NB／T 10421-2020 低压配网不平衡电流综合治理装置技术规范

ICS 29.130.01 K 31 NB 中华人民共和国能源行业标准 NB/T 10421—2020 低压配网不平衡电流综合治理 装置技术规范 Technical specification of comprehensive treatment equipment for unbalanced current in low voltage distribution grid 2020-10-23 发布 2021-02-01 实施 国家能源局 发布 NB/T 10421—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 产品型号、含义及基本参数 ····································································································································· 3 4.1 型号及含义 ······················································································································································ 3 4.2 主要产品型号及其基本参数 ····························································································································· 4 5 技术要求 ·································································································································································· 4 5.1 功能要求 ·························································································································································· 4 5.2 使用条件 ·························································································································································· 4 5.3 外观、部件及元件 ············································································································································· 5 5.4 绝缘性能 ·························································································································································· 5 5.5 电气性能指标 ····················································································································································· 5 5.6 保护功能 ·························································································································································· 6 5.7 控制逻辑 ·························································································································································· 6 5.8 电网电压适应性 ················································································································································· 7 5.9 温升限值 ·························································································································································· 7 5.10 电磁兼容性 ······················································································································································ 7 5.11 防护性能 ·························································································································································· 8 5.12 通信功能 ·························································································································································· 8 6 检验方法 ·································································································································································· 8 6.1 检验条件 ·························································································································································· 8 6.2 外观、部件及元件检验 ····································································································································· 9 6.3 绝缘耐压检验 ····················································································································································· 9 6.4 基本功能检验 ··················································································································································· 10 6.5 性能检验 ·························································································································································· 10 6.6 保护功能检验 ··················································································································································· 11 6.7 电网电压适应性检验 ······································································································································· 11 6.8 控制逻辑检验 ··················································································································································· 11 6.9 温升检验 ·························································································································································· 11 6.10 损耗检验 ························································································································································ 12 6.11 电磁兼容性检验 ·············································································································································· 12 6.12 噪声检验 ························································································································································ 12 Ⅰ 以下是图片中的文字识别结果，已按目录层级做简单排版： **NB/T 10421—2020** 6.13 防护性能检验 ························································································································· 12 6.14 环境试验 ······························································································································· 12 **7 检验规则** ······································································································································ 13 7.1 检验分类 ······························································································································· 13 7.2 型式试验 ······························································································································· 13 7.3 出厂检验 ······························································································································· 13 7.4 现场检验 ······························································································································· 14 **8 标志、包装、运输、贮存** ············································································································· 14 8.1 标志 ······································································································································· 14 8.2 包装 ······································································································································· 14 8.3 运输 ······································································································································· 14 8.4 贮存 ······································································································································· 14 **附录 A（规范性附录） 装置 MODBUS 通信协议** ········································································· 15 A.1 适用范围 ······························································································································· 15 A.2 引用标准 ······························································································································· 15 A.3 底层协议 ······························································································································· 15 A.4 物理接口 ······························································································································· 15 A.5 数据传输速率 ······················································································································· 15 A.6 字符格式 ······························································································································· 15 A.7 数据类型 ······························································································································· 15 A.8 应用层数据包/帧格式定义 ··································································································· 16 A.9 命令/响应信息详解 ··············································································································· 17 A.10 CRC 计算函数 ····················································································································· 21 **附录 B（资料性附录） 不平滑计算方法** ····················································································· 22 B.1 幅值和相位均已知的情况 ··································································································· 22 B.2 幅值已知但相位不确定的情况 ··························································································· 22 **附录 C（资料性附录） 装置控制逻辑图** ····················································································· 23 8