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z.ui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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