Telescopic switch

Details Telescopic switch Telescopic switch

H - Electricity

01

H

H01H 1/00 (2006.01) H01H 31/32 (2006.01)

Patent

CA 2502806

A high voltage, high current telescopic disconnect switch suitable for use in isolated phase bus duct has two fixed conductors and a movable telescopic conductor coaxially disposed within the first fixed conductor and movable to a closed position bridging the first and second fixed conductors. A plurality of contact fingers are mounted to the fixed conductors and have contact surfaces that extend into engagement with the telescopic conductor to make electrical contact between the fixed conductors through the telescopic conductor when in a closed position. The contact surface of each of the fingers comprises a first tip portion that extends beyond the fixed conductor and has a first radius that is slightly greater than the radius of the telescopic conductor so that the first tip portion presents an arcuate width that overlies in wiping electrical contact the telescopic conductor when in the closed position.

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