SIST EN IEC 63522-46:2026
(Main)Electrical relays - Tests and measurements - Part 46: Impulse voltage test
General Information
- Abstract
This part of IEC 63522 is used for testing along with the appropriate severities and conditions for measurements and tests designed to assess the ability of DUTs to perform under expected conditions of transportation, storage and all aspects of operational use.
This document defines a standard test method for impulse voltage test.
- Status
- Published
- Public Enquiry End Date
- 30-Jul-2025
- Publication Date
- 13-Sep-2026
- Technical Committee
- ISS EIT.ERE - All-or-nothing electrical relays
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 02-Sep-2026
- Due Date
- 07-Nov-2026
- Completion Date
- 14-Sep-2026
Overview
SIST EN IEC 63522-46:2026 sets out the standardized requirements for conducting impulse voltage tests on electrical relays. This international standard, developed by the Slovenian Institute for Standardization (SIST) and aligned with IEC guidelines, defines procedures to assess the insulation’s ability to withstand specified transient overvoltages. Impulse voltage testing is a critical part of relay quality assurance, verifying that relays can safely operate under conditions simulating overvoltage events that may occur during transportation, storage, or normal operation.
Key Topics
- Impulse Voltage Test Method: Specifies a standardized approach to apply a defined impulse voltage waveform to relay insulation, mimicking transient electrical stresses.
- Preconditioning: Details if and when relays require preconditioning before the test, referencing related product standards.
- Test Conditions: Covers test setup, including ambient conditions, number and polarity of impulses, waveform parameters (such as 1.2/50 μs), and required output impedance for the impulse generator.
- Test Points: Identifies terminal combinations on relays where the impulse voltage is applied, ensuring thorough testing of all relevant insulation paths.
- Evaluation Criteria: Outlines acceptable performance, focusing on the absence of breakdowns or flashovers and compliance with leakage current limits.
- Test Reporting: Recommends comprehensive recording of test conditions, device identification, pulse characteristics, and outcomes to enable reproducibility and traceability.
Applications
- Relay Manufacturers: Enables consistent and objective quality verification during development, production, and batch testing. Ensures delivered relays meet global performance and safety norms regarding insulation.
- Testing Laboratories: Provides detailed procedures and reporting requirements for accredited third-party type or routine testing of relays, supporting compliance documentation.
- System Integrators & End-Users: Assures purchased relays are validated against standardized transient overvoltage resilience, supporting system reliability across energy, automation, transportation, and process control sectors.
- Standards & Regulatory Bodies: Serves as a reference for specifying testing methods in procurement, conformity assessment, and certification, fostering international harmonization of relay safety requirements.
Related Standards
SIST EN IEC 63522-46:2026 should be used in conjunction with other applicable relay and insulation coordination standards, including:
- IEC 60664-1: Insulation coordination for equipment within low-voltage supply systems
- IEC 61180: High-voltage test techniques for low-voltage equipment
- IEC 63522-0: General terms and definitions for relay tests and measurements
- IEC 63522-4: Dielectric strength test for electrical relays
- IEC 63522-7: Functional tests for electrical relays
- IEC 63522-42 (under development): EMC (electromagnetic compatibility) related surge immunity
- IEC 60060-1: General requirements for high-voltage test techniques
Practical Value
Adopting SIST EN IEC 63522-46:2026 in relay testing programs improves confidence in relay performance under stressful electrical events. It strengthens reliability by ensuring insulation is robust against impulse voltages and supports market access by aligning with internationally recognized testing standards for electrical relays. Clear, standardized reporting further enhances traceability and aids troubleshooting should product non-conformities arise.
Keywords: Electrical relays, impulse voltage test, relay insulation, IEC standards, SIST, relay testing, overvoltage, transient test, insulation coordination, quality assurance, international standard.
Relations
- Effective Date
- 07-Jul-2026
- Effective Date
- 07-Jul-2026
- Effective Date
- 07-Jul-2026
- Effective Date
- 07-Jul-2026
- Refers
SIST EN IEC 61810-7:2025 - Electrical relays - Tests and Measurements - Part 7: Functional Tests - Effective Date
- 07-Jul-2026
- Effective Date
- 07-Jul-2026
Get Certified
Connect with accredited certification bodies for this standard
Intertek Testing Services NA Inc.
Intertek certification services in North America.
UL Solutions
Global safety science company with testing, inspection and certification.
ANCE
Mexican certification and testing association.
