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Interlocking
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The interlocking module ABC_BC is used for a bus-coupler bay connected to a double
busbar arrangement according to figure 125. The module can also be used for a single
busbar arrangement with transfer busbar or double busbar arrangement without transfer
busbar.
Q1
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Q2
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The signals from other bays connected to the bus-coupler module ABC_BC are de-
scribed below.
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To derive the signals:
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BBTR_OP
Signal if no busbar transfer is in progress concerning this bus coupler.
VP_BBTR
The switch status of BBTR is valid.
EXDUP_AB
Signal if there is no transmission error from any bay connected to the AB
busbars.
A (BB1)
B (BB2)
C(TB)
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Q52
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249
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