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DIN EN IEC 63522-12 VDE 0435-2027-12:2025-09

Electrical relays – Tests and measurements

Part 12: Internal moisture

(IEC 63522-12:2025); German version EN IEC 63522-12:2025
Class/Status: Standard, valid
Released: 2025-09
VDE Art. No.: 0400707

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 specimens to perform under expected conditions of transportation, storage and all aspects of operational use.
It is used to determine whether internal moisture has an adverse effect on certain properties of the relay. This test is only applicable to RT III, RT IV and RT V relays, i.e. wash tight, sealed and hermetically sealed relays.