Interlocking For Busbar Earthing Switch Bb_Es - ABB REG670 Applications Manual

1MRK 502 071-UEN -
15.3.7
15.3.7.1
15.3.7.2
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual
Section 1
(WA1)A1
(WA2)B1
BH_LINE
IEC04000503 V1 EN
Figure 269: Busbars divided by bus-section disconnectors (circuit breakers)
The project-specific logic is the same as for the logic for the double-breaker
configuration.
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 breaker and a half (BH) that contains the above
information.

Interlocking for busbar earthing switch BB_ES

Application
The interlocking for busbar earthing switch (BB_ES) function is used for one busbar
earthing switch on any busbar parts according to figure 270.
QC
en04000504.vsd
IEC04000504 V1 EN
Figure 270: Switchyard layout BB_ES
The signals from other bays connected to the module BB_ES are described below.
Signals in single breaker arrangement
The busbar earthing switch is only allowed to operate if all disconnectors of the bus-
section are open.
A1A2_DC(BS)
B1B2_DC(BS)
BH_LINE
Section 15
Section 2
A2
B2
BH_LINE BH_LINE
en04000503.vsd
Control
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