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8DJH • Installation and Operating Instructions • Version 11 • 500-8384.9
7.17.2 Earthing the non-extendable switchgear
1. Connect the earthing point of the non-extendable switchgear to the substation earth.
Fig. 95:
Earthing point (view from outside)
Fig. 96:
Earthing point
1
Earthing point (earthing bolt M12)
7.18 Interconnecting the earthing busbars
The units of the earthing busbar must be interconnected at the joints of the switchgear. The
earthing busbars are interconnected with a link. The link is pre-assembled on the earthing
busbar as standard.
Fig. 97:
Position of the earthing busbar
1
Earthing busbar
2
Link
Fig. 98:
Interconnecting the earthing busbars
1
Earthing busbar (left-hand panel)
2
Link
3
Bolted joint of the link (left-hand
panel)
4
Bolted joint of the link (right-hand
panel)
5
Earthing busbar (right-hand panel)
1. Remove the bolted joints
3
and
4
of the link.
2. Brush the oxidized copper surfaces of the earthing busbars
1
and
5
, and apply a thin film
of the supplied mounting paste.
Summary of Contents for 8DJH
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