電纜結構示意圖 IIIustration of cable structure礦用電力電纜
使用特性 Service characteristics 礦用電力電纜
電纜導體的*高額定溫度
Electric cable conductor Max. rated temperature
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XLPE絕緣90℃， PVC絕緣70℃
XLPE insulation90℃ PVC insulation70℃
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電纜敷設時的環境溫度
Cable laying environment temperature
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≥0℃
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短路時電纜導體的*高溫度(持續時間≤5S)
Short circuit electric cable conductor max. temperature
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XLPE絕緣≤250℃， PVC絕緣≤160℃
XLPE insulation≤250℃PVC insulation≤160℃
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電纜的*小彎曲半徑
Minimun bending radius
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為電纜彎曲試驗用圓柱直徑的2倍
Uses the column diameter for the electric cable bend test 2 times
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電纜主要技術性能 Major technical performances礦用電力電纜
1、 電纜導體直流電阻及絕緣電阻 Cable conductor DC resistance and insulated resistance礦用電力電纜
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型 號
Model
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標稱截面 (mm2)
nominal sectional
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+20℃導體直流電阻(≤Ω/Km)
DC resistance of the conductor at 20℃
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+20℃絕緣電阻常數(≥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、電纜其它主要技術性能 Other major technical performances礦用電力電纜
(型號Model:MKVV22、MKVV32、MKVV42、MKVV、MKVVR、MKVVP、MKVVP2、MKVVRP)
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序 號
Serial number
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項目 Items
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技術性能 Technical performances
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1
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+20℃時導體直流電阻(≤Ω/Km)
Conductor DC resistance at 20℃
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見上表 See above table
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2
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+20℃時絕緣電阻的常數(≥MΩ·Km)
Insulation resistance at 20℃
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見上表 See above table
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3
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5min工頻交流電壓試驗
5min power frequency alternating current pressure test
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芯-芯 Core-Core
芯-鎧裝 Core-Armor
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3500V不擊穿 3500V no breakdown
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4
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4h交流高壓試驗
4h AC high voltage test
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2400V不擊穿 2400V no breakdown
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5
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單根垂直燃燒試驗
Single wire burning test
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MT386
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6
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成束燃燒試驗
Group burning test
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符合GB/T18380.3標準中B類成束燃燒試驗要求
Conforms to GB/T18380.3 standard B kind group burning test
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