Specifications

4
ELECTROMAGNETIC INTERFERENCE (EMC)
Whilst this unit complies with EMC regulations, the user is responsible for
installing and using the welding equipment according to the manufacturers
instructions. If electromagnetic disturbances are detected then it shall be the
responsibility of the user of the welding equipment to resolve the situation. In
some cases this remedial action may be as simple as earthing the welding
circuit, see ‘Note’. In other cases it could involve constructing an
electromagnetic screen enclosing the power source and the work complete
with associated input filters. In all cases electromagnetic disturbances must be
reduced to the point where they are no longer troublesome.
NOTE: The welding circuit may or may not be earthed for safety
reasons. Changing the earthing arrangements should only be
authorised by a person who is competent to assess whether the
changes will increase the risk of injury, e.g. by allowing parallel
welding current return paths which may damage the earth
circuits of other equipment.
1. ASSESSMENT OF AREA
Before installing welding equipment the user shall make an assessment of
potential electromagnetic problems in the surrounding area. Avoid using your
inverter in the vicinity of:
a. other supply cables, control cables, signalling and telephone cables;
above, below and adjacent to the welding equipment;
b. radio and television transmitters and receivers;
c. computer and other control equipment;
d. safety critical equipment, e.g. guarding of industrial equipment;
e. pacemakers and hearing aids etc;
f. equipment used for calibration or measurement;
g. other equipment in the environment. The user shall ensure that other
equipment being used in the environment is compatible. This may require
additional protection measures;
It may be possible to avoid the above by changing the time of day that
welding or other activities are to be carried out.
The size of the surrounding area to be considered will depend on the structure
of the building and other activities that are taking place. The surrounding area
may extend beyond the boundaries of the premises.