Patent ID: 8330063

Claim:
An external hanging combined vacuum on-load tap switch, comprising: a case, a tap selector, a switching means assembly, and a transmission device, wherein one lateral side wall of the case is provided with a connecting terminal that is able to connect to a coil tap of a transformer, the lateral side wall having an external side; the external side of the wall is provided with a first flange plate which is able to connect to a second flange plate contained in the transformer; the tap selector and the switching means assembly are arranged inside the case in parallel; the transmission device is able to connect to an electric operation mechanism, driving the tap selector and the switching means assembly to achieve tapping and switching; the transmission device is arranged inside the case, the transmission device having a power input end and a power output end; the power input end of the transmission device is able to connect to an electric operation mechanism positioned outside the case; and the transmission device comprises a combined Geneva mechanism which drives the tap selector to achieve tapping, a straight-line quick moving mechanism which drives the switching means assembly to achieve switching, and a mechanical transmission mechanism which connects the tap selector with the switching means assembly; the power output end of the mechanical transmission mechanism is connected with the straight-line quick moving mechanism; and the switching means assembly is linked with the tap selector through the straight-line quick moving mechanism.