If the busbar is divided by bus-section circuit breakers, the signals from the bus-section
coupler bay (A1A2_BS), rather than the bus-section disconnector bay (A1A2_DC) must
be used. For B1B2_BS, corresponding signals from busbar B are used. The same type of
module (A1A2_BS) is used for different busbars, that is, for both bus-section circuit
breakers A1A2_BS and B1B2_BS.
Signal
S1S2OPTR No bus-section coupler connection between bus-sections 1 and 2.
S1S2CLTR A bus-section coupler connection exists between bus-sections 1 and 2.
VPS1S2TR The switch status of bus-section coupler BS is valid.
EXDU_BS No transmission error from the bay that contains the above information.
For a line bay in section 1, these conditions are valid:
Section 15 1MRK 506 369-UUS -
Control
704 Line distance protection REL670 2.2 ANSI
Application manual
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