Drawout circuit breaker with disconnect position interlock mechanism
AssigneeSiemens Aktiengesellschaft
InventorMarc Liebetruth
Life of this patent
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Abstract
An arrangement for controlling the movement of a drawout circuit-breaker, mounted in a switchgear, which can be moved in an operating position, test position and disconnect position relative to a drawout frame using an actuating shaft pivoted in the drawout frame and operated by a detachable actuating crank. A controllable closure member enables or prevents the actuating crank from coming into contact with the actuating shaft, and the drawout circuit-breaker can be removed from the drawout frame after a door is opened. Such arrangement is used in low-voltage circuit-breaker equipment.
Claims4
An arrangement for controlling the movement of a drawout circuit breaker, the drawout circuit breaker being removably mounted in an enclosure, the enclosure including a door and a drawout frame, the drawout circuit breaker being removable from the drawout frame when the door is in an open position, comprising:
- an actuating shaft for moving the circuit breaker to an operating position, a test position and a disconnect position, relative to the drawout frame;
- a detachable actuating crank for operating the actuating shaft;
- a controllable closure member for enabling the actuating crank to come into contact with the actuating shaft, and for preventing the actuating crank from coming into contact with the actuating shaft;
- a locking arrangement positioned in the drawout frame and interacting with the drawout circuit breaker, the locking arrangement for controlling the closure member;
- and
- a closing cylinder positioned in the door of the enclosure, the closing cylinder for preventing the drawout circuit breaker from being moved from the disconnect position, while allowing the drawout circuit-breaker to be removed from the drawout frame.
Dependencies are inferred from the claim text.