Description
28
REVISION 02 * DESCRIPTION SIMOSEC * 832-6063.0
1)
The rated continuous currents apply to ambient temperatures of 40 °C.
2)
Pressure values for SF
6
-insulated vessels.
3)
The fuse assembly is designed for a reference dimension "e" = 537 mm. With
reference dimension "e" = 442 mm, an extension tube (95 mm long) is required.
9.2
Tightening torques
If not stated otherwise, the following tightening torques apply to SIMOSEC switchgear:
Bus bar voltage metering switch panel types MS2, MS3
Rated voltage U
r
[kV]
8.25
15
27.6
Rated peak withstand current I
p
up to [kA]
peakl
52 65 52 65 52
Rated fault closing current, I
ma
kA(asym)
32 40 32 40 32
up to [kA]
peak
52 65 52 65 52
Metering panel type S, MT3, MC3, bus riser panel BR
Rated voltage U
r
[kV]
8.25
15
27.6
Rated continuous current I
r
1)
[A]
600, 1200
Joint:
material/material
Thread
Tightening torque
Metal joints:
steel/-steel
e. g.: front plates, top plates, etc.
M6 (self-cutting)
M8
9 lbf·ft (12 Nm)
16 lbf·ft (21 Nm)
Grounding bus bar:
steel/copper
copper/copper
steel/copper
M8
M8
M10
16 lbf·ft (21 Nm)
16 lbf·ft (21 Nm)
23 lbf·ft (30 Nm)
Current conductor joint:
copper/copper
copper/copper
M8
M10
16 lbf·ft (21 Nm)
23 lbf·ft (30 Nm)
Switchgear grounding:
steel/cable lug
M12
37 lbf·ft (50 Nm)*
Cable shield grounding
M10
23 lbf·ft (30 Nm)*
M12
(all other cable panels)
max. 37 lbf·ft (50 Nm)*
(all other cable panels)
*
The tightening torque at the cable lug joint depends on :
- material of cable lug
- instructions of termination manufacturer
- instructions of cable manufacturer
