Motor Description

The motor can be started directly with the power supply. The step-down starting if the power supply capacity is insufficient. The full-load starting current is 5 to 7 times larger than the actual rated current. When reduced-voltage starting, the torque decreases in proportion to the square of the voltage. Therefore, the full-load starting is recommended if the static load is large.

The power supply of motor shall be equipped with multi-channel protection devices such as overheat protection, short-circuit protection, open phase protection and zero sequence protection, so as to prevent single protection failure. The setting value of the protection device can be adjusted according to the rated current value on the motor nameplate, but the setting value shall not exceed the rated value of the motor nameplate.

The motor should not be started continuously for many times to prevent the motor from overheating and even burning out due to frequent starting. When the deviation between frequency (at rated voltage) and rated value exceeds 1% or the deviation between voltage (at rated frequency) and rated value exceeds 5%, the motor cannot guarantee continuous rated power output. Overload is not allowed for motors in continuous operation.