EN 60255-22-2:2008

SLOVENSKI STANDARD
01-september-2008
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Electrical relays and protection equipment - Part 22-2: Electrical disturbance tests -
Electrostatic discharge tests
Messrelais und Schutzeinrichtungen - Teil 22-2: Prüfungen der elektrischen Störfestigkeit
- Prüfungen mit elektrostatischer Entladung
Relais de mesure et dispositifs de protection - Partie 22-2: Essais d'influence électrique -
Essais de décharge électrostatique
Ta slovenski standard je istoveten z: EN 60255-22-2:2008
ICS:
29.120.70 Releji Relays
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60255-22-2
NORME EUROPÉENNE
June 2008
EUROPÄISCHE NORM
ICS 29.120.70 Supersedes EN 60255-22-2:1996

English version
Measuring relays and protection equipment -
Part 22-2: Electrical disturbance tests -
Electrostatic discharge tests
(IEC 60255-22-2:2008)
Relais de mesure  Messrelais und Schutzeinrichtungen -
et dispositifs de protection - Teil 22-2: Prüfungen
Partie 22-2: Essais d'influence électrique - der elektrischen Störfestigkeit -
Essais de décharge électrostatique Prüfungen mit elektrostatischer Entladung
(CEI 60255-22-2:2008) (IEC 60255-22-2:2008)

This European Standard was approved by CENELEC on 2008-05-01. 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the 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

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60255-22-2:2008 E
Foreword
The text of document 95/227/FDIS, future edition 3 of IEC 60255-22-2, 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 60255-22-2 on 2008-05-01.
This European Standard supersedes EN 60255-22-2:1996.
The main changes with respect to EN 60255-22-2:1996 are listed below:
– the improvement of the scope and object;
– the improvement of the test severity level, test set-up and test report.
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) 2009-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-05-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60255-22-2:2008 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 60255-22-2:2008
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  When 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 60050-161 - International Electrotechnical Vocabulary - -
(IEV) -
Chapter 161: Electromagnetic compatibility

1)
IEC 60050-446 - International Electrotechnical Vocabulary - -
(IEV) -
Chapter 446: Electrical relays

1)
IEC 60050-448 - International Electrotechnical Vocabulary - -
(IEV) -
Chapter 448: Power system protection

IEC 60255-6 1988 Electrical relays - EN 60255-6 1994
Part 6: Measuring relays and protection + corr. February 1995
equipment
IEC 61000-4-2 1995 Electromagnetic compatibility (EMC) - EN 61000-4-2 1995
A1 1998 Part 4-2: Testing and measurement A1 1998
A2 2000 techniques - Electrostatic discharge A2 2001
immunity test
1)
Undated reference.
IEC 60255-22-2
Edition 3.0 2008-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Measuring relays and protection equipment –
Part 22-2: Electrical disturbance tests – Electrostatic discharge tests

Relais de mesure et dispositifs de protection –
Partie 22-2: Essais d’influence électrique – Essais de décharge électrostatique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
M
CODE PRIX
ICS 29.120.70 ISBN 2-8318-9709-2

– 2 – 60255-22-2 © IEC:2008
CONTENTS
FOREWORD.3
1 Scope and object.5
2 Normative references .5
3 Terms and definitions.6
4 Test severity level .6
5 Test equipment.7
6 Test set-up .7
7 Test procedures .9
8 Criteria for acceptance .11
9 Test report.11
Annex A (informative) .12

Figure 1 – Example of test set-up with EUT .9

Table 1 – Test severity classes.7
Table 2 – Criteria for acceptance .11

60255-22-2 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
MEASURING RELAYS AND PROTECTION EQUIPMENT –

Part 22-2: Electrical disturbance tests –
Electrostatic discharge tests
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 60255-22-2 has been prepared by IEC technical committee 95:
Measuring relays and protection equipment.
This third edition cancels and replaces the second edition published in 1996. It constitutes a
technical revision.
The main changes with respect to the previous edition are listed below:
• the improvement of the scope and object,
• the improvement of the test severity level, test set-up and test report.

– 4 – 60255-22-2 © IEC:2008
The text of this part is based on the following documents:
FDIS Report on voting
95/227/FDIS 95/232/RVD
Full information on the voting for the approval of this standard can be found in the voting on
report indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 60255 series, published under the general title Measuring relays and
protection equipment, can be found on the IEC website.
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.
60255-22-2 © IEC:2008 – 5 –
MEASURING RELAYS AND PROTECTION EQUIPMENT –

Part 22-2: Electrical disturbance tests –
Electrostatic discharge tests
1 Scope and object
This part of IEC 60255-22 is based on IEC 61000-4-2, referring to that publication where
applicable, and specifies the general requirements for electrostatic discharge tests for
measuring relays and protection equipment for power system protection, including the control,
monitoring and process interface equipment used with those systems.
The object of the tests is to confirm that the equipment being tested will not maloperate when
energized and subjected to an electrostatic discharge.
The requirements are applicable only to relays and protection equipment in new condition,
and all tests specified are type tests only.
The object of this standard is to state:
• definitions of terms used;
• test severity level;
• test equipment;
• test set-up;
• test procedures;
• criteria for acceptance;
• test report requirements.
2 Normative references
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.
IEC 60050-161, International Electrotechnical Vocabulary – Chapter 161: Electromagnetic
compatibility
IEC 60050-446, International Electrotechnical Vocabulary – Chapter 446: Electrical relays
IEC 60050-448, International Electrotechnical Vocabulary – Chapter 448: Power system
protection
IEC 60255-6:1988, Electrical relays – Part 6: Measuring relays and protection equipment
IEC 61000-4-2:1995, Electromagnetic compatibility (EMC) – Part
...