在这种状况下，必须降低泵的转速，加大电机的功率，加大进出口的管径来减少介质的流动阻力。
Under this situation, we must reduce the speed of pump, increase the power of the motor, increase the import and export of pipe diameter to reduce the flow resistance of the medium.
按泵设计点轴功率1或1.4倍配备电机，超过匹配功率，请用户在订货时提出。
Motor matched according to 1 or 1.4 power. If motor power exceed, the customer must point out in order.
分析电动机功率损耗，阐述了泵类负载调压调速不仅可以大幅度地节能，而且不会造成电机过热。
This article analyses the loss of power of electric motor, and tells that pressure and speed adjustment of the pump not only save energy but also not lead to over heated of the electric motor.
由举升流体所需功率和螺杆泵转速预测电动机轴的负载功率，确定地面电机额定功率。
And the horsepower of surface motor is ascertained through anticipating the operating power of motor shaft according to the power of lifting liquid and rotational speed of PCP.
依据电机理论和泵的特性，分析并得出了在频率改变后，由频率计算电机转速及输出机械功率的方法。
Based on the theory of electric motor and the characteristics of pump, a new method for calculating output power and speed of an electric motor with changed frequency is presented.
依据电机理论和泵的特性，分析并得出了在频率改变后，由频率计算电机转速及输出机械功率的方法。
Based on the theory of electric motor and the characteristics of pump, a new method for calculating output power and speed of an electric motor with changed frequency is presented.
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