Linkage switch device, power converter, power line and equipment

The invention discloses a linkage switch device, a power converter, a power line and equipment. The power converter, the power line and the equipment all relate to the linkage switch device. The linkage switch device comprises a hydraulic device and a switch. The hydraulic device comprises a connecting pipe, a linkage bag and a driving bag. The two ends of the connecting pipe are respectively connected with the linkage bag and the driving bag so that the linkage bag and the driving bag are communicated through the connecting pipe. The connecting pipe, the linkage bag and the driving bag are fully filled with liquid. The linkage bag is connected with the switch. When the driving bag is pressed, the linkage bag expands through the conduction of the liquid in the connecting pipe and then theexpanded linkage bag pushes the switch to perform the switching action. The power converter and the equipment equipped with the linkage switch device can avoid standby power consumption so as to saveenergy consumption. 本发明公开了