EN 60255-26:2005

SLOVENSKI SIST EN 60255-26:2005

STANDARD
december 2005
Električni releji – 26. del: Zahteve za elektromagnetno združljivost merilnih
relejev in zaščitne opreme (IEC 60255-26:2004)
Electrical relays - Part 26 : Electromagnetic compatibility requirements for
measuring relays and protection equipment (IEC 60255-26:2004)
ICS 29.120.70; 33.100.01 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60255-26
NORME EUROPÉENNE
EUROPÄISCHE NORM January 2005

ICS 29.120.70
English version
Electrical relays
Part 26 : Electromagnetic compatibility requirements
for measuring relays and protection equipment
(IEC 60255-26:2004)
Relais électriques Elektrische Relais
Partie 26: Exigences de compatibilité Teil 26: Anforderungen an die
électromagnétique pour les relais de elektromagnetische Verträglichkeit
mesure et dispositifs de protection für Messrelais und Schutzeinrichtungen
(CEI 60255-26:2004) (IEC 60255-26:2004)

This European Standard was approved by CENELEC on 2004-11-01. 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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, 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

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60255-26:2005 E
Foreword
The text of document 95/162/FDIS, future edition 1 of IEC 60255-26, 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 60255-26 on 2004-11-01.
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) 2005-08-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-11-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60255-26:2004 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 60255-26:2005
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1)
IEC 60255-11 – Electrical relays – –
Part 11: Interruptions to and alternating
component (ripple) in d.c. auxiliary
energizing quantity of measuring relays

1)
IEC 60255-22-1 – Part 22-1: Electrical disturbance tests for – –
measuring relays and protection
equipment - 1 MHz burst disturbance
tests
1) 2)
IEC 60255-22-2 – Part 22: Electrical disturbance tests for EN 60255-22-2 1996
measuring relays and protection
equipment - Section 2: Electrostatic
discharge tests
1) 2)
IEC 60255-22-3 – Part 22-3: Electrical disturbance tests for EN 60255-22-3 2000
measuring relays and protection
equipment - Radiated electromagnetic
field disturbance tests
1) 2)
IEC 60255-22-4 – Part 22-4: Electrical disturbance tests for EN 60255-22-4 2002
measuring relays and protection
equipment - Electrical fast transient/burst
immunity test
1) 2)
IEC 60255-22-5 – Part 22-5: Electrical disturbance tests for EN 60255-22-5 2002
measuring relays and protection
equipment - Surge immunity test

1) 2)
IEC 60255-22-6 – Part 22-6: Electrical disturbance tests for EN 60255-22-6 2001
measuring relays and protection
equipment - Immunity to conducted
disturbances induced by radio frequency
fields
1)
undated reference.
2)
valid edition at date of issue.

Publication Year Title EN/HD Year
1) 2)
IEC 60255-22-7 – Part 22-7: Electrical disturbance tests for EN 60255-22-7 2003
measuring relays and protection
equipment - Power frequency immunity
tests
1) 2)
IEC 60255-25 – Part 25: Electromagnetic emission tests EN 60255-25 2000
for measuring relays and protection
equipment
NORME CEI
INTERNATIONALE IEC
60255-26
INTERNATIONAL
Première édition
STANDARD
First edition
2004-08
Relais électriques –
Partie 26:
Exigences de compatibilité électromagnétique
pour les relais de mesure et dispositifs
de protection
Electrical relays –
Part 26:
Electromagnetic compatibility requirements
for measuring relays and protection equipment

© IEC 2004 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
Commission Electrotechnique Internationale PRICE CODE N
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60255-26 © IEC:2004 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9

1 Scope and object.11
1.1 Emission.11
1.2 Immunity.11
2 Normative references.13
3 Definitions.15
4 Test requirements and procedures.17
4.1 Emission tests.17
4.2 Immunity tests.17
5 Criteria for acceptance.17
5.1 Emission tests.17
5.2 Immunity tests.17
6 Test report.17

Figure 1 – Ports for measuring relays and protection equipment .15

Table 1 – Emission tests – Enclosure port .19
Table 2 – Emission tests – Auxiliary power supply port .19
Table 3 – Immunity tests – Enclosure port .19
Table 4 – Immunity tests – Auxiliary power supply port .21
Table 5 – Immunity tests – Communication port.23
Table 6 – Immunity tests – Input and output ports.25
Table 7 – Immunity tests – Functional earth port.27

60255-26 © IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL RELAYS –
Part 26: Electromagnetic compatibility requirements
for measuring relays and protection equipment

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of 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, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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. 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 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 IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60255-26 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
95/162/FDIS 95/164/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.

60255-26 © IEC:2004 – 7 –
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
The IEC 60255 series consists of the following parts, under the general title Electrical relays
Part 3: Single input energizing quantity measuring relays with dependent or independent
time
Part 5: Insulation coordination for measuring relays and protection equipment – Require-
ments and tests
Part 6: Measuring relays and protection equipment
Part 8: Thermal electrical relays
Part 11: Interruptions to and alternating component (ripple) in d.c. auxiliary energizing
quantity of measuring relays
Part 12: Directional relays and power relays with two input energizing quantities
Part 13: Biased (percentage) differential relays
Part
...