• IEC 61857-1:2008

    Current The latest, up-to-date edition.

    Electrical insulation systems - Procedures for thermal evaluation - Part 1: General requirements - Low-voltage

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

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

    Published date:  26-09-2008

    Publisher:  International Electrotechnical Committee

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

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 General information
      4.1 Overview of test procedure
      4.2 Basis of evaluation and qualification
      4.3 Specific requirements
    5 Test objects
      5.1 General
      5.2 Description
      5.3 Number of test objects
    6 Test procedures
      6.1 General
      6.2 Initial screening tests
      6.3 Thermal ageing
      6.4 Prediagnostic mechanical stress
      6.5 Other prediagnostic conditioning
      6.6 Moisture exposure
      6.7 Dielectric diagnostic tests
      6.8 Other diagnostic tests
    7 Analyzing, reporting and classification
      7.1 End-point criterion
      7.2 Method of determining life
      7.3 Extrapolation of data
      7.4 Report of results
    Bibliography

    Abstract - (Show below) - (Hide below)

    IEC 61857-1:2008 specifies a general test procedure for the thermal evaluation and qualification of electrical insulation systems (EIS) and establishes a procedure that compares the performance of a candidate EIS to that of a reference EIS. This standard is applicable to existing or proposed EIS used in electrotechnical products with an input voltage of up to 1 000 V where the thermal factor is the dominating ageing factor. This third edition cancels and replaces the second edition published in 2004, and constitutes editorial revisions to make this standard compatible with Parts 21 and 22.

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

    Committee TC 112
    Development Note Stability Date: 2018. (11/2012)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Current
    Supersedes

