煤矿用阻燃电力电缆产品用途:产品适用于煤矿井下额定电压0.6/1kv及以下输配电线路。
scope of application:the product is suitable in coal mine mineshaft rated voltage 0.6/1kv and below loses the distributionline
执行标准 standards implemented: mt 818-1999
煤矿用阻燃电力电缆型号名称及使用范围 model descriptions and usescope
型 号 model
名 称
descriptions
使 用 范 围
scope of application
mvv
煤矿用聚氯乙烯绝缘聚氯乙烯护套电力电缆
pvc insulated pvc sheathed power cables for use in mines矿井中电能传输线路但不能承受机械外力作用
energy transmission linebut not mechanical impact in minesmyjv
煤矿用交联聚乙烯绝缘聚氯乙烯护套电力电缆
xlpe insulated pvc sheathed power cables for use in mines矿井中电能传输线路但不能承受机械外力作用
energy transmission linebut not mechanical impact in minesmvv22
煤矿用聚氯乙烯绝缘钢带铠装聚氯乙烯护套电力电缆
pvc insulated steel tape armored pvc sheathed power cables for usein mines矿井中电能传输线路能承受一定机械外力
energy transmission linecan bearing mechanical impact in minesmvv32
煤矿用聚氯乙烯绝缘细钢丝铠装聚氯乙烯护套电力电缆
pvc insulated fine steel wire armored pvc sheathed power cables foruse in mines矿井中电能传输线路能承受一定的拉力
energy transmission linecan bearing some full in minesmyjv22
煤矿用交联聚乙烯绝缘钢带铠装聚氯乙烯护套电力电缆
xlpe insulated steel tape armored pvc sheathed power cables for usein mines矿井中电能传输线路能承受一定机械外力
energy transmission linecan bearing mechanical impact in minesmyjv32
煤矿用交联聚乙烯绝缘细钢丝铠装聚氯乙烯护套电力电缆
xlpe insulated fine steel wire armored pvc sheathed power cablesfor use in mines矿井中电能传输线路能承受一定的拉力
energy transmission linecan bearing some full in minesmyjv42
煤矿用交联聚乙烯绝缘粗钢丝铠装聚氯乙烯护套电力电缆
xlpe insulated coarse steel wire armored pvc sheathed power cablesfor use in mines矿井中电能传输线路能承受较大的拉力
energy transmission linecan bearing bear full in mines
注：xlpe绝缘比pvc绝缘具有绝缘强度高，抗老化，耐化学腐蚀及防水性能等优点
xlpe insulation strength the pvc insulation to behigher than the anti-aging bears merits and so on chemistrycorrosion and waterproof performance.
煤矿用阻燃电力电缆规格 specifications
型 号
model
芯 数
core number
额定电压(kv)
rated voltage
标称截面 mm2
nominal sectional
主线芯
master core
中性线芯(第四根芯)
neutrality core
mvv myjv
3
0.6/1
1.5-185
-
mvv22
2.5-185
myjv22
4-185
mvv32 myjv32 myjv42
4-185
mvv mvv22
3+1
0.6/1
4-185
2.5-95
4
4-185
煤矿用阻燃电力电缆结构示意图 iiiustration of cablestructure
煤矿用阻燃电力电缆使用特性 servicecharacteristics
电缆导体的高额定温度
electric cable conductor max. rated temperaturexlpe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. temperaturexlpe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 2times
煤矿用阻燃电力电缆主要技术性能 major technicalperformances
1、 煤矿用阻燃电力电缆导体直流电阻及绝缘电阻 cable conductor dcresistance and insulated resistance
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、煤矿用阻燃电力电缆其它主要技术性能 other majortechnical 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 table2
+20℃时绝缘电阻的常数(≥mΩ·km)
insulation resistance at 20℃见上表 see above table3
5min工频交流电压试验
5min power frequency alternating current pressure test芯-芯 core-core
芯-铠装 core-armor3500v不击穿 3500v no breakdown4
4h交流高压试验
4h ac high voltage test2400v不击穿 2400v no breakdown5
单根垂直燃烧试验
single wire burning testmt3866
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
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