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  • IEC 62021-1:2003

    Current The latest, up-to-date edition.

    Insulating liquids - Determination of acidity - Part 1: Automatic potentiometric titration

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English - French, Spanish, Castilian

    Published date:  24-06-2003

    Publisher:  International Electrotechnical Committee

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    Abstract - (Show below) - (Hide below)

    Describes the procedure for the determination of the acidity of unused and used electrical mineral insulating oils. The method may be used to indicate relative changes that occur in a mineral insulating oil during use under oxidizing conditions regardless of the colour or other properties of the resulting mineral oil. The acidity can be used in the quality control of unused mineral oil. As a variety of oxidation products present in used mineral oil contribute to acidity and these products vary widely in their corrosion properties, the test cannot be used to predict corrosiveness of a mineral oil under service conditions. The acidity results obtained by this test method may or may not be numerically the same as those obtained by colorimetric methods, but they are generally of the same magnitude.

    General Product Information - (Show below) - (Hide below)

    Committee TC 10
    Development Note Stability Date: 2022. (11/2017)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    09/30213528 DC : 0 BS EN 60296 - FLUIDS FOR ELECTROTECHNICAL APPLICATIONS - UNUSED MINERAL INSULATING OIL FOR TRANSFORMERS AND SWITCHGEAR
    12/30257150 DC : 0 BS EN 62770 - FLUIDS FOR ELECTROTECHNICAL APPLICATIONS - UNUSED NATURAL ESTERS LIQUIDS FOR TRANSFORMERS AND SIMILAR ELECTRICAL EQUIPMENT
    CEI EN 61099 : 2011 INSULATING LIQUIDS - SPECIFICATIONS FOR UNUSED SYNTHETIC ORGANIC ESTERS FOR ELECTRICAL PURPOSES
    DD IEC/TS 62332-1:2011 Electrical insulation systems (EIS). Thermal evaluation of combined liquid and solid components General requirements
    I.S. EN 62701:2014 FLUIDS FOR ELECTROTECHNICAL APPLICATIONS - RECYCLED MINERAL INSULATING OILS FOR TRANSFORMERS AND SWITCHGEARS
    I.S. EN 60296:2012 FLUIDS FOR ELECTROTECHNICAL APPLICATIONS - UNUSED MINERAL INSULATING OILS FOR TRANSFORMERS AND SWITCHGEAR (IEC 60296:2012 (EQV))
    IEC 60296 REDLINE : 4.0 FLUIDS FOR ELECTROTECHNICAL APPLICATIONS - UNUSED MINERAL INSULATING OILS FOR TRANSFORMERS AND SWITCHGEAR
    EN 62701:2014 Fluids for electrotechnical applications - Recycled mineral insulating oils for transformers and switchgears
    EN 61099:2010 Insulating liquids - Specifications for unused synthetic organic esters for electrical purposes
    OVE EN IEC 60296:2023 01 01 Fluids for electrotechnical applications - Mineral insulating oils for electrical equipment
    I.S. EN 60422:2013 MINERAL INSULATING OILS IN ELECTRICAL EQUIPMENT - SUPERVISION AND MAINTENANCE GUIDANCE (IEC 60422:2013 (EQV))
    BIS IS 16081 : 2013 INSULATING LIQUIDS - SPECIFICATIONS FOR UNUSED SYNTHETIC ORGANIC ESTERS FOR ELECTRICAL PURPOSES
    I.S. EN IEC 61125:2018 INSULATING LIQUIDS - TEST METHODS FOR OXIDATION STABILITY - TEST METHOD FOR EVALUATING THE OXIDATION STABILITY OF INSULATING LIQUIDS IN THE DELIVERED STATE
    CEI EN 60763-2 : 2007 SPECIFICATION FOR LAMINATED PRESSBOARD - PART 2: METHODS OF TEST
    I.S. EN 60763-2:2007 SPECIFICATION FOR LAMINATED PRESSBOARD - PART 2: METHODS OF TEST
    IEC TS 62332-1:2011 Electrical insulation systems (EIS) - Thermal evaluation of combined liquid and solid components - Part 1: General requirements
    BS EN 60422:2013 Mineral insulating oils in electrical equipment. Supervision and maintenance guidance
