IG-183-EN version 06; 31/03/2020
36
Installation
General instructions
cgm.3 system: medium voltage SF
6
gas-insulated
cubicles up to 38 kV according to IEEE and CSA standards
4.5. Connecting the cubicles
The joining of cubicles must be carried out as indicated in
Ormazabal’s Spares and Accessories document RA-163,
which is supplied with the materials kit used for connecting
cubicles.
4.6. Grounding the equipment
For connecting the general grounding collector, follow the
procedures listed below:
1. Screw the ground connection bar between each
2 medium voltage cubicles, at their back side, using 2
M8 x 20 hexagonal screws. Apply a tightening torque
of 15 Nm.
Tools: 0.5118 in (13 mm) spanner.
Torque wrench with 0.5118 in (13 mm) adapter.
Figure 4.22. Grounding the equipment
2. Connect the end grounding bar, marked with the
symbol, to the installation’s general ground connection.
Grounding the equipment is an essential condition for
safety.
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