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Interlocking
Section 1
A1
B1
C
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The following signals from each bus-section disconnector bay (A1A2_DC) are 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.
6LJQDO
DCOPTR
Signal if the bus-section disconnector is open.
VPDCTR
The switch status of A1A2_DC is valid.
EXDUP_DC
Signal if there is no transmission error from the bay that contains the above
information. This signal is taken from the data valid output on the command
function block.
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),
have to 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-sec-
tion circuit breakers A1A2_BS and B1B2_BS.
6LJQDO
A1A2OPTR
Signal if there is no bus-section coupler connection between bus sections
A1 and A2.
VPA1A2TR
The switch status of A1A2_DC is valid.
EXDUP_BS
Signal if there is no transmission error from the bay that contains the above
information. This signal is taken from the data valid output on the command
function block.
Section 2
A1A2_DC(BS)
B1B2_DC(BS)
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