62
Figure 111: Removing of screws and security covers.
IEC version (front fused VTs)
1. Apply earth to the circuit by moving the three-
position disconnector to the EARTH position (see
par. 8.3.3.) and closing the circuit-breaker.
Note:
Electrical tripping of the circuit-breaker is disabled
when the three-position disconnector is in the
EARTH position.
2. Remove the screws front and security covers
(Figure 111)
3. Access to MV removable fuses or/ links. (Figure
112). If replacing fuses / links, make sure the new
ones are installed correctly
WARNING
Make sure that the rated normal current value
of the fuses to be installed is the same as the
one indicated on the fuse-holder nameplate.
4. Re-mount the external cover and make sure that
the screws are fully tightened
WARNING
In order to ensure internal arc protection, it
must be checked that the screws are fully
tightened.
Figure 112: Fuse.
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