The choice of motor rated power

1. The mechanical mode of load steady continuous work, should choose according to the mechanical

shaft power. When the rotational inertia of ac synchronous motor the mechanical or starting static resistance torque is large, cage type motor and synchronous motor should be calibrated according to the starting conditions. Synchronous motor to pull in torque should also check. 2. The continuous work of the mechanical load change, general or equivalent torque should be according to the equivalent current method choice, and calibrated according to allow overload torque. 3. With respect to the manner of intermittent work machines, the power rating shall be according to the equivalent load of typical cycle of conversion to standard load sustained rate of the power to choose, and calibrated according to allow the load torque. 4. Machinery of short-time working, should choose short-term fixed motor, can also according to allow the motor load torque choose intermittent quota. With respect to the manner of intermittent work machinery, when load sustained rate is more than asynchronous motor 60%, should choose continuous rating motor. 5. Medium temperature of the motor using site should comply with the regulations of motor technical conditions, temperature, insulation class, when using the location of altitude and medium temperature does not accord with regulation of working conditions, the power of the motor should be in accordance with the provisions of the technical conditions. 6. The motor rated power should be selected according to the mechanical type and its important degree, proper www.facebook.com/dongfeng.motor reserve coefficient (load factor).