• EN 60044-8:2002

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Instrument transformers - Part 8: Electronic current transformers

    Available format(s): 

    Superseded date:  01-12-2016

    Language(s): 

    Published date:  10-09-2002

    Publisher:  European Committee for Standards - Electrical

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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 Ratings 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
            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 test 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 performance 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
    Annex ZA (normative) Normative references to international
             publications with their corresponding European
             publications
    Bibliography

    Abstract - (Show below) - (Hide below)

    This part of EN 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 CLC/TC 38
    Development Note Superseded by EN 61869-6 but remains current and will be withdrawn until all the relevant parts of EN 61869 series will be published. (01/2017)
    Document Type Standard
    Publisher European Committee for Standards - Electrical
    Status Superseded
    Superseded By

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

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    PREN 50463-2 : DRAFT 2015 RAILWAY APPLICATIONS - ENERGY MEASUREMENT ON BOARD TRAINS - PART 2: ENERGY MEASURING
    15/30329546 DC : 0 BS EN 50463-2 - RAILWAY APPLICATIONS - ENERGY MEASUREMENT ON BOARD TRAINS - PART 2: ENERGY MEASURING
    BS EN 50463-2 : 2017 RAILWAY APPLICATIONS - ENERGY MEASUREMENT ON BOARD TRAINS - PART 2: ENERGY MEASURING
    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 (IEC 61869-6:2016)
    EN 61850-9-1:2003 COMMUNICATION NETWORKS AND SYSTEMS IN SUBSTATIONS - PART 9-1: SPECIFIC COMMUNICATION SERVICE MAPPING (SCSM) - SAMPLED VALUES OVER SERIAL UNIDIRECTIONAL MULTIDROP POINT TO POINT LINK
    I.S. EN 50327:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - HARMONISATION OF THE RATED VALUES FOR CONVERTER GROUPS AND TESTS ON CONVERTER GROUPS
    UNE-EN 61557-12:2010 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures -- Part 12: Performance measuring and monitoring devices (PMD)
    I.S. EN 62689-1:2016 CURRENT AND VOLTAGE SENSORS OR DETECTORS, TO BE USED FOR FAULT PASSAGE INDICATION PURPOSES - PART 1: GENERAL PRINCIPLES AND REQUIREMENTS
    BS EN 50327:2003 Railway applications. Fixed installations. Harmonisation of the rated values for converter groups and tests on converter groups
    CEI EN 61850-9-1 : 2015 COMMUNICATION NETWORKS AND SYSTEMS IN SUBSTATIONS - PART 9-1: SPECIFIC COMMUNICATION SYSTEM MAPPINGS (SCSM) - SAMPLED VALUES OVER SERIAL UNIDIRECTIONAL MULTIDROP POINT TO POINT LINK
    BS EN 60143-2:2013 Series capacitors for power systems Protective equipment for series capacitor banks
    EN 50463-2:2017 (edition 2) Railway applications - Energy measurement on board trains - Part 2: Energy measuring
    CEI EN 60143-2 : 2014 SERIES CAPACITORS FOR POWER SYSTEMS - PART 2: PROTECTIVE EQUIPMENT FOR SERIES CAPACITOR BANKS
    I.S. EN 62271-205:2008 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 205: COMPACT SWITCHGEAR ASSEMBLIES FOR RATED VOLTAGES ABOVE 52 KV
    BS EN 61850-9-1:2003 COMMUNICATION NETWORKS AND SYSTEMS IN SUBSTATIONS - PART 9-1: SPECIFIC COMMUNICATION SERVICE MAPPING (SCSM) - SAMPLED VALUES OVER SERIAL UNIDIRECTIONAL MULTIDROP POINT TO POINT LINK
    EN 62689-1 : 2016 CURRENT AND VOLTAGE SENSORS OR DETECTORS, TO BE USED FOR FAULT PASSAGE INDICATION PURPOSES - PART 1: GENERAL PRINCIPLES AND REQUIREMENTS (IEC 62689-1:2016)
    BS EN 62271-205:2008 High-voltage switchgear and controlgear Compact switchgear assemblies for rated voltages above 52 kV
    BS EN 62689-1:2016 (published 2017-01) Current and voltage sensors or detectors, to be used for fault passage indication purposes General principles and requirements
    I.S. EN 61850-9-1:2003 COMMUNICATION NETWORKS AND SYSTEMS IN SUBSTATIONS - PART 9-1: SPECIFIC COMMUNICATION SERVICE MAPPING (SCSM) - SAMPLED VALUES OVER SERIAL UNIDIRECTIONAL MULTIDROP POINT TO POINT LINK
    CEI EN 60255-1 : 2011 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 1: COMMON REQUIREMENTS
    CEI EN 62271-205 : 2012 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 205: COMPACT SWITCHGEAR ASSEMBLIES FOR RATED VOLTAGES ABOVE 52 KV
    BS EN 61869-6 : 2016 INSTRUMENT TRANSFORMERS - PART 6: ADDITIONAL GENERAL REQUIREMENTS FOR LOW-POWER INSTRUMENT TRANSFORMERS
    I.S. EN 60143-2:2013 SERIES CAPACITORS FOR POWER SYSTEMS - PART 2: PROTECTIVE EQUIPMENT FOR SERIES CAPACITOR BANKS (IEC 60143-2:2012 (EQV))
    I.S. EN 60255-1:2010 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 1: COMMON REQUIREMENTS
    EN 50327 : 2003 AMD 1 2005 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - HARMONISATION OF THE RATED VALUES FOR CONVERTER GROUPS AND TESTS ON CONVERTER GROUPS
    EN 60255-1 : 2010 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 1: COMMON REQUIREMENTS
    EN 60143-2:2013 SERIES CAPACITORS FOR POWER SYSTEMS - PART 2: PROTECTIVE EQUIPMENT FOR SERIES CAPACITOR BANKS (IEC 60143-2:2012)

