Clarke 100EN Spécifications télécharger pdf (Page 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 welder 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.

2. METHODS OF REDUCING EMISSIONS

2.1 Mains supply

Welding equipment should be connected to the mains supply according to the

manufacturers recommendations. If interference occurs, it may be necessary to

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Clarke 100EN Spécifications Page 4