12.4.9.1 Introduction
The interlocking for a double busbar double circuit breaker bay including DB_BUS_A
(3), DB_BUS_B (3) and DB_LINE (3) functions are used for a line connected to a
double busbar arrangement according to figure
369.
WA1 (A)
WA2 (B)
189
189G
289G
989G
6189
989
289
489G
589G
389G
6289
DB_BUS_B
DB_LINE
DB_BUS_A
en04000518_ansi.vsd
252
152
ANSI04000518 V1 EN
Figure 369: Switchyard layout double circuit breaker
Three types of interlocking modules per double circuit breaker bay are defined.
DB_LINE (3) is the connection from the line to the circuit breaker parts that are
connected to the busbars. DB_BUS_A (3) and DB_BUS_B (3) are the connections
from the line to the busbars.
Section 12 1MRK505222-UUS C
Control
726
Technical reference manual
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