▷Before ordering our phase converter, please give us your engine purpose information to recommend you a suitable phase converter. Also, note the following points carefully. 1. This article is worked on the 5HP engine. (3.7KW, 15 amps) 2. The efficiency is about 90~95%. 3. The input/output voltage of our DPS is from 200v to 240v. 4. The motor voltage should be from 200v to 240v. If your motor voltage is 380v or 440v, you should change the motor cable to 200v -240v purpose to connect with the output of our DPS. 5. This item should be used as a DPS per motor. Multiple engines are not allowed. 6. The thickness of the wires should be used at least 5 SQ. 7. Only single-phase motor brake is allowed. (The three-phase engine brake does not work on our DPS) 8. You can check three phases at the DPS output when the engine is running. If the engine is not running, three phases of the DPS output could not be checked. 9. If your motor has magnetic starter, or electronic switch, or brake, the operating cables of this device must be connected in "U" and "W" output from our phase converter. Therefore, if your motor is not working well or the motor is reversing, you should turn off the power immediately and you have to change the wires at the output (U, V, W) of our phase converter. Actually, when you connect the wires from the output of the phase converter to your motor, you could succeed the first time, or the second time, or the third time.