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GB 50057-2010 第4.5.2条 Code for Design Protection of Structures Against Lightning

Lightning protection system电气工程

GB 50057-2010 第4.5.2条

| **** | **Protection against lightning surge intrusion**: For all **low-voltage distribution lines** and **signal lines** (such as network, telephone, and cable TV) entering and leaving the hotel building, **Class I test** surge protective devices (SPDs) shall be installed at the **service entrance**. The voltage protection level \( U_p \) of the SPD shall not exceed **2.5kV** (for 220/380V systems). |

Other clauses of this standard

GB 50057-2010 第1.0.1条Code for Design Protection of Structures Against Lightning
GB 50057-2010 第1.0.2条Code for Design Protection of Structures Against Lightning
GB 50057-2010 第1.0.3条Code for Design Protection of Structures Against Lightning
GB 50057-2010 第1.0.4条Code for Design Protection of Structures Against Lightning
GB 50057-2010 第1.0.5条Code for Design Protection of Structures Against Lightning
GB 50057-2010 第1.0.6条Code for Design Protection of Structures Against Lightning
GB 50057-2010 第第4.2.1条条Code for Design Protection of Structures Against Lightning
GB 50057-2010 第第4.2.1条条Code for Design of Lightning Protection of Buildings
GB 50057-2010 第第5.2.1条条Code for Design Protection of Structures Against Lightning
GB 50057-2010 第2.0.1条Code for Design Protection of Structures Against Lightning
GB 50057-2010 第2.0.2条Code for Design Protection of Structures Against Lightning
GB 50057-2010 第2.0.3条Code for Design Protection of Structures Against Lightning

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