13.4.6.1 Application
M13544-3 v7
The interlocking for bus-section disconnector (A1A2_DC) function is used for one bus-section
disconnector between section 1 and 2 according to figure
127. A1A2_DC function can be used
for different busbars, which includes a bus-section disconnector.
WA1 (A1) WA2 (A2)
QB
QC1 QC2
A1A2_DC
en04000492.vsd
IEC04000492 V1 EN-US
Figure 127: Switchyard layout A1A2_DC
M13542-4 v4
The signals from other bays connected to the module A1A2_DC are described below.
13.4.6.2 Signals in single breaker arrangement
M13542-6 v5
If the busbar is divided by bus-section disconnectors, the condition
no other disconnector
connected to the bus-section
must be made by a project-specific logic.
The same type of module (A1A2_DC) is used for different busbars, that is, for both bus-section
disconnector A1A2_DC and B1B2_DC. But for B1B2_DC, corresponding signals from busbar B
are used.
Section 1 Section 2
A1A2_DC(BS)
B1B2_DC(BS)
ABC_LINE
ABC_BC
ABC_LINE
(WA1)A1
(WA2)B1
(WA7)C C
B3
A3
en04000493.vsd
AB_TRAFO
AB_TRAFO
A2
B2
IEC04000493 V1 EN-US
Figure 128: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
Signal
S1DC_OP All disconnectors on bus-section 1 are open.
S2DC_OP All disconnectors on bus-section 2 are open.
VPS1_DC The switch status of disconnectors on bus-section 1 is valid.
VPS2_DC The switch status of disconnectors on bus-section 2 is valid.
EXDU_BB No transmission error from any bay that contains the above information.
These signals from each line bay (ABC_LINE), each transformer bay (AB_TRAFO), and each bus-
coupler bay (ABC_BC) are needed:
1MRK 511 358-UEN A Section 13
Control
283
Application manual
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