110-0134.9 / 13 NXAIR / ≤ 40 kA 273
Earthing and de-earthing the busbar system
21 Earthing and de-earthing the busbar system
Read and understand these instructions before attempting operating works.
21.1 Earthing the busbar system manually
Arrangement of control elements
The operating mechanism of the earthing switch provided for earthing the busbar system is located in the
front upper area of the low-voltage compartment.
Fig. 497: Control elements of earthing switch
for busbar system
Risk of falling
Falling from a ladder can lead to injuries and bone fractures.
Observe the guidelines for the use of working materials.
Use approved electrician's ladders only.
Observe the manual and the instructions on the ladder.
Maloperation
A switching operation once started must be completed totally! A switching
operation that was not completed cannot be turned back.
Do not try to remove the operating lever at intermediate positions.
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