矿用通信电缆 fire retardant control cables in mines
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产品用途:产品用于煤矿井下通信干线、配线和用户线路。 | scope of application:the product uses in the coal mine mine shaft ephone communication skeleton line, matches the line and the subscriber"s loop | 执行标准 standards implemented:mt 818-1999 | 型号、名称及使用范围 | model、desc-riptions and use scope | | |
型号 model | 名称 desc-riptions | 使用范围 use scope | 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 | 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 | 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 | 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 | 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*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zui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 |
型号 model | 规格 specifications | 导体结构(根/直径)mm conductor structure(number/diameter) | mhyv | 1x2、2x2、1x4、5x2 | 7/0.28 | mhjyv | 1x2、2x2 | 4/0.28铜线+3/0.28钢线 4/0.28 copper wire +3/0.28 steel wire | mhybv | 5x2、10x2、20x2 | 1/0.8 | mhyav | 20x2、30x2、50x2 | mhya32 | 30x2、50x2、80x2 | |
电缆主要技术性能 major technical performances |
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) | mhyv | 45 | 1.10 | mhjyv | 73 | 1.30 | 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) |
序号 serial number | 项目 items | 技术性能 technical performances | 1 | +20℃线芯直流电阻(≤ω/km) line core dc resistance at 20℃ | 见上表 see above table | 2 | 电缆固有衰减(≤db/km) cable intrinsic attenuation | 见上表 see above table | 3 | +20℃绝缘电阻(≥mω km) insulating resistance at 20℃ | 3000 | 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 | 5 | 远端串音衰减(≥db/500) far-end crosstalk attenuation | 70(800hz) | 6 | 电感(≤μh/km) inductance | 800(800hz) | 7 | 电缆工作电容(≤μf/km) cable service capacity | 0.06(800hz) | 8 | 工作对直流电阻差(≤%环阻) dc resistance difference | 2 | 9 | 单根垂直燃烧试验 combustion for single cable test | mt386 | 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 | |
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