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These signals from each line bay (ABC_LINE), each transformer bay (AB_TRAFO), and each bus-
coupler bay (ABC_BC) are needed:
Signal
189OPTR
189 is open.
289OPTR
289 is open (AB_TRAFO, ABC_LINE).
22089OTR
289 and 2089 are open (ABC_BC).
VP189TR
The switch status of 189 is valid.
VP289TR
The switch status of 289 is valid.
V22089TR
The switch status of 289 and 2089 are valid.
EXDU_BB
No transmission error from the bay that contains the above information.
If there is an additional bus-section disconnector, the signal from the bus-section disconnector
bay (A1A2_DC) must be used:
Signal
DCOPTR
The bus-section disconnector is open.
VPDCTR
The switch status of bus-section disconnector DC is valid.
EXDU_DC
No transmission error from the bay that contains the above information.
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
189 is open.
289OPTR
289 is open.
VP189TR
The switch status of 189 is valid.
VP289TR
The switch status of 289 is valid.
EXDU_BS
No transmission error from the bay BS (bus-section coupler bay) that contains
the above information.
For a bus-section disconnector, these conditions from the A1 busbar section are valid:
Section 10
1MRK 505 287-UUS B
Control
152
Busbar protection REB650
Application manual
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Summary of Contents for RELION 650 SERIES
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