煤矿用电力电缆MYJV MVV

电缆结构示意图 iiiustration of cable structure

使用特性 service characteristics  

电缆导体的zui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zui高温度(持续时间≤5s)
short circuit electric cable conductor max. temperaturexlpe绝缘≤250℃， pvc绝缘≤160℃
xlpe insulation≤250℃pvc insulation≤160℃ 电缆的zui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 2times

电缆主要技术性能 major technical performances

1、 电缆导体直流电阻及绝缘电阻 cable conductor dc resistance and insulatedresistance

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 1.15 250.727 35 0.524 50 0.387 70 0.268 95 0.193 120 0.153 150 0.124 1850.991

2、电缆其它主要技术性能 other major technical performances

(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 35min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 burningtest