English to Polish Tech/Engineering Metallurgy / Casting spawalnictwo/welding

instrukcja spawania TIG:
Normal open-circuit voltage is not
present before tungsten electrode
touches workpiece; only a low
sensing voltage is present between
electrode and workpiece. The
solid-state output contactor does
not energize until after electrode is
touching workpiece. This allows
electrode to touch workpiece without
overheating, sticking, or getting
contaminated.