Tucker GmbH,
Mail / Post:
Max-Eyth-Str.1, 35394 Gießen, Germany
Stud welding unit N800i
As of 24.08.2021
Manual part number: BE 1227
34
4.2.6
Connection of the workpiece
As standard, the earth ground cable is equipped with two earth ground terminals which
have to be connected to the workpiece.
When connecting the earth terminals attention must be paid to the following:
1.
The earth ground terminals must be connected directly to the workpiece or to the
workpiece fixture (welding bench, welding grid).
Steel constructions, tracks, pipelines, etc. may not be used as current conductors,
unless they are themselves the workpiece to be welded.
2.
The welding current circuit may not be earth grounded.
Exception: The workpiece itself or the workpiece fixture are earth grounded
compulsorily (pipelines, shipbuilding, etc.).
•
Place the earth ground terminals if possible at the same distance from the point
of welding when two ground clamps are used.
Note!
Prior to connecting the earth ground terminals the following advice on
avoi- ding any arc blowing must be observed!
4.3 Arc Blowing Effect
Blowing effect is the designation for the lateral deviation of the arc from a central
position. Depending on the cause, a distinction is made between the following
blowing effects.
Thermal blowing effect:
•
Deviation of the arc as a result of the expansion and turbulence of heated gases
in the combustion area of the arc.
Magnetic blowing effect:
•
Deviation of the arc as a result of the influence of magnetic or electromagnetic
fields.
The possibilities of reducing the thermal blowing effect are limited. They are
restricted to precise centering of the stud and chuck.
Содержание N800iTM
Страница 18: ......
