SIST EN 60255-22-7:2003

SLOVENSKI SIST EN 60255-22-7:2003

STANDARD
september 2003
Electrical relays - Part 22-7: Electrical disturbance tests for measuring relays and
protection equipment - Power frequency immunity tests
ICS 29.120.70 Referenčna številka
SIST EN 60255-22-7:2003(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 60255-22-7
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2003

ICS 29.120.70


English version


Electrical relays
Part 22-7: Electrical disturbance tests for measuring relays
and protection equipment -
Power frequency immunity tests
(IEC 60255-22-7:2003)


Relais électriques Elektrische Relais
Partie 22-7: Essais d'influence électrique Teil 22-7: Prüfungen der elektrischen
concernant les relais de mesure Störfestigkeit von Messrelais
et dispositifs de protection - und Schutzeinrichtungen -
Essais d'immunité aux fréquences Prüfung der Störfestigkeit gegen
industrielles netzfrequente Störgrößen
(CEI 60255-22-7:2003) (IEC 60255-22-7:2003)




This European Standard was approved by CENELEC on 2003-05-01. 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


© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60255-22-7:2003 E

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EN 60255-22-7:2003 - 2 -
Foreword
The text of document 95/154/FDIS, future edition 1 of IEC 60255-22-7, prepared by IEC TC 95,
Measuring relays and protection equipment, was submitted to the IEC-CENELEC parallel vote and
was approved by CENELEC as EN 60255-22-7 on 2003-05-01.

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) 2004-02-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2006-05-01

Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annex A is informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60255-22-7:2003 was approved by CENELEC as a
European Standard without any modification.

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- 3 - EN 60255-22-7:2003
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 60255-6 1988 Electrical relays EN 60255-6 1994
(mod) Part 6: Measuring relays and protection + corr. February 1995
equipment

IEC 61000-4-16 1998 Electromagnetic compatibility (EMC) EN 61000-4-16 1998
Part 4-16: Testing and measurement
techniques - Test for immunity to
conducted, common mode disturbances
in the frequency range 0 Hz to 150 kHz
A1 2001 - -

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NORME CEI
INTERNATIONALE IEC
60255-22-7
INTERNATIONAL
Première édition
STANDARD
First edition
2003-04
Relais électriques –
Partie 22-7:
Essais d'influence électrique concernant les
relais de mesure et dispositifs de protection –
Essais d'immunité aux fréquences industrielles
Electrical relays –
Part 22-7:
Electrical disturbance tests for measuring
relays and protection equipment –
Power frequency immunity tests
 IEC 2003 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. 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
CODE PRIX
L
Commission Electrotechnique Internationale PRICE CODE
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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60255-22-7 IEC:2003 – 3 –
CONTENTS
FOREWORD . 5
1 Scope and object. . 7
2 Normative references. 7
3 Definitions . 9
4 Test severity levels . 9
5 Test equipment.11
5.1 Test generator .11
5.2 Verification of the test generator.11
5.3 Coupling networks .13
6 Test set-up. .13
6.1 Earthing connections .13
6.2 Auxiliary equipment .13
7 Test procedure. .13
8 Criteria for acceptance.15
9 Test report.15
Annex A (informative) Background information for power frequency tests.21
Figure 1 – Port tested in this standard for measuring relays and protection equipment. 9
Figure 2 – Example of Class A differential mode tests.17
Figure 3 – Example of Class B differential mode tests.17
Figure 4 – Example of common mode tests. .19

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60255-22-7 IEC:2003 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL RELAYS –
Part 22-7: Electrical disturbance tests for measuring relays
and protection equipment –
Power frequency immunity tests
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60255-22-7 has been prepared by IEC technical committee 95:
Measuring relays and protection equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
95/154/FDIS 95/157/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged
until 2007. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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60255-22-7 IEC:2003 – 7 –
ELECTRICAL RELAYS –
Part 22-7: Electrical disturbance tests for measuring relays
and protection equipment –
Power frequency immunity tests
1 Scope and object
This part of IEC 60255 is based on the concepts described in IEC 61000-4-16, referring to
that publication where applicable, and specifies the general requirements for power frequency
immunity tests for measuring relays and protection equipment for power system protection,
including the control, monitoring and process interface equipment used with those systems.
The objective of the tests is to confirm that the equipment under test (EUT) will operate
correctly when energised and
...