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ZJ-H便攜式直流接地故障查找儀

發布日期：2025-01-02
訪問次數：831
地址：上海寶山

ZJ-H便攜式直流接地故障查找儀：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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ZJ-H便攜式直流接地故障查找儀

一、産品介紹：

ZJ-H用于在不斷電情況下查找發電廠、變電站直流系統接地點的准確位置。該儀器在原理上引入一種全新的探測方法----波形分析法，其主要特點和優點：檢測靈敏度高、排查系統分布電容能力強、不斷電查找、不影響系統正常運行、抗幹擾能力強、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。

本裝置由信號發生器、信號接收器和信號采集器（卡鉗）三部分組成。在查找直流系統故障時，三者須同時配合使用。

ZJ-H便攜式直流接地故障查找儀

二、技術指標

1、信號發生器

输出信号频率：2.5Hz

信号空载输出电压：±20V±5%

信号电压幅值误差：<5%

信号短路输出电流：≤80mA

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%

输入保险：200mA

大功率：3W

体积：300mm×270mm×200mm

2、信號接收器

信号电流检测灵敏度：0.5mA

信号发生器阻抗：40KW

大输出电流：2.5毫安

接收器显示：数字0-19

体积：210mm×100mm×32mm

A钳口尺寸：Φ50mm

B钳口尺寸：Φ7mm×9mm

3、整機

检测大接地电阻：300KΩ

检测大电容：20μF

接地电阻测量精度：0-4.5KΩ 误差≤0.5KΩ

接地电容检测范围：3-60uF

接地电容测量精度：3-10uF 误差≤1uF

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ZJ-H便攜式直流接地故障查找儀

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