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  • IEC 60044-8:2002

    View superseded by
    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
    View superseded by

    Instrument transformers - Part 8: Electronic current transformers

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

    Superseded date:  27-04-2016

    Language(s):  English, Spanish, Castilian

    Published date:  19-07-2002

    Publisher:  International Electrotechnical Committee

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

    FOREWORD
    1 Scope
       1.1 General
       1.2 General block diagram of electronic current transformers
       1.3 General block diagram of electronic transformers with a
            digital output
    2 Normative references
    3 Definitions
       3.1 General definitions
       3.2 Additional definitions for measuring electronic current
            transformers
       3.3 Additional definitions for protective electronic current
            transformers
       3.4 Additional definitions for digital output
       3.5 Additional definitions for analogue voltage output
       3.6 Index of main definitions and abbreviations
    4 Normal and special service conditions
       4.1 General
       4.2 Normal service conditions
       4.3 Special service conditions
       4.4 System earthing
    5 Ratings
       5.1 General ratings
       5.2 Standard values for rated phase offset
       5.3 Rating for digital output
       5.4 Rating for analogue voltage output
    6 Design requirements
       6.1 General design requirements
       6.2 Design requirements for digital output
       6.3 Design requirements for analogue voltage output
    7 Classification of tests
       7.1 General
       7.2 Type tests
       7.3 Routine tests
       7.4 Special tests
    8 Type test
       8.1 Short-time current tests
       8.2 Temperature-rise test
       8.3 Impulse tests on primary terminals
       8.4 Wet test for outdoor type electronic current transformers
       8.5 RIV tests
       8.6 Transmitted overvoltage test
       8.7 Low-voltage components voltage withstand test
       8.8 EMC tests
       8.9 Accuracy test
       8.10 Additional accuracy tests for protective electronic current
            transformers
       8.11 Verification of the protection
       8.12 Tightness tests
       8.13 Vibration tests
       8.14 Additional type test for digital output
    9 Routine tests
       9.1 Verification of terminal markings
       9.2 Power-frequency withstand tests on primary terminals
            and partial discharge measurement
       9.3 Power-frequency voltage withstand test for low-voltage
            components
       9.4 Accuracy tests
       9.5 Tightness tests
       9.6 Additional routine tests for digital output
       9.7 Additional routine tests for analogue output
    10 Special tests
       10.1 Chopped lightning-impulse test on primary terminals
       10.2 Measurement of capacitance and dielectric dissipation
            factor
       10.3 Mechanical tests
       10.4 Tests for accuracy versus harmonics
       10.5 Tests in accordance with the technology applied
    11 Marking
       11.1 Terminal marking - General rules
       11.2 Rating plate markings
    12 Additional requirements for measuring electronic current
       transformers
       12.1 Accuracy class designation
       12.2 Limits of current error and phase error at rated frequency
       12.3 Accuracy requirements on harmonics
    13 Additional requirements for protective electronic current
       transformers
       13.1 Accuracy classes
       13.2 Accuracy requirements on harmonics
    14 Information to be given with enquiries, tenders and orders
       14.1 Designation
       14.2 Dependability
    15 Rules for transport, storage and installation
       15.1 Conditions during transport, storage and installation
       15.2 Installation
       15.3 Unpacking and lifting
       15.4 Assembly
       15.5 Operation
       15.6 Maintenance
    16 Safety
       16.1 Electrical aspects
       16.2 Mechanical aspects
       16.3 Thermal aspects
    Annex A (informative) Transient performances of ECTs
    Annex B (informative) Technical information for electronic
            current transformers with digital output
    Annex C (informative) Technical information for electronic
            current transformers with analogue output
    Annex D (normative) Frequency response and accuracy requirements
            on harmonics for electronic current and voltage transformer
    Annex E (informative) Graph explaining the accuracy requirements
    Bibliography
    Figures
    Tables

    Abstract - (Show below) - (Hide below)

    This part of IEC 60044 applies to newly manufactured electronic current transformers having an analogue voltage output or a digital output, for use with electrical measuring instruments and electrical protective devices at nominal frequencies from 15 Hz to 100 Hz.

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

    Committee TC 38
    Development Note Stability Date: 2016. (10/2012)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Superseded
    Superseded By

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

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    IEEE C37.241-2017 IEEE Guide for Application of Optical Instrument Transformers for Protective Relaying
    I.S. EN 61869-6:2016 INSTRUMENT TRANSFORMERS - PART 6: ADDITIONAL GENERAL REQUIREMENTS FOR LOW-POWER INSTRUMENT TRANSFORMERS
    NF EN 62271-205 : 2008 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 205: COMPACT SWITCHGEAR ASSEMBLIES FOR RATED VOLTAGES ABOVE 52 KV
    EN 62271-205:2008/corrigendum:2008 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 205: COMPACT SWITCHGEAR ASSEMBLIES FOR RATED VOLTAGES ABOVE 52 KV
    EN 61869-6:2016 Instrument transformers - Part 6: Additional general requirements for low-power instrument transformers
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    EN 60688:2013 Electrical measuring transducers for converting A.C. and D.C. electrical quantities to analogue or digital signals
    MIL-DTL-32483 Base Document:2013 Switchgear, Power, Hard-Mounted, Medium Voltage, Naval Shipboard
    MIL-DTL-917 Revision F:2014 ELECTRIC POWER EQUIPMENT, BASIC REQUIREMENTS FOR
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    11/30241212 DC : DRAFT JAN 2011 BS EN 60688 - ELECTRICAL MEASURING TRANSDUCERS FOR CONVERTING A.C. ELECTRICAL QUANTITIES TO ANALOGUE OR DIGITAL SIGNALS
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    I.S. EN 62689-2:2017 CURRENT AND VOLTAGE SENSORS OR DETECTORS, TO BE USED FOR FAULT PASSAGE INDICATION PURPOSES - PART 2: SYSTEM ASPECTS
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    CEI EN 61557-12 : 2013 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 12: PERFORMANCE MEASURING AND MONITORING DEVICES (PMD)
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    IEC TS 61462:1998 Composite insulators - Hollow insulators for use in outdoor and indoor electrical equipment - Definitions, test methods, acceptance criteria and design recommendations
    IEC 60050-601:1985 International Electrotechnical Vocabulary (IEV) - Part 601: Generation, transmission and distribution of electricity - General
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