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  • BS EN 61643-331:2003

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Low voltage surge protective devices Specification for metal oxide varistors (MOV)

    Available format(s):  Hardcopy, PDF

    Superseded date:  11-11-2022

    Language(s):  English

    Published date:  22-08-2003

    Publisher:  British Standards Institution

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

    1 Scope
    2 Normative references
    3 Parametric terms, letter symbols and definitions
      3.1 Ratings
      3.2 Characteristics
      3.3 Circuit symbol
    4 Service conditions
      4.1 Normal service conditions
      4.2 Abnormal service conditions
    5 Basic function and MOV component description
    6 Identification
      6.1 Generalities
      6.2 Functional and constructive characteristics
      6.3 Manufacturing inspections
    7 Marking
    8 Testing and measuring methods
      8.1 Standard design test criteria
      8.2 Test conditions
      8.3 Ratings
      8.4 Electrical characteristics
      8.5 Dependability
    9 Fault and failure mode
      9.1 Degradation fault mode
      9.2 Fault-mode determination of rating test failures
    Annex A (normative) MOV testing for IEC 61643-1 surge
            protective devices
    Annex ZA (normative) Normative references to international
             publications with their corresponding European
             publications
    Bibliography
    Figures

    Abstract - (Show below) - (Hide below)

    Designed to protect apparatus or personnel, or both, from high transient voltages. Applies to MOVs having two electrodes.

    Scope - (Show below) - (Hide below)

    Details the test specifications for metal oxide varistors (MOV), which are used for applications up to 1000 V a.c. or 1500 V d.c. in power line, or telecommunication, or signalling circuits. The MOVs are designed to protect apparatus or personnel, or both from high transient voltages. Does not deal with hybrid devices. Does not apply also to mountings and their effect on the MOVs characteristics.

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

    Committee PEL/37
    Development Note Supersedes 98/233300 DC (09/2003)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

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

    BS 1363-1:2016+A1:2018 13 A plugs, socket-outlets, adaptors and connection units Specification for rewirable and non-rewirable 13 A fused plugs

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

    HD 323.2.20 : 200S3 BASIC ENVIRONMENTAL TESTING PROCEDURES - TESTS - TEST T - SOLDERING
    IEC 60068-1:2013 Environmental testing - Part 1: General and guidance
    IEC 60068-2-20:2008 Environmental testing - Part 2-20: Tests - Test T: Test methods for solderability and resistance to soldering heat of devices with leads
    EN 60068-1:2014 Environmental testing - Part 1: General and guidance
    IEC 61643-1:2005 Low-voltage surge protective devices - Part 1: Surge protective devices connected to low-voltage power distribution systems - Requirements and tests
    IEC 61051-2:1991 Varistors for use in electronic equipment - Part 2: Sectional specification for surge suppression varistors
    IEC 61051-2-2:1991 Varistors for use in electronic equipment - Part 2: Blank detail specification for zinc oxide surge suppression varistors. Assessment level E
    EN 60068-2-29:1993 Environmental testing - Part 2: Tests - Test Eb and guidance: Bump
    EN 60068-2-78:2013 Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state
    EN 60068-2-6:2008 Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)
    IEC 60068-2-29:1987 Environmental testing. Part 2: Tests. Test Eb and guidance: Bump
    IEC 61180-1:1992 High-voltage test techniques for low voltage equipment - Part 1: Definitions, test and procedure requirements
    IEC 60060-1:2010 High-voltage test techniques - Part 1: General definitions and test requirements
    IEC 61051-2-1:1991 Varistors for use in electronic equipment - Part 2: Blank detail specification for silicon carbide surge suppression varistors. Assessment level E
    IEC 60068-2-14:2009 Environmental testing - Part 2-14: Tests - Test N: Change of temperature
    EN 60068-2-14:2009 Environmental testing - Part 2-14: Tests - Test N: Change of temperature
    IEC 60068-2-52:2017 Environmental testing - Part 2-52: Tests - Test Kb: Salt mist, cyclic (sodium chloride solution)
    IEC 61051-1:2007 Varistors for use in electronic equipment - Part 1: Generic specification
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