IEC 60050-445 pdf download International Electrotechnical Vocabulary – Part 445: Time relays 1Scope This part of lEC 60050 defines terms related to specified-time relays. ln the past, IEC 60050-446(Part 446 of the lEV) listed the terminology for all types of electricalrelays. In order to improve the precision of terms and definitions as well as the general visibilityof relay terminology, it...