1761-L16AWA

更新日期：2019年05月06日
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所属行业：五金工业品-> 电子电工-> 配电装置、开关...
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1761-L16AWA

<<极快速冲击高压试验技术>>^[²^] ；

3) GIS互感器的传递过电压标准中B类冲击波波形过冲和震荡要给出限值，它直接影响二次电压。

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二、GIS互感器传递过电压

2.1 GIS互感器传递过电压测量电路及测量要求

根据标准《GB 20840.1-2010 》对于GIS用互感器传递过电压的测量要求，应通过50Ω同轴电缆适配器将B类冲击波U1施加在任一一次端子与地之间，GIS外壳应按运行方式接地。测量电路如图4所示。

图片1.png

(图4 )

传递过电压U2应在开路的二次端子上测量，通过50Ω同轴电缆连接输入阻抗为50Ω且带宽不低于100MHz的示波器读取峰值。当被测互感器有多个二次绕组时，应一次对每一个二次绕组进行测量，在二次绕组具有中间抽头时，只需在绕组满匝数对应的出头上进行测量。

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