ANSI04000504 V1 EN
Figure 87: Switchyard layout BB_ES (3)
The signals from other bays connected to the module BB_ES are described below.
10.4.4.2 Signals in single breaker arrangement
The busbar grounding switch is only allowed to operate if all disconnectors of the bus-
section are open.
en04000505_ansi.vsd
Section 1 Section 2
A1A2_DC(BS)
B1B2_DC(BS)
AB_TRAFO ABC_LINE
BB_ES
ABC_LINE
(WA1)A1
(WA2)B1
(WA7)C C
B2
A2
BB_ESABC_BC
ANSI04000505 V1 EN
Figure 88: Busbars divided by bus-section disconnectors (circuit breakers)
The interlocking functionality in 650 series cannot handle the transfer bus
(WA7)C.
To derive the signals:
Signal
BB_DC_OP All disconnectors on this part of the busbar are open.
VP_BB_DC The switch status of all disconnector on this part of the busbar is valid.
EXDU_BB No transmission error from any bay containing 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 511 286-UUS A Section 10
Control
227
Application manual
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