供应煤矿用阻燃通信电缆mhyv(puyv)

产品用于煤矿井下电话通信干线、配线和用户线路。电缆规格specifications型号model规格specifications导体结构(根/直径)mmconductorstructure(number/diameter)mhyv1x2、2x2、1x4、5x27/0.28mhjyv1x2、2x24/0.28铜线+3/0.28钢线4/0.28copperwire+3/0.28steelwiremhybv5x2、10x2、20x21/0.8mhyav20x2、30x2、50x2mhya3230x2、50x2、80x2电缆主要技术性能majortechnicalperformances1、电缆导体直流电阻及固有衰减dcresistanceoftheconductorandintrinsicattenuation型号model20℃时导体直流电阻dcresistanceofconductorat20℃≤ω(，/km)固有衰减(800hz)intrinsicattenuation≤(,db/km)mhyv451.10mhjyv731.30mhybvmhyavmhya3236.70.952、电缆其它主要技术性能othermajortechnicalperformances(mhyv、mhjyv、mhybvmhyav、mhya32)序号serialnumber项目items技术性能technicalperformances1+20℃线芯直流电阻(≤ω/km)linecoredcresistanceat20℃见上表seeabovetable2电缆固有衰减(≤db/km)cableintrinsicattenuation见上表seeabovetable3+20℃绝缘电阻(≥mωkm)insulatingresistanceat20℃30004lmin工频交流电压试验lminpowerfrequencyalternatingcurrentpressuretest1500v不击穿(50hz)1500vdoesnotpenetrate5远端串音衰减(≥db/500)far-endcrosstalkattenuation70(800hz)6电感(≤μh/km)inductance800(800hz)7电缆工作电容(≤μf/km)cableservicecapacity0.06(800hz)8工作对直流电阻差(≤%环阻)dcresistancedifference29单根垂直燃烧试验combustionforsinglecabletestmt38610成束燃烧试验combustionforbunchedcabletest符合gb/t18380标准中b类成束燃烧试验要求conformstogb/t18380standardbkindbecomestiestheburningtest