SIST EN IEC 63522-3:2026

Electrical relays - Tests and measurements - Part 3: Relay coil properties

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.
The objective of this test is to ensure that the properties of the relay coil(s) are within the specified limits.

Elektrische Relais – Mess- und Prüfverfahren – Teil 3: Eigenschaften von Relaisspulen

Relais électriques - Essais et mesurages - Partie 3: Caractéristiques de la bobine du relais

IEC 63522-3:2026 traite des essais ainsi que des sévérités et conditions appropriées pour les mesurages et essais destinés à évaluer l'aptitude des dispositifs en essai (DUT) à fonctionner dans les conditions prévues de transport, de stockage et dans tous les aspects de leur utilisation opérationnelle.
L'objet de cet essai est de s'assurer que les caractéristiques de la ou des bobines des relais se situent dans les limites spécifiées

Električni releji - Preskusi in meritve - 3. del: Lastnosti tuljave releja

Ta del IEC 63522 se uporablja za testiranje skupaj z ustreznimi stopnjami resnosti in pogoji za meritve in teste, zasnovane za oceno sposobnosti DUT-ov (naprav za preizkušanje) za delovanje v pričakovanih pogojih prevoza, skladiščenja in vseh vidikov operativne uporabe.
Cilj tega testa je zagotoviti, da so lastnosti relejne tuljave (tuljav) znotraj določenih mej.

General Information

• Status: Published
• Public Enquiry End Date: 17-Apr-2025
• Publication Date: 19-May-2026
• ICS: 29.120.70 - Relays
• Technical Committee: ISS EIT.ERE - All-or-nothing electrical relays
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 12-May-2026
• Due Date: 17-Jul-2026
• Completion Date: 20-May-2026
• Ref Project: EN IEC 63522-3:2026 - Electrical relays - Tests and measurements - Part 3: Relay coil properties

Relations

• Refers: oSIST prEN IEC 63522-0:2025 - Electrical relays - Tests and Measurements - Part 0: General and Guidance
• Effective Date: 31-Mar-2026
• Refers: SIST EN IEC 63522-2:2025 - Electrical relays - Tests and Measurements - Part 2: Mechanical tests and weighing
• Effective Date: 31-Mar-2026
• Referred By: SIST EN IEC 63522-30:2025 - Electrical relays - Tests and Measurements - Part -30: Contact sticking (delayed release)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 63522-15:2025 - Electrical relays - Tests and Measurements - Part 7-15: Robustness of Terminals
• Effective Date: 03-Feb-2026

Overview

kSIST FprEN IEC 63522-3:2026 - "Electrical relays - Tests and measurements - Part 3: Relay coil properties" - published by CLC, provides standardized procedures for the testing and measurement of relay coil properties. This standard applies essential test methods and measurement conditions to ensure electromechanical relay coils meet quality and application requirements under typical operating, storage, and transportation environments.

The document establishes a uniform approach for assessing the reliability and performance of relay coils, focusing on parameters such as resistance, impedance, inductance, power consumption, and back electromotive force (Back-EMF). These standardized tests are integral for compliance, product development, procurement, and quality control tasks in the electrical and electronics industry.

Keywords: relay coil properties, electrical relays, coil resistance, coil impedance, coil inductance, relay power consumption, back-EMF, IEC 63522-3, relay testing, relay measurement

Key Topics

• Scope and Purpose

  • Defines standardized test methods for measuring crucial properties of relay coils in various environments.
  • Ensures components meet specified operational, transportation, and storage conditions.

• Coil Resistance

  • Detailed procedures for accurate resistance measurement, including four-wire techniques.
  • Importance of test parameters such as temperature, error tolerances, and influence of built-in suppression circuits.

• Coil Impedance and Inductance

  • Test methods to determine coil impedance using direct current (DC) and alternating current (AC).
  • Stepwise procedures for measuring inductance with the relay armature in open and closed positions.
  • Considerations for different test frequencies, voltage ratings, and measurement instrumentation.

• Coil Power Consumption

  • Methods for evaluating power usage in both DC and AC relays.
  • Calculation and measurement techniques to ensure accurate assessments in specified conditions.

• Coil Transient Suppression (Back-EMF)

  • Procedures to verify that induced transient voltages are within permitted limits.
  • Guidance on test circuit setup and use of oscilloscopes for observing voltage traces.

• Test Reporting

  • Requirements for comprehensive documentation of test conditions, methods, equipment, and results.

Applications

kSIST FprEN IEC 63522-3:2026 is critical for a wide range of electrical and electronic industry stakeholders:

• Manufacturers:

  • Ensures relay products meet international quality and safety requirements before market release.
  • Facilitates design validation and production consistency.

• Testing Laboratories:

  • Provides detailed procedures for conducting and reporting on relay coil property tests.
  • Supports third-party conformity assessment and certification services.

• Procurement and Quality Assurance Teams:

  • Defines measurable parameters for supplier qualification and incoming inspection.
  • Supports technical procurement specifying relay coil electrical characteristics.

