IG-183-EN version 06; 31/03/2020
37
General instructions
cgm.3 system: medium voltage SF
6
gas-insulated
cubicles up to 38 kV according to IEEE and CSA standards
Installation
4.7. Cable connection
The medium voltage incoming and outgoing feeders are
linked to the transformer or other cubicles via cables.
These cables and the corresponding bushings on the cgm.3
system cubicles can be connected with simple (plug-in) or
reinforced (screw-in) connecting points, either IEC type or
IEEE-386 compliant.
The cable compartment contains the connecting cable
bushings for the incoming and outgoing lines, as well as for
the outputs to the transformer.
The size of the cable compartment allows the use of both
insulated and partially insulated terminals.
It is advisable to use fully insulated connectors for
voltages of 36 kV, according to HD 629.
Never touch live connectors, not even screened
connectors. Screening does not constitute a protection
against direct contact.
When the equipment is in service and a reserve cubicle
is left with voltage in the upper busbar and without
the cables in the lower bushings, insulating plugs
must be placed in the bushings or close the grounding
switch and lock that position with a padlock.
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