The invention relates to a
transformer bushing used in power industries. The
transformer bushing is composed of a connecting bar, a general cap, a joint, an oil pillow, a
bushing, a porcelain sleeve, a
flange, a shielding bushing, an insulating
barrel, a
voltage-sharing ball and a conducting tube, the shielding bushing is fixedly mounted on the
flange, the
voltage-sharing ball is arranged on the lower portion of the shielding bushing, the conducting tube is mounted in an inner cavity of the shielding bushing in an inserted manner, the bushing is mounted on the periphery of the conducting tube in a sleeved manner, the bushing is an insulating
capacitor provided with multiple leading-out taps, and the lower end of the porcelain sleeve is connected with the
flange. The multiple leading-out taps are arranged on the bushing and connected with a detecting device, so that detecting process can be more reliable; the taps are led out from an outermost-layer
electrode and a secondary outer-layer
electrode of the bushing respectively, and a low-power power source of with certain
voltage can be obtained between the two electrodes during equipment running, so that a power source is provided for the detecting device; connection between test taps and the flange is reliable and compact, so that performance testing is facilitated; and grounding seats are arranged in the test taps, so that grounding is facilitated integrally.