Stray Welding Currents; Emc Device Classifications; Emc Measures - Fronius Artis 170 Operating Instructions Manual

When working at elevated heights, wear a safety harness to prevent falls.
Before working on the device, switch off the device and remove the mains plug.
Secure the device to prevent the mains plug from being connected and switched
on again by applying a clearly legible and understandable warning sign.
After opening the device:
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If work is needed on voltage-carrying parts, bring in a second person who will
switch off the main switch at the correct time.
Stray welding
If the following instructions are not observed, stray welding currents may occur,
currents which pose a risk of the following:
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Ensure that the workpiece clamp is securely connected to the workpiece.
Secure the workpiece clamp as close to the spot to be welded as possible.
Position the device with sufficient insulation against electrically conductive envir-
onments, e.g., insulation against electrically conductive floors or electrically con-
ductive mounts.
Observe the following when using power distribution boards, twin-head mounts,
etc.: Even the electrode of the welding torch/electrode holder not in use carries
electric potential. Ensure that there is sufficient insulation when the unused
welding torch/electrode holder is stored.
In automated MIG/MAG applications, only guide the wire electrode from the
welding wire drum, large spool, or wirespool to the wirefeeder with insulation.
EMC Device Devices in emission class A:
Classifications -
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Devices in emission class B:
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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 operating company is obliged to take appropriate ac-
tion to rectify the situation.
Discharge all electrically charged components
Ensure that all components are disconnected from the power supply
Fire
Overheating of parts connected to the workpiece
Irreparable damage to ground conductors
Damage to the device and other electrical equipment
Are only designed for use in industrial settings
Can cause line-bound and radiated interference in other areas
Satisfy the emissions criteria for residential and industrial areas. This is also
true for residential areas in which the energy is supplied from the public low-
voltage grid.
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