EN 60044-8:2002

Superseded

Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Instrument transformers - Part 8: Electronic current transformers

Available format(s):

Superseded date: 30-11-2016

Language(s):

Published date: 09-09-2002

Publisher: European Committee for Standards - Electrical

Pure ENs are not available for sale, please purchase a suitable national adoption

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
ISBN
Pages
Published
Publisher	European Committee for Standards - Electrical
Status	Superseded
Superseded By	EN IEC 61869-9:2019

National Adoptions - (Show below) - (Hide below)

Equivalent Standard(s)	Relationship
NF EN 60044-8 : 2006	Identical
PN EN 60044-8 : 2006	Identical
I.S. EN 60044-8:2002	Identical
NEN EN IEC 60044-8 : 2003	Identical
IEC 60044-8:2002	Identical
VDE 0414-44-8 : 2003	Identical
BS EN 60044-8:2002	Identical
UNE-EN 60044-8:2005	Identical
CEI EN 60044-8 : 2004	Identical
DIN EN 60044-8 : 2003	Identical
NBN EN 60044-8 : 2003	Identical

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

UNE-EN 62271-205:2011	High-voltage switchgear and controlgear -- Part 205: Compact switchgear assemblies for operation at rated voltages above 52 kV
BS EN 60255-1:2010	Measuring relays and protection equipment Common requirements
I.S. EN 50463-2:2017	RAILWAY APPLICATIONS - ENERGY MEASUREMENT ON BOARD TRAINS - PART 2: ENERGY MEASURING
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 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
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	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. 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
BS EN 62271-205:2008	High-voltage switchgear and controlgear Compact switchgear assemblies for rated voltages above 52 kV
BS EN 62689-1:2016	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
UNE-EN 60255-1:2010	Measuring relays and protection equipment -- Part 1: Common requirements
BS EN 61869-6:2016	Instrument transformers 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

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

IEC 61025:2006	Fault tree analysis (FTA)
IEC 61000-4-8 : 2.0	ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-8: TESTING AND MEASUREMENT TECHNIQUES - POWER FREQUENCY MAGNETIC FIELD IMMUNITY TEST
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 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 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
IEC 60599:2015	Mineral oil-filled electrical equipment in service - Guidance on the interpretation of dissolved and free gases analysis
HD 485 : 200S1	ANALYSIS TECHNIQUES FOR SYSTEM RELIABILITY - PROCEDURE FOR FAILURE MODE AND EFFECTS ANALYSIS (FMEA)
EN 60870-5-1:1993	Telecontrol equipment and systems - Part 5: Transmission protocols - Section 1: Transmission frame formats
EN 61166:1993	High-voltage alternating current circuit-breakers - Guide for seismic qualification of high-voltage alternating current circuit-breakers
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)
IEC 61000-4-12 : 3.0	ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-12: TESTING AND MEASUREMENT TECHNIQUES - RING WAVE IMMUNITY TEST
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 - Part 5: 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
EN 60044-7:2000	Instrument transformers - Part 7: Electronic voltage transformers
IEC 60707:1999	Flammability of solid non-metallic materials when exposed to flame sources - List of test methods
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	Environmental testing - Part 2: Tests - Test Q: Sealing
EN 61000-4-8:2010	Electromagnetic compatibility (EMC) - Part 4-8: Testing and measurement techniques - Power frequency magnetic field immunity test
IEC 60068-2-17:1994	Basic environmental testing procedures - Part 2-17: Tests - Test Q: Sealing
EN 61850-3:2014	Communication networks and systems for power utility automation - Part 3: General requirements
HD 348 : 200S7	HIGH-VOLTAGE ALTERNATING-CURRENT CIRCUIT-BREAKERS
EN 61000-4-12:2017	Electromagnetic compatibility (EMC) - Part 4-12: Testing and measurement techniques - Ring wave immunity test
IEC 61000-4-2:2008	Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test
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
HD 617 : 200S1	FAULT TREE ANALYSIS (FTA)
IEC 61850-7-4:2010	Communication networks and systems for power utility automation - Part 7-4: Basic communication structure - Compatible logical node classes and data object classes
IEC 60050-321:1986	International Electrotechnical Vocabulary (IEV) - Part 321: Instrument transformers
HD 402 : 200S2	STANDARD COLOURS FOR INSULATION FOR LOW-FREQUENCY CABLES AND WIRES
IEC 60071-2:1996	Insulation co-ordination - Part 2: Application guide
IEC 61000-4-7:2002+AMD1:2008 CSV	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 60721-3-3:1994+AMD1:1995+AMD2:1996 CSV	Classification of environmental conditions - Part 3-3: Classification of groups of environmental parameters and their severities - Stationary use at weatherprotected locations
EN 60068-2-6:2008	Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)
IEC 60068-2-75:2014	Environmental testing - Part 2-75: Tests - Test Eh: Hammer tests
EN 60044-1:1999/A2:2003	INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
EN 61000-4-4:2012	ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-4: TESTING AND MEASUREMENT TECHNIQUES - ELECTRICAL FAST TRANSIENT/BURST IMMUNITY TEST (IEC 61000-4-4:2012)
CISPR 11:2015 RLV	Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement
IEC 60721-2-4:1987+AMD1:1988 CSV	Classification of environmental conditions - Part 2-4: Environmental conditions appearing in nature - Solar radiation and temperature
TIA 485 : A1998(R2012)	ELECTRICAL CHARACTERISTICS OF GENERATORS AND RECEIVERS FOR USE IN BALANCED DIGITAL MULTIPOINT SYSTEMS
IEC 60870-5-1:1990	Telecontrol equipment and systems. Part 5: Transmission protocols - Section One: Transmission frame formats
IEC 61508-1:2010	Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 1: General requirements (see Functional Safety and IEC 61508)
EN 60529:1991/AC:2016-12	DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
IEC 60060-1:2010	High-voltage test techniques - Part 1: General definitions and test requirements
IEC 61754-15:2009	Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 15: Type LSH connector family
IEC 60071-1:2006+AMD1:2010 CSV	Insulation co-ordination - Part 1: Definitions, principles and rules
IEC 61000-4-29:2000	Electromagnetic compatibility (EMC) - Part 4-29: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations on d.c. input power port immunity tests
IEC 61754-1:2013	Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 1: General and guidance
EN 60721-3-4:1995/A1:1997	CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 3: CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - SECTION 4: STATIONARY USE AT NON-WEATHER-PROTECTED LOCATIONS
IEC 60664-1:2007	Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
EN 61000-4-13:2002/A2:2016	ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-13: TESTING AND MEASUREMENT TECHNIQUES - HARMONICS AND INTERHARMONICS INCLUDING MAINS SIGNALLING AT A.C. POWER PORT, LOW FREQUENCY IMMUNITY TESTS (IEC 61000-4-13:2002/A2:2015)
IEC 61000-4-13:2002+AMD1:2009+AMD2:2015 CSV	Electromagnetic compatibility (EMC) - Part 4-13: Testing and measurement techniques - Harmonics and interharmonics includingmains signalling at a.c. power port, low frequency immunity tests
IEC 61850-3:2013	Communication networks and systems for power utility automation - Part 3: General requirements
EN 61000-4-10:2017	Electromagnetic compatibility (EMC) - Part 4-10: Testing and measurement techniques - Damped oscillatory magnetic field immunity test
EN 61000-4-29:2000	Electromagnetic compatibility (EMC) - Part 4-29: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations on d.c. input power port immunity tests
EN 60721-3-3 : 95 AMD 2 97	CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - STATIONARY USE AT WEATHER-PROTECTED LOCATIONS

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