ET 201i DC
0-5452
INSTALLATION
3-5
5. Earthing of the Work Piece
Where the work piece 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 work piece to earth may
reduce emissions in some, but not all instances. Care
should be taken to prevent the earthing of the work
piece increasing the risk of injury to users, or damage
to other electrical equipment. Where necessary, the
connection of the work piece to earth should be made
by direct connection to the work piece, but in some
countries where direct connection is not permitted, the
bonding should be achieved by suitable capacitance,
selected according to national regulations.
6. Screening and Shielding
Selective screening and shielding of other cables
and equipment in the surrounding area may alleviate
problems of interference. Screening the entire
welding installation may be considered for special
applications.
