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GB 50057-2010 第4.3.5条 Code for Design Protection of Structures Against Lightning

Lightning protection system电气工程

GB 50057-2010 第4.3.5条

| **** | **Grounding device**: When the lightning protection grounding shares a grounding device with the electrical system, the grounding resistance shall not exceed **1Ω** (per the lowest requirement among them). For an independent grounding device (e.g., lightning protection grounding only), the impulse grounding resistance shall not exceed **10Ω**. |

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