TL260
Safety
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03_Safety_en.fm - V 0.1 - 14.4.11
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3.15 Working in the vicinity of overhead power lines
If the machine is being used in the vicinity of overhead power lines and trolley
wires, a safety distance which varies depending on the nominal voltage of the
overhead line must be maintained between the lines and the machine and its
work equipment, to prevent current overspill. This also applies to the distance
between these lines and attached implements or loads.
Specified safety
distance
The safety distance depends on the rated voltage of the overhead power line.
Tab. 3-1 Prescribed safety distances
Also consider all working movements of the machine, e. g. positions of the
work equipment and the dimensions of attached loads.
Consider also uneven ground which could cause a slanted position of the
machine and thus bring it closer to the overhead power line.
During work in windy conditions, both overhead lines and work equipment
may swing out, thus reducing the safety distance.
If it is impossible to maintain sufficient distance from overhead power lines and
trolley wires, the plant operator must consult with the proprietor or operator of
the overhead lines to find other safety precautions to prevent current overspill.
Such measures could be, e. g.
• Switching off the current
• Re-routing the overhead line
•Wiring
• Limitation of the working range of the machine.
Nominal voltage Safety distance
> 1,000 V 1.0 m
more than 1 kV > 110 kV 3.0 m
more than 110 kV > 220 kV 4.0 m
more than 220 kV > 1,380 kV 5.0 m
nominal voltage unknown 5.0 m
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