Detail MBCI 01 ALstom Differential Feeder And Transformer Feeder Protection
MBCI Pilot wire differential protection relay • High stability for through faults • High speed operation for in-zone faults • Simultaneous tripping of relays at each line end • Low current transformer requirements • Low earth fault settings • Designed for the unit protection of overhead and underground feeders • Suitable for pilots up to 1k© or 2.5k© with pilot isolation transformers • Four electrically separate contacts • Can be used as definite time overcurrent relay in the event of pilot failure
