EN IEC 63522-7:2025

SLOVENSKI STANDARD
01-september-2025
Električni releji - Preskusi in meritve - 7 del: Funkcionalni preskusi
Electrical relays - Tests and Measurements - Part 7: Functional Tests
Elektrische Relais - Mess- und Prüfverfahren - Teil 7: Funktionelle Tests
Relais électriques - Essais et mesurages - Partie 7-7: Essais fonctionnels
Ta slovenski standard je istoveten z: EN IEC 63522-7:2025
ICS:
29.120.70 Releji Relays
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63522-7

NORME EUROPÉENNE
EUROPÄISCHE NORM June 2025
ICS 29.120.70
English Version
Electrical relays - Tests and measurements - Part 7: Functional
tests
(IEC 63522-7:2025)
Relais électriques - Essais et mesurages - Partie 7: Essais Elektrische Relais - Mess- und Prüfverfahren - Teil 7:
fonctionnels Funktionelle Tests
(IEC 63522-7:2025) (IEC 63522-7:2025)
This European Standard was approved by CENELEC on 2025-05-20. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63522-7:2025 E

European foreword
The text of document 94/1048/FDIS, future edition 1 of IEC 63522-7, prepared by TC 94 "Electrical
relays" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-06-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-06-30
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63522-7:2025 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 standard indicated:
IEC 61810-4:2020 NOTE Approved as EN IEC 61810-4:2020 (not modified)
IEC 61810-7:2006 NOTE Approved as EN 61810-7:2006 (not modified)
IEC 62314:2022 NOTE Approved as EN IEC 62314:2024 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60077-1 - Railway applications - Electric equipment for rolling EN 60077-1 -
stock - Part 1: General service conditions and
general rules
IEC 60571 2012 Railway applications - Electronic equipment used - -
on rolling stock
IEC 61373 2010 Railway applications - Rolling stock equipment - EN 61373 2010
Shock and vibration tests
IEC 61810-1 2015 Electromechanical elementary relays - Part 1: EN 61810-1 2015
General and safety requirements
+ A1 2019 + A1 2020
IEC 61810-2 2017 Electromechanical elementary relays - Part 2: EN 61810-2 2017
Reliability
IEC 61810-2- 2017 Electromechanical elementary relays - Part 2-1: EN 61810-2-1 2017
1 Reliability - Procedure for the verification of B10
values
IEC 61810-3 2015 Electromechanical elementary relays - Part 3: EN 61810-3 2015
Relays with forcibly guided (mechanically linked)
contacts
IEC 61812-1 2023 Time relays and coupling relays for industrial and EN IEC 61812-1 2024
residential use - Part 1: Requirements and tests
IEC 62246-1 2015 Reed switches - Part 1: Generic specification EN 62246-1 2015
IEC 62479 - Assessment of the compliance of low-power EN 62479 -
electronic and electrical equipment with the basic
restrictions related to human exposure to
electromagnetic fields (10 MHz to 300 GHz)
IEC 62497-1 2010 Railway applications - Insulation coordination - Part - -
1: Basic requirements - Clearances and creepage
distances for all electrical and electronic equipment
IEC 62498-1 - Railway applications - Environmental conditions for - -
equipment - Part 1: Equipment on board rolling
stock
Publication Year Title EN/HD Year
1 2
IEC 63522-0 — Electrical relays - Tests and Measurements - Part EN IEC 63522-0 —
0: General and Guidance
IEC 63522-25 2025 Electrical relays - Tests and measurements - Part EN IEC 63522-25 -
25: Magnetic interference
Under preparation. Stage at the time of publication: IEC CDV 63522-0:2024.
Under preparation. Stage at the time of publication: prEN IEC 63522-0:2024.
IEC 63522-7 ®
Edition 1.0 2025-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical relays – Tests and measurements –

Part 7: Functional tests
Relais électriques – Essais et mesurages –

Partie 7: Essais fonctionnels
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.70  ISBN 978-2-8327-0329-8

