5.10. Fuse replacement sequence
To access the fuse holders, first remove the cable
compartment cover. It is essential to close the earthing
switch.
Proceed as indicated in the following steps:
1.
Since this is a switch-fuse combination cubicle, any of
the three fuses blowing causes the switch-disconnector
to open automatically.
2.
When a fuse blows, this is indicated unequivocally by
the red indicator which appears on the front of the
driving mechanism compartment.
Figure 5.58.
Fuse trip indicator
3.
Close the earthing disconnector.
Figure 5.59.
Close the earthing switch
IG-078-EN version 12; 23/04/2020
79
General Instructions
cgmcosmos
: Medium-voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard
Recommended sequence of operations
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