4.4.2. Cubicles with IAC internal arc classification up to 25 kA - 1 s
[8]
For other cable sections, please check with
Ormazabal
.
Feeder function, busbar rise and cable rise
Dimensions in mm.
Front and rear cable input or output (D1/D2).
Side cable input or output (D3/D4).
Figure 4.8.
Dimensions [mm] of the cable trench for
cgmcosmos
-l
,
cgmcosmos
-rb
and
cgmcosmos
-rc
[8]
Trench necessary for the feeder, busbar rise and cable rise ["L" or "T" Terminal 400/630 A]
Cable data
Approximate
radius of
curvature*
[mm]
Minimum depth
Cable insulation
Cable type
Cable
section
[mm
2
]
[12]
Cable
diameter
[mm]
D1
D3
Height
1300 mm
Dry insulation
Single-phase
150**
38
500
350
400
185
42
600
400
500
240
42
300
48
750
600
650
400
48
Three-phase
150
85
600
185
85
D2
D4
Height
1740 mm
Dry insulation
Single-phase
150
38
500
(T) 370
(F) 370
400
185
42
600
(T) 370
(F) 370
500
240
42
300
48
750
(T) 370
(F) 450
650
400
48
Three-phase
150
85
(T) 370
(F) 550
500
185
85
* Check against the data of the manufacturer of the cable used.
** Valid exclusively for functions with I
cc
21 kA 1 s.
(T) Rear cable input or output.
(F) Cable front input or output.
Table 4.6.
Trench necessary for the feeder, busbar rise and cable rise function
IG-078-EN version 12; 23/04/2020
25
General Instructions
cgmcosmos
: Medium-voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard
Installation
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