SIST EN IEC 61810-32:2025

Electrical relays - Tests and Measurements - Part -32: Acoustic Noise

IEC 63522-32:2025 This document is used for testing under 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 to investigate the effect of acoustic noise in conjunction with the operating, releasing and cycling noise of a relay and the immunity of a relay to acoustic noise.

Elektromechanische Elementarrelais – Prüfungen und Messungen – Teil -32: Störgeräusche

Relais électriques - Essais et mesurages - Partie 32: Bruit acoustique

IEC 63522-32:2025 Le présent document traite des essais de tous les types de relais électriques et elle évalue leur aptitude à fonctionner dans les conditions prévues de transport, de stockage et dans tous les aspects de leur utilisation opérationnelle. Le présent document définit une méthode d'essai normalisée pour étudier l'effet du bruit acoustique conjointement avec le bruit dû au fonctionnement, au relâchement et aux cycles d'un relais, et de l'immunité d'un relais au bruit acoustique.

Električni releji - Preskusi in meritve -32. del: Akustični šum

Ta del standarda IEC 63522 se uporablja za preskušanje vseh vrst električnih relejev in vrednotenje njihove zmožnosti delovanja v pričakovanih pogojih med transportom in skladiščenjem ter v vseh vidikih operativne uporabe.
OPOMBA: Primeri električnih relejev za potrebe tega dokumenta vključujejo elektromehanske releje, releje reed, kontakte reed, stikala reed, polprevodniške releje, časovne releje in njihove tehnološke kombinacije.
Ta dokument določa standardno preskusno metodo za ugotavljanje učinka akustičnega šuma v povezavi z obratovalnim, sprožilnim in cikličnim šumom releja ter odpornostjo releja na akustični šum.

General Information

• Status: Published
• Public Enquiry End Date: 30-Dec-2023
• Publication Date: 18-Jun-2025
• ICS: 17.140.01 - Acoustic measurements and noise abatement in general
• 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: 11-Jun-2025
• Due Date: 16-Aug-2025
• Completion Date: 19-Jun-2025
• Ref Project: EN IEC 63522-32:2025 - Electrical relays - Tests and measurements - Part 32: Acoustic noise

Overview

EN IEC 63522-32:2025 (IEC 63522-32:2025) specifies standardized test methods for assessing acoustic noise related to electrical relays. The standard covers both noise emission (the sound produced by relays during operate, release and cycling) and noise immunity (the relay’s ability to function when exposed to external acoustic disturbances). It applies to all types of relays (electromechanical, reed, reed contacts/switches, solid‑state, time relays and combinations) and is intended for use during design verification, type testing and production evaluation.

Key topics and technical requirements

• Test types
  • Noise emission: measure operating, releasing and cycling noise while the device under test (DUT) is energized, de‑energized and cycled.
  • Noise immunity: expose DUT to high acoustic levels and verify functional performance.
• Measurement instrumentation
  • Use a Class 2 sound level meter meeting IEC 61672‑1.
  • Frequency weighting: A weighting per IEC 61672‑1.
• Test setup
  • DUT placed on a soft plate (e.g., sponge or polyethylene foam, 50–55 Shore).
  • Microphone distances: 5 cm or 10 cm (or manufacturer specified).
  • Measuring directions: five directions shown in the standard (or the most critical direction specified by the manufacturer).
  • Background noise: at least 10 dB lower than DUT noise level (anechoic chamber recommended).
  • Cycling condition: 10 cycles per second.
  • Coil conditions: rated voltage; tests with and/or without suppression diode as applicable.
• Noise immunity levels
  • Three severity levels for 20 Hz–2 000 Hz for 1 hour:
    • Level A = 140 dB +6 dB
    • Level B = 150 dB +6 dB
    • Level C = 160 dB +6 dB
  • During immunity test: coil energized 30 min, de‑energized 30 min.
  • Functional criterion: no contact state changes (opening/closing) exceeding 10 µs, unless otherwise specified by the manufacturer.
• Evaluation and reporting
  • Acceptance limits and specific test conditions are typically specified by the manufacturer or application standards.
  • Test report must record conditions, measured levels, directions, distances and any deviations.

