Interlocking For Bus-Section Breaker A1A2_Bs; Application; Signals From All Feeders - ABB 650 series Applications Manual

1MRK 511 423-UEN A
8.3.5
8.3.5.1
8.3.5.2
Bay control REC650 2.2 IEC
Application manual
If there is no second busbar B at the other side of the transformer and therefore no
QB4 disconnector, then the state for QB4 is set to open by setting the appropriate
module inputs as follows:
• 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 59. The function
can be used for different busbars, which includes a bus-section circuit breaker.
WA1 (A1)
QC1
IEC04000516 V1 EN-US
Figure 59: 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:
WA2 (A2)
QB1 QB2
QA1
QC3 QC4
A1A2_BS
Section 8
Control
QC2
en04000516.vsd
IP14154-1 v2
M15110-3 v7
M15111-4 v3
M15111-6 v4
141