Magnetic enhanced arc extinguisher for switching assemblies havi

Details Magnetic enhanced arc extinguisher for switching assemblies havi Magnetic enhanced arc extinguisher for switching assemblies havi

1999-06-25

2000-05-16

Scott, J. R.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Magnetic blowout

218 26, 218 38, 335201, H01H 930, H01H 3304

Patent

active

060640243

ABSTRACT:
A DC contactor has stationary and movable contacts. A magnet is rotatably mounted adjacent to the stationary contact within a self magnetic field produced by the flow of electric current in the stationary contact. The magnet rotates so that its magnetic field extends around the stationary contact in the same direction as the self magnetic field. When an arc forms between the stationary and movable contacts, interaction with the self magnetic field and the magnetic field drives the arc toward an adjacent extinguishing chamber.

REFERENCES:
patent: 3976962 (1976-08-01), Seeley
patent: 4424428 (1984-01-01), Bernard et al.
patent: 5763847 (1998-06-01), Moldovan et al.

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