Manitowoc Grove GMK 4100L-1, Operating Manual

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Rigging work
12.2 Choice of a suitable positioning site
Operating manual 3 302 690 en 12 - 17
GMK4100L-1
2
3
.1
1.
201
7
For example, according to DIN VDE 0105
.
For example as per ASME B 30.5 (USA)
•
Erect an obstacle at the minimum safe distance ( A ) from the overhead
power line. This will keep the equipment of the truck crane and load/lifting
tackle away from the power line. Make allowance for the possibility the
load or the cable may swing.
•
Cordon off the area around the truck crane at the safe distance ( A ).
This increases the safety area in case the power line is touched.
•
Have banksmen in visual or radio contact with you; check that you are
observing the safe distance (
A ).
•
If the load has to be guided, use only guide ropes of non-conductive
material.
If you do touch the overhead power cable:
•
Keep calm!
•
Do not leave the crane cab!
•
Tell anyone standing outside not to touch the truck crane, the load or the
lifting tackle.
•
Move the main boom out of the hazard area.
Voltage Safe distance (A)
Up to 1,000 V 1 m (3.3 ft)
over 1,000 V to 110,000 V 3 m (9.8 ft)
over 110,000 V up to 220,000 V 4 m (13.1 ft)
over 220,000 V up to 380,000 V 5 m (16.4 ft)
Voltage Safe distance (A)
up to 50,000 V 3.05 m (10 ft)
over 50,000 V up to 200,000 V 4.60 m (15 ft)
over 200,000 V up to 350,000 V 6.10 m (20 ft)
over 350,000 V up to 500,000 V 7.62 m (25 ft)
over 500,000 V up to 750,000 V 10.67 m (35 ft)
over 750,000 V up to 1,000,000 V 13.72 m (45 ft)