Fuse compartment
The fuse protection cubicle
cpg
.0-f has separate fuse
holders to house medium voltage fuse-links.
The compartments are pipe-shaped and are fully enclosed
in the gas tank, making them unaffected by pollution. To
remove and insert the fuses in the fuse holder, a carriage
is used to simplify the operation and ensure correct fuse
placement.
The pipe seal consists of an elastic membrane with the
following functions:
• To ensure the water-tightness of the fuse holder
against flooding and thus avoid interior pollution and
degradation.
• Additional insulation to that provided by the fuse holder
carriage insulator.
• To transmit the movement of the fuse striker to the
tripping mechanism, while maintaining the water
tightness of the fuse holder tube.
By the very nature of its construction, this sealed solution
is subject to the internal overpressure caused by abnormal
overheating of the internal air. In this case, the trip device
can act as protection against overheating, thus preventing
damage to both the fuse and the fuse holder.
Figure 1.5.
Fuses compartment detail
Exterior cable connections (bushing)
The
cpg
.0 cubicles have bushings on the front for medium
voltage cable connection. These are made of epoxy resin
and can, thanks to their configuration, withstand the
current transformers. They are duly screened and designed
in line with Standard EN 50181, being of type “C”.
They allow the connection of conductors of up to 1500 kcmil
via screw-in T-type connectors of any manufacturer. The
cable compartment allows the installation of up to three
cables [3] per phase, with a symmetrical connector, or up to
four cables per phase, with an asymmetric connector.
Figure 1.6.
Cable compartment
IG-196-US version 03; 13/04/2021
7
General instructions
cpg
.0 NEW MODEL: Medium-voltage
metal-enclosed switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards
General description
Summary of Contents for cpg.0-c
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