Motorized shunt trip switch operator

Details Motorized shunt trip switch operator Motorized shunt trip switch operator

H - Electricity

01

H

306/83

H01H 3/26 (2006.01) H01H 3/30 (2006.01) H01H 3/34 (2006.01)

Patent

CA 1045662

MOTORIZED SHUNT TRIP SWITCH OPERATOR ABSTRACT OF THE DISCLOSURE A motor assembly for the switch operator mechanism of a high-current low-voltage bolted-pressure load-break switch; the switch operator mechanism includes spring drive means for rapidly driving the movable contact of the switch to its closed and opened positions, a main drive shaft, a drive linkage between the main drive shaft and the spring drive means, and trip means for actuating the spring drive means to open the switch. The motor assembly includes an electric motor, an operating shaft and a first transmission means including a mutilated ratchet element drivingly connecting the motor to the operating shaft. A second transmission means couples the operating shaft to the main drive shaft of the switch- operating mechanism for closing the switch. An electrical circuit is provided for automatically de-energizing the motor during switch closure. - 1 -

259207

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