Switch

Details Switch Switch

1993-07-22

1996-05-07

Scott, J. R.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Air-current blowout

218 30, 218 65, 218 63, H01H 3318

Patent

active

055148441

ABSTRACT:
A switch for use in electric power includes a fixed contact, a moving contact performing a switching operation with respect to the fixed contact, a cylinder working with the moving contact, a piston slidably provided in the cylinder, a buffer chamber which is surrounded by the cylinder and the piston, and is filled with an arc-extinguishing gas, and a second insulating nozzle mounted to an end of the cylinder on the side of the fixed contact, wherein the arc-extinguishing gas in the buffer chamber is sprayed through the nozzle on an arc generating between the fixed contact and the moving contact at an opening time of the moving contact.

REFERENCES:
patent: 3670126 (1972-06-01), Roidt
patent: 4032736 (1977-06-01), Ruffieux et al.
patent: 4052577 (1977-10-01), Votta
patent: 4101748 (1978-07-01), Meyer et al.
patent: 4160140 (1979-07-01), Rolff
patent: 4409447 (1983-10-01), Noeske
patent: 4475018 (1984-10-01), Arimoto et al.
patent: 4658108 (1987-04-01), Mauthe
patent: 4697055 (1987-09-01), Walter et al.
patent: 4786770 (1988-11-01), Hamano et al.
H. Sasao e al., "Development of a Magnet-Assisted Autopuffer GCB", IEEE 1990, 90 WM 158-6 PWRD, pp. 1-7.

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