Electrical relays - Tests and measurements - Part 4: Dielectric strength test

IEC 63522-4:2025 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 object of this test is to define a standard test method for the dielectric strength test.

Elektrische Relais - Mess- und Prüfverfahren - Teil 4: Prüfung der Durchschlagfestigkeit, Stoßspannungsprüfung

Relais électriques - Essais et mesurages - Partie 4: Essai de rigidité diélectrique

IEC 63522-4:2025 traite des essais ainsi que des sévérités et conditions appropriées pour les mesurages et essais destinés à évaluer l'aptitude de DUT à fonctionner dans des conditions prévues de transport, de stockage, et de tous les aspects d'utilisation opérationnelle. L'objet de cet essai est de définir une méthode d'essai normalisée pour l'essai de rigidité diélectrique.

Električni releji - Preskusi in meritve - 7-4. del: Preskus dielektrične trdnosti

General Information

Status
Not Published
Publication Date
12-Feb-2026
Drafting Committee
IEC/TC 94 - IEC_TC_94
Current Stage
6055 - Ratification Completed (DOR) - Publishing
Start Date
20-Jan-2026
Completion Date
20-Jan-2026

Relations

Effective Date
03-Feb-2026
Effective Date
03-Feb-2026
Effective Date
03-Feb-2026
Effective Date
03-Feb-2026
Effective Date
03-Feb-2026
Effective Date
03-Feb-2026
Effective Date
03-Feb-2026
Effective Date
03-Feb-2026
Effective Date
03-Feb-2026
Effective Date
03-Feb-2026
Effective Date
03-Feb-2026
Effective Date
03-Feb-2026
Effective Date
03-Feb-2026

Overview

FprEN IEC 63522-4:2024 (Dielectric strength test) defines a standard method to verify the dielectric withstand capability of electrical relays. The standard is intended to assess insulation integrity between circuits, across open contacts and between windings under conditions representative of transportation, storage and operational use. The objective is a repeatable, internationally aligned test procedure to detect flashover, breakdown and insufficient insulation performance.

Key topics and requirements

  • Scope and purpose: Establishes a standardized dielectric strength (withstand) test for relays to confirm insulation sufficiency.
  • Pre‑conditioning: Where required, specimens are preconditioned by
    • Dry heat: 55 °C ±2 K for 48 h (IEC 60068-2-2)
    • Damp heat: 25 °C ±5 K, RH 91–95 % for 48 h with no condensation (IEC 60068-2-67)
  • Test voltage and duration
    • AC sinusoidal at power frequency (45–65 Hz; typically 50 Hz or 60 Hz); DC may be used equal to the AC peak value.
    • Nominal durations: 1 min (standard) or 1 s (permissible if voltage increased to 110 %).
    • No flashover or breakdown allowed; leakage current limited (permitted current ≤ 3 mA in normal tests).
  • Test setup and terminals
    • Specifies which terminals to stress (contact circuits, coil-to-contact, separate windings, exposed conductive parts simulated by foil, etc.).
    • Special components (LEDs, varistors, free‑wheeling diodes) may be disconnected, bridged or removed to make the test practical.
  • Voltage quality and equipment
    • Voltage waveform: substantially sinusoidal with THD < 5 %; peak/rms ratio √2 ±3 %.
    • Tolerance ±3 % on measured test voltage.
    • Test equipment in line with IEC 61180 and IEC 60060-1; generator current and drop performance defined (see Annex A, Table A.1).
  • Evaluation and reporting
    • Test report must record specimen description, test voltage, duration, and-if breakdown occurs-breakdown voltage and breakdown time, plus any observations (Annex T).

Applications and users

  • Relay manufacturers validating product insulation and design compliance.
  • Test laboratories performing dielectric withstand, type or routine testing.
  • OEMs and system integrators specifying relay acceptance criteria for safety-critical equipment.
  • Certification bodies and compliance engineers assessing conformity to IEC standards and environmental robustness.

Related standards

  • IEC 61810‑1 and IEC 61810‑7‑0 (general relay requirements and test guidance)
  • IEC 60060‑1, IEC 61180 (high‑voltage test techniques and equipment)
  • IEC 60068 series (environmental preconditioning)

Keywords: dielectric strength test, electrical relays, relay testing, dielectric withstand, IEC standard, high-voltage test, relay insulation testing, preconditioning, test report.

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Frequently Asked Questions

EN IEC 63522-4:2026 is a draft published by CLC. Its full title is "Electrical relays - Tests and measurements - Part 4: Dielectric strength test". This standard covers: IEC 63522-4:2025 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 object of this test is to define a standard test method for the dielectric strength test.

IEC 63522-4:2025 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 object of this test is to define a standard test method for the dielectric strength test.

EN IEC 63522-4:2026 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.

