REG 316*4 1MRB520049-Uen / Rev. C ABB Switzerland Ltd
7-5
Grounding a casing in a rack
The equipment is fitted with a grounding screw ( ) to which a
flexible copper braiding (at least 2 cm wide) must be connected.
A suitable tinned copper braided connection of the correct length
and fitted with lugs is available from ABB Switzerland Ltd
(Order No. 1MRB 400047).
Choose the shortest possible route to the nearest grounding
point on the cubicle frame or mounting plate, which must have a
direct connection to the station ground.
All metal surfaces used for the ground connections must be
protected against corrosion and be good electrical conductors,
i.e. no paint or non-conducting agents.
HEST 965 022 FL
*
**
*
Electrically
conducting
Electrically
conducting
Electrically
conducting
*
**
*
£ non-insulated connection
* braided copper (at least 3 cm wide)
** plant ground
Fig. 7.2 RF grounding for
semi-flush mounting
Fig. 7.3 RF grounding for
surface mounting
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