IG-183-EN version 06; 31/03/2020
30
Installation
General instructions
cgm
.3 system: medium voltage SF
6
gas-insulated
cubicles up to 38 kV according to IEEE and CSA standards
Circuit breaker function with AV / RAV driving mechanism
D1
Frontal or rear cables incoming or outgoing
D2
Lateral cables incoming or outgoing
Figure 4.9.
Dimensions [mm] of the cable trench for
cgm
.3-v
with
AV / RAV driving mechanism
Necessary cable trench for circuit breaker with AV / RAV driving mechanism
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
< 150**
41
555
400
400
185
43
590
400
500
240
45.2
640
300
47.5
685
500
600
400
50.5
745
Three-core
18/30 kV
< 150
92.7
805
850
850
* Check with the cable used manufacturer’s data.
** 150 mm
2
cable only valid up to 21 kA.
Table 4.8.
Necessary cable trench for circuit breaker with AV / RAV driving mechanism