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产品用途:本产品适用于固定敷设在矿井作通信干线及分线箱与电话机连接线 Scope of application:This product is fit for being laid in fixed placed in mines for the connection of communication trunk lines and junction box and telephones. 执行标准 Standards implemented: Q/3210HL29-2003 |  |
型号、名称及使用范围 Model descriptions and Use scope
| 型 号 Model | 名 称 Descriptions | 使 用 范 围 Scope of application |
| MHVV(HUVV) | 煤矿用聚氯乙烯绝缘阻燃聚氯乙烯护套电话电缆 PVC insulated fire retardant PVC sheathed telephone cables for use in mines | 矿井中一般场合 General circumstances in mines |
| MHVVR(HUVVR) | 煤矿用聚氯乙烯绝缘阻燃聚氯乙烯护套软电话电缆 PVC insulated fire retardant PVC sheathed soft telephone cables for use in mines | 矿井中分线盒、分线箱与电话机连接的场合 Where connection between junction box and telephone is required in mines |
| MHVV22(HUVV22) | 煤矿用聚氯乙烯绝缘钢带铠装阻燃聚氯乙烯护套电话电缆 PVC insulated steel tape armored fire retardant PVC sheathed telephone cables for use in mines | 矿井中承受一定冲击力和压力的场合 Where cables are under some impact and pressure in the mine |
| MHVV32(HUVV32) | 煤矿用聚氯乙烯绝缘细圆钢丝铠装阻燃聚氯乙烯护套电话电缆 PVC insulated fine round steel wire armored fire retardant PVC sheathed telephone cables for use in mines | 矿井中垂直敷设或承受较大拉力的场合 Vertically laid or laid where the cables are under big impact and pull force in mines |
| MHYV(HUYV) | 煤矿用聚乙烯绝缘阻燃聚氯乙烯护套电话电缆 PE insulated fire retardant PVC sheathed telephone cables for use in mines | 矿井中一般场合 General circumstances in mines |
| MHYVR(HUYVR) | 煤矿用聚乙烯绝缘阻燃聚氯乙烯护套软电话电缆 PE insulated fire retardant PVC sheathed soft telephone cables for use in mines | 矿井中一般场合 General circumstances in mines |
| MHYV22(HUYV22) | 煤矿用聚乙烯绝缘钢带铠装阻燃聚氯乙烯护套电话电缆 PE insulated steel tape armored fire retardant PVC sheathed telephone cables for use in mines | 矿井中承受一定冲击力和压力的场合 Where cables are under some impact and pressure in the mine |
| MHYV32(HUYV32) | 煤矿用聚乙烯绝缘细圆钢丝铠装阻燃聚氯乙烯护套电话电缆 PE insulated fine round steel wire armored fire retardant PVC sheathed telephone cables for use in mines | 矿井中垂直敷设或承受较大拉力的场合 Vertically laid or laid where the cables are under big impact and pull force in mines |
电缆结构示意图
IIIustration of cable structure
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 | MHVV MHYV MHVVR MHYVR 型电缆为电缆外径的15倍，其它型号为外径的20倍 15 times of the cable outer diameter of MHVV MHYV MHVVR MHYVR and 20times for the rest |
电缆规格 Specifications
| 型 号 Model | 规 格 Specifications | 导体结构（根数/直径）mm Conductor structure(number/diameter) |
| MHYVR MHVVR | 1X2 | 1/0.28镀锡铜线 +6/0.28镀锡钢线 1/0.28 tinned copper wire +6/0.28 tinned steel wire |
| MHVV22 MHVV32 MHYV22 MHYV32 | 2X2-100X2 | 1/0.5; 1/0.8 |
| MHVV MHYV | 1X2-100X2 | 1/0.5; 1/0.8 |
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
| 型 号 Model | +20℃导体直流电阻（≤Ω/Km） DC resistance of conductor at 20℃ | 固有衰减（800Hz）≤db/Km Intrinsic attenuation |
| MHVVR MHYVR | 260 | 4.63 |
| MHVV22 MHVV32 MHYV22 MHYV32 MHVV MHYV | 95（0.5mm）; 36.7(0.8mm) | 1.32(0.5mm); 0.95(0.8mm) |
2、电缆其它技术性能 Other major technical performances
| 序 号 Serial number | 项 目 Items | 型 号Model:MHVV MHVVR MHVV22 MHVV32 | 型 号Model:MHYV MHYVR MHYV22 MHYV32 | |
| 1 | +20℃线芯导体直流电阻（Ω/Km） Line core DC resistance at 20℃ | 见上表 See above table | ||
| 2 | 电缆固有衰减（≤dm/Km） Cable intrinsic attenuation | 见上表 See above table | ||
| 3 | +20℃绝缘电阻（≥MΩ·Km） Insulating resistance at 20℃ | 110 ; 40(MHVVR) | 3000 ; 110(MHYVR) | |
| 4 | 1min工频交流电压试验 lmin power frequency alternating current pressure test | 芯-芯core - core 芯-铠装层core - armoring | 1000V不击穿 1000V no breakdown | 1500V不击穿 1500V no breakdown |
| 5 | 工作电容（≤μF/Km） Service capacity | 0.12 | 0.06 | |
| 6 | 单根垂直燃烧试验 Single wire burning test | MT386 | ||
| 7 | 成束燃烧试验 Group burning test | 符合GB/T 18380.3标准中B类成束试验要求 Conforms to GB/T18380.3 standard B types group test | ||
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