
ELECTRICAL RELAYS - SPECIFICATION FOR - ALL - OR - NOTHING ELECTRICAL RELAYS
出版:British Standards Institution

專家解讀視頻
Includes terms,definitions and suggested values of unspecified parameters.Does not cover telegraphy,telephony,signalling and blocking railway systems. See also BS 142:Sec 2.1. AMD 9688 RENUMBERS THIS STANDARD
IEC 60255-1-00 : 1ED 75 - Identical