IG-183-EN version 06; 31/03/2020
29
General instructions
cgm.3 system: medium voltage SF
6
gas-insulated
cubicles up to 38 kV according to IEEE and CSA standards
Installation
Fuse protection function
D1
Frontal or rear cables incoming or outgoing
D2
Lateral cables incoming or outgoing
Figure 4.8. Dimensions [mm] of the cable trench for cgm.3-p
Necessary cable trench for fuse protection cubicle
Cable data Minimum depth
Cable
insulation
Cable type
Cable section
[mm
2
]
Cable
diameter
[mm]
Indicative
radius of
curvature*
[mm]
D1
[mm]
D2
[mm]
Dry insulation
One-core
18/30 kV
< 50 35 430 500 500
70 36.5 460
550 550
95 38 500
150 41 555 600 660
Three-core
18/30 kV
< 95 86 735 1050 1050
* Check with the cable used manufacturer’s data.
Table 4.7. Necessary cable trench for fuse protection cubicle
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