ABSTRAKMotor induksi adalah alat listrik yang mengubah energi listrik menjadi energi mekanik. Motor induksi mempunyai banyak keunggulan dari segi teknis maupun ekonomis, karena itu motor induksi terutama jenis motor induksi tiga phasa banyak digunakan pada dunia industri. Akan tetapi motor induksi juga mempunyai kekurangan, antara lain arus starting besar yang dapat mengakibatkan penurunan tegangan sistem dan mengganggu kerja sistem peralatan lain dalam satu saluran. Pada motor induksi diperlukan suatu metode starting, yang bertujuan untuk mengurangi arus starting yang besar. Metode starting yang digunakan pada penelitian ini yaitu metode starting direct on line (DOL), star-delta, dan autotransformer, yang salah satunya dapat dioperasikan secara otomatis dengan menggunakan Programmable Logic Controller (PLC). Dari hasil penelitian diperoleh nilai arus starting motor induksi tiga phasa 10 Horse Power (HP) dengan metode starting direct on line (DOL) hubungan star sebesar 50,531 Amper, metode starting star-delta sebesar 29,301 Amper, metode starting autotransformer hubungan star 50% sebesar 12,792 Amper, 65% sebesar 21,618 Amper, 80% sebesar 32,747 Amper, dan diperoleh nilai torsi starting direct on line (DOL) hubungan star sebesar 49,479 N.m, starting star-delta sebesar 16,637 N.m, starting autotransformer hubungan star 50% sebesar 12,684 N.m, 65% sebesar 21,436 N.m dan 80% sebesar 32,471 N.m. ABSTRACTAn induction motor is an electrical device which can transform electrical energy into mechanical energy. Due to advantages that they provide in terms of technical and economic, induction motors, especially three-phase induction motors are widely used in industries. However, induction motors have several disadvatages, such as huge starting current causing voltage drop in a system that will interfere other parts in the system of one particular channel. Induction motors need a starting method, aiming to reduce huge starting current. The starting methods used in this research are direct on line (DOL), star-delta, and autotransformer, one of which can be operated automatically using Programmable Logic Controller (PLC). The result shows that the value of the starting current of a 10 Horse Power (HP) three-phase induction motor using DOL method is 50.53 Amps, while using star-delta method is 29.31 Amps, and using autotransformer method of star connection of 50%, 65% and 80% are 12.79 Amps, 21.61 Amps and 32.74 Amps respectively. In addition, the torsion value of DOL method of star connection is 49,479 N.m, star-delta method is 16.63 N.m, and autotransformer method of star connection of 50%, 65% and 80% are 12.68 N.m, 21.43 N.m and 32.47 N.m respectively.