DEVICE FOR DETECTING PARTIAL DISCHARGE FOR POWER TRANSFORMER

摘要

The present invention relates to a device for detecting a partial discharge for a power transformer which detects an electromagnetic signal occurring due to faulty insulation. The device includes an antenna unit receiving electromagnetic waves an insulator including the antenna unit a metallic air tight unit that seals a connector connected to the insulator and connecting a coaxial cable and the coaxial cable exposed to the outside of the metallic air tight unit. Thus it is possible to enhance broadband properties through an internal conductor of a drain valve.