序 号 Serial number | 项 目 Items | 技术性能 Technical performances |
1 | 线芯直流电阻(≤Ω/Km) Core DC resistance | 见上表 See above table |
2 | 绝缘电阻(≥MΩ Km) Insulating resistance | 见上表 See above table |
3 | 5min工频电压试验 5min power frequency voltage experiment | 0.66/1.14 | 3.7KV工频电压绝缘不击穿 3.7KV power frequency voltage insulation does not penetrate |
0.38/0.66 | 3KV工频电压绝缘不击穿 3KV power frequency voltage insulation does not penetrate |
0.3/0.5 | 2KV工频电压绝缘不击穿 2KV power frequency voltage insulation does not penetrate |
控制线芯Control core | 1.5KV工频电压绝缘不击穿 1.5KV power frequency voltage insulation does not penetrate |
4 | 热延伸试验 The heat extends the experiment | ≤175% |
5 | 单根垂直燃烧试验 Single wire burning test | MT386 |
6 | 成束燃烧试验 Group burning test | zui大线芯截面积在50mm2及以上时 符合A类成束燃烧试验要求 Max. core sectional area more than 50mm2conforms A kind group burning test |
7 | zui大线芯截面积在50mm2及以下时 符合B类成束燃烧试验要求 Max. core sectional area more than 50mm2conforms B kind group burning |