NB／T 10809-2021 3.6kV～40.5kV交流金属封闭开关设备用绝缘套管

ICS 29.080.20 CCS K 48 NB 中华人民共和国能源行业标准 NB/T 10809—2021 3.6 kV～40.5 kV 交流金属封闭开关设备 用绝缘套管 Insulated bushing for alternating-current metal-enclosed switchgear for rated voltage above 3.6 kV and up to and including 40.5 kV 2021-11-16发布 2022-02-16实施 国家能源局 发布 以下是图片中目录内容的识别结果，已按原版式简单排版： **NB/T 10809—2021** **目 次** 前言 ········································································································································· III 引言 ········································································································································· IV 1 范围 ······································································································································· 1 2 规范性引用文件 ························································································································· 2 3 术语和定义 ······························································································································· 2 4 正常和特殊使用条件 ··················································································································· 3 5 额定值 ······································································································································· 3 5.1 概述 ··································································································································· 3 5.2 额定电压 (U₀) ····················································································································· 4 5.3 额定绝缘水平 (U₀, U) ·········································································································· 4 5.4 额定频率 (f) ························································································································· 4 5.5 额定连续电流 (I) ·················································································································· 4 5.6 额定短时耐受电流 (Iₖ) ·········································································································· 5 5.7 额定峰值耐受电流 (Iₚ) ·········································································································· 5 5.8 额定短路持续时间 (tₖ) ·········································································································· 5 5.9 统一爬电比距 ······················································································································· 5 5.10 最小标称耐受电压 ··············································································································· 5 5.11 绝缘用的额定充入压力 (适用时) ··························································································· 6 6 设计和结构 ······························································································································· 6 6.1 概述 ··································································································································· 6 6.2 对管中气体的要求 ················································································································· 6 6.3 对管中气体的要求 ················································································································· 6 6.4 接地 ··································································································································· 6 6.5 安装 ··································································································································· 7 6.6 元件 ··································································································································· 7 6.7 材料及镀层 ························································································································· 7 6.8 结构的一般要求 ····················································································································· 8 6.9 统一爬电比距 ······················································································································· 8 7 型式试验 ··································································································································· 8 7.1 概述 ··································································································································· 8 7.2 绝缘试验 ······························································································································· 9 7.3 外形和尺寸检查 ··················································································································· 10 7.4 绝缘试验 ····························································································································· 10 7.5 短时耐受电流和峰值耐受电流试验 ························································································· 11 7.6 连续电流试验 ······················································································································· 12 7.7 温度变化试验 ······················································································································· 13 7.8 基座负荷耐受试验 ················································································································· 13 7.9 密封试验 ······························································································································· 14 NB/T 10809—2021 7.10 材料试样试验 …… 14 8 出厂试验 …… 14 8.1 概述 …… 14 8.2 出厂试验项目 …… 15 8.3 外观和尺寸检查 …… 15 8.4 X射线探伤检查 …… 15 8.5 工频干耐受电压试验 …… 15 8.6 局部放电试验 …… 15 8.7 密封试验（适用时） …… 15 9 套管的选用导则 …… 15 9.1 概述 …… 15 9.2 额定值的选择 …… 16 9.3 环境方面 …… 16 10 查询、投标和订货时提供的资料 …… 17 10.1 应随订货单和询问单一起提供的资料 …… 17 10.2 投标时应提供的资料 …… 17 11 包装、标识、运输及贮存 …… 17 11.1 包装 …… 17 11.2 标识 …… 18 11.3 运输 …… 18 11.4 储存 …… 18 12 安全 …… 18 12.1 概述 …… 18 12.2 电气方面 …… 18 12.3 机械方面 …… 18 12.4 热性能方面 …… 18 13 产品对环境的影响 …… 18 附录A（资料性） 套管的主要尺寸特性 …… 20 附录B（资料性） 绝缘试验方法 …… 26 附录C（规范性） 套管型号编制方法 …… 27 参考文献 …… 28 II