15.4.6 Interlocking for bus-section disconnector A1A2_DC
IP14159-1 v2
15.4.6.1 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
338.
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 338: Switchyard layout A1A2_DC
M13542-4 v4
The signals from other bays connected to the module A1A2_DC are described
below.
15.4.6.2 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 339: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
1MRK 506 369-UEN B Section 15
Control
Line distance protection REL670 2.2 IEC 675
Application manual
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