MERKLE MobiARC 280 cel, Руководство по эксплуатации

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Safety instructions
8
c) Welding cables
Welding cables should be kept as short as possible and routed close together on or near
the floor.
b) Equipotential
It is available to interconnect all metallic parts in and next to the welding equipment.
Metallic parts connected to the workpiece can, however, increase the risk of the welder
receiving an electric shock by touching these metallic parts and the electrode
simultaneously. The welder must be electrically insulated against all these connected
metallic parts.
c) Grounding the workpiece
If the workpiece is not connected to the ground for electrical safety reasons, or due to
the size and position of the workpiece, e.g. steel structure or outer wall of a ship,
grounding the workpiece may in some cases, but not all, reduce emitted interference. It
must be ensured that grounding the workpiece will not increase the risk of accidents for
the user and cannot cause the destruction of other electrical equipment. If necessary,
the grounding of the workpiece must be carried out by means of a direct connection to
the workpiece. In countries where a direct connection is prohibited, the connection must
be made by means of suitable reactors, selected in accordance with national regulations.
d) Shielding
Selective shielding of other cables and devices in the vicinity can reduce interference
problems. For special applications, it may be worth considering shielding the entire
welding system.