• IEC 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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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):  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    Superseded date:  27-04-2016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)

    BS EN 61869-6 : 2016 INSTRUMENT TRANSFORMERS - PART 6: ADDITIONAL GENERAL REQUIREMENTS FOR LOW-POWER INSTRUMENT TRANSFORMERS
    15/30328086 DC BS EN 61557-12. 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. Power metering and monitoring devices (PMD)
    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
    14/30284930 DC : 0 BS EN 62689-2 ED 1.0 - CURRENT AND VOLTAGE SENSORS OR DETECTORS TO BE USED FOR FAULT PASSAGE INDICATION PURPOSES - PART 2: GENERAL PRINCIPLES AND REQUIREMENTS
    BS EN 60255-1 : 2010 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 1: COMMON REQUIREMENTS
    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 61557-12:2008 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 Performance measuring and monitoring devices (PMD)
    17/30326671 DC : 0 BS ISO 27919-1 - CARBON DIOXIDE CAPTURE - PART 1: PERFORMANCE EVALUATION METHODS FOR POST-COMBUSTION CO[2] CAPTURE INTEGRATED WITH A POWER PLANT
    PREN 50463-2 : DRAFT 2015 RAILWAY APPLICATIONS - ENERGY MEASUREMENT ON BOARD TRAINS - PART 2: ENERGY MEASURING
    11/30245197 DC : 0 BS EN 60143-2 - SERIES CAPACITORS FOR POWER SYSTEMS - PART 2: PROTECTIVE EQUIPMENTS FOR SERIES CAPACITOR BANKS
    I.S. EN 60143-2:2013 SERIES CAPACITORS FOR POWER SYSTEMS - PART 2: PROTECTIVE EQUIPMENT FOR SERIES CAPACITOR BANKS (IEC 60143-2:2012 (EQV))
    11/30241212 DC : DRAFT JAN 2011 BS EN 60688 - ELECTRICAL MEASURING TRANSDUCERS FOR CONVERTING A.C. ELECTRICAL QUANTITIES TO ANALOGUE OR DIGITAL SIGNALS
    EN 62689-2 : 2017 CURRENT AND VOLTAGE SENSORS OR DETECTORS, TO BE USED FOR FAULT PASSAGE INDICATION PURPOSES - PART 2: SYSTEM ASPECTS (IEC 62689-2:2016)
    12/30268049 DC : 0 BS EN 62689-1 - CURRENT AND VOLTAGE SENSORS OR DETECTORS, TO BE USED FOR FAULT PASSAGE INDICATION PURPOSES - PART 1: GENERAL PRINCIPLES AND REQUIREMENTS
    BS EN 62271-205:2008 High-voltage switchgear and controlgear Compact switchgear assemblies for rated voltages above 52 kV
    PD IEC/TR 61850-90-4:2013 COMMUNICATION NETWORKS AND SYSTEMS FOR POWER UTILITY AUTOMATION - PART 90-4: NETWORK ENGINEERING GUIDELINES
    BS EN 60688:2013 Electrical measuring transducers for converting A.C. and D.C. electrical quantities to analogue or digital signals
    DD IEC TS 61850-2 : 2003 COMMUNICATION NETWORKS AND SYSTEMS IN SUBSTATIONS - PART 2: GLOSSARY
    BS EN 50463-2 : 2017 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 62689-1:2016 (published 2017-01) Current and voltage sensors or detectors, to be used for fault passage indication purposes 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
    14/30300261 DC : 0 BS EN 62689-1 ED 1.0 - CURRENT AND VOLTAGE SENSORS OR DETECTORS TO BE USED FOR FAULT PASSAGE INDICATION PURPOSES - PART 1: SYSTEM ASPECTS
    BS EN 62689-2:2017 Current and voltage sensors or detectors, to be used for fault passage indication purposes System aspects
    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
    03/113813 DC : 0 IEC 60034-2. ED.4 - ROTATING ELECTRICAL MACHINES - PART 2: METHODS FOR DETERMINING LOSSES AND EFFICIENCY FROM TESTS (EXCLUDING MACHINES FOR TRACTION VEHICLES)
    IEC 61557-12:2007 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)
    BS EN 60143-2:2013 Series capacitors for power systems Protective equipment for series capacitor banks
    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
    EN 50463-2:2017 (edition 2) Railway applications - Energy measurement on board trains - Part 2: Energy measuring
    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)
    CEI EN 60143-2 : 2014 SERIES CAPACITORS FOR POWER SYSTEMS - PART 2: PROTECTIVE EQUIPMENT FOR SERIES CAPACITOR BANKS
    IEC TS 61850-2:2003 Communication networks and systems in substations - Part 2: Glossary
    IEEE C 57.13-1 : 2006 FIELD TESTING OF RELAYING CURRENT TRANSFORMERS
    I.S. EN 62689-2:2017 CURRENT AND VOLTAGE SENSORS OR DETECTORS, TO BE USED FOR FAULT PASSAGE INDICATION PURPOSES - PART 2: SYSTEM ASPECTS
