DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
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
Elektrische Relais - Mess- und Prüfverfahren - Teil 12: Interne Luftfeuchtigkeit (IEC 63522-12:2025); Deutsche Fassung EN IEC 63522-12:2025
Overview
This document is used for testing electromechanical elementary relays (electromechanical relays, reed relays, reed contacts, reed switches and technology combination of these) and evaluates their ability to perform under expected conditions of transportation, storage, and all aspects of operational use. This document defines a standard test method to provoke internal moisture inside relays by different methods. The device under test (DUT) is tested at its specified energization values throughout the defined temperature range. The test methods in this document are applicable to RT III, RT IV and RT V products only, that is wash-tight, sealed, and hermetically sealed DUTs. The standard describes test methods and evaluation. Application of this standard increases investment security for manufacturers and users, while testing laboratories and manufacturers are provided with defined specifications for testing.