电缆结构示意图 IIIustration of cable structure矿用电力电缆
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 (mm
2)
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 |
