Arc burns at loose ground connections prevented. Protective grounding scheme for arc-welding power supply includes four ground leads to workpiece and circuit that automatically turns off welding current if one or two ground leads becomes disconnected. Prevents burns and inadvertent welding occuring where full welding current passes through single loose ground contact.
Redundant Grounding Circuit For Arc Welding
NASA Tech Briefs ; 12 , 9
1988-10-01
Miscellaneous
No indication
English