Appendix A Electromagnetic Compatibility (Emc) - Lincoln Electric FineLine 300HD Operator's Manual

BK8053-000107 Rev D

Appendix A Electromagnetic Compatibility (EMC)

A.1 Background
CE marked Systems are manufactured to comply with the European standard EN
60974-10 (Electromagnetic compatibility (EMC) – Product standard for arc welding
equipment). These have been tested in accordance with CISPR 11, EMC
classification – Group 2 ISM (Class A). The limits used in this standard are based on
practical experience. However, the ability of plasma cutting equipment to work in a
compatible manner with other radio and electronic systems is greatly influenced by
the manner in which it is installed and used. For this reason, it is important that the
plasma cutting equipment be installed and used in accordance with the information
below if electromagnetic compatibility is to be achieved.
Plasma cutting equipment is primarily intended for use in an industrial environment.
There may be potential difficulties in ensuring electromagnetic compatibility in other
environments.
A.2 Installation and Use
The user is responsible for installing and using the plasma cutting equipment
according to the manufacturer's instructions. If electromagnetic disturbances are
detected then it shall be the responsibility of the user of the plasma cutting
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 plasma cutting
circuit (refer to the Note below). In other cases it could involve constructing an
electromagnetic screen enclosing the plasma 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 plasma cutting circuit may or may not be earthed for safety reasons.
Changing the earthing arrangements should only be authorized by a person who is
competent to assess whether the changes will increase the risk of injury, e.g. by
allowing parallel plasma cutting 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.
This information is subject to the controls of the Export Administration Regulations [EAR]. This information shall not be provided to
non-U.S. persons or transferred by any means to any location outside the United States contrary to the requirements of the EAR.
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