ABB Switzerland Ltd REG 316*4 1MRB520049-Uen / Rev. F
3-284
Ext Trip t2
Input for signals from the other BFP units in the station.
F: No external trip after t2
T: External trip after t2
xx: all binary inputs (or outputs of protection functions).
Ext Trip EFP
Input for signals from the end zone fault outputs of the other
BFP units in the station.
F: No trip for end zone fault
T: Trip for end zone fault
xx: all binary inputs (or outputs of protection functions).
Trip t1
signals a trip which is activated by one of the following logics:
· Repeat trip (see “Retrip t1”)
· External trip (see “Ext Trip t1”)
· Unconditional trip (see “UnconTrip t1”).
Trip t1 L1, L2 or L3
signals a repeat trip of phase L1, L2 or L3.
Trip t2
signals a backup trip. This signal is activated by the following
logics:
· Backup trip after t2 (see “Backup Trip t2”)
· Unconditional trip after t2 (see “UnconTrip t2”).
Remote Trip
signals a transfer trip.
Red Trip L1, L2 or L3
signals a redundant trip of phase L1, L2 or L3.
EFP Rem Trip
signals an end zone trip. This signal is an impulse of length ‘t
Puls Rem Trip’ generated when the EFP timer has timed out.
EFP Bus Trip
signals an end zone trip. This signal is generated when the
EFP timer has timed out and resets ‘tDrop Bu Trip’ after the
initiating signal has reset.
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