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SZ-ZL-74直流系統接地故障探測儀

發布日期：2025-01-03
訪問次數：956
地址：上海寶山

SZ-ZL-74直流系統接地故障探測儀：用于在不断电情况下，查找发电厂、变电站直流系统接地点的准确位置。该仪器在原理上引入一种全新的探测方法----波形分析法，其主要特点和优点: 检测灵敏度高，排查系统分布电容能力强，不断电查找，不影响系统正常运行，抗干扰能力强,安全可靠等。

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SZ-ZL-74直流系統接地故障探測儀

産品介紹：

直流系统接地故障，从接地性质、接地发生的原因及其表现形式上来看，总体来说大致有以下几种情况：电阻性接地、有源接地、由分布电容引起的容性假接地、非线性电阻接地、受负荷电流干扰的接地、由平衡桥引起的接地故障等。通常易发生且出现多的，便是电阻性接地故障。但无论那种形式的接地，都有需要及时排除，保证系统的稳定运行。

LP-ZL-74直流系统接地故障探测仪用于在不断电情况下，查找发电厂、变电站直流系统接地点的准确位置。该仪器在原理上引入一种全新的探测方法----波形分析法，其主要特点和优点: 检测灵敏度高，排查系统分布电容能力强，不断电查找，不影响系统正常运行，抗干扰能力强,安全可靠等。

波形分析法，就是利用在直流母線與地之間，加入一種特定的周期性電壓信號，通過卡鉗式探頭探測各支路電流，分析、計算電流信號基波與諧波的相位及相位差，進而判斷是否存在接地故障及接地故障點。儀器測試出容性電流和阻性電流排除電容的影響。

SZ-ZL-74直流系統接地故障探測儀

技術指標

1。信号发生器
输出信号频率：10-30Hz
信号空载输出电压：0-20V±5%
信号电压幅值误差：<5%
信号短路输出电流:≤50mA
输出口抗冲击能力：400V直流冲击
电源电压：AC220V±10%
电压频率：50Hz±5%
功率：20W；输入保险：1A
2、信号接收，信号电流检测灵敏度：0.5mA

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