Specifications

Transtig 200Pi, 250Pi, 300Pi

2. Electromagnetic Compatibility

WARNING 2

Extra precautions for Electromagnetic Compatibility may be required when this Welding Power Source is

used in a domestic situation.

2.1 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 1. 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 1

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. Further guidance is given in IEC 974-13 Arc Welding Equipment - Installation and use

(under preparation).

2.2 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

i) Other supply cables, control cables, signalling and telephone cables; above, below

and adjacent to the welding equipment.

ii) Radio and television transmitters and receivers.

iii) Computer and other control equipment.

iv) Safety critical equipment, e.g. guarding of industrial equipment.

v) The health of people around, e.g. the use of pacemakers and hearing aids.

vi) Equipment used for calibration and measurement.

vii) The time of day that welding or other activities are to be carried out.

viii) 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.