Power operator for switchgear with manual features

Details Power operator for switchgear with manual features Power operator for switchgear with manual features

1997-12-22

1999-04-20

Paladini, Albert W.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

361 5, 361 71, 361605, 340644, 200 5026, H02H 300

Patent

active

058959874

ABSTRACT:
A power operator for switchgear and the like is provided that is capable of either power or manual operation without the necessity of any decoupling or mode selection. The power operator is compact and easily affixed over a manual operating shaft of switchgear. The manual drive capabilities are always coupled for operation without any backdriving of the power source. The power operator includes a drive output affixed to the switchgear operating shaft, a manual operating shaft, and an arrangement for selectively coupling a power-driven input to the switchgear operating shaft. In a specific arrangement, the control arrangement of the power operator senses the position of the drive output and also senses the current drawn by the drive source. When controlling switchgear having a stored energy mechanism, operating positions are detected by sensing the tripping of the stored energy mechanism via the sensed current through the drive source.

REFERENCES:
patent: 3701101 (1972-10-01), Heiz et al.
patent: 4223365 (1980-09-01), Moran
patent: 4241373 (1980-12-01), Mara et al.
patent: 4562506 (1985-12-01), Moran
patent: 5025171 (1991-06-01), Fanta et al.
patent: 5434369 (1995-07-01), Tempco et al.

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