Transformation method of lightning arrester outer leading type capacitive voltage transformer

The invention discloses a transformation method of a lightning arrester outer leading type capacitive voltage transformer. The lightning arrester and transformer wire connection in a capacitive voltage transformer oil tank is changed to be the outer wire connection mode, so that the following condition can be effectively avoided: when the lightning arrester, the transformer and the connection wires thereof are completely packaged in the capacitive voltage transformer and immerged into insulating oil by adopting a traditional structure mode, when the failure judgment process and the detect finding process are performed, tests only can be performed after a series of onerous processes including disassembling the capacitive voltage transformer and then disconnecting partial connection wires between the lightning arrester and the electromagnetic transformer and the like, so the working efficiency of test detection and failure judgment can be greatly improved, the transformer does not need to be disassembled, advan