煤礦用阻燃通信電纜
Fire-retardant communication cable for coal mines
產(chǎn)品采用標準:
Standards implemented
MT818.14-1999
命名代號
Code names
煤礦用阻燃通信電纜Fire retardant communication cables for coal mines——MH
銅質(zhì)線芯Copper core——省略omitted
聚乙烯絕緣PE insulation)——Y
鋁一聚乙烯粘結(jié)護套.AI/PE binding layer sheath——A
聚乙烯內(nèi)護套PVC inner sheathed——省路omitted
編織鎧裝Weaved armor——B
聚氯乙烤護套PVC sheath——V
細圓鋼絲鎧裝,聚氯乙烯外護層Fine round steel wire armor and PVC outer sheath——32
產(chǎn)品表示方法
Expression
產(chǎn)品用型號、規(guī)格表示。如:
a)具有30個對絞線芯的煤礦用聚乙烯絕緣鋁一聚乙烯粘結(jié)護層鋼絲鎧裝聚氯乙烯護套通信電纜,表示為:MHYAz2 30×2
b)具有一個星絞線芯的煤礦用聚乙烯絕緣聚氯乙烯護套通信電纜,表示為:MHYV1×4
Madels and speciflcations are expressed as the following :
a)PEinsulated AI/PE biding layer inner protected steel wirearrmored PVC sheathed communication cable with 30 twwistedcored for coal mines is expressed as: MHYAs2 30×2
b)PE insulated PVC sheathed communication cables for coalmines with one twisted core is expressed as: MHYV1×4
電纜的使用特性
Service character istics
1、電纜導體的長期允許工作溫度-40~+50℃
2、月平均相對溫度≤95% (+25℃時)
3、電纜允許附設與安裝的溫度應不小于-10℃
4、電纜最小彎曲半徑MHYV、MHYJYV型電纜為電纜外徑的10倍,其他型號的電纜為外徑的15倍
1、Long-term service temperature of the cable conductor; -40~50℃
2、Maximumaverage relative humidity≤95% (( at+25℃)
3、Temperature in laying and installing cables shall not be lowerthan-100℃
4、Minmum bending radius:10time of the cable outer diameter forMHIYV; and 15 time for the rest