Vacuum cartridge, notably for a medium voltage electrical cicuit

Details Vacuum cartridge, notably for a medium voltage electrical cicuit Vacuum cartridge, notably for a medium voltage electrical cicuit

1995-06-06

1997-01-07

Scott, J. R.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Air-current blowout

218 3, 218 10, 218123, 218142, H01H 3366, H01H 3304

Patent

active

055919480

ABSTRACT:
A vacuum cartridge for a medium voltage electrical switch, as well as a switch incorporating such a cartridge comprising an enclosure closed by two end-plates in which there are housed three contacts extending axially. Two of these contacts are stationary and comprise a disk-shaped contact part and are securely fixed respectively to the two end-plates, whereas the third contact is formed by a rod slidably mounted in the second stationary contact, the rod being brought into contact with the first stationary contact during a period sufficient to generate an electrical arc between the two stationary contacts in order to perform breaking of an electrical circuit. A switch comprises an enclosure filled with sulphur hexafluoride including a cartridge as previously described, two main contacts electrically connected in parallel to the stationary contacts and an operating mechanism connected to selected aformentioned contacts.

REFERENCES:
patent: 3210505 (1965-10-01), Porter
patent: 3211866 (1965-10-01), Crouch et al.
patent: 4171474 (1979-10-01), Holmes
patent: 5155315 (1992-10-01), Malkin
patent: 5239149 (1993-08-01), Malkin et al.
patent: 5280144 (1994-01-01), Bolongeat-Mobleu et al.
patent: 5347096 (1994-08-01), Bolongeat-Mobleu et al.

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