– 2 – IEC 63522-7:2025 © IEC 2025
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Test procedure . 7
4.1 Purpose . 7
4.2 Procedure . 7
4.3 Conditions . 13
5 Evaluation . 14
5.1 General . 14
5.2 Test report . 14
Annex A (normative) Test procedures for particular relay types . 15
A.1 Elementary relays with reed switches (reed contacts) . 15
A.1.1 General . 15
A.1.2 Procedure . 15
A.1.3 Requirements . 16
A.1.4 Information to be stated in the detail specification . 17
A.1.5 Influence of magnetic interferences . 17
A.1.6 Railway applications . 18
A.2 Time relays for industrial and residential use . 19
A.2.1 General . 19
A.2.2 Operate . 19
A.2.3 Release . 19
A.2.4 Time function . 20
A.3 Solid-state relays . 20
A.3.1 General . 20
A.3.2 OFF-state leakage current measurement . 21
A.3.3 ON-state voltage drop measurement . 21
A.4 Relays with forcibly guided (mechanically linked) contacts . 21
A.4.1 General . 21
A.4.2 Functional requirements . 21
A.4.3 Test procedure . 21
Annex B (normative) Standard test coils and test systems for reed switches . 23
B.1 Standard test coils for reed switches . 23
B.2 Ideal solenoid . 24
B.3 Test systems for reed switches . 25
B.3.1 Definition of test systems . 25
B.3.2 Test procedures and conditions of testing . 26
Bibliography . 27

Figure 1 – Monostable non-polarized DUT . 9
Figure 2 – Monostable DUT polarized by diode . 10
Figure 3 – Monostable polarized DUT with magnetic biasing . 11
Figure 4 – Bistable non-polarized DUT (not applicable to remanence DUTs) . 12
Figure 5 – Bistable polarized DUT (example) . 13

IEC 63522-7:2025 © IEC 2025 – 3 –
Figure A.1 – Example of test arrangement for multi-mounting . 18
Figure B.1 – Configuration of test coils . 23
Figure B.2 – Test system 1 . 25
Figure B.3 – Test system 2 . 25

Table 1 – Energization quantity values and corresponding functions . 8
Table A.1 – Special requirements for railway applications – Rolling stock . 19
Table A.2 – Changing of influencing quantities. 20
Table B.1 – List of standard test coils . 23

– 4 – IEC 63522-7:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL RELAYS – TESTS AND MEASUREMENTS –

Part 7: Functional 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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 63522-7 has been prepared by IEC technical committee 94: Electrical relays. It is an
International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
94/1048/FDIS 94/1083/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

IEC 63522-7:2025 © IEC 2025 – 5 –
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts of the IEC 63522 series, published under the general title Electrical relays –
Tests and measurements, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
– 6 – IEC 63522-7:2025 © IEC 2025
ELECTRICAL RELAYS – TESTS AND MEASUREMENTS –

Part 7: Functional tests
1 Scope
This document is used for testing electromechanical elementary relays (electromechanical
relays, reed relays, reed contacts, reed switches and technology combinations of these) and
evaluates their ability to perform under expected conditions of transportation, storage and all
aspects of operational use.
This document defines a standard test method to evaluate the switching function of the device
under test (DUT) at specified energization values throughout the defined temperature range.
This test method is part of the general DUT type test according to IEC 61810-1:2015, Table 3.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 60077-1, Railway applications – Electric equipment for rolling stock – Part 1: General
service conditions and general rules
IEC 60571:2012, Railway applications – Electronic equipment used on rolling stock
IEC 61373:2010, Railway applications – Rolling stock equipment – Shock and vibration tests
IEC 61810-1:2015, Electromechanical elementary relays – Part 1: General and safety
requirements
IEC 61810-1:2015/AMD1:2019
IEC 61810-2:2017, Electromechanical elementary relays – Part 2: Reliability
IEC 61810-2-1:2017, Electromechanical elementary relays – Part 2-1: Reliability – Procedure
for the verification of B10 values
IEC 61810-3:2015, Electromechanical elementary relays – Part 3: Relays with forcibly guided
(mechanically linked) contacts
IEC 61812-1:2023, Time relays and coupling relays for industrial and residential use – Part 1:
Requirements and tests
IEC 62246-1:2015, Reed switches – Part 1: Generic specification
IEC 62479, Assessment of the compliance of low-power electronic and electrical equipment
with the basic restrictions related to human exposure to electromagnetic fields (10 MHz to
300 GHz)
IEC 62497-1:2010, Railway applications – Insulation coordination – Part 1: Basic requirements
– Clearances and creepage distances for all electrical and electronic equipment

