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IEC 60567:2011

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Oil-filled electrical equipment - Sampling of gases and analysis of free and dissolved gases - Guidance

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

08-12-2023

Language(s)

English - French, Spanish, Castilian

Published date

20-10-2011

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Sampling of gases from gas-collecting (Buchholz) relays
4 Labelling of gas samples
5 Sampling, labelling and transferring of oil from
   oil-filled equipment
6 Preparation of gas-in-oil standards
7 Extraction of gases from oil
8 Gas analysis by gas-solid chromatography
9 Quality control
10 Report of results
Annex A (informative) - Correction for incomplete gas
        extraction in partial degassing method by calculation
Annex B (informative) - Mercury-free and shake test versions
        of the standard extraction methods
Annex C (informative) - Preparation of air-saturated standards
Annex D (informative) - Correction for gas bubbles in syringes
        and air gap in rigid bottles
Annex E (informative) - Procedure for comparing gas monitor
        readings to laboratory results
Bibliography

IEC 60567:2011 deals with the techniques for sampling free gases from gas-collecting relays from power transformers. Three methods of sampling free gases are described. The techniques described take account, on the one hand, of the problems peculiar to analyses associated with acceptance testing in the factory, where gas contents of oil are generally very low and, on the other hand, of the problems imposed by monitoring equipment in the field, where transport of samples may be by un-pressurized air freight and where considerable differences in ambient temperature may exist between the plant and the examining laboratory. Since the publication of the previous edition, CIGRE TF.D1.01.15 has made progress in several areas of dissolved gas analysis (DGA). These advances are included in this fourth edition.

Committee
TC 10
DevelopmentNote
Stability Date: 2017. (10/2012)
DocumentType
Standard
Pages
119
PublisherName
International Electrotechnical Committee
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
UNE-EN 60567:2012 Identical
NF EN 60567 : 2012 Identical
NEN EN IEC 60567 : 2012 Identical
I.S. EN 60567:2011 Identical
PN EN 60567 : 2012 Identical
DIN EN 60567 : 2012 Identical
VDE 0370-9 : 2012 Identical
IS 9434 : 2019 Identical
EN 60567:2011 Identical
DS EN 60567 : 2012 Identical
BS EN 60567:2011 Identical
NBN EN 60567 : 2012 Identical
NEN 10567 : 1993 Identical
UNE 21320-28:1983 Identical
SN EN 60567 : 2005 Identical
BS 5574:1978 Identical

