Operation
48
Working in the vicinity of overhead power lines
When working with the excavator in the vicinity of overhead power lines and tram lines, a minimum distance as
specified in the following table must be maintained between the excavator and its attachments and the power
line.
Rated voltage [V]
Safe distance [m]
up to 1 kV
1.0 m
over 1 kV
up to 110 kV
3.0 m
over 110 kV
up to 220 kV
4.0 m
over 220 kV
up to 380 kV or when rated voltage is unknown
5.0 m
If safe distances can not be maintained, the power lines must be switched off in coordination with their owner or
provider and secured against making them live again.
When approaching overhead power lines, any possible movements of the excavator must be taken into consid-
eration.
Unevenness of the ground or sloping the excavator can reduce the safe distance.
Wind can cause the overhead power lines to sway, thus reducing the safe distance.
In case of a power cross-over, leave the danger zone with the excavator, if possible, by taking suitable meas-
ures. If this is not possible, do not leave the operator's place, warn any approaching persons of the danger, and
have the power switched off.
Working in the vicinity of underground power lines
Before starting with excavation work, the owner of the excavator or the person responsible for the work must
check if there are any underground power lines in the proposed working area.
If there are underground power lines present, the position and routing of the power lines must be determined
together with the owners or operators and the required safety measures must be determined.
If power lines are encountered or accidentally damaged, the operator must stop working immediately and in-
form the responsible person.
