General Instructions
Operations sequence
48
cpg.1
Fully SF6 gas insulated single and double busbar GIS switchgears up to 36 kV in accordance
with IEC Standards
IG-137-EN version 03; 24/06/2016
7.5.3 Busbar earthing on the left
Initial conditions
: feeder disconnectors open,
earthing switches open and circuit breaker
open.
1. First connect the left feeder disconnector by turning
the lever clockwise.
Figure 7.33
Lever turn detail
2. Then connect the right earthing switch by turning the
lever clockwise.
Figure 7.34
Lever turn detail
3. The circuit breaker closes instantaneously on removal
of the driving lever once the operation is complete.
Figure 7.35
Circuit breaker closed detail
To open the earthing 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 Ormazabal cpg.1 Series
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