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

    02/209876 DC : DRAFT NOV 2002 IEC 62332 TS ED.1 - ELECTRICAL INSULATION SYSTEMS (EIS) - THERMAL EVALUATION OF COMBINED LIQUID AND SOLID COMPONENTS
    PD IEC/TS 62332-3:2016 ELECTRICAL INSULATION SYSTEMS (EIS) - THERMAL EVALUATION OF COMBINED LIQUID AND SOLID COMPONENTS - PART 3: HERMETIC MOTOR-COMPRESSORS
    BS EN 61857-23:2002 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 23: SPECIFIC REQUIREMENTS FOR GENERAL PURPOSE, TALL-CHANNEL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEM (EIS)
    NF EN 61858-1 : 2014 ELECTRICAL INSULATION SYSTEMS - THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED ELECTRICAL INSULATION SYSTEM (EIS) - PART 1: WIRE-WOUND WINDING EIS
    I.S. EN 61857-22:2008 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 22: SPECIFIC REQUIREMENTS FOR ENCAPSULATED-COIL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEM (EIS)
    DD IEC/TS 62332-1:2011 ELECTRICAL INSULATION SYSTEMS (EIS) - THERMAL EVALUATION OF COMBINED LIQUID AND SOLID COMPONENTS - PART 1: GENERAL REQUIREMENTS
    NF EN 61857-21 : 2009 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 21: SPECIFIC REQUIREMENTS FOR GENERAL-PURPOSE MODELS - WIRE-WOUND APPLICATIONS
    I.S. EN 61858:2008 ELECTRICAL INSULATION SYSTEMS - THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED WIRE-WOUND EIS
    I.S. EN 61857-21:2009 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 21: SPECIFIC REQUIREMENTS FOR GENERAL-PURPOSE MODELS - WIRE-WOUND APPLICATIONS
    EN 61857-23 : 2002 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 23: SPECIFIC REQUIREMENTS FOR GENERAL PURPOSE, TALL-CHANNEL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEM (EIS)
    NF EN 61857-22 : 2009 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 22: SPECIFIC REQUIREMENTS FOR ENCAPSULATED-COIL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEM (EIS)
    CEI EN 61857-21 : 2012 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 21: SPECIFIC REQUIREMENTS FOR GENERAL-PURPOSE MODELS - WIRE-WOUND APPLICATIONS
    CEI EN 61857-22 : 2010 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 22: SPECIFIC REQUIREMENTS FOR ENCAPSULATED-COIL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEM (EIS)
    IEC 61857-21:2009 Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose models - Wire-wound applications
    BS EN 61857-21:2009 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 21: SPECIFIC REQUIREMENTS FOR GENERAL-PURPOSE MODELS - WIRE-WOUND APPLICATIONS
    BS EN 62114:2001 ELECTRICAL INSULATION SYSTEMS (EIS) - THERMAL CLASSIFICATION
    IEC TS 62332-2:2014 Electrical insulation systems (EIS) - Thermal evaluation of combined liquid and solid components - Part 2: Simplified test
    I.S. EN 61857-23:2002 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 23: SPECIFIC REQUIREMENTS FOR GENERAL PURPOSE, TALL-CHANNEL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEMS (EIS)
    IEC 62114:2001 Electrical Insulation Systems - Thermal classification
    IEC TS 62101:2005 Electrical insulation systems - Short-time evaluation of combined thermal and electrical stresses
    IEC TS 62332-3:2016 Electrical insulation systems (EIS) - Thermal evaluation of combined liquid and solid components - Part 3: Hermetic motor-compressors
    IEC TS 62332-1:2011 Electrical insulation systems (EIS) - Thermal evaluation of combined liquid and solid components - Part 1: General requirements
    06/30146693 DC : DRAFT FEB 2006
    NF EN 61858 : 2009 ELECTRICAL INSULATION SYSTEMS - THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED WIRE-WOUND EIS
    04/30116267 DC : DRAFT JUL 2004 IEC 61857-31 - ELECTRICAL INSULATION SYSTEMS - PART 31: PROCEDURES FOR SHORT TIME THERMAL EVALUATION
    EN 62114 : 2001 ELECTRICAL INSULATION SYSTEMS (EIS) - THERMAL CLASSIFICATION
    BS EN 61857-31:2017 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 31: APPLICATIONS WITH A DESIGNED LIFE OF 5000 H OR LESS
    12/30273916 DC : 0 BS EN 61858-1 - ELECTRICAL INSULATION SYSTEMS - THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED EIS - PART-1: WIRE-WOUND WINDING EIS
    08/30177151 DC : DRAFT JAN 2008 BS EN 61858 - ELECTRICAL INSULATION SYSTEMS - THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED WIRE-WOUND EIS
    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) - PART 1: WIRE-WOUND WINDING EIS
    BS EN 61857-22:2008 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 22: SPECIFIC REQUIREMENTS FOR ENCAPSULATED-COIL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEM (EIS)
    03/307566 DC : DRAFT JUNE 2003 IEC 61857-21 ED.2.0 - ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 21: SPECIFIC REQUIREMENTS FOR GENERAL PURPOSE MODELS - WIRE-WOUND APPLICATIONS
    BS EN 61858:2008 ELECTRICAL INSULATION SYSTEMS - THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED WIRE-WOUND EIS
    IEC TR 61857-2:2015 Electrical insulation systems - Procedures for thermal evaluation - Part 2: Selection of the appropriate test method for evaluation and classification of electrical insulation systems
    08/30177754 DC : DRAFT FEB 2008 BS EN 61857-21 - ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 21: SPECIFIC REQUIREMENTS FOR GENERAL PURPOSE MODELS - WIRE-WOUND APPLICATIONS
    08/30177155 DC : DRAFT JAN 2008 BS EN 61857-22 - ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 22: SPECIFIC REQUIREMENTS FOR ENCAPSULATED-COIL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEM
    PD IEC/TR 61857-2:2015 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 2: SELECTION OF THE APPROPRIATE TEST METHOD FOR EVALUATION AND CLASSIFICATION OF ELECTRICAL INSULATION SYSTEMS
    BS PD IEC TS 62332-2 : 2014 ELECTRICAL INSULATION SYSTEMS (EIS) - THERMAL EVALUATION OF COMBINED LIQUID AND SOLID COMPONENTS - PART 2: SIMPLIFIED TEST
    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
    IEC 61857-31:2017 Electrical insulation systems - Procedures for thermal evaluation - Part 31: Applications with a designed life of 5 000 h or less
    IEC 61858-1:2014 Electrical insulation systems - Thermal evaluation of modifications to an established electrical insulation system (EIS) - Part 1: Wire-wound winding EIS
    IEC 61857-23:2002 Electrical insulation systems - Procedures for thermal evaluation - Part 23: Specific requirements for general-purpose, tall-channel model - Wire-wound electrical insulation system (EIS)
    EN 61857-22:2008 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 22: SPECIFIC REQUIREMENTS FOR ENCAPSULATED-COIL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEM (EIS)
    16/30333476 DC : 0 BS EN 61857-31 - ELECTRICAL INSULATION SYSTEMS-PROCEDURES FOR THERMAL EVALUATION - PART 31: APPLICATIONS WITH A DESIGNED LIFE LESS THAN 5000 HOURS
    IEC 61858:2008 Electrical insulation systems - Thermal evaluation of modifications to an established wire-wound EIS
    IEC 61857-22:2008 Electrical insulation systems - Procedures for thermal evaluation - Part 22: Specific requirements for encapsulated-coil model - Wire-wound electrical insulation system (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 61857-21:2009 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 21: SPECIFIC REQUIREMENTS FOR GENERAL-PURPOSE MODELS - WIRE-WOUND APPLICATIONS
    EN 61857-31 : 2017 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 31: APPLICATIONS WITH A DESIGNED LIFE OF 5000 H OR LESS (IEC 61857-31:2017)
    EN 61858:2008 ELECTRICAL INSULATION SYSTEMS - THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED WIRE-WOUND EIS

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

    IEC 60216-4-1:2006 Electrical insulating materials - Thermal endurance properties - Part 4-1: Ageing ovens - Single-chamber ovens
    IEC 60493-1:2011 Guide for the statistical analysis of ageing test data - Part 1: Methods based on mean values of normally distributed test results
    IEC 60611:1978 Guide for the preparation of test procedures for evaluating the thermal endurance of electrical insulation systems
    IEC 60505:2011 Evaluation and qualification of electrical insulation systems
    IEC 60085:2007 Electrical insulation - Thermal evaluation and designation
    IEC 60034-18-1:2010 Rotating electrical machines - Part 18-1: Functional evaluation of insulation systems - General guidelines
    IEC 62114:2001 Electrical Insulation Systems - Thermal classification
    IEC 60034-18-21:2012 Rotating electrical machines - Part 18-21: Functional evaluation of insulation systems - Test procedures for wire-wound windings - Thermal evaluation and classification
    IEC 60034-18-31:2012 Rotating electrical machines - Part 18-31: Functional evaluation of insulation systems - Test procedures for form-wound windings - Thermal evaluation and classification of insulation systems used in rotating machines
    IEC 60216-5:2008 Electrical insulating materials - Thermal endurance properties - Part 5: Determination of relative thermal endurance index (RTE) of an insulating material
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