A self cleaning type intank tapchanger contact design to retain stability of the contact resistance

摘要

The disclosure provides an on-load- tapchanger for a transformer comprising, at least one fixed contact and at least one movable contact (1), characterized in that: at least one predefined shaped slit (5) configured on head of the movable contact (1) to cut through or reduce formation of a resistive film and maintain stability of the tapchanger contacts. Fig. 2