Evaluation and Performance Test of Ball and Socet type Suspension Insulator for 300 kN Ultra High Voltage

300kN 초고압용 초고압용 볼소켓형 현수애자의 성능평가

As the results of evaluation of its performance for 300 kN Ball and Socket type suspension insulators. There was electrically internal puncture of the solid insulating body of the insulating due to the steep front impulse voltage, which usually occurs puncture before external flash-over of insulators, moreover we have obtained satisfactory results in power arc test of 7.2kA cycle fatigue test with high qualify control index of 4.6, especially we have obtained more satisfactory results than that before improvement of its materials.