EN 60044-8:2002

SLOVENSKI SIST EN 60044-8:2003

STANDARD
september 2003
Instrument transformers - Part 8: Electronic current transformers
ICS 17.220.20 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60044-8
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2002
ICS 17.220.20
English version
Instrument transformers
Part 8: Electronic current transformers
(IEC 60044-8:2002)
Transformateurs de mesure Messwandler
Partie 8: Transformateurs de courant Teil 8: Elektronische Stromwandler
électroniques (IEC 60044-8:2002)
(CEI 60044-8:2002)
This European Standard was approved by CENELEC on 2002-09-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60044-8:2002 E
Foreword
The text of document 38/280/FDIS, future edition 1 of IEC 60044-8, prepared by IEC TC 38,
Instrument transformers, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60044-8 on 2002-09-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-09-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annexes D and ZA are normative and annexes A, B, C and E are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60044-8:2002 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60038 NOTE Harmonized as HD 472 S1:1989 (modified).
IEC 60068-2 Series NOTE Harmonized in EN 60068-2/HD 323.2 Series (not modified).
IEC 60071-2 NOTE Harmonized as EN 60071-2:1997 (not modified).
IEC 60255-24 NOTE Harmonized as EN 60255-24:2001 (not modified).
IEC 60270 NOTE Harmonized as EN 60270:2001 (not modified).
IEC 60437 NOTE Harmonized as EN 60437:1997 (not modified).
IEC 60567 NOTE Harmonized as EN 60567:1992 (not modified).
IEC 60599 NOTE EN 60599:1999 is based on IEC 60599:1999 (not modified).
IEC 60721-2-2 NOTE Harmonized as HD 478.2.2 S1:1990 (not modified).
IEC 60721-2-4 NOTE Harmonized as HD 478.2.4 S1:1989 (not modified).
IEC 61508-1 NOTE Harmonized as EN 61508-1:2001 (not modified).
IEC 61508-3 NOTE Harmonized as EN 61508-3:2001 (not modified).
IEC 61754-1 NOTE Harmonized as EN 61754-1:1997 (not modified).
IEC 61754-15 NOTE Harmonized as EN 61754-15:2001 (not modified).
__________
- 3 - EN 60044-8:2002
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60028 1925 International standard of resistance for--
copper
1) 2)
IEC 60044-1 - Instrument transformers EN 60044-1 1999
Part 1: Current transformers
1) 2)
IEC 60044-6 - Part 6: Requirements for protective EN 60044-6 1999
current transformers for transient
performance
1) 2)
IEC 60044-7 - Part 7: Electronic voltage transformers EN 60044-7 2000
IEC 60050-161 1990 International Electrotechnical --
Vocabulary (IEV)
Chapter 161: Electromagnetic
compatibility
IEC 60050-321 1986 International electrotechnical vocabulary--
Chapter 321: Instrument transformers
IEC 60050-601 1985 Chapter 601: Generation, transmission--
and distribution of electricity - General
IEC 60050-604 1987 Chapter 604: Generation, transmission--
and distribution of electricity - Operation
1)
3)
IEC 60056 - High-voltage alternating-current circuit- HD 348 S7 1998
breakers
IEC 60060-1 1989 High-voltage test techniques HD 588.1 S1 1991
+ corr. March 1990 Part 1: General definitions and test
requirements
1)
Undated reference.
2)
Valid edition at date of issue.
3)
HD 348 S7:1998 is superseded by EN 62271-100:2001, which is based on IEC 62271-100:2001.