02/209876 DC : DRAFT NOV 2002 IEC 62332 TS ED.1 - ELECTRICAL INSULATION SYSTEMS (EIS) - THERMAL EVALUATION OF COMBINED LIQUID AND SOLID COMPONENTS
09/30213532 DC : 0 BS EN 60475 - METHOD OF SAMPLING LIQUID DIELECTRICS
DIN EN 61198 : 1995 MINERAL INSULATING OILS - METHODS FOR THE DETERMINATION OF 2-FURFURAL AND RELATED COMPOUNDS
PD IEC/TR 62874:2015 Guidance on the interpretation of carbon dioxide and 2-furfuraldehyde as markers of paper thermal degradation in insulating mineral oil
BS EN 61869-1:2009 Instrument transformers General requirements
11/30250867 DC : 0 BS EN 62021-3 - INSULATING LIQUIDS - DETERMINATION OF ACIDITY - PART 3: TEST METHODS FOR NON MINERAL INSULATING OILS
BS EN 60814:1998 Insulating liquids. Oil-impregnated paper and pressboard. Determination of water by automatic coulometric Karl Fischer titration
CEI EN 60076-14 : 2014 POWER TRANSFORMERS - PART 14: LIQUID-IMMERSED POWER TRANSFORMERS USING HIGH-TEMPERATURE INSULATION MATERIALS
07/30170365 DC : DRAFT AUG 2007 BS EN 60076-2 - POWER TRANSFORMERS - PART 2: TEMPERATURE-RISE FOR OIL-IMMERSED TRANSFORMERS
I.S. EN 61203:1995 SYNTHETIC ORGANIC ESTERS FOR ELECTRICAL PURPOSES - GUIDE FOR MAINTENANCE OF TRANSFORMER ESTERS IN EQUIPMENT
12/30263868 DC : 0 BS EN 60076-14 - POWER TRANSFORMERS - PART 14: LIQUID-IMMERSED POWER TRANSFORMERS USING HIGH-TEMPERATURE INSULATION MATERIALS
DD IEC/TS 62332-1:2011 Electrical insulation systems (EIS). Thermal evaluation of combined liquid and solid components General requirements
03/100561 DC : DRAFT JULY 2003 IEC 60422 ED.3 - SUPERVISION AND MAINTENANCE GUIDE FOR MINERAL INSULATING OILS IN ELECTRICAL EQUIPMENT
98/202856 DC : 0 PREN 60044-1 - INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
VDE 0380-6 : 1995 MINERAL INSULATING OILS - METHODS FOR THE DETERMINATION OF 2-FURFUROL AND RELATED COMPOUNDS
UNE-EN 60475:2013 Method of sampling insulating liquids
S.R. CLC/TR 50503:2010 GUIDELINES FOR THE INVENTORY CONTROL, MANAGEMENT, DECONTAMINATION AND/OR DISPOSAL OF ELECTRICAL EQUIPMENT AND INSULATING LIQUIDS CONTAINING PCBS
CSA C60044-8 : 2007 : R2016 INSTRUMENT TRANSFORMERS - PART 8: ELECTRONIC CURRENT TRANSFORMERS
IEC TR 62874:2015 Guidance on the interpretation of carbon dioxide and 2-furfuraldehyde as markers of paper thermal degradation in insulating mineral oil
CEI EN 61378-2 : 2002 CONVERTOR TRANSFORMERS - PART 2: TRANSFORMERS FOR HVDC APPLICATIONS
I.S. EN 61181:2007 MINERAL OIL-FILLED ELECTRICAL EQUIPMENT - APPLICATION OF DISSOLVED GAS ANALYSIS (DGA) TO FACTORY TESTS ON ELECTRICAL EQUIPMENT (IEC 61181:2007 (EQV))
I.S. EN 60076-14:2013 POWER TRANSFORMERS - PART 14: LIQUIDIMMERSED POWER TRANSFORMERS USING HIGH-TEMPERATURE INSULATION MATERIALS (IEC 60076-14:2013 (EQV))
IEC 61378-3:2015 Converter transformers - Part 3: Application guide
VDE 0375-2 : 1995 SYNTHETIC ORGANIC ESTERS FOR ELECTRICAL PURPOSES - GUIDE FOR MAINTENANCE OF TRANSFORMER ESTERS IN EQUIPMENT
IEC TS 60076-14:2009 Power transformers - Part 14: Design and application of liquid-immersed power transformers using high-temperature insulation materials
IEC 60599:2015 Mineral oil-filled electrical equipment in service - Guidance on the interpretation of dissolved and free gases analysis
EN 62535:2009 Insulating liquids - Test method for detection of potentially corrosive sulphur in used and unused insulating oil
EN 60076-2:2011 Power transformers - Part 2: Temperature rise for liquid-immersed transformers
