Gas-blast type circuit interrupter comprising electrostatic...

Details Gas-blast type circuit interrupter comprising electrostatic... Gas-blast type circuit interrupter comprising electrostatic...

H - Electricity

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H01H 33/74 (2006.01) H01H 33/24 (2006.01) H01H 33/98 (2006.01)

Patent

CA 1099319

CIRCUIT INTERRUPTER ABSTRACT OF THE DISCLOSURE A circuit interrupter comprising a pressure chamber, disposed in fluid communication with an arc extinguishing chamber containing an arc extinguishing fluid, for temporarily storing the arc extinguishing-fluid pressure-raised by the arc energy, the high pressure arc extinguishing fluid being puffed at an electric arc established between the separated contacts to extinguish it. The circuit interrupter further comprises means, for relaxing the electric field, disposed on one of the contacts and around an arcing region. The circuit interrupter is prevented from re-arcing due to the transient recovery-voltage after the arc current reaches the zero point, thereby ensuring a complete arc extinction in a short period of time.

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