General instructions
Installation
IG-136-EN version 10; 23/06/2016
26
cgm.3 system
Fully SF6 gas insulated medium voltage switchgear up to 40.5 kV in accordance with IEC Standards
4.5 Fastening to the floor
Before assembling the cubicles, the floor must be carefully
levelled to prevent any deformation which may make it
difficult to connect the cubicles to one another.
The cubicles can be fastened to the floor in two ways:
4.5.1 Fastening to the floor on profile
If the floor of the facility is not sufficiently uniform, it is
advisable to install the medium voltage cubicles on an
auxiliary profile, to make it easier to connect. This profile,
which can be supplied to order, must be anchored to the
floor using expansion screws.
A Screw M10x25
B 65 x 65 x 4 mm profile
C Anchoring support
Figure 4.11 Fastening cubicles on profile
4.5.2 Fastening to the floor by anchoring
If the floor of the installation is level enough, it is advisable
to install the medium voltage cubicle anchored directly to
the floor.
The sequence for anchoring the cubicles to the floor is as
follows:
1. The cubicle's switch must be in the earthing position
[13]
.
By default, the cubicles are supplied with the
switch in earthing position. Except in circuit
breaker functions, which will be in disconnected
position.
2. Remove the cable compartment cover, using the
central handle on the cover to pull it up and forward.
[13]
See section 5.
Operations sequence
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