EN 62697-1:2012 Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids - Part 1: Test method for quantitative determination of dibenzyldisulfide (DBDS)
EN 62021-2 : 2007 INSULATING LIQUIDS - DETERMINATION OF ACIDITY - PART 2: COLOURIMETRIC TITRATION
OVE EN IEC 60296:2023 01 01 Fluids for electrotechnical applications - Mineral insulating oils for electrical equipment
BS EN 60076-2:2011 Power transformers Temperature rise for liquid-immersed transformers
I.S. EN 60422:2013 MINERAL INSULATING OILS IN ELECTRICAL EQUIPMENT - SUPERVISION AND MAINTENANCE GUIDANCE (IEC 60422:2013 (EQV))
16/30336914 DC : 0 BS EN 60076-57-129 ED 1.0 - CONVERTOR TRANSFORMERS - PART 57-129: TRANSFORMERS FOR HVDC APPLICATIONS
BS EN 60044-1:1999 Instrument transformers Current transformers
NF EN 61869-1 : 2009 INSTRUMENT TRANSFORMERS - PART 1: GENERAL REQUIREMENTS
BS EN 60076-14:2013 Power transformers Liquid-immersed power transformers using high-temperature insulation materials
NF EN 60599 : 2016 MINERAL OIL-FILLED ELECTRICAL EQUIPMENT IN SERVICE - GUIDANCE ON THE INTERPRETATION OF DISSOLVED AND FREE GASES ANALYSIS
BS IEC 61378-3:2015 Converter transformers Application guide
UNE-EN 60076-14:2014 Power transformers - Part 14: Liquid-immersed power transformers using high-temperature insulation materials
CEI EN 60475 : 2012 METHOD OF SAMPLING INSULATING LIQUIDS
04/30126624 DC : DRAFT DEC 2004 IEC 61181 ED.2 - IMPREGNATED INSULATING MATERIALS - APPLICATION OF DISSOLVED GAS ANALYSIS (DGA) TO FACTORY TESTS ON ELECTRICAL EQUIPMENT
CSA C60044-8 : 2007 : R2011 INSTRUMENT TRANSFORMERS - PART 8: ELECTRONIC CURRENT TRANSFORMERS
BS EN 60044-8:2002 Instrument transformers Electronic current transformers
I.S. EN 62146-1:2014 GRADING CAPACITORS FOR HIGH-VOLTAGE ALTERNATING CURRENT CIRCUIT-BREAKERS - PART 1: GENERAL
IEEE DRAFT C57.130 : D17 2006 GUIDE FOR THE USE OF DISSOLVED GAS ANALYSIS DURING FACTORY TEMPERATURE RISE TESTS FOR THE EVALUATION OF OIL-IMMERSED TRANSFORMERS AND REACTORS
I.S. EN 61198:1994 MINERAL INSULATING OILS - METHODS FOR THE DETERMINATION OF 2-FURFURAL AND RELATED COMPOUNDS
I.S. EN 62535:2009 INSULATING LIQUIDS - TEST METHOD FOR DETECTION OF POTENTIALLY CORROSIVE SULPHUR IN USED AND UNUSED INSULATING OIL
I.S. EN 62697-1:2012 TEST METHODS FOR QUANTITATIVE DETERMINATION OF CORROSIVE SULFUR COMPOUNDS IN UNUSED AND USED INSULATING LIQUIDS - PART 1: TEST METHOD FOR QUANTITATIVE DETERMINATION OF DIBENZYLDISULFIDE (DBDS) (IEC 62697-1:2012 (EQV))
CEI 14-42 : 2011 CONVERTER TRANSFORMERS - PART 3: APPLICATION GUIDE
I.S. EN 62021-2:2007 INSULATING LIQUIDS - DETERMINATION OF ACIDITY - PART 2: COLOURIMETRIC TITRATION
NF EN 61181 : 2007 AMD 1 2012 MINERAL OIL-FILLED ELECTRICAL EQUIPMENT - APPLICATION OF DISSOLVED GAS ANALYSIS (DGA) TO FACTORY TESTS ON ELECTRICAL EQUIPMENT
ASTM D 345 : 2002 Side bearings of the freight wagon bogies. General specifications
IEC TS 62332-1:2011 Electrical insulation systems (EIS) - Thermal evaluation of combined liquid and solid components - Part 1: General requirements
IEC 60044-1:1996+AMD1:2000+AMD2:2002 CSV Instrument transformers - Part 1: Current transformers
IEC 60599:2015 RLV Mineral oil-filled electrical equipment in service - Guidance on the interpretation of dissolved and free gases analysis
VDE 0532-42 : 2001 CONVERTOR TRANSFORMERS - PART 2: TRANSFORMERS FOR HVDC APPLICATIONS
DIN EN 60814 : 1999 INSULATING LIQUIDS - OIL-IMPREGNATED PAPER AND PRESSBOARD - DETERMINATION OF WATER BY AUTOMATIC COULOMETRIC KARL FISCHER TITRATION
VDE 0370-20 : 1999 OIL-IMPREGNATIED PAPER AND PRESSBOARD - DETERMINATION OF WATER BY AUTOMATIC COULOMETRIC KARL FISCHER TITRATION
