ICS 13.220.01 P 16 DB43 湖 南 省 地 方 标 准 DB43/T 1855—2020 公安交通管理外场设备防雷技术规范 Technical specification for lightning protection of field equipment for public security traffic management 2020-09-30发布 湖南省市场监督管理局 2020-12-30实施 发 布 DB43/T 1855—2020 目 次 前言························································································································································ Ⅲ 1 范围 ···················································································································································· 1 2 规范性引用文件 ································································································································· 1 3 术语和定义 ········································································································································ 1 4 基本要求 ············································································································································ 3 5 技术要求 ············································································································································ 3 5.1 防直击雷····································································································································· 3 5.2 防雷电反击、防闪电感应、防雷击电磁脉冲············································································ 3 5.3 防闪电电涌侵入 ························································································································· 3 5.4 接地 ············································································································································ 4 5.5 等电位连接 ································································································································· 4 6 维护与检测 ········································································································································ 4 附录 A（规范性附录） 电涌保护器参数······························································································ 5 I DB43/T 1855—2020 II DB43/T 1855—2020 前 言 本文件按照 GB/T 1.1—2020 给出的规则起草。 本文件由湖南省气象局提出。 本文件由湖南省气象标准化技术委员会归口。 本文件主要起草单位：郴州市防雷中心，郴州市公安局交通警察支队。 本文件主要起草人：王佩、欧凯辉、谢威、吴泉望、张珺、曹媛贻、王庆、何辉、李新春、秦向宏、 李迎鑫、房赟、张婷、范桉吉、李丽华、张笑微、龙宏波、何楚明、曹代斌、祁永强、李富春、彭康甲。 III DB43/T 1855—2020 IV DB43/T 1855—2020 公安交通管理外场设备防雷技术规范 1 范围 本文件规定了公安交通管理外场设备防雷的术语和定义、基本要求、技术要求、维护与检测内容。 本文件适用于公安交通管理外场设备的防雷设计和施工及日常维护与检测。 2 规范性引用文件 下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件，仅 该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用于本文件。 GB 50348—2004 安全防范工程技术规范 GB 50057—2010 建筑物防雷设计规范 GB 50343—2012 建筑物电子信息系统防雷技术规范 GB 50169—2016 电气装置安装工程接地装置施工及验收规范 GA/T 670—2006 安全防范系统雷电浪涌防护技术要求 3 术语和定义 本标准规范性引用文件规定的以及下列术语和定义适用于本文件。 3.1 公安交通管理外场设备 field equipment for public security traffic management 公安交通管理外场设备为道路交通信号控制系统，闯红灯自动记录系统，交通视频监控系统，公路 车辆智能监测记录系统，交通信号发布系统，道路交通违法行为监测系统，交通流信息采集系统，机动 车测速仪，人行横道道路交通安全违法行为监测记录系统，机动车违法鸣笛自动取证系统，行人闯红灯 自动记录系统。 3.2 接闪器 air-termination system 由拦截闪击的接闪杆、接闪带、接闪线、接闪网以及金属屋面、金属构件等组成。 [GB 50057—2010,定义 2.0.8] 3.3 引下线 down-conductor system 用于将雷电流从接闪器传导至接地装置的导体。 [GB 50057—2010,定义 2.0.9] 3.4 接地装置 earth-termination system 接地体和接地线的总合，用于传导雷电流并将其流散入大地。 [GB 50057—2010,定义 2.0.10] 1 DB43/T 1855—2020 3.5 接地体 earth electrode 为确保需要接地的系统、设备接地良好，地面以下与大地接触的导体。 [GB 50057—2010,定义 2.0.11] 3.6 直击雷 direct lighting flash 闪击直接击于建筑物、其他物体、大地或外部防雷装置上，产生电效应、热效应和机械力者。 [GB 50057—2010,定义 2.0.13] 3.7 闪电电磁感应 lightning electromagnetic induction 由于雷电流迅速变化在其周围空间产生瞬变的强电磁场，使附近导体上感应出很高的电动势。 [GB 50057—2010,定义 2.0.15] 3.8 闪电感应 lightning induction 闪电放电时，在附近导体上产生的雷电静电感应和雷电电磁感应，它可能使金属部件之间产生火花 放电。 [GB 50057—2010,定义 2.0.16] 3.9 闪电电涌 lightning surge 闪电击于防雷装置或线路上以及由闪电静电感应或雷击电磁脉冲引发，表现为过电压、过电流的瞬 态波。 [GB 50057—2010,定义 2.0.17] 3.10 闪电电涌侵入 lightning surge on incoming services 由于雷电对架空线路、电缆线路或金属管道的作用，雷电波，即闪电电涌，可能沿着这些管线侵入 屋内，危及人身安全或损坏设备。 [GB 50057—2010,定义 2.0.18] 3.11 雷击电磁脉冲 lightning electromagnetic impulse(LEMP) 作为干扰源的雷电流及雷电电磁场产生的电磁场效应。 [GB 50057—2010,定义 2.0.25] 3.12 电涌保护器 surge protective device(SPD) 用于限制瞬态过电压和分泄电涌电流的器件。它至少含有一个非线性元件。 [GB 50057—2010,定义 2.0.29] 3.13 电压保护水平 voltage protection level(Up) 表征电涌保护器限制接线端子间电压的性能参数，其值可从优先值的列表中选择。该值应大于所测 量的限制电压的最高值。 [GB 50057—2010,定义 2.0.44] 3.14 雷电防护区（LPZ0） lightning protection zone 2 DB43/T 1855—2020 规定雷电电磁环境的区域，又称防雷区。 [GB 50343—2012,定义 2.0.2] 3.15 接地端子 earthing terminal 从接地体引出地面预留供需要接地的系统、设备接地用的端子。 [GB 50343—2012,定义 2.0.8] 4 基本要求 4.1 公安交通管理外场设备的防雷应按其所属防雷类别的相关规定和所处场所采取防直击雷、防雷电