上海古银杏防雷设施和效果的分析

Analysis on Lightning Conductor of Old Gingko, Shanghai and the Effect

上海的古银杏曾多次遭受雷击,根据雷击具有选择性的特点,通过现场踏勘,确定了易遭雷击的19株古银杏为防雷对象;设计了合适的防雷方案,安装了防雷设施;经测试防雷设施接地电阻均小于5Ω,符合规范要求,运行多年来防雷效果良好。

The old gingkoes of Shanghai have been damaged by lighting for many times. Based on the selectivity characteristic of lighting, this research selects 19 gingkoes which meet with lighting easily as protected objects, designs a suitable proposal of lighting protection, and installs lighting conductors after site exploration. After tests, it is found that the lighting conductors whose earth resistance is less than 5Ω are all in order, and for years they did good execution for lighting protection.