CEI EN 60076-2 : 2015 POWER TRANSFORMERS - PART 2: TEMPERATURE RISE FOR LIQUID-IMMERSED TRANSFORMERS
NF EN 62021-2 : 2007 INSULATING LIQUIDS - DETERMINATION OF ACIDITY - PART 2: COLOURIMETRIC TITRATION
BS EN 62697-1:2012 Test methods for quantitative determination of corrosive sulphur compounds in unused and used insulating liquids Test method for quantitative determination of dibenzyldisulfide (DBDS)
17/30331680 DC : 0 BS ISO 18095 - CONDITION MONITORING AND DIAGNOSTICS OF POWER TRANSFORMERS
06/30159746 DC : 0 BS EN 50503 - FLUIDS FOR ELECTROTECHNICAL APPLICATIONS - STANDARD FOR THE INVENTORY CONTROL, MANAGEMENT, DECONTAMINATION AND/OR DISPOSAL OF ELECTRICAL EQUIPMENT AND INSULATING LIQUIDS CONTAINING PCBS
BS EN 61619:1997 Insulation liquids. Contamination by polychlorinated biphenyls (PCBs). Method of determination by capillary column gas chromatography
BS EN 60475:2011 Method of sampling insulating liquids
NF EN 60044-1 : 2000 AMD 2 2003 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
IEEE 1861-2014 IEEE Guide for On-Site Acceptance Tests of Electrical Equipment and System Commissioning of 1000 kV AC and Above
10/30215366 DC : 0 BS EN 60422 - MINERAL INSULATING OILS IN ELECTRICAL EQUIPMENT - SUPERVISION AND MAINTENANCE GUIDANCE
CSA C60044-2 : 2007 INSTRUMENT TRANSFORMERS - PART 2: INDUCTIVE VOLTAGE TRANSFORMERS
IEC/IEEE 60076-57-129:2017 Power transformers - Part 57-129: Transformers for HVDC applications
CSA C60044-8 :2007 INSTRUMENT TRANSFORMERS - PART 8: ELECTRONIC CURRENT TRANSFORMERS
CSA C60044-2 : 2007 : R2011 INSTRUMENT TRANSFORMERS - PART 2: INDUCTIVE VOLTAGE TRANSFORMERS
BS EN 60599:2016 Mineral oil-filled electrical equipment in service. Guidance on the interpretation of dissolved and free gases analysis
BS EN 62146-1 : 2014 GRADING CAPACITORS FOR HIGH-VOLTAGE ALTERNATING CURRENT CIRCUIT-BREAKERS - PART 1: GENERAL (IEC 62146-1:2013)
I.S. EN 61869-1:2009 INSTRUMENT TRANSFORMERS - PART 1: GENERAL REQUIREMENTS
I.S. EN 60475:2011 METHOD OF SAMPLING INSULATING LIQUIDS (IEC 60475:2011 (EQV))
CSA C61869-1 : 2014 INSTRUMENT TRANSFORMERS - PART 1: GENERAL REQUIREMENTS
IEC 61378-2:2001 Convertor transformers - Part 2: Transformers for HVDC applications
IEC 62535:2008 Insulating liquids - Test method for detection of potentially corrosive sulphur in used and unused insulating oil
IEC 60044-8:2002 Instrument transformers - Part 8: Electronic current transformers
UNE-EN 62697-1:2013 Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids - Part 1: Test method for quantitative determination of dibenzyldisulfide (DBDS)
IEC 62021-2:2007 Insulating liquids - Determination of acidity - Part 2: Colourimetric titration
UNE-EN 61869-1:2010 Instrument transformers -- Part 1: General requirements
BIS IS 16099 : 2013 SYNTHETIC ORGANIC ESTERS FOR ELECTRICAL PURPOSES - GUIDE FOR MAINTENANCE OF TRANSFORMER ESTERS IN EQUIPMENT
DD IEC TS 60076-14 : DRAFT 2009 POWER TRANSFORMERS - PART 14: DESIGN AND APPLICATION OF LIQUID-IMMERSED POWER TRANSFORMERS USING HIGH-TEMPERATURE INSULATION MATERIALS
CEI EN 60044-8 : 2004 INSTRUMENT TRANSFORMERS - PART 8: ELECTRONIC CURRENT TRASFORMERS
BIS IS/IEC 60044-1 : 2003 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
10/30233636 DC : 0 IEC 62697-1 ED.1 - INSULATING LIQUIDS - QUANTITATIVE DETERMINATION OF CORROSIVE SULFUR COMPOUNDS IN USED AND UNUSED INSULATING LIQUIDS - PART 1: TEST METHOD FOR QUANTITATIVE DETERMINATION OF DIBENZYL DISULFIDE (DBDS)