Sponsored listings
Frequently Asked Questions
SIST EN IEC 63522-46:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Electrical relays - Tests and measurements - Part 46: Impulse voltage test". This standard covers: This part of IEC 63522 is used for testing along with the appropriate severities and conditions for measurements and tests designed to assess the ability of DUTs to perform under expected conditions of transportation, storage and all aspects of operational use. This document defines a standard test method for impulse voltage test.
This part of IEC 63522 is used for testing along with the appropriate severities and conditions for measurements and tests designed to assess the ability of DUTs to perform under expected conditions of transportation, storage and all aspects of operational use. This document defines a standard test method for impulse voltage test.
SIST EN IEC 63522-46:2026 is classified under the following ICS (International Classification for Standards) categories: 29.120.70 - Relays. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN IEC 63522-46:2026 has the following relationships with other standards: It is inter standard links to SIST EN IEC 63522-4:2026, SIST EN IEC 60664-1:2020, SIST EN 61180:2017, kSIST FprEN IEC 63522-0:2026, SIST EN IEC 61810-7:2025, SIST EN IEC 60664-1:2020/A1:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN IEC 63522-46:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2026
Električni releji - Preskusi in meritve - 46. del: Preskus z udarno napetostjo
Electrical relays - Tests and measurements - Part 46: Impulse voltage test
Elektrische Relais - Mess- und Prüfverfahren - Teil 46: Überspannungsfestigkeitstest
Relais électriques - Essais et mesurage - Partie 46: Essai de tension de choc
Ta slovenski standard je istoveten z: EN IEC 63522-46:2026
ICS:
29.120.70 Releji Relays
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 63522-46
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2026
ICS 29.120.70
English Version
Electrical relays - Tests and measurements - Part 46: Impulse
voltage test
(IEC 63522-46:2026)
Relais électriques - Essais et mesurage - Partie 46: Essai Elektrische Relais - Mess- und Prüfverfahren - Teil 46:
de tension de choc Überspannungsfestigkeitstest
(IEC 63522-46:2026) (IEC 63522-46:2026)
This European Standard was approved by CENELEC on 2026-07-14. 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
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63522-46:2026 E
European foreword
The text of document 94/1198/FDIS, future edition 1 of IEC 63522-46, 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) 2027-08-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-08-31
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.
This document is read in conjunction with EN IEC 63522-0:– .
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 63522-46:2026 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 60060-1:2025 NOTE Approved as EN IEC 60060-1:2025 (not modified)
IEC 61810-1 NOTE Approved as EN 61810-1
IEC 61810-10:2019 NOTE Approved as EN IEC 61810-10:2019 (not modified)
IEC 62246-1:2015 NOTE Approved as EN 62246-1:2015 (not modified)
IEC 62246-1-1:2018 NOTE Approved as EN IEC 62246-1-1:2018 (not modified)
Under preparation. Stage at the time of publication: prEN IEC 63522-0:2025.
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 60664-1 2020 Insulation coordination for equipment EN IEC 60664-1 2020
within low-voltage supply systems - Part 1:
Principles, requirements and tests
+ AMD1 2025 + A1 2025
IEC 61180 2016 High-voltage test techniques for low- EN 61180 2016
voltage equipment - Definitions, test and
procedure requirements, test equipment
IEC 63522-0 - Electrical relays - Tests and Measurements - -
- Part 0: General and Guidance
IEC 63522-4 - Electrical relays - Tests and measurements EN IEC 63522-4 -
- Part 4: Dielectric strength test
IEC 63522-7 - Electrical relays - Tests and measurements EN IEC 63522-7 -
- Part 7: Functional tests
IEC 63522-46 ®
Edition 1.0 2026-06
INTERNATIONAL
STANDARD
Electrical relays - Tests and measurements -
Part 46: Impulse voltage test
ICS 29.120.70 ISBN 978-2-8327-1259-7
IEC 63522-46:2026-06(en)
IEC 63522-46:2026 © IEC 2026
CONTENTS
FOREWORD . 2
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Test procedure . 4
4.1 Purpose . 4
4.2 Procedure . 4
4.2.1 Preconditioning . 4
4.2.2 Test . 5
4.3 Conditions to be specified . 5
5 Evaluation . 5
5.1 General . 5
5.1.1 No breakdown . 5
5.1.2 Final checking . 6
5.2 Test report . 6
Annex A (informative) Example of test circuit for impulse voltage test . 7
Bibliography . 9
Figure A.1 – Simplified circuit diagram of the combination wave generator . 7
Figure A.2 – Full impulse voltage time parameters . 8
Table A.1 – Example of test points . 7
IEC 63522-46:2026 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Electrical relays - Tests and measurements -
Part 46: Impulse voltage test
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
transp
...