DIN EN IEC 63522-18
; VDE 0435-2027-18:2025-11
Electrical relays - Tests and measurements - Part 18: Thermal resistance of the coil (IEC 63522-18:2025); German version EN IEC 63522-18:2025
Elektrische Relais - Mess- und Prüfverfahren - Teil 18: Wärmewiderstand der Spule (IEC 63522-18:2025); Deutsche Fassung EN IEC 63522-18:2025
Overview
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 DUTs to perform under expected conditions of transportation, storage and all aspects of operational use. The object of this test is to determine the thermal resistance of the relay coil. Application of this document increases investment security for manufacturers and users, provides testing laboratories and manufacturers with defined information for testing, and enhances product compatibility between manufacturers.