Description
فروش رله آ ب ب ABB RAHB
– Single-phase, three-phase and three-phase unconditional start
– Selectable current detection criteria
– A patented adaptable current detector principle improves time coordination
– Single-phase, three-phase and three-phase unconditional relay functions, all have
different settable time delays for different types of faults
– Re-trip function for faulted circuit-breaker
– Instantaneous back-up trip is enabled when protected circuit-breaker is out-of-order
– Additional back-up trip stage
– Suitable for one and a half breaker systems
– Phase current measuring, under and overcurrent detection levels
– External blocking via binary input
– Internal blocking during single-phase reclosing
– Setting parameters settable and readable via HMI
– English or Swedish dialog
– Two binary inputs for selected functions
– Five binary output relays
– Service values (primary/secondary) and disturbance information
– Service value recording
– Start and trip presentation via HMI and LED’s
– Self-supervision with output error signal
– Testing of output relays and operation of binary inputs via HMI
– RAHB 411 can serve as a cost effective back-up protection to a REL 5xx line terminal
in transmission systems
– RAHB 411 can replace earlier breaker failure relays for example RAICA
ABB-BREAKER FAILER RELAY
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