04/2014
Operating Manual E4-2800/4200/5200 / M4-3000/4000/5500
Page 7
Procedure to reduce emissions
•
Mains supply:
Installation of additional mains filters, screening of mains supply lead.
•
Housing:
All cover plates must be completely assembled.
•
Welding cables:
Should be as short as possible and should run close together on or near to the
floor.
•
Potential equalization:
The electric connection of all metal parts in and near a welding machine should be
taken into account.
•
Earth connection of workpiece:
If the workpiece is not put to earth for reasons of electrical safety or because of its
size and position (e.g. shipbuilding), a connection of the workpiece may reduce
emissions in certain cases. It must be ensured, however, that earthing of the
workpiece does not increase the risk of accident to the user or causes damage to
other electrical equipment. In this case, connection can be effected by means of
capacitors.
•
Screening:
Selective screening of other cables and equipment in the vicinity may reduce
electrical interference. Screening of the complete welding equipment may be
considered in special situations.
