Bohler URANOS 1500 RC Instruction Manual page 19

1.7 Electromagnetic fields & interferences
• The welding current passing through the internal and external
system cables creates an electromagnetic field in the proxim-
ity of the welding cables and the system itself.
• Electromagnetic fields can affect the health of people who
are exposed to them for a long time (the exact effects are still
unknown).
Electromagnetic fields can interfere with some equipment like
peacemakers or hearing aids.
Persons fitted with pacemakers must consult their
doctor before undertaking arc welding or plasma
cut operations.
EMC equipment classification in accordance with EN/IEC
60974-10 (See rating plate or technical data)
Class B equipment complies with electromagnetic compatibility
requirements in industrial and residential environments, includ-
ing residential locations where the electrical power is provided
by the public low-voltage supply system.
Class A equipment is not intended for use in residential locations
where the electrical power is provided by the public low-voltage
supply system. There may be potential difficulties in ensuring
electromagnetic compatibility of class A equipment in those
locations, due to conducted as well as radiated disturbances.
Installation, use and area examination
Questo apparecchio è costruito in conformità alle indicazioni
contenute nella norma armonizzata EN60974-10 ed è identifi-
cato come di "CLASSE A".
Questo apparecchio deve essere usato solo a scopo profession-
ale in un ambiente industriale.
Il costruttore non risponderà di danni provocati dall'uso
dell'impianto in ambienti domestici.
The user must be an expert in the sector and as
such is responsible for installation and use of the
equipment according to the manufacturer's instruc-
tions.
lf any electromagnetic disturbance is noticed, the
user must soave the problem, if necessary with the manufac-
turer's technical assistance.
In any case electromagnetic disturbances must be
reduced until they are not a nuisance any longer.
Before installing this apparatus, the user must evalu-
ate the potential electromagnetic problems that
may arise in the surrounding area, considering in
particular the health conditions of the persons in
the vicinity, for example of persons fitted with pace-
makers or hearing aids.
Mains power supply requirements (See technical data)
High power equipment may, due to the primary current drawn
form the mains supply, influence the power quality of the grid.
Therefore connection restrictions or requirements regarding the
maximum permissible mains impedance (Zmax) or the required
minimum supply capacity (Ssc) at he interface point to the pub-
lic grid (point of common coupling, PCC) may apply for some
types of equipment (see technical data).
In this case it is the responsibility of the installer or user of the
equipment to ensure, by consultation with the distribution
network operator if necessary, that the equipment may be con-
nected.
In case of interference, it may be necessary to take further pre-
cautions like the filtering of the mains power supply.
lt is also necessary to consider the possibility of shielding the
power supply cable.
Welding cables
To minimise the effects of electromagnetic fields follow the fol-
lowing instructions:
- Where possible, roll and secure the earth and power cables
together.
- Avoid rolling the welding cables around your body.
- Avoid standing in between the earth and power cables (keep
both on the same side).
- The cables must be kept as short as possible, positioned near
one another and laid at or approximately at ground level.
- Position the system at some distance from the welding area.
- The cables must be far from any other cables.
Equipotential connection
The earth connection of all the metal component in the welding
installation and near it must be taken in consideration.
The equipotential connection must be made according to the
national regulations.
Earthing the workpiece
When the workpiece is not earthed for electrical safety reasons
or due to its size and position, the earthing of the workpiece
may reduce the emissione. It is important to remember that
the earthing of the workpiece should neither increase the risk
of accidents for the operators, nor damage other electric equip-
ment.
The earthing must be made according to the national regulations.
Shielding
The selective shielding of other cables and equipment present
in the surrounding area may reduce the problems due to inter-
ference. The shielding of the entire welding installation can be
taken in consideration for special applications.
1.8 IP Protection rating
S
IP23S
- Casing protected against access to dangerous parts with fin-
gers and against solid foreign bodies with diameter greater
than/equal to 12.5 mm
- Casing protected against rain failing at 60°on the vertical
line.
- Casing protected against harmful effects of water seeping in
when the moving parts of the equipment are not operating.
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