ABB REC 561 User Manual page 421

1MRK 580 151-XEN
Page 6 - 136
4.2.8 Bus earthing switch
4.2.8.1 Signals in single
breaker arrangement
Interlocking
The same type of module (A1A2_DC) is used for different busbars, that
is, for both bus-section disconnector A1A2_DC and B1B2_DC. But for
B1B2_DC, corresponding signals from busbar B are used.
Section 1
A1
B1
BH_LINE BH_LINE
Fig. 33 Busbars divided by bus-section disconnectors (circuit break-
ers)
The project-specific logic are the same as for the logic for the double-
breaker configuration. See "Signals in double-breaker arrangement" on
page 132.
A1DC_OP
Signal if all disconnectors on busbar A1 are open.
A2DC_OP
Signal if all disconnectors on busbar A2 are open.
VPA1_DC
The switch status of A1_DC is valid.
VPA2_DC
The switch status of A2_DC is valid.
EXDUP_BB
Signal if there is no transmission error from bay BH (breaker and a half)
that contains the above information.
The busbar earthing switch is only allowed to operate if all disconnectors
of the bus section are open.
Section 1
A1
B1
C
ABC_BC
BB_ES
ABC_LINE
Fig. 34 Busbars divided by bus-section disconnectors (circuit breakers)
ABB Network Partner AB
Section 2
A1A2_DC(BS)
B1B2_DC(BS)
BH_LINE BH_LINE
Section 2
A1A2_DC(BS)
B1B2_DC(BS)
AB_TRAFO
ABC_LINE
Version 1.0-00
A2
B2
(X80151-33)
A2
B2
C
BB_ES
(X80151-34)