The lower L/R ratio creates a small phase shift, not more than about 30 degrees, between the flux due to the main winding and the flux of the starting winding.

• 电感与电阻的低比率会产生一个不超过30度的小相移，这个相移是由主绕组决定的磁力线和由启动绕组决定的磁力线。可以通过改变启动绕组和运行绕组的连接来轻易改变启动时的旋转方向。