Applications

• Product development and design verification for relays where audible noise affects user experience or system performance.
• Qualification testing for aerospace and other safety‑critical applications where acoustic disturbances may impair relay function.
• Manufacturing quality control and type testing to confirm compliance with product noise specifications.
• Acoustic benchmarking for equipment integrators, system designers and environmental compliance.

Who should use this standard

• Relay manufacturers and component designers
• Test laboratories and acoustics engineers
• Aerospace, automotive and railway qualification teams
• Compliance officers and product certification bodies

Related standards

• IEC 63522‑0: General and guidance for relay tests and measurements
• IEC 61672‑1: Electroacoustics - Sound level meters (used for measurement specifications)

Keywords: EN IEC 63522-32:2025, IEC 63522-32, electrical relays, acoustic noise, noise emission, noise immunity, relay testing, sound level meter, acoustic measurements.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2025
Električni releji - Preskusi in meritve -32. del: Akustični šum
Electrical relays - Tests and Measurements - Part -32: Acoustic Noise
Elektromechanische Elementarrelais – Prüfungen und Messungen – Teil -32:
Störgeräusche
Relais électriques - Essais et mesurages - Partie 32: Bruit acoustique
Ta slovenski standard je istoveten z: EN IEC 63522-32:2025
ICS:
17.140.01 Akustična merjenja in Acoustic measurements and
blaženje hrupa na splošno noise abatement in general
29.120.70 Releji Relays
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63522-32

NORME EUROPÉENNE
EUROPÄISCHE NORM June 2025
ICS 29.120.70
English Version
Electrical relays - Tests and measurements - Part 32: Acoustic
noise
(IEC 63522-32:2025)
Relais électriques - Essais et mesurages - Partie 32: Bruit Elektrische Relais - Mess- und Prüfverfahren - Teil 32:
acoustique Störgeräusche
(IEC 63522-32:2025) (IEC 63522-32:2025)
This European Standard was approved by CENELEC on 2025-05-22. 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 63522-32:2025 E

European foreword
The text of document 94/1066/FDIS, future edition 1 of IEC 63522-32, 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.
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 63522-32:2025 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 61810-1 NOTE Approved as EN 61810-1

Under preparation. Stage at the time of publication: prEN IEC 63522-0:2024.
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 61672-1 - Electroacoustics - Sound level meters - EN 61672-1 -
Part 1: Specifications
2 3
IEC 63522-0 — Electrical relays - Tests and Measurements EN IEC 63522-0 —
- Part 0: General and Guidance

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 63522-32 ®
Edition 1.0 2025-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical relays – Tests and measurements –
Part 32: Acoustic Noise
Relais électriques – Essais et mesurages –
Partie 32: Bruit acoustique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.70 ISBN 978-2-8327-0348-9
– 2 – IEC 63522-32:2025 © IEC 2025
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Test procedure . 5
4.1 Purpose . 5
4.2 Procedure . 6
4.2.1 Test for noise emission . 6
4.2.2 Test for noise immunity . 6
4.3 Conditions . 7
4.3.1 General. 7
4.3.2 Conditions for noise emissions . 7
4.3.3 Conditions for noise immunity . 7
5 Evaluation . 7
5.1 General . 7
5.1.1 Evaluation for noise emission . 7
5.1.2 Evaluation for noise immunity . 7
5.2 Test report . 7
Bibliography . 9

Figure 1 – Installation for the test for acoustic emission . 6

IEC 63522-32:2025 © IEC 2025 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL RELAYS –
TESTS AND MEASUREMENTS –
Part 32: Acoustic noise
FOREWORD
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