T2航站楼为郑州新郑国际机场二期扩建工程的核心项目。由于T2航站楼接地装置规模庞大且形状特殊，普通的便携式接地电阻测试仪难以准确评估其性能。河南省防雷中心利用国内先进的变频大电流测试系统对其开展性能试验，对该接地装置进行定性分析。%T2 terminal is the core project of the second phase expansion project of Zhengzhou Xinzheng international airport. The grounding device of T2 terminal is large and in special shape, so the ordinary portable grounding resistance tester is difficult to accurately assess its performance. Lightning Protection Center of Henan Province uses advanced frequency conversion large current test system to test its performance and carries out qualitative analysis of the grounding device.
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