频率和波形失真度变化在相位表检定中的影响

Influence of frequency and wave distortion on the verification of phasemeter

电子式工频相位表已广泛用于高准确度的检定中,但由于其与模拟指针式相位表工作原理不同,因此,在相互检定时,受检定条件的影响也不尽相同。本文简单分析了两者不同的工作原理,阐明其所受频率和波形失真影响的不同,并以实验数据进行验证。得出结论:电子式工频相位计受波形失真影响较大,而模拟指针式相位表受频率影响较大,因此,检定中应充分注意二者的影响。

Electronic Industrial frequency phasemeter have found extensively applications in high accuracy Verification.As its working principle is totally different from that of analog type of needle Phasemeter, verification condition influences are also different in muhual verification. The article simply analysed the above two different working principles and clarified different influences under the frequency and wave distortion, then followed the experimental data verification and reach the conclusion： Electronic Industrial frequency phasementer is mere influenced by wave distortion While needle Phasemeter is mere influenced by Frequency. So in the verification we have to pay mere attention on their mutual influence.