Interlocking For Transformer Bay Ab_Trafo (3) - ABB REC650 Applications Manual

1MRK 511 286-UUS A
10.4.11
10.4.11.1
10.4.11.2
Application manual

Interlocking for transformer bay AB_TRAFO (3)

Application
The interlocking for transformer bay (AB_TRAFO, 3) function is used for a transformer
bay connected to a double busbar arrangement according to figure 124. The function is
used when there is no disconnector between circuit breaker and transformer. Otherwise,
the interlocking for line bay (ABC_LINE, 3) function can be used. This function can also
be used in single busbar arrangements.
189
289
189G
152
289G
389G
252
489G
389 489
ANSI04000515 V1 EN
Figure 124: Switchyard layout AB_TRAFO (3)
The signals from other bays connected to the module AB_TRAFO are described below.
Signals from bus-coupler
If the busbar is divided by bus-section disconnectors into bus-sections, the busbar-busbar
connection could exist via the bus-section disconnector and bus-coupler within the other
bus-section.
WA1 (A)
WA2 (B)
AB_TRAFO
252 and 489G are not
used in this interlocking
en04000515_ansi.vsd
Section 10
Control
261