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GENERAL INSTRUCTIONS FOR
CMS-17
SWITCHING AND BREAKING SUBSTATION
IG-178-GB
version 01
11.08.2011
3.6. MV CABLE ACCESS
The
CMS-17
Switching and Breaking Substation has 4 holes of 174 mm in diameter at the
bottom part. Additionally it has 2 exits, one on either side, which allow access to adjoining
plots.
The bottom holes allow to lay cables at distances of less than 900 mm from level 0, even
underneath the enclosure itself.
To open a hole, simply knock it inwards with a hammer. Then clean the pieces of concrete
from inside the enclosure.
The MV cables must meet the minimum radius of curvature indicated by the cable
manufacturer, with the aim of having a sufficient length of cable inside the enclosure so as to
enable a comfortable arrangement and handling of terminals
[2]
.
Once the MV connections have been performed, proceed with the sealing of the cable holes.
[2]
See section 3.7
MV Terminal Connection.
Figure 3.2: Side access to CMS-17
Figure 3.3: Bottom access to CMS-17