在缆芯中和屏蔽层的内外表面用石油膏填充或浇注处理，以防止煤矿中水分侵入。在煤矿常见的30~C一60~C的环境条件下，煤矿用通信电缆的机械和电气性能保持不变。用于平巷、斜巷及机电硐室做通信线以及用于平巷，竖井或斜井作主信号传输。

　　绝缘:根据不同型号可采用阻燃聚乙烯、聚氯乙烯、聚乙烯三种中的一种.绝缘表面应光滑平整,厚度应均匀,最小厚度为0.4毫米.线对:可分为以下4种护套:聚氯乙烯护套材料的性能要求应符合GB8815的规定,平行室内线护套的横截面挤成扁圆形,绞合室内线的护套横截面挤成圆形.护套应完整连续,无缺陷表面光滑平整,。

　　?kvv?2芯*0.75控制电缆?kvv?2芯*1.0控制电缆?kvv?2芯*1.5控制电缆?kvv?3芯*0.75控制电缆?kvv?4芯*0.75控制电缆?kvv?5芯*0.75控制电缆?kvv?6芯*0.75控制电缆?kvv?7芯*0.75控制电缆?kvv?8芯*0.75控制电缆?kvv?10芯。

　　Copper core, polyolefin insulation and polyvinyl chloride sheathed Municipal Communication cables. The operating temperature ranges from - 30 degrees to 60 degrees. HYA communication cable, HYA22HYA23 armoured communication cable. Purpose: Solid insulated filling cable is suitable for urban and township telecommunication lines of local telecommunication network, and also for private network lines accessing public network.

　　另供:ZR-RVV、RVVP、RVP、ZR-RVS、多股阻燃电源线ZA-RVV     RVVZZRRVVZRVVR多股阻燃软电缆3X10 13X16 1 3XX35 13X50 1 3XXXXX150 3X。

　　3、技术指标:性能项目单位指标工作电容PF/m≤90电容不平衡PF/m≤1电感/电阻uH/Q≤25屏蔽抑制系数≤0.0120度时绝缘电阻≥5000试验电压V/1min2000阻燃特性（按照GB12666.5-90试验）A类4,产品型号及名称型产品名称ZR-DJYP。

　　④在空气中敷设a.单芯电缆平行敷设时的中心距离:185mm2及以下电缆直径的2倍:240mm2及以上为周围环境温度:30℃c.不同环境温度下载流量的校正系数:环境温度（℃校正系数1.121.061.000.940.870.79⑤直埋敷设a。

　　Radio frequency cables are classified according to insulation type (1) Entity insulated cables are filled with entity high frequency dielectrics between the inner and outer conductors of such cables. Most soft coaxial radio frequency cables adopt this insulation type. (2) In the insulation layer of air-insulated cable, most of the volume is air except for a part of solid medium supporting the inner and outer conductors.

　　MHYVR矿用聚乙烯绝缘、阻燃聚氯乙烯护套信号软电缆/0.30。

　　ia-K3YV（EX）本安型PE绝缘PVC护套三芯绞合屏蔽仪用电缆固定敷设在室内、电缆沟或管道中。