| 主权项 |
1. A power electronic device comprising:
a power unit; and a mounting cubicle matching with the power unit, which has a rail and an entrance for pushing the power unit into the mounting cubicle and pulling the power unit out of the mounting cubicle, wherein a side of the mounting cubicle away from the entrance is provided with a power source and control output terminal and a signal output terminal, a side of the power unit facing the power source and control output terminal and the signal output terminal is provided with a power source and control input terminal and a signal input terminal, and the power unit is provided with a micro-switch, a distance between the signal output terminal and the signal input terminal is larger than a distance between the power source and control output terminal and the power source and control input terminal, when the power unit is required to be pushing into the mounting cubicle, the power unit moves along the rail, after the power source and control input terminal of the power unit contacts with the power source and control output terminal and forms electrical connection, as the power unit is pushed continuously, the signal input terminal of the power unit becomes electrically connected with the signal output terminal, and the micro-switch is turned on so as to start the power unit, when the operating power unit is required to be pulled out of the mounting cubicle, the micro-switch is turned off so as to stop the power unit, and the power unit moves toward the entrance along the rail, the power unit is first disconnected with the signal output terminal and then the power unit is disconnected with the power source and control output terminal. |