Publication Year Title EN/HD Year
IEC 60068-2-6 1995 Environmental testing EN 60068-2-6 1995
+ corr. March 1995 Part 2: Tests - Test Fc: Vibration
(sinusoidal)
1) 2)
IEC 60068-2-17 - Part 2: Tests - Test Q: Sealing EN 60068-2-17 1994
1) 2)
IEC 60068-2-75 - Part 2-75: Tests - Test Eh: Hammer EN 60068-2-75 1997
tests
IEC 60071-1 1993 Insulation co-ordination EN 60071-1 1995
Part 1: Definitions, principles and rules
IEC 60085 1984 Thermal evaluation and classification of HD 566 S1 1990
electrical insulation
1)
IEC 60121 - Recommendation for commercial --
annealed aluminium electrical conductor
wire
IEC 60255-5 2000 Electrical relays EN 60255-5 2001
Part 5: Insulation coordination for
measuring relays and protection
equipment - Requirements and tests
IEC 60255-22-1 1988 Part 22: Electrical disturbance tests for--
measuring relays and protection
equipment -
Section 1: 1 MHz burst disturbance
tests
IEC 60296 1982 Specification for unused mineral --
insulating oils for transformers and
switchgear
IEC 60304 1982 Standard colours for insulation for low- HD 402 S2 1984
frequency cables and wires
IEC 60376 1971 Specification and acceptance of new--
sulphur hexafluoride
IEC 60376B 1974 Second supplement: Clause 26 - -
IEC 60417 Series Graphical symbols for use on equipment EN 60417 Series
IEC 60480 1974 Guide to the checking of sulphur --
hexafluoride (SF6) taken from electrical
equipment
1) 2)
IEC 60529 - Degrees of protection provided by EN 60529 1991
enclosures (IP Code) + corr. May 1993
IEC 60664-1 1992 Insulation coordination for equipment HD 625.1 S1 1996
(mod) within low-voltage systems + corr. November 1996
Part 1: Principles, requirements and
tests
- 5 - EN 60044-8:2002
Publication Year Title EN/HD Year
IEC 60694 1996 Common specifications for high-voltage EN 60694 1996
switchgear and controlgear standards + corr. May 1999
IEC 60707 1999 Flammability of solid non-metallic EN 60707 1999
materials when exposed to flame
sources - List of test methods
IEC 60721-3-3 1994 Classification of environmental EN 60721-3-3 1995
conditions
Part 3: Classification of groups of
environmental parameters and their
severities -
Section 3: Stationary use at
weatherprotected locations
IEC 60721-3-4 1995 Section 4: Stationary use at non- EN 60721-3-4 1995
weatherprotected locations
IEC 60794 Series Optical fibre cables EN 60794 Series
IEC 60812 1985 Analysis techniques for system HD 485 S1 1987
reliability - Procedure for failure mode
and effects analysis (FMEA)
IEC 60815 1986 Guide for the selection of insulators in--
respect of polluted conditions
IEC 60870-5-1 1990 Telecontrol equipment and systems EN 60870-5-1 1993
Part 5: Transmission protocols -
Section 1: Transmission frame formats
IEC 61000-4-1 2000 Electromagnetic compatibility (EMC) EN 61000-4-1 2000
Part 4-1: Testing and measurement
techniques - Overview of IEC 61000-4
series
1) 2)
IEC 61000-4-2 - Part 4-2: Testing and measurement EN 61000-4-2 1995
techniques - Electrostatic discharge
immunity test
1) 2)
IEC 61000-4-3 - Part 4-3: Testing and measurement EN 61000-4-3 2002
techniques - Radiated, radio-frequency,
electromagnetic field immunity test
IEC 61000-4-4 1995 Part 4-4: Testing and measurement EN 61000-4-4 1995
techniques - Electrical fast
transient/burst immunity test
1) 2)
IEC 61000-4-5 - Part 4-5: Testing and measurement EN 61000-4-5 1995
techniques - Surge immunity test
IEC 61000-4-7 1991 Part 4-7: Testing and measurement EN 61000-4-7 1993
techniques - General guide on
harmonics and interharmonics
measurements and instrumentation, for
power supply systems and equipment
connected thereto
Publication Year Title EN/HD Year
1) 2)
IEC 61000-4-8 - Part 4-8: Testing and measurement EN 61000-4-8 1993
techniques - Power frequency magnetic
field immunity test
1) 2)
IEC 61000-4-9 - Part 4-9: Testing and measurement EN 61000-4-9 1993
techniques - Pulse magnetic field
immunity test
1) 2)
IEC 61000-4-10 - Part 4-10: Testing and measurement EN 61000-4-10 1993
techniques - Damped oscillatory
magnetic field immunity test
1) 2)
IEC 61000-4-11 - Part 4-11: Testing and measurement EN 61000-4-11 1994
techniques - Voltage dips, short
interruptions and voltage variations
immunity tests
1) 2)
IEC 61000-4-12 - Part 4-12: Testing and measurement EN 61000-4-12 1995
techniques - Oscillatory waves immunity
test
1) 2)
IEC 61000-4-13 - Part 4-13: Testing and measurement EN 61000-4-13 2002
techniques - Harmonics and
interharmonics including mains
signalling at a.c. power port, low
frequency immunity tests
IEC 61000-4-29 2000 Part 4-29: Testing and measurement EN 61000-4-29 2000
techniques - Voltage dips, short
interruptions and voltage variations on
d.c. input power port immunity tests
IEC 61025 1990 Fault tree analysis (FTA) HD 617 S1 1992
IEC 61166 1993 High-voltage alternating current circuit- EN 61166 1993
breakers - Guide for seismic
qualification of high-voltage alternating
current circuit-breakers
IEC/TS 61462 1998 Composite insulators - Hollow insulators--
for use in outdoor and indoor electrical
equipment - Definitions, test methods,
acceptance criteria and design
recommendations
1) 2)
IEC 61850-3 - Communication networks and systems EN 61850-3 2002
in substations
Part 3: General requirements
4)
IEC 61850-9-1 - Part 9-1: Specific communication --
system mappings (SCSM) - Serial
unidirectional multidrop point to point
link
4)
To be published.
- 7 - EN 60044-8:2002
Publication Year Title EN/HD Year
CISPR 11 1997 Industrial, scientific and medical (ISM) EN 55011 1998
(mod) radio-frequency equipment - Radio
disturbance characteristics - Limits and
methods of measurement
A1 1999 A1 1999
1)
EIA RS-485 - Standard for electrical characteristics of--
generators and receivers for use in
balanced digital multipoint systems
- - Voltage characteristics of electricity EN 50160 1999
supplied by public distribution systems

INTERNATIONAL IEC
STANDARD
60044-8
First edition
2002-07
Instrument transformers –
Part 8:
Electronic current transformers
Transformateurs de mesure –
Partie 8:
Transformateurs de courant électroniques
 IEC 2002  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
XF
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 60044-8  IEC:2002(E)
CONTENTS
FOREWORD . 6
1 Scope . 7
1.1 General . 7
1.2 General block diagram of electronic current transformers . 8
1.3 General block diagram of electronic transformers with a digital output . 9
2 Normative references. 9
3 Definitions.12
3.1 General definitions.12
3.2 Additional definitions for measuring electronic current transformers.19
3.3 Additional definitions for protective electronic current transformers.19
3.4 Additional definitions for digital output .22
3.5 Additional definitions for analogue voltage output .23
3.6 Index of main definitions and abbreviations .23
4 Normal and special service conditions .
...