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请下载后查看，本文暂不支持在线获取查看简介。一段的保护处有无破坏情况；对于暗装的防雷网或利用混凝土柱子钢筋作为引下线的设施，应每隔５－６年由顶部明装防雷线的地方检查测量１次接地电阻；接地卡子有无接触不良情况；测量全部接地装置的接地电阻，如发现接地电阻值有很大变化时，应对接地系统进行全面检查，必要?
Please download to view, this article does not support online access to view profile. For a concealed lightning protection network or the use of concrete columns as a down lead wire reinforcement facilities should be every 5 to 6 years from the top of the installation of lightning protection line place inspection and measurement of a grounding resistance ; Grounding clamp whether the bad contact; measuring all grounding device grounding resistance, grounding resistance value found if there is a great change, the grounding system should be fully checked, it is necessary?