DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN EN 61810-2
; VDE 0435-120:2012-01
Electromechanical elementary relays - Part 2: Reliability (IEC 61810-2:2011); German version EN 61810-2:2011
Elektromechanische Elementarrelais - Teil 2: Funktionsfähigkeit (Zuverlässigkeit) (IEC 61810-2:2011); Deutsche Fassung EN 61810-2:2011
Overview
This standard comprises test conditions and an evaluation method to obtain relevant reliability measures for electromechanical elementary relays. The life of relays as non-repairable items is primarily determined by the number of operations. For this reason, the reliability is expressed in terms of mean cycles to failure (MCTF). Commonly, equipment reliability is calculated from mean time to failure (MTTF) figures. With the knowledge of the frequency of operation (cycling rate) of the relay within equipment, it is possible to calculate an effective MTTF value for the relay in that application. The responsible committee is K 671 "Schaltrelais" ("Relais") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.
