| 摘要 |
Miniaturized modular high voltage truck mounted switchgear in which circuit interrupter elements on a frame are movable with respect to a truck frame and the truck frame is itself removably mounted in a cubicle in a switchboard. The circuit interrupter elements may then be racked into a connected position with respect to busses in the switchboard and may also be racked out. The circuit interrupter elements, when racked out, telescope with the operating elements of the truck mounted frame; the connection between the operating elements of the truck mounted frame and the circuit interrupter elements includes a link which is pivotally mounted on a driving member carried by the truck and hingedly connected to the circuit breaker elements. This link may swing into the region of the operating members mounted on the truck and may swing away therefrom, to permit the telescoping of the frame which carries the circuit interrupter elements into the truck frame. Racking mechanism is provided which will move the frame carrying the circuit interrupter elements with respect to the truck. The racking mechanism may be motor driven or manually driven and is mounted on the truck frame. Interlocks are provided between the truck frame and the cubicle in the switchboard not only to anchor the truck frame in the switchboard but to ensure that racking out will occur only under an open condition of the interrupter breakers and that auxiliary contacts will be disengaged before any removal of the truck.
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