圖4 在單相電路中驗證不帶短路保護的二極漏電保護器和短路保護器的配合及驗證漏電保護器的短路接通分斷能力的試驗電路圖

　　N-中性線；S-電源；R-可調電阻；L-可調電感；P-短路保護器；D-被試漏電保護器；B-調節用臨時連接；C-額定限制短路電流試驗的連接；T-接通短路裝置；O₁-記錄電流振子；O₂-記錄電壓振子；D₁-檢測故障電流裝 置；R₁-裝置D₁的限流電阻；R₂-調節I_Δ的可調電阻；R₃-附加電阻，用來獲得小于額定限制短路電流的電流；S_W1-輔助開關

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