Soyer BMS-9 Operating Instructions Manual page 37

Arc blow effect
Blow effect due to earth connection or workpiece geometry
Blow effect
Operating instructions Soyer Bolzenschweißtechnik
Explanation
Symmetrical earth connection
Ideal condition, stud is located in the centre of the
two earth connections.
Asymmetrical earth connection
The arc is deflected to the side where there is a lower
current density.
Workpiece geometry
Additional workpiece masses disturb the arc
symmetry.
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