The exploration characteristic of long flashover arrestor (LFA) with different ring’s breadth by using 1.2/50 microsecond positive and negative impulse voltage

Abstract

This paper presents the estimation and comparison characteristics of long flashover arrestor (LFA) by varying the breadth of ring components under the 1.2/50 microsecond positive and negative impulse voltages. The breadth of the ring was various sizes at 0.25cm, 0.5cm, 0.75cm, 1.0cm, 1.2cm5 and 1.5cm. The gap space for specimen was fixed at 0.5cm with a diameter of 2.2cm. When applied the 1.2/50 microsecond positive and negative impulse voltage to 9kV to 150 kV. The results showed that at the level of 0kV to 60kV the LFA with different ring’s breadth have the same flashover length. The flashover length of LFA under 1.2/50 micro positive impulse voltage was longer than negative impulse voltage when adjusted the applied voltage level more than 81kV and the explicit difference of flashover lengths increased when increased the positive and negative impulse voltage to 130kV.