• Small motors tend to be more sensitive to overvoltage and saturation than do large motors.
• Overvoltage can drive up amperage and temperature even on lightly loaded motors. Thus, high voltage can shorten motor life even on lightly loaded motors.
• Efficiency drops with either high or low voltage.
• Power factor improves with lower voltage and drops sharply with higher voltage.
小电机比大电机对于超压和饱和更加敏感。
即便在轻微的负载下,超压也可以导致电机的电流和温度的上升。因此,高电压会缩短电机的寿命,即便电机的负载很轻微。
在低电压和超压的情况下,电机的效率都将下降。
低压时电机功率因子得到改善,但是,超压时电机的功率因子急剧下降。