Analysis of Oil Dielectric Strength Insulation on Oil Circuit Breakers Based on Service Life and Operating Frequency

The electricity distribution breakdown can be caused the service life and operating frequency of Oil Dielectric Strength (ODS). Hence, it requires a study due to spare part is difficult find. This paper aims test ODS on Circuit Breaker (OCB) 13.8 kV aged between 29 43 years. used ASTM D1816 standard analyze effect oil circuit breaker physical, color strength ODS. For visual D1524 standard. based D1500 From results, seen that 6DN F1 was yellow-black in colors. level from 0.5 6, which striking difference. happens because had been for 3 years with 2 manual open times 11 trips large normal load 206A. In 8D F7 feeder, there also decrease voltage, far 45.6 9.7 kV. Therefore, declared failed below minimum 27 Based validity test, six samples were still within allowable limits range value being 92%. means valid.