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
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XLPE绝缘90℃， PVC绝缘70℃
XLPE insulation90℃ PVC insulation70℃
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电缆敷设时的环境温度
Cable laying environment temperature
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≥0℃
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短路时电缆导体的*高温度(持续时间≤5S)
Short circuit electric cable conductor max. temperature
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XLPE绝缘≤250℃， PVC绝缘≤160℃
XLPE insulation≤250℃PVC insulation≤160℃
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电缆的*小弯曲半径
Minimun bending radius
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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
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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
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型 号
Model
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标称截面 (mm2)
nominal sectional
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+20℃导体直流电阻(≤Ω/Km)
DC resistance of the conductor at 20℃
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+20℃绝缘电阻常数(≥MΩ.Km)
Insulation resistance at 20℃
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MVV MVV22
MVV32 MYJV
MYV22 MYJV32
MYJV42
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1.5
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12.1
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36.7
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2.5
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7.41
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4
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4.62
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6
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3.08
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10
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1.83
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16
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1.15
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25
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0.727
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35
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0.524
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50
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0.387
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70
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0.268
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95
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0.193
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120
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0.153
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150
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0.124
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185
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0.991
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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)
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序 号
Serial number
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项目 Items
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技术性能 Technical performances
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1
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+20℃时导体直流电阻(≤Ω/Km)
Conductor DC resistance at 20℃
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见上表 See above table
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2
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+20℃时绝缘电阻的常数(≥MΩ·Km)
Insulation resistance at 20℃
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见上表 See above table
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3
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5min工频交流电压试验
5min power frequency alternating current pressure test
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芯-芯 Core-Core
芯-铠装 Core-Armor
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3500V不击穿 3500V no breakdown
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4
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4h交流高压试验
4h AC high voltage test
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2400V不击穿 2400V no breakdown
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5
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单根垂直燃烧试验
Single wire burning test
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MT386
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6
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成束燃烧试验
Group burning test
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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
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