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  • EN 61857-21:2009

    Current The latest, up-to-date edition.

    ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 21: SPECIFIC REQUIREMENTS FOR GENERAL-PURPOSE MODELS - WIRE-WOUND APPLICATIONS

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    Language(s): 

    Published date:  10-07-2009

    Publisher:  European Committee for Standards - Electrical

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Construction
    5 Number of test objects
    6 Test procedures
    7 End-of-life criterion
    8 Analyzing, reporting and classification
    Annex ZA (normative) - Normative references to international
             publications with their corresponding European
             publications
    Bibliography

    Abstract - (Show below) - (Hide below)

    IEC 61857-21:2009 describes a general-purpose model (GPM) and a tall channel alternative model (GPM-TC) which can be used for the evaluation of wire-wound electrical insulation systems (EIS) where specific electrotechnical products are not available or required.

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

    Committee SR 112
    Development Note Supersedes EN 61857-23. (12/2004)
    Document Type Standard
    Publisher European Committee for Standards - Electrical
    Status Current
    Supersedes

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

    BS EN 61857-31:2017 Electrical insulation systems. Procedures for thermal evaluation Applications with a designed life of 5 000 h or less
    CEI EN 61857-31 : 1ED 2017 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 31: APPLICATIONS WITH A DESIGNED LIFE OF 5000 H OR LESS
    BS EN 61858-1:2014 Electrical insulation systems. Thermal evaluation of modifications to an established electrical insulation system (EIS) Wire-wound winding EIS
    I.S. EN 61857-31:2017 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 31: APPLICATIONS WITH A DESIGNED LIFE OF 5000 H OR LESS
    I.S. EN 61858-1:2014 ELECTRICAL INSULATION SYSTEMS - THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED ELECTRICAL INSULATION SYSTEM (EIS) - PART 1: WIRE-WOUND WINDING EIS
    EN 61858-1:2014 Electrical insulation systems - Thermal evaluation of modifications to an established electrical insulation system (EIS) - Part 1: Wire-wound winding EIS
    EN 61857-31:2017 Electrical insulation systems - Procedures for thermal evaluation - Part 31: Applications with a designed life of 5 000 h or less

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

    IEC 60050-195:1998 International Electrotechnical Vocabulary (IEV) - Part 195: Earthing and protection against electric shock
    IEC 60505:2011 Evaluation and qualification of electrical insulation systems
    IEC 61857-1:2008 Electrical insulation systems - Procedures for thermal evaluation - Part 1: General requirements - Low-voltage
    EN 60505:2011/AC:2017-03 EVALUATION AND QUALIFICATION OF ELECTRICAL INSULATION SYSTEMS (IEC 60505:2011/COR1:2017)
    EN 61857-1:2009 Electrical insulation systems - Procedures for thermal evaluation - Part 1: General requirements - Low-voltage
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