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  • BS EN ISO 17657-3 : 2007

    Current The latest, up-to-date edition.
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    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2007

    Publisher:  British Standards Institution

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

    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Physical environment and operating conditions
    5 Classification of current sensing coils and
      designation of product
      5.1 Class of current sensing coils
      5.2 Standard values of the conversion coefficient
      5.3 Designation of products
    6 Requirements for current sensing coils
      6.1 Current sensing coil and connecting lead
      6.2 Conversion coefficient
      6.3 Measuring accuracy
      6.4 Mechanical strength
      6.5 Setting position error
      6.6 Influence of ambient temperature
      6.7 Thermal property of cover materials
      6.8 Test
    7 Test procedures
      7.1 Conversion coefficient
      7.2 Measuring accuracy
      7.3 Mechanical tests
      7.4 Setting position error test
      7.5 Thermal test
      7.6 Contact test
    8 Marking
    Annex A (informative) Design of current sensing coils
    Annex B (informative) Governing parameters of the
                          conversion coefficient
    Annex C (informative) Type of current sensing coils and
                          their recommended specification range
    Annex D (informative) Frequency response of current sensing

    Abstract - (Show below) - (Hide below)

    Specifies current sensing coils of the toroidal-coil type as a current sensor for welding current meters or a welding current measuring system used to monitor the welding current in resistance welding, and is applicable for both current types, i.e. alternating current of 50 Hz or 60 Hz and direct current.

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

    Committee WEE/29
    Development Note Renumbers and supersedes BS ISO 17657-3. 2007 version incorporates amendment 17297 to BS ISO 17657-3. Supersedes 02/705025 DC. (08/2007)
    Document Type Standard
    Publisher British Standards Institution
    Status Current

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

    ISO 17657-4:2005 Resistance welding Welding current measurement for resistance welding Part 4: Calibration system
    ISO 669:2016 Resistance welding Resistance welding equipment Mechanical and electrical requirements
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