Electronic sectionalizer and mounting structure for switchgear

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

1987-10-20

1989-01-10

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific circuit breaker or control structure

361102, H02H 722

Patent

active

047977779

ABSTRACT:
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 detected 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 this 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.

REFERENCES:
patent: 1982986 (1934-12-01), Garlington
patent: 2080226 (1937-05-01), Paxton
patent: 2792529 (1957-05-01), Edwards
patent: 4153924 (1979-05-01), Moran
patent: 4553188 (1985-11-01), Aubrey et al.
patent: 4636764 (1987-01-01), Mee et al.
patent: 4670812 (1987-06-01), Doerfler et al.

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