Electronic sectionalizer and mounting structure for switchgear

Details Electronic sectionalizer and mounting structure for switchgear Electronic sectionalizer and mounting structure for switchgear

H - Electricity

02

H

306/65

H02H 7/22 (2006.01) H01H 31/32 (2006.01) H01H 39/00 (2006.01)

Patent

CA 1297931

ELECTRONIC SECTIONALIZER AND MOUNTING STRUCTURE FOR SWITCHGEAR Abstract of the Invention An electronic sectionalizer mechanism includes upper and lower contact mounting structure, and a sectionalizer tube carrying a logic circuit is telescopically received within the lower contact mounting structure. Once fault current conditions downstream of the sectionalizer mechanism are de- tected by the logic circuit, an actuator is fired and the tube drops in a longitudinal, non-lateral motion toward an isolated or open circuit position. In preferred embodiments of the invention, a pin of the actuator shifts along an axis parallel to the longitudinal axis of the tube so that immediate drop-out of the tube is assured. The sectionalizer mechanism requires comparatively little space for operating clearances and thus is especially adapted for use on a retrofit basis within the confines of an existing subsurface or pad-mounted switchgear cabinet; additionally, the sectionalizer mechanism may also be installed in existing overhead mounting structure for cutouts. (Docket No. 19747)

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