Patent ID: 9124087
Filing Date: 2015-09-01
Classification: H02H

Abstract:
1. An arc suppression circuit for reducing arc at a contact, comprising: an inductor; a first switch having switch contacts being movable between a first position and a second position; said first switch connected in series with said inductor; a second switch having switch contacts being movable between a first position and a second position; said second switch connected in parallel with said inductor; a shunt circuit connected across said second switch for shunting said switch contacts of said second switch; a trigger circuit for sensing voltage across said inductor for actuating said shunt circuit when voltage across said inductor exceeds a predetermined level to reduce arcing current at said switch; and a timing circuit comprising an integrator connected to a window comparator for delaying the closing of one of said first and second switches for a period after the opening of the other of said first and second switches.