电缆结构示意图 IIIustration of cable structure矿用电力电缆
![](http://www.ks-yichu.com/static/upload/image/20230421/1682042102582922.gif)
使用特性 Service characteristics 矿用电力电缆
电缆导体的*高额定温度 Electric cable conductor Max. rated temperature | XLPE绝缘90℃, PVC绝缘70℃ XLPE insulation90℃ PVC insulation70℃ |
电缆敷设时的环境温度 Cable laying environment temperature | ≥0℃ |
短路时电缆导体的*高温度(持续时间≤5S) Short circuit electric cable conductor max. temperature | XLPE绝缘≤250℃, PVC绝缘≤160℃ XLPE insulation≤250℃PVC insulation≤160℃ |
电缆的*小弯曲半径 Minimun bending radius | 为电缆弯曲试验用圆柱直径的2倍 Uses the column diameter for the electric cable bend test 2 times |
电缆主要技术性能 Major technical performances矿用电力电缆
1、 电缆导体直流电阻及绝缘电阻 Cable conductor DC resistance and insulated resistance矿用电力电缆
型 号 Model | 标称截面 (mm2) nominal sectional | +20℃导体直流电阻(≤Ω/Km) DC resistance of the conductor at 20℃ | +20℃绝缘电阻常数(≥MΩ.Km) Insulation resistance at 20℃ |
MVV MVV22 MVV32 MYJV MYV22 MYJV32 MYJV42 | 1.5 | 12.1 | 36.7 |
2.5 | 7.41 |
4 | 4.62 |
6 | 3.08 |
10 | 1.83 |
16 | 1.15 |
25 | 0.727 |
35 | 0.524 |
50 | 0.387 |
70 | 0.268 |
95 | 0.193 |
120 | 0.153 |
150 | 0.124 |
185 | 0.991 |
2、电缆其它主要技术性能 Other major technical performances矿用电力电缆
(型号Model:MKVV22、MKVV32、MKVV42、MKVV、MKVVR、MKVVP、MKVVP2、MKVVRP)
序 号 Serial number | 项目 Items | 技术性能 Technical performances |
1 | +20℃时导体直流电阻(≤Ω/Km) Conductor DC resistance at 20℃ | 见上表 See above table |
2 | +20℃时绝缘电阻的常数(≥MΩ·Km) Insulation resistance at 20℃ | 见上表 See above table |
3 | 5min工频交流电压试验 5min power frequency alternating current pressure test | 芯-芯 Core-Core 芯-铠装 Core-Armor | 3500V不击穿 3500V no breakdown |
4 | 4h交流高压试验 4h AC high voltage test | 2400V不击穿 2400V no breakdown |
5 | 单根垂直燃烧试验 Single wire burning test | MT386 |
6 | 成束燃烧试验 Group burning test | 符合GB/T18380.3标准中B类成束燃烧试验要求 Conforms to GB/T18380.3 standard B kind group burning test |