MECHANICAL INTERLOCK, DUAL POWER SUPPLY SWITCHING DEVICE, AND METHOD FOR OPERATING THE SAME

摘要

Embodiments of the disclosure provide a mechanical interlock, a dual power supply switching device, and a method for operating the dual power supply switching device. The mechanical interlock comprises: a first interlock lever coupled with a crank of a spindle of one power supply switch of the dual power supply switching device; a second interlock lever pivotally connected with the first interlock lever and also pivotally connected with a base of the dual power supply switching device, the second interlock lever being configured to rotate in a second direction opposite to the first direction in response to the movement of the first interlock lever; wherein a trip lever of the other power supply switch of the dual power supply switching device is configured to be in a rotation path of the second interlock lever and is configured to be abutted by the second interlock lever in the rotation path of the second interlock lever so as to keep the tripped state of the other power supply switch. The mechanical interlock, the dual power supply switching device and the method of operating the dual power supply switching device according to the disclosure can provide safe and reliable interlocking, and prevent safety accidents such as short circuit between power supplies or the like.