Operations sequence
General instructions
33
cpg.1
GIS-type medium-voltage switchgear with full insulation in gas, up to 38 kV,
in accordance with IEEE Standards
IG-197-US version 02; 07/11/2019
7.3.3 Busbar grounding on the left
Initial conditions: busbar disconnectors open,
grounding disconnectors open and circuit breaker
open.
1. First connect the left busbar disconnector by turning the
lever clockwise.
Figure 7.17
Condition after turning the lever
2. Then connect the right grounding disconnectors by
turning the lever clockwise.
Figure 7.18
Condition after turning the lever
3. The circuit breaker closes instantaneously on removal of
the driving lever once the operation is complete.
Figure 7.19
Condition after removing the lever
To open the grounding connection, proceed in
reverse order. Act on the bottom pushbutton to
open the circuit breaker.
The circuit breaker opening operation is always
performed manually.
Summary of Contents for velatia cpg.1
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