BS EN 62535:2009 Insulating liquids. Test method for detection of potentially corrosive sulphur in used and unused insulating oil
13/30285368 DC : 0 BS EN 60599 - MINERAL OIL-IMPREGNATED ELECTRICAL EQUIPMENT IN SERVICE - GUIDE TO THE INTERPRETATION OF DISSOLVED AND FREE GASES ANALYSIS
PD IEC/TR 62697-3:2018 Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids Test method for quantitative determination of elemental sulfur
BS EN 60422:2013 Mineral insulating oils in electrical equipment. Supervision and maintenance guidance
02/207269 DC : 0 IEC 60422 ED.3 - SUPERVISION AND MAINTENANCE GUIDE FOR MINERAL INSULATING OILS IN ELECTRICAL EQUIPMENT
03/108065 DC : DRAFT MAY 2003 IEC 60044-1 ED.2 - INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
BS EN 62021-2:2007 Insulating liquids. Determination of acidity Colourimetric titration
PD IEC/TS 62332-2:2014 Electrical insulation systems (EIS). Thermal evaluation of combined liquid and solid components Simplified test
DIN EN 61203 : 1995 SYNTHETIC ORGANIC ESTERS FOR ELECTRICAL PURPOSES - GUIDE FOR MAINTENANCE OF TRANSFORMER ESTERS IN EQUIPMENT
VDE 0414-1 : 2001 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
CSA C60044-1 : 2007 : R2011 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
CSA C60044-1 : 2007 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
I.S. EN 60076-2:2011 POWER TRANSFORMERS - PART 2: TEMPERATURE RISE FOR LIQUID-IMMERSED TRANSFORMERS
BS EN 61181 : 2007 MINERAL OIL-FILLED ELECTRICAL EQUIPMENT - APPLICATION OF DISSOLVED GAS ANALYSIS (DGA) TO FACTORY TESTS ON ELECTRICAL EQUIPMENT
ASTM D 3612 : 2002 : R2017 Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
IEC 60599 REDLINE : 3ED 2015 MINERAL OIL-FILLED ELECTRICAL EQUIPMENT IN SERVICE - GUIDANCE ON THE INTERPRETATION OF DISSOLVED AND FREE GASES ANALYSIS
I.S. EN 60599:2016 MINERAL OIL-FILLED ELECTRICAL EQUIPMENT IN SERVICE - GUIDANCE ON THE INTERPRETATION OF DISSOLVED AND FREE GASES ANALYSIS
I.S. EN 60814:1998 INSULATING LIQUIDS - OIL-IMPREGNATED PAPER AND PRESSBOARD - DETERMINATION OF WATER BY AUTOMATIC COULOMETRIC KARL FISCHER TITRATION
IEC 61203:1992 Synthetic organic esters for electrical purposes - Guide for maintenance of transformer esters in equipment
IEC 60076-2:2011 Power transformers - Part 2: Temperature rise for liquid-immersed transformers
IEC 60814:1997 Insulating liquids - Oil-impregnated paper and pressboard - Determination of water by automatic coulometric Karl Fischer titration
IEC 61198:1993 Mineral insulating oils - Methods for the determination of 2-furfural and related compounds
IEC 62146-1:2013+AMD1:2016 CSV Grading capacitors for high-voltage alternating current circuit-breakers - Part 1: General
IEC 61181:2007+AMD1:2012 CSV Mineral oil-filled electrical equipment - Application of dissolved gas analysis (DGA) to factory tests on electrical equipment
IEC 62697-1:2012 Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids - Part 1: Test method for quantitative determination of dibenzyldisulfide (DBDS)
IEC 60475:2011 Method of sampling insulating liquids
UNE-EN 60076-2:2013 Power transformers - Part 2: Temperature rise for liquid-immersed transformers
IEC 60076-14:2013 Power transformers - Part 14: Liquid-immersed power transformers using high-temperature insulation materials
UNE-EN 60422:2013 Mineral insulating oils in electrical equipment - Supervision and maintenance guidance
IEC 60422:2013 Mineral insulating oils in electrical equipment - Supervision and maintenance guidance
