Arc spinner with magnetically driven puffer

Details Arc spinner with magnetically driven puffer Arc spinner with magnetically driven puffer

1980-09-12

1983-10-18

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200147R, H01H 3388, H01H 3318

Patent

active

044107781

ABSTRACT:
An arc spinner interrupter is provided with a chamber above the coil which contains a piston of ferromagnetic material. The chamber communicates, through a channel through the center of the coil, with an arc extinguishing region. The arc extinguishing region contains the movable contact and cooperating arc runner disk of the arc interrupter. During arc interruption, the magnetic field produced by the coil causes the arc between the movable contact and arc runner to circulate in the usual manner in a relatively static gas-filled arc extinguishing volume. The magnetic field of the coil also produces an attractive force on the ferromagnetic puffer piston and causes compression of the gas-filled volume above the coil and causes the movement of cool gas through the channel into the arcing region. The movement of cool gas into the arcing region increases the density of the gas in the arcing region and cools the gas in the arcing region, thereby decreasing the possibility of a restrike and increasing the interrupting capacity of the device.

REFERENCES:
patent: 4052577 (1977-10-01), Votta
patent: 4249052 (1981-02-01), Votta et al.

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