Installation
General instructions
IG-136-EN version 10; 23/06/2016
29
cgm.3 system
Fully SF6 gas insulated medium voltage switchgear up to 40.5 kV in accordance with IEC Standards
Figure 4.21 Anchoring points in cgm.3-2lv cubicles.
4.6 Connecting the cubicles
The joining of cubicles must be carried out as indicated in
Ormazabal's RA-163 Spares and Accessories document,
which is supplied with the materials kit used for connecting
cubicles.
4.7 Earthing the switchgear
When connecting the general earth collector, follow the
figure below.
Figure 4.22 Equipment earthing
1. Bolt the earth strip between every 2 medium voltage
cubicles, in the rear section, using 2 hexagonal
M8 x 20 bolts. Apply a torque of 15 Nm.
Tools:
13 mm spanner
Torque wrench with 13 mm adapter
2. Connect the end earthing bar, marked with the symbol
, to the general earth connection of the installation.
Earthing the equipment is an essential condition
for safety.
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