This paper describes a method to estimate the thermal lifetime of coil used in the dry-type molded transformer which is widely used in the domestic distribution system. In order to reduce the testing time. temperature accelerated aging test is planned...
This paper describes a method to estimate the thermal lifetime of coil used in the dry-type molded transformer which is widely used in the domestic distribution system. In order to reduce the testing time. temperature accelerated aging test is planned Finally, the thermal lifetime estimation method is composed of a temperature aging test and a cyclic test of temperature, humidity and lightning impulse voltage withstand test.