Cable Box; Cable Testing - ABB SafeLink Installation And Operating Instructions Manual

SafeLink
abb
SF Insulated Ring Main Unit
6
Installation and Operating Instructions

2.5 Cable Box

The cable box has been designed to ensure that arc faults are contained. This is achieved
using a double skin design on the side and front panels.
To gain access to the cable box the respective switch must first be in the earth position
and the selector switch in the blocked position. This allows the cable box cover to be
lifted off. This action also engages an interlock to prevent the switch being closed while
the cover is removed.
When refitting the cable box covers ensure that the cover is pushed fully down onto the
locating pins.

2.6 Cable Testing

Cable testing first requires that the cable box cover be removed as described above. The
switch can be taken out of the earth position to the off position. To allow test
connections to be made to the cable, the termination boots must be slid down to reveal
the test points on the bushing stems above the terminations.
Once the cable box cover is removed, the switch cannot be turned to the on position.
The switch must be returned to the earth position before the cover is refitted. The cover
catch locks automatically once the switch is taken out of the earth position.
Cable testing should be carried out in accordance with the
cable manufacturer's recommended practice.
It is important that the terminations be done in the manner
outlined in section 5.3 on page 14.
SLMIO ver 2.12 ABB Ltd, Switchgear Division, Auckland, New Zealand 11