在分相式电机里，设计启动绕组的电阻要比运行绕组的电阻大。
In the split-phase motor, the startup winding is designed with a higher resistance than the running winding.
一旦电机达到接近设计运行转速，离心开关开始动作，关断启动绕组与电网之间的连接。
Once the motor reaches near design operating speed, the centrifugal switch activates, opening the contacts and disconnecting the startup winding from the power source.
不要频繁地开关电机，这是因为电泵停转时会产生回流，若立即开机，会使电机负载启动，导致启动电流过大而烧坏绕组。
Do not frequently switch motor, This is because the pump will stop to have a return, if an immediate start, will start the electrical load, resulting in excessive current and start winding burn.
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