Kaliburn SR-45i, User Manual

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Electromagnetic Compatibility (EMC) SR-45i User’s Manual
Plasma Cutting Cables
The plasma cutting cables should be kept as short as possible and should be
positioned close together, running at or close to the floor level.
Equipotential Bonding
Bonding of all metallic components in the plasma cutting installation and adjacent
to it should be considered. However, metallic components bonded to the
workpiece will increase the risk that the operator could receive a shock by
touching these metallic components and the electrode at the same time. The
operator should be insulated from all such bonded metallic components.
Earthing of the Workpiece
Where the workpiece is not bonded to earth for electrical safety, nor connected to
earth because of its size and position, e.g. ship’s hull or building steelwork, a
connection bonding the workpiece to earth may reduce emissions in some, but not
all instances. Care should be taken to prevent the earthing of the workpiece
increasing the risk of injury to users, or damage to other electrical equipment.
Where necessary, the connection of the workpiece to earth should be made by a
direct connection to the workpiece, but in some countries where direct connection
is not permitted, the bonding should be achieved by suitable capacitance, selected
according to national regulations.
Screening and Shielding
Selective screening and shielding of other cables and equipment in the
surrounding area may alleviate problems of interference. Screening of the entire
welding installation may be considered for special applications.
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