Before purchasing a DPS, be sure to check that the DPS model is compatible with your motor specifications. 1.MY-PS-15 model should be used for a 10HP(7.5kW) 30amps 3-phase motor. 2.Do not use a DPS model that is not suitable for your motor specifications. Please check the voltage(V), rated current(A), and horsepower(HP) of the motor, and select a DPS by referring to the DPS model selection table. In special cases, be sure to consult with the manufacturer and seller. 3.One DPS must be used for one motor only. 4.Input/output voltage of DPS is 200V-240V. 5.The voltage of the motor should be 200V-240V. 6.The efficiency is around 90% when using a DPS model that matches the electric motor specifications. 7.The thickness of wires should be suitable for current. 8.DPS does not operate on 3-phase motor installed with 3-phase brake. DPS only works on 3-phase motor installed with a single-phase brake. 9.You can check 3-phase on the output of DPS when your motor is running. If your motor is not running, you can't check the 3-phase from the output of DPS. 10.If a magnetic contactor is connected to the motor and DPS, you must connect two control wires of the magnetic contactor to ‘U' and ‘W' of the DPS output. If the motor does not work even though the power is turned on after connecting the DPS and the motor, please try swapping the positions of wires connected to ‘U', ‘V', and ‘W' of the DPS output at least 3 times. 11.When the motor load is less than 50%, there may be an imbalance from the voltages and currents output from the DPS. Normally, when the motor load is over 50%, voltages and currents will be balanced.