CIGWELD Transmig 355i Operating Manual Download

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OPERATING MANUAL

INSTALLATION

3-2

Manual 0-5586

3.05 Electromagnetic Compatibility

WARNING

Extra precautions for Electromagnetic Compat-
ibility may be required when this Welding Power
Source is used in a domestic situation.

A. Installation and Use - Users Responsibility

The user is responsible for installing and
using the welding equipment according to the
manufacturer’s instructions. If electromagnetic
disturbances are detected then it shall be the
responsibility of the user of the welding equipment
to resolve the situation with the technical
assistance of the manufacturer. In some cases this
remedial action may be as simple as earthing the
welding circuit, see NOTE below. In other cases
it could involve constructing an electromagnetic
screen enclosing the Welding Power Source and
the work, complete with associated input filters.
In all cases, electromagnetic disturbances shall
be reduced to the point where they are no longer
troublesome.

NOTE!

The welding circuit may or may nor 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. Further guidance is given in IEC
60974-13 Arc Welding Equipment - Installation
and use (under preparation).

B. Assessment of Area

Before installing welding equipment, the user shall
make an assessment of potential electromagnetic
problems in the surrounding area. The following
shall be taken into account

1. Other supply cables, control cables, signalling

and telephone cables; above, below and
adjacent to the welding equipment.

2. Radio and television transmitters and

receivers.

3. Computer and other control equipment.

4. Safety critical equipment, e.g. guarding of

industrial equipment.

5. The health of people around, e.g. the use of

pacemakers and hearing aids.

6. Equipment used for calibration and

measurement.

7. The time of day that welding or other activities

are to be carried out.

8. The immunity of 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.

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.

C. Methods of Reducing Electromagnetic Emissions

1. Mains Supply

Welding equipment should be connected to the
mains supply according to the manufacturer’s
recommendations. If interference occurs,
it may be necessary to take additional
precautions such as filtering of the mains
supply. Consideration should be given to
shielding the supply cable of permanently
installed welding equipment in metallic
conduit or equivalent. Shielding should be
electrically continuous throughout it’s length.
The shielding should be connected to the
Welding Power Source so that good electrical
contact is maintained between the conduit and
the Welding Power Source enclosure.

2. Maintenance of Welding Equipment

The welding equipment should be routinely
maintained according to the manufacturer’s
recommendations. All access and service
doors and covers should be closed and
properly fastened when the welding
equipment is in operation. The welding
equipment should not be modified in any way
except for those changes and adjustments
covered in the manufacturer’s instructions. In
particular, the spark gaps of arc striking and
stabilising devices should be adjusted and
maintained according to the manufacturer’s
recommendations.