ABB REC 561 User Manual page 426

ABB Network Partner AB
Version 1.0-00
4.2.8.2 Signals in double-
breaker arrangement
Interlocking
For a busbar earthing switch on bypass busbar C, these conditions are
valid:
Q7OPTR (bay 1)
. . .
. . .
. . .
Q7OPTR (bay n)
VPQ7TR (bay 1)
. . .
. . .
. . .
VPQ7TR (bay n)
EXDUP_BB (bay 1)
. . .
. . .
. . .
EXDUP_BB (bay n)
Fig. 39 Signals from bypass busbar to busbar earthing switch
The busbar earthing switch is only allowed to operate if all disconnectors
of the bus section are open.
Section 1
A1
B1
BB_ES
Fig. 40 Busbars divided by bus-section disconnectors (circuit break-
ers)
To derive the signals:
ABCDC_OP
Signal if all disconnectors of this busbar section are open.
VP_ABCDC
The switch status of ABCDC is valid.
EXDUP_BB
Signal if there is no transmission error from any bay that contains the
above information.
&
&
&
Section 2
A1A2_DC(BS)
B1B2_DC(BS)
DB_BUS
DB_BUS
1MRK 580 151-XEN
Page 6 - 141
ABCDC_OP
VP_ABCDC
EXDUP_BB
(X80151-39)
A2
B2
BB_ES
(X80151-40)