ICS 29.020 CCS K 04 发 布 国家能源局 DL 中华人民共和国电力行业标准 DL/T 1156— 2025 代替 DL/T 1156— 2012 串联补偿装置用金属氧化物限压器 Metal-oxide varistors for series capacitor banks 2025-06-30发布 2025- 12-30实施 DL/T 1156— 202X I 目次 前 言 ............................................................................ 1 1 范围 ................................................................................ 3 2 规范性引用文件 ...................................................................... 3 3 术语和定义 .......................................................................... 3 4 型号命名 ............................................................................ 4 MOV型号命名 ..................................................................... 4 4.1 MOV铭牌 ......................................................................... 5 4.2 5 运行条件 ............................................................................ 5 正常运行条件 .................................................................... 5 5.1 特殊运行条件 .................................................................... 5 5.2 6 技术要求 ............................................................................ 5 外套的绝缘耐受性能 .............................................................. 5 6.1 耐污秽性能 ...................................................................... 5 6.2 参考电压 ........................................................................ 5 6.3 持续运行电流 .................................................................... 6 6.4 0.75倍直流参考电压下漏电流 ...................................................... 6 6.5 残压 ............................................................................ 6 6.6 局部放电 ........................................................................ 6 6.7 密封性能 ........................................................................ 6 6.8 电流分布 ........................................................................ 6 6.9 重复能量耐受性能 ............................................................... 6 6.10 能量耐受和工频电压稳定性 ....................................................... 6 6.11 短路性能 ....................................................................... 6 6.12 MOV的机械强度 .................................................................. 6 6.13 复合外套外观检测 ............................................................... 7 6.14 7 试验方法 ............................................................................ 7 测量设备及准确度 ................................................................ 7 7.1 试品要求 ........................................................................ 7 7.2 外套绝缘耐受试验 ................................................................ 7 7.3 残压试验 ........................................................................ 7 7.4 重复能量耐受试验 ................................................................ 8 7.5 长期稳定性试验 .................................................................. 8 7.6 散热特性试验 .................................................................... 8 7.7 能量耐受和工频电压稳定性试验 .................................................... 8 7.8 短路电流试验 .................................................................... 9 7.9 局部放电试验 ................................................................... 9 7.10 机械负荷试验 ................................................................... 9 7.11 密封性能试验 ................................................................... 9 7.12DL/T 1156— 202X II 持续运行电流试验 ............................................................... 9 7.13 工频参考电压试验 ............................................................... 9 7.14 直流参考电压试验 ............................................................... 9 7.15 0.75倍直流参考电压下漏电流试验 ................................................. 9 7.16 电流分布试验 ................................................................... 9 7.17 复合外套外观检查 .............................................................. 10 7.18 气候老化试验 .................................