• BC_12_CL = 0
• VP_BC_12 = 1
•
BBTR_OP = 1
• VP_BBTR = 1
12.4.4 Interlocking for transformer bay AB_TRAFO
IP14149-1 v2
12.4.4.1 Application
M13567-3 v7
The interlocking for transformer bay (AB_TRAFO) function is used for a
transformer bay connected to a double busbar arrangement according to figure
94.
The function is used when there is no disconnector between circuit breaker and
transformer. Otherwise, the interlocking for line bay (ABC_LINE) function can be
used. This function can also be used in single busbar arrangements.
QB1 QB2
QC1
QA1
QC2
WA1 (A)
WA2 (B)
QA2
QC3
T
QC4
QB4QB3
QA2 and QC4 are not
used in this interlocking
AB_TRAFO
en04000515.vsd
IEC04000515 V1 EN-US
Figure 94: Switchyard layout AB_TRAFO
M13566-4 v4
The signals from other bays connected to the module AB_TRAFO are described
below.
Section 12 1MRK 506 375-UEN A
Control
266 Railway application RER670 2.2 IEC
Application manual
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