ABB ZX2 - Grounding the Busbar; Busbar Grounding of Double Busbar Systems with Bus Tie

70 ZX2 GAS-INSULATED MEDIUM VOLTAGE SWITCHGEAR
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Fig. 5.2.3.1.1:
Line side ground-
ing, single bus
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Fig. 5.2.3.2.2:
Line side grounding
double bus
BB1 (front)
BB2 (rear)
BB1 (front)
BB2 (rear)
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Fig. 5.2.3.2.1
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Fig. 5.2.3.2.2
Fig. 5.2.3.1.1 to 5.2.3.1.4 show the operating
sequence for grounding of busbar 2 (BB2) in an
example switchgear system.
5.2.3. Grounding the busbar
The busbar can be groundeded via coupling
panels or via an grounding set on a feeder panel.
5.2.3.1. Busbar grounding of double
busbar systems with bus tie