1.3.3. Base
Made up of the cable compartment and the gas relief
compartment:
Cable compartment
Located in the lower front section of the cubicle and has
a cover interlocked with the earthing switch, thus allowing
front access to the medium voltage cables.
As standard, designed to contain up to:
1. Two shielded screw-in terminals (reduced) per phase
or one terminal (reduced) plus surge arrester (reduced)
with space for the corresponding incoming power
cables.
2. Cable ties for the power cables.
3. Earthing bars.
As an option:
1. Two symmetric terminals or symmetric terminal plus
symmetric surge arrester.
2. Metallic voltage transformers.
Figure 1.3. Cable compartment
Gas relief compartment
Ormazabal's cgmcosmos system is designed and
constructed to withstand at least the thermal and dynamic
eects of an arc of 16 kA for 1 seconds should a defect
result in an internal arc in the gas compartment. The system
conducts the gases generated in a fully controlled manner
to avoid any possible injury to people in the equipment
operation area.
Optionally, a gas expansion relief duct can be
positioned in the rear of the cubicle to redirect the
gases to the top section. Please check with Ormazabal.
IG-296-EN version 01; 12/03/2020
7
General instructions
cgmcosmos: Medium voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard
General description