EN IEC 63522-24 EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHENORM June2025 ICS29.120.70 English Version Electrical relays - Tests and measurements -Part 24: Load transfer (IEC 63522-24:2025) Relais electriques - Essais et mesurages - Partie 24: Elektrische Relais - Mess- und Prufverfahren - Teil 24: Transfert de charge Lastobertragung (IEC63522-24:2025) (IEC 63522-24:2025) This European Standard was approved by CENELEC on 2025-05-28. CENELEC members are bound to comply with the CEN/CENELEC Intermal 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 Centreorto any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation 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, Turkiye and the United Kingdom. EuropeanCommitteeforElectrotechnical Standardization Comite Europeen deNormalisation Electrotechnique Europaisches Komitee fir 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.ENIEC63522-24:2025E EN IEC 63522-24:2025 (E) European foreword The text of document 94/1054/FDIS, future edition 1 of IEC 63522-24, prepared by TC 94 "Electrical relays"was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as ENIEC63522-24:2025. The following dates are fixed: latest datebywhich 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or by endorsement latest date by which the national standards conflicting with the (dow) 2028-06-30 document have to be withdrawn Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.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:-1. Any feedback and questions on this document should be directed to the users' national committee. A complete listing of these bodies can be found onthe CENELEC website. Endorsement notice The text of the International Standard IEC 63522-24:2025 was approved by CENELEC as a European Standard without any modification. 1 Under preparation. Stage at the time of publication: prEN IEC 63522-0:2024. ENIEC63522-24:2025 (E) 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 undated references, the latest edition of the referenced document (including any amendments) applies. 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 63522-0 Electrical relays - Tests and Measurements _2 ENIEC63522-0 _3 - Part O: General and Guidance IEC 63522-44 Electrical relays -Tests and measurements EN IEC 63522-45 - Part 4: Dielectric strength test IEC 63522-6 Electrical relays -Tests andmeasurements ENIEC63522-6 - Part 6: Contact-circuit resistance or voltage drop IEC 63522-7 Electrical relays-Testsandmeasurements ENIEC63522-7 - Part 7: Functional tests 2 Under preparation. Stage at the time of publication: IEC CDV 6352