YFP系列直联式风机水泵用三相异步电动机外型美观、噪声低、振动小，适用于能承受一定轴向力的直联式风机、水泵类等机械。
YFP motors are designed direct coupling with the machines, such as pumps and fans, which have the axial load. The motors are featured with low noise and little vibration.
分析了四类常见的电动机断相运行，并由此推出和验证了断相运行状态下的电流—电压等比规律。
Four kinds of common motor phase failure operation are analysed, and therefrom the current-voltage equal-ratio rule is derived and verified.
装置结合内馈绕线式电动机构成风机、水泵类负载的调速系统，具有极高的性价比。
A high feature and low cost drive system can be composed of this kind of drive combining a internal-feedback wound-rotor induction motor for loads like fans and pumps.
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