Drive for a switch

Details Drive for a switch Drive for a switch

1985-11-26

1988-02-02

Shoop, Jr., William M.

Electricity: motive power systems

With flywheel or massive rotary member

318150, 307140, H02K 702

Patent

active

047230991

ABSTRACT:
A drive for a high-voltage isolating switch includes a shaft which acts on a moving contact of the isolating switch, a flywheel which is connected via a coupling to the shaft, a drive motor for energizing the flywheel before a switching process begins and a control circuit. The control circuit is used for determining the direction of rotation of the drive motor during the energizing process and for automatically switching the drive motor from a motor to a generator operation, during a period when the movable contact is to be moved. The motor is preferably a series-wound motor which provides high operational reliability. A rectifier is connected in the current path between the rotor and stator windings of the motor. The rectifier stabilizes the current direction in the stator winding during the switching-over phase of the drive motor from motor to generator operation.

REFERENCES:
patent: 4030007 (1977-06-01), Price
patent: 4086983 (1978-05-01), Anzai

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