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    IEC 61025:2006 Fault tree analysis (FTA)
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    IEC 60480:2004 Guidelines for the checking and treatment of sulfur hexafluoride (SF6) taken from electrical equipment and specification for its re-use
    IEC 60874-10:1992 Connectors for optical fibres and cables - Part 10: Sectional specification - Fibre optic connector type BFOC/2,5
    IEC 61000-4-10 : 2.0 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-10: TESTING AND MEASUREMENT TECHNIQUES - DAMPED OSCILLATORY MAGNETIC FIELD IMMUNITY TEST
    IEC 60255-22-1:2007 Measuring relays and protection equipment - Part 22-1: Electrical disturbance tests - 1 MHz burst immunity tests
    EN 50160 : 2010 AMD 1 2015 VOLTAGE CHARACTERISTICS OF ELECTRICITY SUPPLIED BY PUBLIC ELECTRICITY NETWORKS
    IEC 60038:2009 IEC standard voltages
    IEC 60270:2000+AMD1:2015 CSV High-voltage test techniques - Partial discharge measurements
    IEC 60044-7:1999 Instrument transformers - Part 7: Electronic voltage transformers
    EN 60068-2-75:2014 ENVIRONMENTAL TESTING - PART 2-75: TESTS - TEST EH: HAMMER TESTS (IEC 60068-2-75:2014)
    IEC 60028:1925 International standard of resistance for copper
    IEC 61850-9-1:2003 Communication networks and systems in substations - Part 9-1: Specific Communication Service Mapping (SCSM) - Sampled values over serial unidirectional multidrop point to point link
    EN 61000-4-1:2007 Electromagnetic compatibility (EMC) - Part 4-1: Testing and measurement techniques - Overview of IEC 61000-4 series
    IEC 61000-4-4 : 3.0EN+(REDLINE+VERSION) ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-4: TESTING AND MEASUREMENT TECHNIQUES - ELECTRICAL FAST TRANSIENT/BURST IMMUNITY TEST
    IEC 61000-4-1:2006 Electromagnetic compatibility (EMC) - Part 4-1: Testing and measurement techniques - Overview of IEC 61000-4 series
    EN 61000-4-11:2004/A1:2017 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-11: TESTING AND MEASUREMENT TECHNIQUES - VOLTAGE DIPS, SHORT INTERRUPTIONS AND VOLTAGE VARIATIONS IMMUNITY TESTS (IEC 61000-4-11:2004/A1:2017)
    IEC 60812:2006 Analysis techniques for system reliability - Procedure for failure mode and effects analysis (FMEA)
    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
    EN 61000-4-9:2016 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-9: TESTING AND MEASUREMENT TECHNIQUES - IMPULSE MAGNETIC FIELD IMMUNITY TEST (IEC 61000-4-9:2016)
    IEC 60304:1982 Standard colours for insulation for low-frequency cables and wires
    IEC 61000-4-11:2004+AMD1:2017 CSV Electromagnetic compatibility (EMC) - Part 4-11: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests
    IEC 60255-24:2013 Measuring relays and protection equipment - Part 24: Common format for transient data exchange (COMTRADE) for power systems
    HD 625.1 : 200S1 INSULATION COORDINATION FOR EQUIPMENT WITHIN LOW-VOLTAGE SYSTEMS - PRINCIPLES, REQUIREMENTS AND TESTS
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    HD 485 : 200S1 ANALYSIS TECHNIQUES FOR SYSTEM RELIABILITY - PROCEDURE FOR FAILURE MODE AND EFFECTS ANALYSIS (FMEA)
    EIA 422 : A1978 ELECTRICAL CHARACTERISTICS OF BALANCED VOLTAGE DIGITAL INTERFACE CIRCUITS
    EN 60870-5-1 : 1993 TELECONTROL EQUIPMENT AND SYSTEMS - TRANSMISSION PROTOCOLS - TRANSMISSION FRAME FORMATS
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    EN 61000-4-2:2009 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-2: TESTING AND MEASUREMENT TECHNIQUES - ELECTROSTATIC DISCHARGE IMMUNITY TEST
    EN 61000-4-7:2002/A1:2009 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-7: TESTING AND MEASUREMENT TECHNIQUES - GENERAL GUIDE ON HARMONICS AND INTERHARMONICS MEASUREMENTS AND INSTRUMENTATION, FOR POWER SUPPLY SYSTEMS AND EQUIPMENT CONNECTED THERETO (IEC 61000-4-7:2002/A1:2008)