EN IEC 63522-4:2026 has the following relationships with other standards: It is inter standard links to EN 60068-2-67:1996, EN 61180:2016, EN IEC 60068-2-2:2025, prEN IEC 63522-0:2025, EN IEC 63522-44:2025, EN IEC 63522-25:2025, EN IEC 63522-49:2025, EN IEC 63522-35:2025, EN IEC 63522-24:2025, EN IEC 63522-11:2025, EN IEC 63522-40:2025, EN IEC 63522-54:2025, EN IEC 63522-22:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN IEC 63522-4:2026 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
oSIST prEN IEC 61810-7-4:2023
01-september-2023
Električni releji - Preskusi in meritve - 7-4. del: Preskus dielektrične trdnosti
Electrical relays - Tests and Measurements - Part 7-4: Dielectric strength test
Ta slovenski standard je istoveten z: prEN IEC 61810-7-4:2023
ICS:
29.120.70 Releji Relays
oSIST prEN IEC 61810-7-4:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 61810-7-4:2023
oSIST prEN IEC 61810-7-4:2023
94/879/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61810-7-4 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-07-07 2023-09-29
SUPERSEDES DOCUMENTS:
94/838/CD, 94/866/CC
IEC TC 94 : ELECTRICAL RELAYS
SECRETARIAT: SECRETARY:
Austria Mr Bernhard Spalt
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

TC 121,SC 121A
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Electrical relays - Tests and Measurements Part 7-4: Dielectric strength test

PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

oSIST prEN IEC 61810-7-4:2023
– 2 – IEC CDV 61810-7-4:2023 © IEC 2023
1 CONTENTS
2 FOREWORD . 3
3 1 Scope . 5
4 2 Normative references . 5
5 3 Terms and definitions . 5
6 4 Test procedures . 7
7 5 Evaluation . 8
8 Annex T (normative) Test report . Error! Bookmark not defined.
9 Bibliography . 12
11 Table 1 – Dielectric strength – AC. Error! Bookmark not defined.
12 Table 2 – Dielectric strength – DC . Error! Bookmark not defined.
oSIST prEN IEC 61810-7-4:2023
IEC CDV 61810-7-4:2023 © IEC 2023 – 3 –
15 INTERNATIONAL ELECTROTECHNICAL COMMISSION
16 ____________
18 Electrical Relays –
19 Tests and measurements
21 Part 7-4: Dielectric strength test
23 FOREWORD
24 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization
25 comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to p
26 2) romote international co-operation on all questions concerning standardization in the electrical and electronic
27 fields. To this end and in addition to other activities, IEC publishes International Standards, Technical
28 Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred
29 to as "IEC Publication(s)"). Their preparation is entrusted to technical committees; any IEC National
30 Committee interested in the subject dealt with may participate in this preparatory work. International,
31 governmental and non-governmental organizations liaising with the IEC also participate in this preparation.
32 IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with
33 conditions determined by agreement between the two organizations.
34 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
35 consensus of opinion on the relevant subjects since each technical committee has representation from all
36 interested IEC National Committees.
37 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
38 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
39 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
40 misinterpretation by any end user.
41 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
42 transparently to the maximum extent possible in their national and regional publications. Any divergence between
43 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
44 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
45 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
46 services carried out by independent certification bodies.
47 6) All users should ensure that they have the latest edition of this publication.
48 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
49 members of its technical committees and IEC National Committees for any personal injury, property damage or
50 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
51 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
52 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
53 indispensable for the correct application of this publication.
54 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
55 rights. IEC shall not be held responsible for identifying any or all such patent rights.
56 The International Standards of the IEC 61810 have been prepared by IEC technical committee
57 94: All-or-nothing electrical relays.
58 The text of this International Standard is based on the following documents:
CD CC
94/838/CD 94/866/CC
60 Full information on the voting for the approval of this International Standard can be found in the
61 report on voting indicated in the above table.
62 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
63 A list of all parts of IEC 61810 series, published under the general title Electromechanical
64 elementary relays, can be found on the IEC website.

oSIST prEN IEC 61810-7-4:2023
– 4 – IEC CDV 61810-7-4:2023 © IEC 2023
65 This International Standard is to be used in conjunction with IEC 61810-1:2015.
66 The committee has decided that the contents of this document will remain unchanged until the
67 stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
68 the specific document. At this date, the document will be
69 • reconfirmed,
70 • withdrawn,
71 • replaced by a revised edition, or
72 • amended.
oSIST prEN IEC 61810-7-4:2023
IEC CDV 61810-7-4:2023 © IEC 2023 – 5 –
75 Electrical Relays –
76 Tests and measurements
78 Part 7-4: Dielectric strength test
82 1 Scope
83 This part of IEC 61810-7 is used for testing along with the appropriate severities and conditions
84 for measurements and tests designed to assess the ability of specimens to perform under
85 expected conditions of transportation, storage and all aspects of operational use.
86 The object of this test is to define a
...

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