Discusses the work principle and testing methods of line trap and combined filter, points out the important meaning of developing field test of line trap and combined filter.
讨论阻波器、结合滤波器的工作原理及测试方法，指出开展阻波器及结合滤波器现场测试的重要意义。
To make the over voltage Vs time function of line trap at short time current test by complex frequency field analysis is introduced in this paper.
用复频域分析法求出试验电流作用以后的阻波器上的过电压的函数。
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