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  • IEC 61972:2002

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Method for determining losses and efficiency of three-phase cage induction motors

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

    Superseded date:  10-01-2008

    Language(s):  English - French

    Published date:  22-11-2002

    Publisher:  International Electrotechnical Committee

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

    Foreword
    1 Scope
    2 Normative references
    3 Terms, definitions and symbols
      3.1 Terms and definitions
      3.2 Symbols
    4 Test requirements
      4.1 Power supply
      4.2 Instrumentation
      4.3 Limits of uncertainty
    5 Test procedure
      5.1 General
      5.2 Temperature of machine before test
      5.3 Tests under load
      5.4 No-load test at variable voltage
    6 Determination of efficiency
      6.1 General
      6.2 No-load losses
      6.3 Additional-load losses
      6.4 Reference coolant temperature corrections
      6.5 Efficiency
      6.6 Efficiency at specific load points
    Annex A (informative) Recommended form for calculation of
            motor efficiency
    Annex B (informative) Linear regression analysis
    Annex C (normative) Correction of dynamometer torque readings
    Figures

    Abstract - (Show below) - (Hide below)

    Establishes two methods for determination of efficiency:Method 1: for motors tested by using a torque measurement device, with additional load losses derived from measurements;Method 2: for motors tested without torque measurement, with assigned additional load losses.

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

    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Superseded
    Superseded By

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

    08/30165047 DC : DRAFT JUNE 2008 BS EN ISO 9906 - ROTODYNAMIC PUMPS - HYDRAULIC PERFORMANCE ACCEPTANCE TESTS

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

    IEC 60044-7:1999 Instrument transformers - Part 7: Electronic voltage transformers
    IEC 60051-1:2016 Direct acting indicating analogue electrical measuring instruments and their accessories - Part 1: Definitions and general requirements common to all parts
    IEC 60044-5:2004 Instrument transformers - Part 5: Capacitor voltage transformers
    IEC 60044-8:2002 Instrument transformers - Part 8: Electronic current transformers
    IEC 60044-2:1997+AMD1:2000+AMD2:2002 CSV Instrument transformers - Part 2 : Inductive voltage transformers
    IEC 60044-3:2002 Instrument transformers - Part 3: Combined transformers
    IEC 60044-6:1992 Instrument transformers - Part 6: Requirements for protective current transformers for transient performance
    IEC 60044-1:1996+AMD1:2000+AMD2:2002 CSV Instrument transformers - Part 1: Current transformers
    IEC 60034-1:2017 Rotating electrical machines - Part 1: Rating and performance
    IEC 60034-2:1972 Rotating electrical machines. Part 2: Methods for determining losses and efficiency of rotating electrical machinery from tests (excluding machines for traction vehicles)
    IEC 60044-4:1980 Instrument transformers - Part 4: Measurement of partial discharges
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