PEMASANGAN TRANSFORMATOR SISIPAN PADA GARDU DISTRIBUSI M.235 PENYULANG CUNGKEDIRO PT. PLN (PERSERO) RAYON MARIANA

After calculate load of M.235 distribution substation, the amount of power which used in transformer amounted to 159,25 kVA with loading percentage about 99,53%. Based on the plan that has been made, the magnitude of current rell be transferred from C majors to additional transformer amounted to 322.24 A (76% the load of C majoring), the power which used additional transformers amounted to 72.59 kVA. So, the power capacity of additional transformer that will be installed is 100 kVA. After installing the additional transformer (PH.0731), showed reduction of power losses and voltage drop by using Etap simulation on M.235 distribution substation. There was significant power losses reduction in M.235 distribution substation, from 15.7 kW to 3.3 kW. As well as the percentage of voltage drop at C majors, there is reduction from 10.83% to 2.09%. Keywords: Additional Substation, Overload, Power Losses, Voltage Dro