Manitowoc Grove GMK 5250L Operating Instructions Manual page 723

Operating Instructions GMK5250L
For example, according to DIN VDE 0105
.
Voltage
up to 1,000 V
over 1,000 V to 110,000 V
over 110,000 V to 220,000 V
over 220,000 V to 380,000 V
For example as per ASME B 30.5 (USA)
Voltage
up to 50,000 V
from 50,000 V to 200,000 V
over 200,000 V to 350,000 V
over 350,000 V to 500,000 V
over 500,000 V to 750,000 V
over 750,000 V to 1,000,000V
•
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!
3 302 633 en
11.2 Selecting the suitable site
Safe distance (A)
1 m (3.3 ft)
3 m (9.8 ft)
4 m (13.1 ft)
5 m (16.4 ft)
Safe distance (A)
3.05 m (10 ft)
4.60 m (15 ft)
6.10 m (20 ft)
7.62 m (25 ft)
10.67 m (35 ft)
13.72 m (45 ft)
Rigging work
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