ABB Relion 650 Series Applications Manual page 158

Section 10
Control
These signals from each line bay (ABC_LINE), each transformer bay (AB_TRAFO), and each bus-
coupler bay (ABC_BC) are needed:
Signal
189OPTR
289OPTR
22089OTR
VP189TR
VP289TR
V22089TR
EXDU_BB
If there is an additional bus-section disconnector, the signal from the bus-section disconnector
bay (A1A2_DC) must be used:
Signal
DCOPTR
VPDCTR
EXDU_DC
If there is an additional bus-section circuit breaker rather than an additional bus-section
disconnector the signals from the bus-section, circuit-breaker bay (A1A2_BS) rather than the bus-
section disconnector bay (A1A2_DC) must be used:
Signal
189OPTR
289OPTR
VP189TR
VP289TR
EXDU_BS
For a bus-section disconnector, these conditions from the A1 busbar section are valid:
152
189 is open.
289 is open (AB_TRAFO, ABC_LINE).
289 and 2089 are open (ABC_BC).
The switch status of 189 is valid.
The switch status of 289 is valid.
The switch status of 289 and 2089 are valid.
No transmission error from the bay that contains the above information.
The bus-section disconnector is open.
The switch status of bus-section disconnector DC is valid.
No transmission error from the bay that contains the above information.
189 is open.
289 is open.
The switch status of 189 is valid.
The switch status of 289 is valid.
No transmission error from the bay BS (bus-section coupler bay) that contains
the above information.
© Copyright 2013 ABB. All rights reserved
1MRK 505 287-UUS B
Busbar protection REB650
Application manual