EVS-EN 60255-3:2003

Applicable to electrical measuring relays and protection equipment having a single input energizing quantity and where the operating time is independent or dependent on this quantity. It excludes thermal electrical relays which are specified in EN 60255-8. This standard is a third-level publikation (Standards applicable wholly or partly to a particular group of relays) and states the particular requirements for this type of relays. Is to be read in conjunction with higher level documents in the EN 60255 and IEC 60255 series.