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DFA1000直流系統接地故障測試儀

發布日期：2025-01-04
訪問次數：714
地址：上海寶山

DFA1000直流系統接地故障測試儀：是发电厂、变电站的直流系统为控制、保护、信号和自动装置提供电源，直流系统的安全连续运行对保证发供电有着极大的重要性。

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DFA1000直流系統接地故障測試儀

産品介紹

直流系統接地故障定點儀是發電廠、變電站的直流系統爲控制、保護、信號和自動裝置提供電源，直流系統的安全連續運行對保證發供電有著極大的重要性。由于直流系統爲浮空制的不接地系統，如果發生兩點接地，就可能引起上述裝置誤動、拒動，從而造成重大事故。因此當發生一點接地時，就應在保證直流系統正常供電的同時准確迅速地探測出接地點，排除接地故障，從而避免兩點接地可能帶來的危害。

DFA1000直流系統接地故障測試儀

産品參數：

◎系統不斷電查找接地點，不影響系統正常工作。
◎聲音報警提示接地支路。
◎檢測靈敏度高。
◎抗幹擾能力強，克服了系統分布電容和濾波電容的影響。
◎智能化程度高，人機界面友好。
◎安全可靠,操作簡單,易于攜帶。
技術指標
◎信號發生器
　输出信号频率 2.5Hz±1%
　低频信号空载输出电压 ±24V±5%(220V) ±12V±5%(110V/48V)
　低频信号电压幅值误差＜5%
　低频信号短路输出电流 ≤80mA
　输出口抗冲击能力 400V直流冲击
　电源电压 AC220V±10%
　电源频率 50Hz±5%
　zui大功率 2W
　体积 240×190×100mm
◎信號接收器
　信号电流检测灵敏度： 0.5mA
　电源： 7.2V可充锂电池组
　抗工频干扰： 5A
　体积： 130×158×73mm

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