IEC 63522-7:2025 © IEC 2025 – 7 –
IEC 62498-1, Railway applications – Environmental conditions for equipment – Part 1:
Equipment on board rolling stock
IEC 63522-0:—, Electrical relays – Tests and measurements – Part 0: Testing – General and
guidance
IEC 63522-25:2025, Electrical relays – Tests and measurements – Part 25: Testing – Magnetic
interference
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 63522-0 apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
4 Test procedure
4.1 Purpose
The purpose of the test procedure is to ensure that the DUT performs satisfactorily at its
specified energization values throughout the defined temperature range.
4.2 Procedure
The tests stated in this document shall be carried out with appropriate test conditions and
severities, as well as suitable measurements conditions.
The basic operation functions for monostable and bistable relays are described in
IEC 61810-1:2015, Clause 9. The following functional tests cover a wider range and shall be
done in a sequence that covers all foreseeable DUT states and state changes. Table 1 sets out
the applicable values and the significance of the functional tests, referring to Figure 1 to
Figure 5, which give typical examples.
Additional and/or alternative functional test procedures for particular types of relays are
specified in Annex A:
• Elementary relays with reed switches (Clause A.1);
• Time relays for industrial and residential use (Clause A.2);
• Solid-state relays (Clause A.3);
• Relays with forcibly guided (mechanically linked) contacts (Clause A.4).
___________
First edition under preparation. Stage at the time of publication: IEC CDV 63522-0:2024.

– 8 – IEC 63522-7:2025 © IEC 2025
Table 1 – Energization quantity values and corresponding functions
Diagram code Applied energization The DUT shall: Applicable to:
(see Figure 1 quantity
to Figure 5)
a Non-operate voltage Not operate All types
b Operate voltage Operate All types
c Rated voltage Operate / remain operated All types
d Non-revert voltage Remain operated Polarized
e Non-release voltage Not release Monostable
f Release voltage Release Monostable
g Non-reset voltage Not reset Bistable
h Reset voltage Reset Bistable
i Revert reverse voltage Operate Bistable
j Reverse rated voltage Reset Bistable polarized
k Non-revert reverse voltage Remain non-operated / reset Bistable polarized
l Reverse polarity voltage Not operate Monostable polarized
x Preconditioning value Be preconditioned All if required
y Setting voltage Be set in required position All if required
z Reverse setting voltage Be set in required position All if required

Testing shall be carried out in the order given in Figure 1 to Figure 5, unless otherwise specified
by the manufacturer.
When required by the manufacturer or by the relay specification, the external magnetic
preconditioning shall be applied, respecting the correct orientation of the DUT with regard to
the applied external magnetic fields.
When proceeding from one step to the next, the characteristics of the coil voltage shall be as
specified by the manufacturer. The corresponding function of the DUT shall be checked by
electrically monitoring the contact state as defined in IEC 63522-0.
DUTs incorporating permanent magnets should be preconditioned with the rated voltage for a
full cycle to achieve consistent electrical measurements. In case of expected external influences
like shocks, which may change contact state without energization, the functional tests should
be executed with and without preconditioning to verify performance.
For statistical evaluation across a number of DUTs or several batches of DUTs, actual data for
the values given in Table 1 may be recorded instead of attributive testing.

IEC 63522-7:2025 © IEC 2025 – 9 –

Key
a non-operate voltage e non-release voltage (monostable DUTs)
b operate voltage f release voltage (monostable DUTs)
c rated voltage x preconditioning voltage
The upper traces each represent the energization values, the lower traces indicate the condition of the contact
(0 = release condition, 1 = operate condition).
The preconditioning pulses are examples only. Any other waveform direction, duration or amplitude may be used.
NOTE The drawings are not to scale.
Figure 1 – Monostable non-polarized DUT

– 10 – IEC 63522-7:2025 © IEC 2025

Key
a non-operate voltage e non-release voltage (monostable DUTs)
b operate voltage f release voltage (monostable DUTs)
c rated voltage k reverse polarity voltage
d non-revert voltage x preconditioning voltage
The upper traces each represent the energization values, the lower traces indicate the condition of the contact
(0 = release condition, 1 = operate condition).
The preconditioning pulses are examples only. Any other wav
...