The mine communication cable has the characteristics of fire prevention, damp proof and so on. The reason of fire is mainly caused by overloading, short circuit, excessive resistance and external heat source. Under the fault conditions such as short circuit, local overheating and external heat, the insulation resistance of insulating materials decreases, the insulation capacity is lost, and even the fire is caused.
--铜芯、聚烯烃绝缘、聚氯乙烯护套市内通信电缆。
YVV聚氯乙烯绝缘、聚氯乙烯护套仪表用电缆固定敷设,用于仪器、仪表的连接。
YVVP聚氯乙烯绝缘、聚氯乙烯护套仪表用屏蔽电缆同上,用于要求抗干扰的情况下。
This product is suitable for connecting cables and electrical instrumentation and automatic control of the transmission line, it is compared with the ordinary plastic insulated control cables, insulation using fluorine plastic, product is higher than normal control cable temperature classification, oil resistance, waterproof, wear-resistant, resistant to corrosive gas, ageing resistance, best can, is mainly used in metallurgy, electric power, petrochemical and other industries with special re such as heat resistance.
规格:截面0.50.75mm2及以下2.5mm2以上A类78聚氯乙烯护氟塑料护套聚氯乙烯护氟塑料护套B类/0.219/。

二、电缆的型号、名称及使用范围型号名称使用范围ZR-DJYVP阻燃聚乙烯绝缘对绞组铜线编织总屏蔽阻燃聚氯乙烯护套计算机电缆固定敷设在室内、电缆沟或管道内ZR-DJYVP2阻燃聚乙烯绝缘对绞组铜带总屏蔽阻燃聚氯乙烯护套计算机电缆ZR-DJYVP3阻燃聚乙烯绝缘对绞铝塑复合带总屏蔽阻燃聚氯。
不少早期的辅助设计软件没有离线仿真功能,那就只能下载到PLC之后,再进行调试。
软件下载从软件设计用的个人计算机将完成的指令集下载到PLC中,可以在生产厂家提供的手册指导下进行,一般不会遇到什么困难。
只要选用正确的通信电缆,接到正确的端口,正确设定通信参数即可。
注意事项如下。
须设置软件密码,以保护知识产权。
不要随意设置,一定要事先做好记录,再输入1该密码。
否则可能会带来麻烦。
记下该软件的版本号。
一般,控制软件需要经过多次调试才能完成,其中可能需要反复修改。
KFVR氟塑料绝缘聚氯乙烯护套控制软电缆。
KFVRP氟塑料绝缘聚氯乙烯护套屏蔽控制软电缆。
KFV22氟塑料绝缘聚氯乙烯护套钢带铠装控制电缆。
KFVP22氟塑料绝缘聚氯乙烯护套钢带铠装屏蔽控制电缆。
MHYA32(PUYA32)煤矿用聚乙烯绝缘铝/聚乙烯粘结护层镀锌钢丝铠装阻燃聚氯乙烯护套通信电缆/0.81/1.0用于煤矿竖井和斜井作通信线。
2.使用特性1额定电压U0/U为300/500V及以下。
相关技术指标:参照IEC189和英国BS5308标准二、产品代号1、代号DJ-(系列代号)电子计算机用屏蔽电缆Y-(绝缘代号)高压聚乙烯F-(绝缘代号)氟塑料V-(护套代号)聚氯乙烯R-表示多股软线芯P-(屏蔽代号)铜网屏蔽P1镀锡铜网屏蔽P2铜带屏蔽P3铝塑复合膜屏蔽3、产品型号规格举例例1:订购。
电缆导体长期工作温度应不超过70℃。
普通护套的电缆在环境温度不低于-5℃下敷设,耐塞护套为-10℃。
弯曲半径不低于电缆外径的15倍(敷设时),且适用于任何水平差的干扰产品名称:通信电缆产品说明:通信电缆一、主要电缆型号及名称--铜芯、实芯聚烯烃绝缘、铝塑综合护套市内通信电缆。

成缆工序变频电缆要求结构对称,成缆时必须保证绝缘线芯张力均匀,使成缆后的线芯长度尽量保持一致,否则会引起结构变化,导致电容和电感的不均匀性,影响电缆的电气性能*1*名称:充油通信电缆*2*型号:HYAT、HYAT53、HYAT23、HYAT22(防水、地埋)*3*用途:实心绝缘填充型电缆适用于本地电。
所谓“隔氧层”和“隔火层”,只是实现电缆阻燃的一种手段,归根到底它还是一种阻燃电缆,其所能达到的最高阻燃级别也是A类。
不能把阻燃电缆叫做“隔氧层”电缆,而只能说“隔氧层”电缆是一种阻燃电缆。
不知从何时、何地开始兴起的,家庭装修水电改造环节,开始流行起“管道走顶”来了。
什么叫管道走顶呢?顾名思义,就是指水管和电管,一律从房顶敷设,不经过地面。
目前看来,管道走顶的做法大有完全替代传统走地的趋势。
但事实上,所谓的“管道走顶”或“走顶不走地”,只是装修行业的行业标准,国标中从来没有出现过类似规定。
那么,管道走顶和传统的地面走管,有什么区别呢?为什么会有人大肆宣扬管道走顶的做法呢?我们只要对两种管道敷设方式做一个简单的对比即可。
Identification and length marking: there is a sexual identification mark on the cable appearance, and the marking interval is not more than 1m.
Self-supporting full-plastic cable (HYAC) : self-supporting full-plastic cable has two kinds of concentric structure and calabash structure. The commonly used HYAC full-plastic cable is calabash structure. Wire: annealed bare copper wire with diameter of, 0.4, 0.5, 0.6, 0.7, 0.8 and 0.9; Color the insulation line according to the full chromatographic standard. A single insulated wire is twisted in pairs at different pitch to minimize crosstalk and a specified chromatographic combination is used to identify pairs of wires. Cable core: the cable core structure is based on 25 pairs of cables. More than 25 pairs of cables are assembled according to the unit. Each unit is wrapped with the unit of specified chromatogram to identify different units. More than 100 pairs of cables plus 1% of the reserve pair. Shielding: the shielding layer is made of corrugated metal tape which is wrapped vertically on the outside of the cable core wrap belt and firmly bonded on both sides. The metal strip of the shielding layer is coated with plastic film to facilitate bonding with the sheath to prevent corrosion of the shielding layer. Protective sleeve: protective sleeve is black low density polyethylene, can use double protective sleeve according to the need.