ASTM D 3612 : 2002 : EDT 1 Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
BS EN 61378-2:2001 Convertor transformers Transformers for HVDC applications
NF EN 60475 : 2012 METHOD OF SAMPLING INSULATING LIQUIDS
CEI EN 62021-2 : 2007 INSULATING LIQUIDS - DETERMINATION OF ACIDITY - PART 2: COLOURIMETRIC TITRATION
CLC/TR 50503 : 2010 Guidelines for the inventory control, management, decontamination and/or disposal of electrical equipment and insulating liquids containing PCBs
IEC TR 62697-3:2018 Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids - Part 3: Test method for quantitative determination of elemental sulfur
IEC TS 62332-2:2014 Electrical insulation systems (EIS) - Thermal evaluation of combined liquid and solid components - Part 2: Simplified test
CEI EN 61869-1 : 2010 INSTRUMENT TRANSFORMERS - PART 1: GENERAL REQUIREMENTS
I.S. EN 60044-8:2002 INSTRUMENT TRANSFORMERS - PART 8: ELECTRONIC CURRENT TRANSFORMERS
IEC TR 62697-2:2018 Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids - Part 2: Test method for quantitative determination of total corrosive sulfur (TCS)
BIS IS 16085 : 2013 MINERAL OIL-FILLED ELECTRICAL EQUIPMENT - APPLICATION OF DISSOLVED GAS ANALYSIS (DGA) TO FACTORY TESTS ON ELECTRICAL EQUIPMENT
ASTM D 3612 : 2002 : R2009 Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
ASTM D 3612 : 2002 Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
UNE-EN 60599:2016 Mineral oil-filled electrical equipment in service - Guidance on the interpretation of dissolved and free gases analysis
IEC 61869-1:2007 Instrument transformers - Part 1: General requirements
EN 61203:1994 Synthetic organic esters for electrical purposes - Guide for maintenance of transformer esters in equipment
EN 60599:2016 Mineral oil-filled electrical equipment in service - Guidance on the interpretation of dissolved and free gases analysis
EN 61181:2007/A1:2012 MINERAL OIL-FILLED ELECTRICAL EQUIPMENT - APPLICATION OF DISSOLVED GAS ANALYSIS (DGA) TO FACTORY TESTS ON ELECTRICAL EQUIPMENT (IEC 61181:2007/A1:2012)
EN 61378-2:2001 Convertor transformers - Part 2: Transformers for HVDC applications
EN 61869-1:2009 Instrument transformers - Part 1: General requirements
EN 60044-1:1999/A2:2003 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
EN 62146-1:2014/A1:2016 GRADING CAPACITORS FOR HIGH-VOLTAGE ALTERNATING CURRENT CIRCUIT-BREAKERS - PART 1: GENERAL (IEC 62146-1:2013/A1:2016)
EN 60475 : 2011 Method of sampling insulating liquids
EN 60814:1997 Insulating liquids - Oil-impregnated paper and pressboard - Determination of water by automatic coulometric Karl Fischer titration
EN 61198:1994 Mineral insulating oils - Methods for the determination of 2-furfural and related compounds
EN 60044-8:2002 Instrument transformers - Part 8: Electronic current transformers
EN 60076-14:2013 Power transformers - Part 14: Liquid-immersed power transformers using high-temperature insulation materials
EN 60422:2013 Mineral insulating oils in electrical equipment - Supervision and maintenance guidance

ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
ISO 3675:1998 Crude petroleum and liquid petroleum products Laboratory determination of density Hydrometer method
IEC 60599:2015 Mineral oil-filled electrical equipment in service - Guidance on the interpretation of dissolved and free gases analysis
IEC 60475:2011 Method of sampling insulating liquids
IEC 60296:2012 RLV Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear

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