Electromagnetic Compatibility (EMC)
ProLine 2200 User’s Manual REV N
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A-2
Assessment of Area
Before installing plasma cutting equipment, the user shall make an assessment of
potential electromagnetic problems in the surrounding area. The following shall
be taken into account:
a)
other supply cables, control cables, signaling and telephone cables; above,
below and adjacent to the plasma cutting 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)
the health of the people around, e.g. the use of pacemakers and hearing aids
f)
equipment used for calibration or measurement
g)
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
h)
the time of day that plasma cutting 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.
Methods of Reducing Emissions
Mains Supply
Plasma cutting 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 plasma
cutting equipment in metallic conduit or equivalent. Shielding should be
electrically continuous throughout its length. The shielding should be connected
to the plasma power source so that good electrical contact is maintained between
the conduit and the plasma power source enclosure.
Maintenance of the Plasma Cutting Equipment
The plasma cutting 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 plasma cutting equipment is in
operation. The plasma cutting 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 stabilizing devices
should be adjusted and maintained according to the manufacturer’s
recommendations.
