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FIRE-RETARDANT COMMUNICATION CABLES FOR COAL MINES
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产品用途:产品用于煤矿井下电话通信干线、配线和用户线路。
Scope of application:The product uses in the coal mine mine shaft telephone communication skeleton line, matches the line and the subscriber's loop
执行标准 Standards implemented:MT 81814-1999
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型号、名称及使用范围
Model、Descriptions and Use scope
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型号
Model
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名 称
Descriptions
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使 用 范 围
Use scope
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MHYV
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煤矿用聚乙烯绝缘聚氯乙烯护套通信电缆
PE insulated PVC sheathed communication cables for coal mines |
用于平巷、斜巷及机电硐室
Served in level,slanted channels and power house |
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MHJYV
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煤矿用加强型线芯聚乙烯绝缘聚氯乙烯护套通信电缆
Reinforced core PE insulated PVC sheathed communication cables for coal mines |
用于机械损伤较高的平巷和斜巷
Served in level and slanted channels where mechanical damage is frequent |
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MHYBV
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煤矿用聚乙烯绝缘镀锌钢丝编织铠装聚氯乙烯护套通信电缆
PE insulated galvanized steel wire weave armored PVC sheathed communication cables for coal mines |
用于机械冲击较高的平巷和斜巷
Served in level and slanted channels where mechanical damage is frequent |
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MHYAV
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煤矿用聚乙烯绝缘铝-聚乙烯粘护层聚氯乙烯护套通信电缆
PE insulated Al/PE binding layer PVC sheathed communication cables for coal mines |
用于较潮湿的斜井和平巷
Served in level and slanted channels with high humidity |
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MHYA32
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煤矿用聚乙烯绝缘铝-聚乙烯粘结护层钢丝铠装聚氯乙烯护套通信电缆
PE insulated Al/PE binding layer steel wire armored PVC sheathed communication cables for coal mines |
用于竖井或斜井
Served in shaft and slanted shaft |
使用特性 Service characteristics
| 电缆长期允许工作温度 Long-term service temperature of the cable conductor |
-40℃-+50℃
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| 电缆敷设温度 Cable laying temperature |
≥-10℃
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+25℃时环境相对湿度
Environment relative humidity at 25℃ |
≤95%
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| 电缆的最小弯曲半径 Minimun bending radius |
MHYV及MHJYV型电缆为电缆外径的10倍，其它型号为外径的15倍 10 times of the cable outer diameter of MHJYV, and 15times for the rest |
电缆规格 Specifications
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型 号
Model
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规 格
Specifications
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导体结构(根/直径)mm
Conductor structure(number/diameter)
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MHYV
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1x2、2x2、1x4、5x2 |
7/0.28
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MHJYV
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1x2、2x2 |
4/0.28铜线+3/0.28钢线 4/0.28
copper wire +3/0.28 steel wire
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MHYBV
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5x2、10x2、20x2 |
1/0.8
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MHYAV
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20x2、30x2、50x2 |
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MHYA32
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30x2、50x2、80x2 |
电缆主要技术性能 Major technical performances
1、电缆导体直流电阻及固有衰减 DC resistance of the conductor and Intrinsic attenuation
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型 号
Model
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20℃时导体直流电阻
DC resistance of conductor at 20℃
≤Ω ( ， /km)
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固有衰减(800Hz)
Intrinsic attenuation
≤( ,dB/km)
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MHYV
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45
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1.10
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MHJYV
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73
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1.30
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MHYBV MHYAV MHYA32
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36.7
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0.95
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2、电缆其它主要技术性能 Other major technical performances
( MHYV、MHJYV、MHYBV MHYAV、MHYA32)
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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℃线芯直流电阻(≤Ω/Km)
Line core DC resistance at 20℃ |
见上表 See above table |
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2
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电缆固有衰减(≤dB/Km)
Cable intrinsic attenuation |
见上表 See above table |
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3
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+20℃绝缘电阻(≥MΩ Km) Insulating resistance at 20℃ |
3000 |
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4
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lmin工频交流电压试验
lmin power frequency alternating current pressure test |
1500V不击穿(50Hz)
1500V Does not penetrate |
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5
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远端串音衰减(≥dB/500)
Far-end crosstalk attenuation |
70(800Hz) |
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6
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电感(≤μH/Km)
Inductance |
800(800Hz) |
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7
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电缆工作电容(≤μF/Km)
Cable service capacity |
0.06(800Hz) |
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8
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工作对直流电阻差(≤%环阻)
DC resistance difference |
2 |
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9
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单根垂直燃烧试验
Combustion for single cable test |
MT386 |
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10
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成束燃烧试验
Combustion for bunched cable test |
符合GB/T18380标准中B类成束燃烧试验要求
Conforms to GB/T18380 standard B kind becomes ties the burning test |
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