EMC device classification as per the rating plate or technical data.
EMC measures In certain cases, even though a device complies with the standard limit values for
emissions, it may affect the application area for which it was designed (e.g. when
there is sensitive equipment at the same location, or if the site where the device
is installed is close to either radio or television receivers).
If this is the case, then the operator is obliged to take appropriate action to recti-
fy the situation.
Check for possible problems, and check and evaluate neighbouring devices' res-
istance to interference according to national and international requirements:
-
Safety devices
-
Power, signal and data transfer lines
-
IT and telecommunications devices
-
Measuring and calibrating devices
Supporting measures for avoidance of EMC problems:
1.
Mains supply
-
If electromagnetic interference arises despite correct mains connection,
additional measures are necessary (e.g. use a suitable line filter).
2.
Control lines
-
must be kept as short as possible
-
must run close together (to avoid EMF problems)
-
must be kept well apart from other leads
3.
Equipotential bonding
4.
Shield, if necessary
-
Shield off other nearby devices
-
Shield off entire welding installation
EMF measures Electromagnetic fields may pose as yet unknown risks to health:
-
Effects on the health of persons in the vicinity, e.g. those with pacemakers
and hearing aids
-
Individuals with pacemakers must seek advice from their doctor before ap-
proaching the device or any welding that is in progress
-
For safety reasons, maintain as large a distance as possible between the
welding power-leads and the head/torso of the welder
-
Do not carry welding power-leads and hosepacks over the shoulders or wind
them around any part of the body
Safety measures
at the installa-
tion location and
during transport
A device toppling over could easily kill someone. Place the device horizontally on
a level, firm and solid surface and anchor it securely to prevent it toppling over.
Special regulations apply in rooms at risk of fire or explosion
-
Observe relevant national and international regulations.
Use internal directives and checks to ensure that the workplace environment is
always clean and clearly laid out.
When transporting the device, observe the relevant national and local guidelines
and accident prevention regulations. This applies especially to guidelines regard-
ing the risks arising during transport.
After transporting the device, it must be visually inspected for damage before
commissioning. Any damage must be repaired by trained service technicians be-
fore commissioning the device.
9
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