煤矿用阻燃通信电缆(一)Mining Flame Retardant Communication Cable(1)

一、执行标准

MT81814-1999

Executive Standard

MT818.14-1999

电线电缆型号规格见表1)Models and specification ofcables and wires(see table 1)

表1 table 1

煤矿用阻燃通信电缆 Fire retardantcommunication cables for coal mines...........................................MH

铜质线芯 Copper core...........................................................................................................................省略omitted

聚乙烯绝缘 PEinsulation.............................................................................................................................................Y

铝-聚乙烯粘结护层AI/PE binding layer sheath...................................................................................................A

编织铠装Weavedarmor...............................................................................................................................................B

聚氯乙烯护套 PVCsheath...........................................................................................................................................V

细圆钢丝铠装、聚氯乙烯外被层Fine roundsteelwire armorandPVC outersheath.................................32

钢铜加强线芯Steelstrengthen copper wire core................................................................................................J

三、产品表示方法Expression

产品用型号、规格表示。

如:1.具有30个对绞线芯的煤矿用聚乙烯绝缘铝一聚乙烯粘结护层钢丝铠装聚氯乙烯护套通信电缆，表示为:MHYA32 30x2

Models and specifications are expressed as the following:

1、PEinsulated Al/PE biding laver inner protected steel wirearmored PVC sheathed communication cable with 30twisted cores for coal mines is expressed as MHYA32 30x2

2、具有1个星绞线芯的煤矿用聚乙烯绝缘聚氯乙烯护套通信电缆，表示为:MHYV 1x4

2、PEinsulated PVC sheathed communication cable for coal mines with one twisted core is expressed as MHYV 1x4

四、产品结构简图 Illustration of product structure

五、产品结构尺寸及参数(见表3)Productstructure,size and parameters(see table3)

六、主要技术性能及指标 Majortechnicalperformances and parameters

七、电缆的使用特性Service characteristics

1、电缆导体的长期允许工作温度-40~+50℃:

1，Long-term service temperature of the cable conductor:-40~+50℃

2、月平均最大相对湿度为≤95%(+25℃时);

2、Maximum average relative humiditys95%(at+25℃)

3、电缆允许附设与安装的温度应不大于-10℃;

3、Temperature for laying and installing cables shall not be higher than- 10℃

4、电缆最小弯曲半径:MHYV、MHJYV型电缆为电缆外径的10倍，其它型号的电缆为外径的15倍

4、Minimum bending radius: 10 times of the cable outer diameter forMHJYV:and 15 times for the rest