    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
    08/30195180 DC : DRAFT DEC 2008 BS EN 61099 - SPECIFICATION FOR UNUSED SYNTHETIC ORGANIC ESTERS FOR ELECTRICAL PURPOSES
    BS EN 60296:2012 Fluids for electrotechnical applications. Unused mineral insulating oils for transformers and switchgear
    10/30215366 DC : 0 BS EN 60422 - MINERAL INSULATING OILS IN ELECTRICAL EQUIPMENT - SUPERVISION AND MAINTENANCE GUIDANCE
    I.S. EN 61099:2010 INSULATING LIQUIDS - SPECIFICATIONS FOR UNUSED SYNTHETIC ORGANIC ESTERS FOR ELECTRICAL PURPOSES
    NF EN 61099 : 2011 INSULATING LIQUIDS - SPECIFICATION FOR UNUSED SYNTHETIC ORGANIC ESTERS FOR ELECTRICAL PURPOSES
    IEC 61125:2018 Insulating liquids - Test methods for oxidation stability - Test method for evaluating the oxidation stability of insulating liquids in the delivered state
    CEI EN 60296 : 2013 FLUIDS FOR ELECTROTECHNICAL APPLICATIONS - UNUSED MINERAL INSULATING OILS FOR TRANSFORMERS AND SWITCHGEAR
    IEC 60763-2:2007 Specification for laminated pressboard - Part 2: Methods of test
    EN 60296:2012 Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear
    EN IEC 61125:2018 Insulating liquids - Test methods for oxidation stability - Test method for evaluating the oxidation stability of insulating liquids in the delivered state
    11/30235371 DC : 0 BS EN 62701 - FLUIDS FOR ELECTRO TECHNICAL APPLICATIONS - RECYCLED MINERAL INSULATING OILS FOR TRANSFORMERS AND SWITCHGEARS
    PD IEC/TS 62332-2:2014 Electrical insulation systems (EIS). Thermal evaluation of combined liquid and solid components Simplified test
    NF EN 60763-2 : 2016 SPECIFICATION FOR LAMINATED PRESSBOARD - PART 2: METHODS OF TEST
    I.S. EN 60079-6:2015 EXPLOSIVE ATMOSPHERES - PART 6: EQUIPMENT PROTECTION BY LIQUID IMMERSION 'O'
    IEC 60079-6:2015 Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o"
    UNE-EN 60079-6:2016 Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o"
    IEC 61099:2010 Insulating liquids - Specifications for unused synthetic organic esters for electrical purposes
    UNE-EN 60296:2012 Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear
    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
    BS EN 61099:2010 Insulating liquids. Specifications for unused synthetic organic esters for electrical purposes
    BS EN IEC 61125:2018 Insulating liquids. Test methods for oxidation stability. Test method for evaluating the oxidation stability of insulating liquids in the delivered state
    13/30267448 DC : 0 BS EN 60079-6 ED 4.0 - EXPLOSIVE ATMOSPHERES - PART 6: EQUIPMENT PROTECTION BY LIQUID IMMERSION 'O'
    BS EN 60763-2:2007 Specification for laminated pressboard Methods of test
    CEI EN 60079-6 : 2016 EXPLOSIVE ATMOSPHERES - PART 6: EQUIPMENT PROTECTION BY LIQUID IMMERSION 'O'
    BS EN 60079-6:2007 Explosive atmospheres Equipment protected by oil immersion \'o\'
    IEC TS 62332-2:2014 Electrical insulation systems (EIS) - Thermal evaluation of combined liquid and solid components - Part 2: Simplified test
    UNE-EN 61099:2011 Insulating liquids - Specifications for unused synthetic organic esters for electrical purposes
    IEC 60296:2012 RLV Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear
    EN 60763-2:2007 Specification for laminated pressboard - Part 2: Methods of test
    EN 60079-6:2015 Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o"
    EN 60422:2013 Mineral insulating oils in electrical equipment - Supervision and maintenance guidance

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 60475:2011 Method of sampling insulating liquids
    ISO 6619:1988 Petroleum products and lubricants — Neutralization number — Potentiometric titration method
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