    IEEE C37.241 : 2017 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
    I.S. EN 60688:2013 ELECTRICAL MEASURING TRANSDUCERS FOR CONVERTING A.C. AND D.C. ELECTRICAL QUANTITIES TO ANALOGUE OR DIGITAL SIGNALS (IEC 60688:2012 (EQV))
    I.S. EN 61557-12:2008 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)
    NF EN 60255-1 : 2010 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 1: COMMON REQUIREMENTS
    CEI EN 60255-1 : 2011 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 1: COMMON REQUIREMENTS
    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)
    IEC 62689-2:2016 Current and voltage sensors or detectors, to be used for fault passage indication purposes - Part 2: System aspects
    CEI EN 62271-205 : 2012 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 205: COMPACT SWITCHGEAR ASSEMBLIES FOR RATED VOLTAGES ABOVE 52 KV
    NF EN 62271-205 : 2008 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 205: COMPACT SWITCHGEAR ASSEMBLIES FOR RATED VOLTAGES ABOVE 52 KV
    I.S. EN 60255-1:2010 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 1: COMMON REQUIREMENTS
    I.S. EN 50463-2:2017 RAILWAY APPLICATIONS - ENERGY MEASUREMENT ON BOARD TRAINS - PART 2: ENERGY MEASURING
    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
    IEC 62888-2:2018 Railway applications - Energy measurement on board trains - Part 2: Energy measurement
    IEC 61972:2002 Method for determining losses and efficiency of three-phase cage induction motors
    I.S. EN 62271-205:2008 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 205: COMPACT SWITCHGEAR ASSEMBLIES FOR RATED VOLTAGES ABOVE 52 KV
    IEC 61869-9:2016 Instrument transformers - Part 9: Digital interface for instrument transformers
    IEC 62689-1:2016 Current and voltage sensors or detectors, to be used for fault passage indication purposes - Part 1: General principles and requirements
    IEC 60255-1:1967 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 1: COMMON REQUIREMENTS
    IEC 60688:2012 Electrical measuring transducers for converting A.C. and D.C. electrical quantities to analogue or digital signals
    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
    IEC 60143-2:2012 Series capacitors for power systems - Part 2: Protective equipment for series capacitor banks
    IEC TR 61869-103:2012 Instrument transformers - The use of instrument transformers for power quality measurement
    IEC 62271-205:2008 High-voltage switchgear and controlgear - Part 205: Compact switchgear assemblies for rated voltages above 52 kV
    UNE-EN 60688:2013 Electrical measuring transducers for converting A.C. and D.C. electrical quantities to analogue or digital signals
    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
    EN 60688:2013 ELECTRICAL MEASURING TRANSDUCERS FOR CONVERTING A.C. AND D.C. ELECTRICAL QUANTITIES TO ANALOGUE OR DIGITAL SIGNALS (IEC 60688:2012)
    EN 50327 : 2003 AMD 1 2005 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - HARMONISATION OF THE RATED VALUES FOR CONVERTER GROUPS AND TESTS ON CONVERTER GROUPS
    EN 61557-12 : 2008 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)
    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 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 - SECTIONAL SPECIFICATION - FIBRE OPTIC CONNECTOR TYPE BFOC/2,5
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    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
    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
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    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
    IEC 60304:1982 STANDARD COLOURS FOR INSULATION FOR LOW-FREQUENCY CABLES AND WIRES
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    EIA 422 : A1978 ELECTRICAL CHARACTERISTICS OF BALANCED VOLTAGE DIGITAL INTERFACE CIRCUITS
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    IEC 60056:1987 High-voltage alternating-current circuit-breakers
    IEC 60376:2005 SPECIFICATION OF TECHNICAL GRADE SULPHUR HEXAFLUORIDE (SF[6]) AND COMPLEMENTARY GASES TO BE USED IN ITS MIXTURES FOR USE IN ELECTRICAL EQUIPMENT
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