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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 |
名 称 Descriptions |
使 用 范 围 Use scope |
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MHYV |
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 |
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 |
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 |
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 |
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℃ |
| 电缆敷设温度 Cable laying temperature |
≥-10℃ |
| +25℃时环境相对湿度 Environment relative humidity at 25℃ |
≤95% |
| 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 |
规 格 Specifications |
导体结构(根/直径)mm Conductor structure(number/diameter) |
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MHYV |
1x2、2x2、1x4、5x2 |
7/0.28 |
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MHJYV |
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 |
5x2、10x2、20x2 |
1/0.8 |
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MHYAV |
20x2、30x2、50x2 | |
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MHYA32 |
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 |
20℃时导体直流电阻 DC resistance of conductor at 20℃ ≤Ω ( ， /km) |
固有衰减(800Hz) Intrinsic attenuation ≤( ,dB/km) |
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MHYV |
45 |
1.10 |
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MHJYV |
73 |
1.30 |
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MHYBV MHYAV MHYA32 |
36.7 |
0.95 |
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 |
项目 Items |
技术性能 Technical performances |
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1 |
+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 |
电缆固有衰减(≤dB/Km) Cable intrinsic attenuation |
见上表 See above table |
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3 |
+20℃绝缘电阻(≥MΩ Km) Insulating resistance at 20℃ | 3000 |
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4 |
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 |
远端串音衰减(≥dB/500) Far-end crosstalk attenuation |
70(800Hz) |
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6 |
电感(≤μH/Km) Inductance |
800(800Hz) |
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7 |
电缆工作电容(≤μF/Km) Cable service capacity |
0.06(800Hz) |
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8 |
工作对直流电阻差(≤%环阻) DC resistance difference |
2 |
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9 |
单根垂直燃烧试验 Combustion for single cable test |
MT386 |
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10 |
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 |
电缆结构示意图
IIIustration of cable structure
