@thesis{thesis, author={Mubarok Rizky and Soewono Soetjipto}, title ={Desain Spesifikasi Filter Single Tuned Dengan Aplikasi Borland C++ 5.02 Untuk Meredam Harmonisa Pada Penurunan Daya Trafo 1000 kVA Apartemen XYZ}, year={2020}, url={http://156.67.221.169/5470/}, abstract={A problem affecting the power quality in the electrical system is harmonic formation. Where harmonisa is causing an impact on transformer's power capacity decrease. By measuring harmonica measures on a transformer of 1000 kva in xyz's six-day apartment, it's a 6 day long score of 14,707 %. The design of a single tuned filter specs with the Borland C++ 5.02 program for submarinating harmonic value. From calculating design design of the orde 5 with a value of xl =0 206 ohm, qvar = 311,296 ohm and r = 0.0021 ohm and 7 with xl =0.0105 ohm, qvar = 311,296 kvar and r = 0.0015 ohm. Then from the filter simulation using electrical transient programs it's got a thdi = 4.83 %. With the supply of filters in the order of 5 and 7, it can lower the value of thdi so that it can reduce the value of transforme maximum flow capacity by about 1.31 percent. Creating this filter program makes it easy for practitioners in designing value filters in the field..} }