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Recommendations for assessment of the area (EN 60974-10)
Before installing the equipment the user shall make an assessment of potential electromagnetic problems in
the surrounding area, and shall take the following into account:
• Other supply cables, control cables, signalling and telephone cables; below and adjacent to the installation
• Radio and television transmitters and receivers
• Computer and other control equipment
• Safety devices, e.g. protections for industrial equipment
• Health of the people around, wearing pacemakers or hearing aids and other body implants
• Equipment for calibration and measuring
• Immunity of other equipment in the environment. The user shall ensure that other additional protection
measures in the environment are compatible
• Time of day that cutting has to be carried out.
The size of the observed surrounding area depends on the design of the building and other activities taking
place there. The range can extend over the property boundary.
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Recommendations of methods to minimize disturbances
If disturbances are detected it may be necessary to carry out further precautions, such as those:
• Filtering of the mains supply
• Shielding the mains cable of the permanently installed plasma cutting (safe contact is necessary between
shielding and housing)
• Regular maintenance of the plasma cutting installation
• All cover plates, service openings and flaps have to be closed before starting the unit
• No alternations on adjustments and settings should be done at the plasma unit whitout the acceptance of
the producer
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• Cutting cables should be kept as short as possible and closely together or take course close to the bottom
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• Potential equalization of all metallic components should be considered inside and adjacent to the
installation. The operator should be insulated from all metallic components.
• Earthing of the workpiece
• Selective screening of all other cables and equipment
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The operator has to follow national and local regulations! (for example in germany
Employer's Liability Insurance Association and in canada CAN/CSA-W117.2)
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Safety instructions
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