Interlocking For Bus-Section Breaker A1A2_Bs - ABB REG670 Applications Manual

Section 15
Control
15.3.5
15.3.5.1
15.3.5.2
528
• QB4_OP = 1
• QB4_CL = 0

Interlocking for bus-section breaker A1A2_BS

Application
The interlocking for bus-section breaker (A1A2_BS) function is used for one bus-
section circuit breaker between section 1 and 2 according to figure 254. The function
can be used for different busbars, which includes a bus-section circuit breaker.
WA1 (A1)
QC1
IEC04000516 V1 EN
Figure 254: Switchyard layout A1A2_BS
The signals from other bays connected to the module A1A2_BS are described below.
Signals from all feeders
If the busbar is divided by bus-section circuit breakers into bus-sections and both
circuit breakers are closed, the opening of the circuit breaker must be blocked if a bus-
coupler connection exists between busbars on one bus-section side and if on the other
bus-section side a busbar transfer is in progress:
(WA1)A1
(WA2)B1
(WA7)C
ABC_LINE
IEC04000489 V1 EN
Figure 255: Busbars divided by bus-section circuit breakers
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
WA2 (A2)
QB1 QB2
QA1
QC3 QC4
A1A2_BS
Section 1
A1A2_BS
ABC_BC
B1B2_BS
AB_TRAFO ABC_LINE
1MRK 502 071-UEN -
QC2
en04000516.vsd
Section 2
ABC_BC
AB_TRAFO
en04000489.vsd
Application manual
A2
B2
C