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Fitting the earthing device
Mandatory inspection of the earthing accessories
To ensure safe operation of the earthing device and the earthing rod, inspect them diligently before each
application.
Perform a visual check of the earthing device and the earthing rod.
Especially, check the copper wires and the wire wrappings for noticeable brown coloration
and inflexibility resulting from high currents.
Fig. 327: Copper wires without coloration
Perform a manual check of the earthing device and the earthing rod.
Especially, check if all bolted joints at the earthing tulips are firmly tightened.
If a check shows tangible problems:
Do not use these earthing accessories.
Contact the local superior and responsible person.
Inspection of the earthing accessories is successfully executed.
22.2 Connecting the earthing device
194
DANGER
Electric shock
Put on personal protective equipment.
Observe the correct order of action:
Attach the earthing clamp to the earthing point of the panel before
opening a shutter.
Fig. 328: Copper wires with
brown coloration
NXAIR M
139-2021.9 / 07
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