ESAB Cigweld EasyWeld 160, Руководство по эксплуатации

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EasyWeld / HandyWeld 160
INSTALLATION 3-2 0-5617
3.07 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 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).
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, signal-
ling and telephone cables; above, below and
adjacent to the welding equipment.
2. Radio and television transmitters and receiv-
ers.
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 measure-
ment.
7. The time of day that welding or other activities
are to be carried out.
8. The immunity of other equipment in the en-
vironment: 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 precau-
tions 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 equip-
ment 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 recommenda-
tions.
3. Welding Cables
The welding cables should be kept as short
as possible and should be positioned close
together, running at or close to the floor level.