电磁干扰测量仪的记录输出口加入模拟电表网络的必要性  

Necessity of Adding Simulating Network at the Output Port of Electromagnetic Interference Instrument

作　　者：沙斐[1] 

机构地区：[1]北方交通大学电磁兼容科研室

出　　处：《电网技术》1992年第3期57-63,共7页Power System Technology

摘　　要：本文分析了某些干扰测量仪由于在记录通道中未考虑电表机械时间常数引起的记录值和电表读数不一致的原因,并根据线性系统频域分析理论导出可能导致的最大误差为+11dB。最后提出了采用模拟电表网络来避免这一误差的方法。The effect of mechanical time constant of indicating instrument which may cause the difference between recordings and instrument readings for some types of interference test receivers is analysed. The maximum possible errors in CISPR defined A,B,C,D frequency bands are calculated according to the methodology of frequecy domain analysis in linear system. It may reach +11dB for measuring long period pulse interference. To avoid this error,a network simulating the indicating instrument is recommended.

关 键 词：电磁 干扰测量仪 模拟电表 

分 类 号：TM937.3[电气工程—电力电子与电力传动]