ABB REL650 - Interlocking for Busbar Grounding Switch BB_ES (3)

specific conditions (Qx_EXy) are set to 1=TRUE if they are not used, except in the
following cases:
• 989_EX2 and 989_EX4 in modules BH_LINE_A and BH_LINE_B
• 152_EX3 in module AB_TRAFO
when they are set to 0=FALSE.
11.5.4 Interlocking for busbar grounding switch BB_ES (3)
11.5.4.1 Application
The interlocking for busbar grounding switch (BB_ES, 3) function is used for one busbar
grounding switch on any busbar parts according to figure 151.
89G
en04000504.vsd
ANSI04000504 V1 EN
Figure 151: Switchyard layout BB_ES (3)
The signals from other bays connected to the module BB_ES are described below.
11.5.4.2 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 152: Busbars divided by bus-section disconnectors (circuit breakers)
Section 11 1MRK 506 334-UUS A
Control
348
Application manual