ABB REC 561 User Manual page 407

1MRK 580 151-XEN
Page 6 - 122
4.2.3 Single breaker
arrangement,
transformer bay
4.2.3.1 Signals from bus cou-
pler
Interlocking
If there is no second busbar B and therefore no Q20 and Q2 disconnectors,
then the interlocking for Q20 and Q2 are not used. The states for Q20, Q2,
Q25, BC_AB, BBTR are set to open by setting the appropriate module
inputs as follows. In the functional block diagram, 0 and 1 are designated
0=FIXD-OFF and 1=FIXD-ON:
• Q20_OP = 1
• Q20_CL = 0
• Q2_OP = 1
• Q2_CL = 0
• Q25_OP = 1
• Q25_CL = 0
• BC_AB_CL = 0
• BBTR_OP = 1
If the busbar is divided by bus-section disconnectors into bus sections, the
busbar-busbar connection could exist via the bus-section disconnector and
bus coupler within the other bus section.
Section 1
A1
B1
C
AB_TRAFO ABC_BC
Fig. 19 Busbars divided by bus-section disconnectors (circuit break-
ers)
The project-specific logic for input signals concerning bus coupler are the
same as the specific logic for the line bay (ABC_LINE):
BC_AB_CL
Signal if a bus-coupler connection exists between busbar A and B.
VP_BC_AB
The switch status of BC_AB is valid.
ABB Network Partner AB
Section 2
A1A2_DC(BS)
B1B2_DC(BS)
AB_TRAFO ABC_BC
Version 1.0-00
A2
B2
C
(X80151-19)