ICS 29.180 K 41 备案号： 63143-2018 中华人民共和国电力行业标准 DL / T 2004 — 2019 直流电流互感器使用技术条件 Technical specification of DC current transformer 2019-06-04 发布 2019-10-01 实施 国家能源局 发 布 DL / T 2004 — 2019 I 目 次 前言 ........................................................... .................... Ⅲ 1 范围............................................................ .................... 1 2 规范性引用文件....................................................... ............... 1 3 术语和定义......................................................... ................. 2 4 使用条件 ......................................................... .................. 3 4.1 一般要求 ............................................................... ............ 3 4.2 正常使用条件 ............................................................... ........ 3 4.3 特殊使用条件 ............................................................... ........ 4 5 技术要求 ......................................................... .................. 4 5.1 额定一次电流 ..................................................... .............. 5 5.2 过负荷电流 ...................................................... ............... 5 5.3 额定短 时热电流 .................................................... ............. 5 5.4 额定动 稳定电流 .................................................... ............. 5 5.5 额定电压 ....................................................... ................ 5 5.6 绝缘要求 ....................................................... ................ 5 5.7 温升要求 ....................................................... ................ 7 5.8 无线电 干扰电压要求 .................................................. ........... 8 5.9 电磁兼容要求 ..................................................... .............. 8 5.10 准确级误差限值 ................................................... ............. 9 5.11 频率特性要求 .................................................... .............. 9 5.12 阶跃响应 ...................................................... ................ 9 5.13 机械强度 ...................................................... ................ 9 5.14 防护等级 ...................................................... ............... 10 5.15 光纤传输信号衰减 .................................................. ........... 10 5.16 模拟量输出额定值 .................................................. ........... 10 5.17 数字量输出要求 ................................................... ............ 10 6 结构与选型要求 ...................................................... .............. 10 6.1 一般要求 ....................................................... ............... 10 6.2 干式直 流电流互感器的要求 ............................................... ....... 11 6.3 充油式 直流电流互感器的要求 .............................................. ...... 11 6.4 充气式 直流电流互感器的要求 .............................................. ...... 11 7 试验.............................................................. ................. 1 1 7.1 试验分类 ....................................................... ............... 11 7.2 型式试验 ....................................................... ............... 11 7.3 例行试验 .......................................................... ............. 12 7.4 特殊试验 ....................................................... ............... 13 7.5 抽样试验 ....................................................... ............... 14 DL / T 2004 — 2019 II 7.6 现场交接试验 ..................................................... ............. 14 8 标志 ........................................................... ................... 14 8.1 端子标志 ....................................................... ............... 14 8.2 铭牌标志 ....................................................... ............... 14 9 使用期限 ......................................................... ................. 15 10 包装、运 输和贮存 .................................................... ............. 16 10.1 包装 ...................................................