Technical Study of Arresters in the 20 KV Distribution Network at PT. PLN RAYON TANDES

Arrester is a device in an electrical system that will protect electrical equipment caused by lightning. Study the characteristics of lightning rods so you can see their performance in protecting transformers during lightning surges. Pay attention to the factors that will influence the voltage and surge current, the distance of the lightning protection, the slope of the incident wave, the speed of the surge wave, and the basic insulation level. The level of failure to protect against lightning occurs because of the basic insulation level of the device and the location of the lightning protection device, in calculating the voltage value. The nominal lightning rod is installed continuously on the lightning rod without affecting its operating characteristics. The rated voltage value of the lightning rod is 22 kV, the rated voltage of the 20 kV lightning rod is 24 kV in the distribution network and the protection factor value is the lightning protection level. After making the protection level value 95.7 kV, the protection factor value with the TID of the 125 kV transformer is determined. The protection factor value is 23.44, the protection factor value is 20% higher than the tolerance factor.