These signals from each bus-coupler bay (ABC_BC) are needed:
Signal
BC12CLTR A bus-coupler connection through the own bus-coupler exists between busbar WA1
and WA2.
BC17OPTR No bus-coupler connection through the own bus-coupler between busbar WA1 and
WA7.
BC17CLTR A bus-coupler connection through the own bus-coupler exists between busbar WA1
and WA7.
BC27OPTR No bus-coupler connection through the own bus-coupler between busbar WA2 and
WA7.
BC27CLTR A bus-coupler connection through the own bus-coupler exists between busbar WA2
and WA7.
VPBC12TR The switch status of BC_12 is valid.
VPBC17TR The switch status of BC_17 is valid.
VPBC27TR The switch status of BC_27 is valid.
EXDU_BC No transmission error from the bay that contains the above information.
These signals from each bus-section disconnector bay (A1A2_DC) are also needed.
For B1B2_DC, corresponding signals from busbar B are used. The same type of
module (A1A2_DC) is used for different busbars, that is, for both bus-section
disconnector A1A2_DC and B1B2_DC.
Signal
DCOPTR The bus-section disconnector is open.
DCCLTR The bus-section disconnector is closed.
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 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:
1MRK 506 369-UEN B Section 15
Control
Line distance protection REL670 2.2 IEC 661
Application manual
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