7.3.5.206 of 1 to 1000 TRANSMISSION LINE IEC 61869-2: 2012 EQUIPMENT & ACCESSORIES

98 ELECTRICAL- Current Transformers Test for turns ratio error Cl. No. 7.2.6.202 & 1 to 1000 TRANSMISSION LINE 7.5.2 of IS 16227-2: EQUIPMENT & 2016 ACCESSORIES

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 63 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

99 ELECTRICAL- Current Transformers Test for turns ratio error IS 16227-4 : 2015 1 to 1000 TRANSMISSION LINE EQUIPMENT & ACCESSORIES

100 ELECTRICAL- Current Transformers Verification of markings Cl. No. 9.2 of IS 2705 Qualitative TRANSMISSION LINE (Part-1): 1992 EQUIPMENT & ACCESSORIES

101 ELECTRICAL- Current Transformers Verification of markings Cl. No. 7.3.6 of IEC Qualitative TRANSMISSION LINE 61869-1: 2007 EQUIPMENT & ACCESSORIES

102 ELECTRICAL- Current Transformers Verification of markings IS 16227-2: 2016 Qualitative TRANSMISSION LINE EQUIPMENT & ACCESSORIES

103 ELECTRICAL- Current Transformers Verification of markings Cl. No. 7.3.6 of IS Qualitative TRANSMISSION LINE 16227-4 : 2015 EQUIPMENT & ACCESSORIES

104 ELECTRICAL- Potential Transformer Verification of Marking IS16227-4:2015 Cl no. Qualitative TRANSMISSION LINE & Capacitive Voltage 9.2 of IS3156(Part- EQUIPMENT & Transformer 1):1992,cl no. 7.3.6 of ACCESSORIES IEC61869-1:2007- 10,IEC 61869-4:: 2013

This is annexure to 'Certificate of Accreditation' and does not require any signature. Laboratory Name ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION ERDA NORTH LABORATORY GURUGRAM, CBIP CENTRE OF EXCELLENCE GROUND FLOOR, PLOT NO. 21 SECTOR 32, GURGAON, HARYANA , INDIA Accreditation Standard ISO/IEC 17025:2017 Certificate Number TC-5728 Page No. : 64 / 64 Validity 31/07/2019 to 30/07/2021 Last Amended on -

S.No Discipline / Group Product / Material of Specific Test Test Method Range of Testing/ Test Performed Specification Limits of Detection against which tests are performed

105 ELECTRICAL- Potential Transformer Test of Accuracy Cl no. 8.1.1 & 8.2.1 of 220V to TRANSMISSION LINE and Capacitive Voltage IS 3156(Part-2):1992, 33KV/110V220V/v3 to EQUIPMENT & Transformer Cl no. 10.1.1.2, 33KV/v3/110V/v3 ACCESSORIES 10.1.2.1 of IS3156(Part-3):1992, cl no. 7.2.6&7.3.5 of IEC61869-1:2007-10, CL NO. 7.2.6 & 7.3.5 of IEC61869-3:2011-07, CL NO. 7.2.6 & 7.3.5 of IS 16227-3:2015, IS16227-3: 2015

106 ELECTRICAL- Potential Transformers Separate Source Cl. No. 9.3.1.1 & upto 5kV AC TRANSMISSION LINE & Capacitive Voltage Voltage withstand Test 9.3.2.1 of IS 3156 EQUIPMENT & Transformers (Part-1) : 1992, Cl. No. ACCESSORIES 7.3.1, 7.3.3 & 7.3.4 of IEC 61869-1 : 2007-10, Cl. No. 7.3.1, 7.3.3 & 7.3.4 of IEC 61869-3 : 2011-07, Cl. No. 7.3.1, 7.3.3 & 7.3.4 of IS 16227-3 : 2015: 2015

107 ELECTRICAL- Potential Transformers High Voltage Power Clause No. 9.4 of IS Range upto 5kV AC TRANSMISSION LINE and Capacitive Voltage Frequency Dry Test in 3156(Part-1)1992: EQUIPMENT & Transformer Secondary 1992 ACCESSORIES

This is annexure to 'Certificate of Accreditation' and does not require any signature.