Secheron UR46-81S, Instruction Manual

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Document number: SG104148TEN Revision: B01 Issue date: 20.8.2012
Copyright© 2012 Sécheron SA - This document is not contractual and contains information corresponding to the level of technology at the date of release.
File: c-UR46-8S_inst_en.fm
C-25
UR46-81/82S Installation
C.12 High voltage connections
The power connections may be made by cables or bars.
a) Clean the surface of the main connections (1).
b) Connect the bars (2) or the cables (3) using four M12 bolts (4) onto each main terminal (1).
Tighten the bolts (4) to a torque of 50-67 Nm.
04613
Note! According to EN-50123 for this range of current, the recommended current density is 1 A/mm
2
for copper bars and 1.3 A/mm
2
for copper cables.
C.12.1 Recommended dimensions of the bars/cables
02764
According to EN-50123 for this range of current, the recommended current density is 1 A/mm
2
for copper bars and 1.3 A/mm
2
for copper cables.
4
4
1
1
3
3
1
2
Important!
When connecting with bars, avoid creating mechanical stresses in the connections
(1) by installing the first bar support (2) not farther than 400 mm from the connec-
tions (1).
400 mm