• CEI CLC/TR 50462 : 2009

    Current The latest, up-to-date edition.

    RULES FOR THE DETERMINATION OF UNCERTAINTIES IN THE MEASUREMENT OF THE LOSSES ON POWER TRANSFORMERS AND REACTORS

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2009

    Publisher:  Comitato Elettrotecnico Italiano

    Add To Cart

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

    Introduction
    1 Scope
    2 Normative references
    3 Definitions
    4 Symbols
    5 Power measurement, systematic deviation and uncertainty
    6 Procedures for no-load loss
    7 Procedures for load loss
    8 Three-phase calculations
    9 Reporting
    10 Estimation of corrections and uncertainty contributions
    Annex A (informative) - Example of load loss uncertainty
            evaluation for a large power transformer
    Annex B (informative) - Example of load loss uncertainty
            evaluation for a distribution transformer
    Annex C (informative) - General rules for the uncertainty
            estimate
    Annex D (informative) - Sensitivity coefficients for uncertainty
            contributions due to phase displacement correction
            of measurements at low power factor
    Annex E (informative) - Model function for load loss
            temperature correction
    Annex F (informative) - Measurement of winding resistance
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes the procedures and criteria to be applied to evaluate the uncertainty affecting the measurements of no load and load losses during the routine tests on power transformers.

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

    Committee CT 14
    Development Note Classificazione CEI 14-36. (03/2009)
    Document Type Standard
    Publisher Comitato Elettrotecnico Italiano
    Status Current

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

    EN 60044-2:1999/A2:2003 INSTRUMENT TRANSFORMERS - PART 2: INDUCTIVE VOLTAGE TRANSFORMERS
    ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
    ISO/IEC Guide 98:1993 Guide to the expression of uncertainty in measurement (GUM)
    IEC 60044-2:1997+AMD1:2000+AMD2:2002 CSV Instrument transformers - Part 2 : Inductive voltage transformers
    IEC 60044-1:1996+AMD1:2000+AMD2:2002 CSV Instrument transformers - Part 1: Current transformers
    IEC 60076-1:2011 Power transformers - Part 1: General
    IEEE C57.123 : 2010 IEEE GUIDE FOR TRANSFORMER LOSS MEASUREMENT
    EN 60076-1:2011 POWER TRANSFORMERS - PART 1: GENERAL (IEC 60076-1:2011)
    EN 60044-1:1999/A2:2003 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective