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由于通用变频器的电压和电流波形通常含有高次谐波,所以,在选择测量仪表的测量方法时应该区别不同的情况.测量电路如图1所示.本文对变频器测量时与普通交流50H_Z电源测量的不同方面加以说明.
As the general frequency converter voltage and current waveforms usually contain higher harmonics, so the choice of measuring instruments measuring method should be different when the difference between the measurement circuit shown in Figure 1. In this paper, the frequency converter measurements and ordinary AC 50H_Z Power measurement to explain different aspects.