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主營産品： QDB-101直流接地故障查找儀 NSHH蓄電池活化儀 BL608直流系統接地故障測試儀 ML.1-LJ-805直流接地故障定位儀 NSNZ蓄電池內阻測試儀

直流接地故障快速查找儀怎樣實現接地查找

更新时间：2020-04-13 点击次数：1528次

　　直流系統接地是一種易發生且對電力系統危害較大的故障。直流系統正極接地，可能造成繼電保護誤動，因爲跳閘線圈接直流電源負極，系統再有一點接地或絕緣不良，可能引起保護誤動；直流系統負極接地，系統再有一點接地或絕緣不良，可將跳閘回路或合閘回路短路，造成保護拒動，此時系統發生故障，保護的拒動必然導致系統事故擴大，同時還可能燒壞繼電器的觸點或燒保險。

　　直流接地故障快速查找儀實現快速查找直流系統中的各種接地和混線等故障，解決了絕緣狀態不好的虛接地，高阻接地、多點接地、單點接地、小電阻接地、直接接地、混線接地、環路接地、電容接地、竄交流接地、晶體管隔離接地等多種接地方式引起的故障，能迅速查找和定位。

　　直流接地故障快速查找儀怎樣實現接地查找

　　将带测试夹的测试线插在印有“接地查找”的插孔中，在菜单中，通过方向键选择“接地查找”按【确认】后即可进入接地查找信号参数设置菜单，界面如下：

　　接地查找設置菜單

　　默認輸出是350HZ，50V信號。在這裏按←/→鍵設置好輸出信號參數後再按【確認】,將進行外部輸入電壓檢測，顯示電壓數值，2秒後將返回“接地查找信號輸出”界面，等待信號輸出。如下：

　　接地查找工作界面

　　在接地查找信号输出界面可以按←/→键切换输出信号的模式。模式有“断续”和“连续”两种，默认是“断续”模式。注意只有频率在2.5Hz以上才有“断续”和“连续”两种模式。

　　接地查找信號輸出界面

　　接地查找時，等待約2秒後會顯示了選擇的輸出頻率，測試夾兩端的電壓，電流，電阻，以及輸出波形等以供參考。按【返回】，關斷信號輸出，返回“輸出信號設置”界面。

直流接地故障快速查找儀

上一篇:不要怀疑，直流系統接地故障測試儀就是这么好用下一篇:新一代直流系統接地故障測試儀产品特征更显著

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直流接地故障快速查找儀怎樣實現接地查找