• R&D and Design Engineers:

  • Guides in selecting appropriate relay types for application-specific requirements.
  • Assists in evaluating design modifications for compliance with performance standards.

• End Users and System Integrators:

  • Enables the selection of reliable relay components for use in control systems, automation, transportation, and energy infrastructure.

Related Standards

• IEC 63522-0: Electrical relays – Tests and measurements – Part 0: General and guidance

  • Provides definitions, general requirements, and foundational principles to which Part 3 refers.

• IEC 61810-7:2006: Electromechanical elementary relays – Test and measurement procedures

  • Describes general conditions and procedures applicable to electromechanical relay testing.

• IEC 60617: Graphical symbols for diagrams

  • Provides essential symbols used in documenting test circuits and procedures.

kSIST FprEN IEC 63522-3:2026 integrates seamlessly with other parts of IEC 63522 and broader relay standards, ensuring comprehensive and internationally harmonized approaches in relay testing and specification.

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By adhering to kSIST FprEN IEC 63522-3:2026, organizations enhance relay reliability, ensure compliance with international best practices, and support safe and consistent performance across diverse application environments.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2026
Električni releji - Preskusi in meritve - 3. del: Lastnosti tuljave releja
Electrical relays - Tests and measurements - Part 3: Relay coil properties
Elektrische Relais – Mess- und Prüfverfahren – Teil 3: Eigenschaften von Relaisspulen
Relais électriques - Essais et mesurages - Partie 3: Caractéristiques de la bobine du
relais
Ta slovenski standard je istoveten z: EN IEC 63522-3:2026
ICS:
29.120.70 Releji Relays
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63522-3

NORME EUROPÉENNE
EUROPÄISCHE NORM April 2026
ICS 29.120.70
English Version
Electrical relays - Tests and measurements - Part 3: Relay coil
properties
(IEC 63522-3:2026)
Relais électriques - Essais et mesurages - Partie 3: Elektrische Relais - Mess- und Prüfverfahren - Teil 3:
Caractéristiques de la bobine du relais Eigenschaften von Relaisspulen
(IEC 63522-3:2026) (IEC 63522-3:2026)
This European Standard was approved by CENELEC on 2026-04-08. 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 63522-3:2026 E

European foreword
The text of document 94/1178/FDIS, future edition 1 of IEC 63522-3, 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) 2027-04-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-04-30
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 63522-3:2026 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61810-7:2006 NOTE Approved as EN 61810-7:2006 (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
1 2
IEC 63522-0 – Electrical relays - Tests and Measurements EN IEC 63522-0 –
- Part 0: General and Guidance
IEC 63522-2 2025 Electrical relays - Tests and measurements EN IEC 63522-2 2025
- Part 2: Mechanical tests and weighing

Under preparation. Stage at the time of publication: IEC CDV 63522-0:2025.
Under preparation. Stage at the time of publication: prEN IEC 63522-0:2025.
IEC 63522-3 ®
Edition 1.0 2026-03
INTERNATIONAL
STANDARD
Electrical relays - Tests and measurements -
Part 3: Relay coil properties
ICS 29.120.70  ISBN 978-2-8327-1096-8

IEC 63522-3:2026-03(en)
IEC 63522-3:2026 © IEC 2026
CONTENTS
FOREWORD . 2
1 Scope . 4
2 Normative references . 4
3 Terms, definitions and abbreviated terms . 4
3.1 Terms and definitions. 4
3.2 Abbreviated terms . 4
4 Test procedure . 4
4.1 General . 4
4.2 Coil resistance . 5
4.2.1 Purpose . 5
4.2.2 Procedure . 5
4.2.3 Conditions to be specified . 6
4.3 Coil impedance . 6
4.3.1 Purpose . 6
4.3.2 Procedure . 6
4.3.3 Conditions to be specified . 7
4.4 Coil inductance . 7
4.4.1 Purpose . 7
4.4.2 Procedure . 7
4.4.3 Conditions to be specified . 8
4.5 Coil power consumption . 8
4.5.1 Purpose . 8
4.5.2 Procedure . 8
4.5.3 Conditions to be specified . 8
4.6 Coil transient suppression test . 9
4.6.1 Purpose . 9
4.6.2 Procedure . 9
4.6.3 Conditions to be specified . 10
5 Evaluation . 11
5.1 General . 11
5.2 Test report . 11
Bibliography . 12

Figure 1 – Example of four-wire resistance measurement . 5
Figure 2 – Example presence of diodes in the coil circuit . 6
Figure 3 – Example circuit for the measurement of coil transient suppression . 9
Figure 4 – Example traces on an oscilloscope screen during transient voltage
measurement . 10

IEC 63522-3:2026 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Electrical relays - Tests and measurements -
Part 3: Relay coil properties
FOREWORD
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IEC 63522-3 has been prepared by IEC technical committee 94: Electrical relays. It is an
International Standard.
The text of this International Standard is based on
...