Connecting The Earthing Device - Siemens NXAIR Operating Instructions Manual

Mandatory inspection of the earthing device 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. 673: 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 noticeable problems:
Do not use these earthing device accessories.
Contact the locally superior and responsible person.
✓
Inspection of the earthing device accessories is successfully executed.

26.2 Connecting the earthing device

110-0134.9 / 14
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.
NXAIR / ≤ 40 kA
Fitting the earthing device
Fig. 674: Copper wires with brown coloration
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