Patent ID: 6291783
Filing Date: 2001-09-18
Classification: H02B

Abstract:
An electrical switchgear apparatus, comprising:a fixed frame;a circuit breaker in the fixed frame, the circuit breaker comprising at least one pair of main contact means movable between a closed, electrical conducting position, and an open, breaking position;a plug-in and plug-out mechanism to reversibly move the circuit breaker between plugged-out and plugged-in positions;a first movable means to detect indexed positions and indexed position intervals of the plug-in and plug-out mechanism, the first movable means taking an active position in response to detection of the indexed position of the plug-in and plug-out mechanism;a second movable means to detect an indexed position of the pair of main contact means, the second movable means taking an active position when the pair of main contact means is in the indexed position; anda state indicating device comprising,an input terminal,a first output terminal,a first switch attached to the first movable means, the first switch comprising,a first switch input,a first switch first output, anda first switch switching means to connect the first switch inputs and outputs in a first position,the first position of the first switch only attainable when the first movable means is in the active position of the first movable means,a second switch attached to the second movable means, comprising,a second switch input,a second switch first output, anda second switch switching means to connect the second switch input and output in a first position of the second switch, when the second movable means is in the active position of the second movable means, andan electrical circuit to connect the first and second switches, and the input and first output terminals, the input and first output terminals connecting when the switching means of the first switch is in the first position of the first switching means and the switching means of the second switch is in the first position of the second switching means, each switching means connected to the corresponding detecting means by a kinematic connecting means, whereby when the detecting means is in the active position, the corresponding switching means is in the first position.