JB/T 3347-1996 (English Version) PDF

Scope: This standard specifies the classification, technical requirements, inspection methods, inspection rules, marking, packaging, transportation, storage, etc. of negative sequence and zero sequence current incremental relays. This standard applies to negative sequence and zero sequence current incremental relays composed of negative sequence and zero sequence current filters and incremental output circuits. This relay is used as a starting element for fault identification in relay protection devices of power systems of 500kV and below. This standard serves as the basis for the design, production and use of such relays. This standard applies only to newly manufactured relays. This standard does not apply to negative sequence and zero sequence current relays.

JB/T 3347-1996 history