Interlocking For Busbar Grounding Switch Bb_Es (3) - ABB REL650 Applications Manual

Section 11
Control
11.5.4
11.5.4.1
11.5.4.2
348
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.

Interlocking for busbar grounding switch BB_ES (3)

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.
Signals in single breaker arrangement
The busbar grounding switch is only allowed to operate if all disconnectors of the bus-
section are open.
Section 1
(WA1)A1
(WA2)B1
(WA7)C
BB_ES
ABC_LINE
ANSI04000505 V1 EN
Figure 152: Busbars divided by bus-section disconnectors (circuit breakers)
A1A2_DC(BS)
B1B2_DC(BS)
ABC_BC
AB_TRAFO
1MRK 506 334-UUS A
Section 2
A2
B2
C
BB_ES
ABC_LINE
en04000505_ansi.vsd
Application manual