@thesis{thesis, author={Pratama Rionaldi Gigih Imam and Soewono Soetjipto}, title ={ANALISIS PENGARUH SISTEM PENTANAHAN TERHADAP BACKFLASHOVER PADA MENARA SALURAN TRANSMISI TEGANGAN TINGGI 150 KV GI DURI KOSAMBI-GI MUARA KARANG BARU}, year={2017}, url={http://156.67.221.169/975/}, abstract={Lightning strikes on high voltage transmission lines can cause disruption of power supply resulting in a fire jump on the insulator in the transmission tower. Disruption of the insulator can be caused by backflashover (reverse flame voltage) on the transmission tower. Back-flashover phenomenon is a disturbance in high-voltage air ducts caused by direct strikes on ground wires and towers. Back-flashover will occur when the voltage on the channel insulator is greater than or equal to the critical voltage of the isolator fire jump so that a fire jump occurs on the isolator. Therefore, an analysis of the effect of the grounding system on backflashover on high voltage transmission towers using descriptive method to meet the analysis of the research in order to reduce the risk of electrical equipment damage on the transmission line due to the lightning strikes. So it can be seen from the above probability calculation with the assumption of 50% stroke on the pole and 50% on the goal, obtained the probability that the flow of fire jump will be smaller if the value of the earth resistance is getting smaller. With an earth value of 4,60 ?. In the probability of a jump flow current of 48,09%. As for earth value 0,02 ? in can probability jump of 47,03%.} }