If there is no second busbar B at the other side of the transformer and therefore no 489
disconnector, then the state for
489 is set to open by setting the appropriate module
inputs as follows:
• 489_OP = 1
• 489_CL = 0
15.3.5 Interlocking for bus-section breaker A1A2_BS (3)
IP14154-1 v2
15.3.5.1 Application
M15110-3 v7
The interlocking for bus-section breaker (A1A2_BS ,3) function is used for one bus-
section circuit breaker between section 1 and 2 according to figure
335. The function
can be used for different busbars, which includes a bus-section circuit breaker
.
WA1 (A1)
289
489G
189
389G
WA2 (A2)
en04000516_ansi.vsd
289G
189G
A1A2_BS
152
ANSI04000516 V1 EN-US
Figure 335: Switchyard layout A1A2_BS (3)
M15111-4 v3
The signals from other bays connected to the module A1A2_BS are described below.
15.3.5.2 Signals from all feeders
M15111-6 v4
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:
1MRK 504 163-UUS A Section 15
Control
Transformer protection RET670 2.2 ANSI 733
Application manual
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