Interlocking For Bus-Section Breaker A1A2_Bs (3) - ABB RELION 670 SERIES Applications Manual

1MRK 506 369-UUS -
15.4.5
15.4.5.1
15.4.5.2
Line distance protection REL670 2.2 ANSI
Application manual
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

Interlocking for bus-section breaker A1A2_BS (3)

Application
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 336. The function can
be used for different busbars, which includes a bus-section circuit breaker.
WA1 (A1)
189G
ANSI04000516 V1 EN
Figure 336: Switchyard layout A1A2_BS (3)
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)
189 289
152
489G
389G
A1A2_BS
Section 15
289G
en04000516_ansi.vsd
Control
715