Along with the increase of frequency, the meter measure error add, and the error of induction watt-hour meter relate to harmonics times and harmonics power.

• 感应式电能表随着频率的增加，计量误差加大，具有下降式的频率特性； 感应式电能表的计量误差与谐波次数的高低、谐波功率的大小、谐波功率的方向有关；