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    IEC 61508-3:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 3: Software requirements (see Functional Safety and IEC 61508)
    EN 60707 : 1999 FLAMMABILITY OF SOLID NON-METALLIC MATERIALS WHEN EXPOSED TO FLAME SOURCES - LIST OF TEST METHODS
    IEC 60056:1987 High-voltage alternating-current circuit-breakers
    IEC 60376:2005 Specification of technical grade sulfur hexafluoride (SF6) for use in electrical equipment
    IEC 60567:2011 Oil-filled electrical equipment - Sampling of gases and analysis of free and dissolved gases - Guidance
    HD 588.1 : S1 AMD 1 HIGH VOLTAGE TEST TECHNIQUES - GENERAL DEFINITIONS AND TEST REQUIREMENTS
    EN 60044-6 : 1999 INSTRUMENT TRANSFORMERS - REQUIREMENTS FOR PROTECTIVE CURRENT TRANSFORMERS FOR TRANSIENT PERFORMANCE
    IEC 61166:1993 High-voltage alternating current circuit-breakers - Guide for seismic qualification of high-voltage alternating current circuit-breakers
    EN 60255-5 : 2001 ELECTRICAL RELAYS - INSULATION COORDINATION FOR MEASURING RELAYS AND PROTECTION EQUIPMENT - REQUIREMENTS AND TESTS
    IEC 60694:1996+AMD1:2000+AMD2:2001 CSV Common specifications for high-voltage switchgear and controlgear standards
    EN 61000-4-3 : 2006 AMD 2 2010 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-3: TESTING AND MEASUREMENT TECHNIQUES - RADIATED, RADIO-FREQUENCY, ELECTROMAGNETIC FIELD IMMUNITY TEST
    IEC 60085:2007 Electrical insulation - Thermal evaluation and designation
    IEC 60172:2015 Test procedure for the determination of the temperature index of enamelled and tape wrapped winding wires
    IEC 60296:2012 RLV Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear
    IEC 60721-2-2:2012 Classification of environmental conditions - Part 2-2: Environmental conditions appearing in nature - Precipitation and wind
    IEC 61000-4-9 : 2.0 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-9: TESTING AND MEASUREMENT TECHNIQUES - IMPULSE MAGNETIC FIELD IMMUNITY TEST
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    IEC 60044-6:1992 Instrument transformers - Part 6: Requirements for protective current transformers for transient performance
    IEC 60437:1997 Radio interference test on high-voltage insulators
    EN 60694:1996/A2:2001 COMMON SPECIFICATIONS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
    IEC 60121:1960 Recommendation for commercial annealed aluminium electrical conductor wire
    HD 566 : 200S1 THERMAL EVALUATION AND CLASSIFICATION OF ELECTRICAL INSULATION
    IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
    IEC 60044-1:1996+AMD1:2000+AMD2:2002 CSV Instrument transformers - Part 1: Current transformers
    EN 60068-2-17 : 1994 BASIC ENVIRONMENTAL TESTING - TEST Q: SEALING
    EN 61000-4-8:2010 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-8: TESTING AND MEASUREMENT TECHNIQUES - POWER FREQUENCY MAGNETIC FIELD IMMUNITY TEST
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    IEC 61000-4-3:2006+AMD1:2007+AMD2:2010 CSV Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
    IEC 60376B:1974 Second supplement: Clause 26
    IEC 60255-5:2000 Electrical Relays - Part 5: Insulation coordination for measuring relays and protection equipment - Requirements and tests
    EN 60071-1:2006/A1:2010 INSULATION CO-ORDINATION - PART 1: DEFINITIONS, PRINCIPLES AND RULES
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    IEC 60050-321:1986 International Electrotechnical Vocabulary (IEV) - Part 321: Instrument transformers
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    IEC 60068-2-75:2014 Environmental testing - Part 2-75: Tests - Test Eh: Hammer tests
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    IEC 60721-2-4:1987+AMD1:1988 CSV Classification of environmental conditions - Part 2-4: Environmental conditions appearing in nature - Solar radiation and temperature
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