PLASMA-EROSION BREAKER Russian patent published in 1998 - IPC

FIELD: electrical engineering, commutation gears for switching on and over of pulse currents. SUBSTANCE: plasma-erosion breaker has vacuum chamber 1, source 6 of current connected to coaxial electrodes 2, bushing insulator 4, system of radially positioned plasma guns and dielectric obstacle 5 between plasma guns 3 and load 8. Breaker includes additional dielectric obstacle 7 located between plasma guns 3 and bushing insulator 4. Space between electrodes may filled completely or partially with insulator. EFFECT: improved operational safety and reliability. 1 cl, 2 dwg