（7）低压电缆不应采用铝芯，采区低压电缆严禁采用铝芯。
电缆截面的选择电缆截面的选择包括高压电缆截面的选择和低压电缆截面的选择，并以低压电缆截面的选择为主。
1.电缆主芯线的选择一般采区低压供电线路都比较长，在运行中电缆流过电流会产生压降而发热。
MVV聚氯乙烯绝缘聚氯乙烯护套矿用电力电缆用途：矿井中电能传输线路，但不能承受机械外力作用MVV22煤矿用聚氯乙烯绝缘钢带铠装聚氯乙烯护套电力电缆用途：矿井中电能传输线路，能承受一定机械外力MVV32煤矿用聚氯乙烯绝缘细钢丝铠装聚氯乙烯护套电力电缆用途：矿井中电能传输线路，能承受一定的拉力MVV42。
特性阻抗为120Ω的双绞屏蔽电缆广泛用于RS485/422、CANBUS等总线，该系列电缆规格很多，请提供电缆的敷设环境、通信速率、最大无中继传输距离等参数，我们将依照具体情况推荐最适当的产品。
ZR-YJV32ZR-YJLV32ZR-YJV33ZR-YJLV33ZR-YJV42ZR-YJLV42ZR-YJV43ZR-YJLV43交联聚乙烯绝缘阻燃聚氯乙烯/聚乙烯护套钢丝铠装动力电缆敷设在高落差地区，电缆能承受机械外力作用及相当的拉力。
The total shielding structure can adopt copper wire and copper band combination shielding, copper wire braid shielding, copper wire braid shielding, copper wire braid shielding, etc. The shielded cable of this structure can resist electromagnetic induction, poor grounding and power line, reduce inductance and prevent the induction electromotive force from being too large.
它对人机界面的要求也有一定的特殊性。
，在可靠性、节能、耐用度和结构紧凑性方面要求较高，对界面质量方面的要求和动态响应的能力则相对低一些。
普通的液晶显示屏在提供界面的能力方面，灵巧度及功耗等方面，至少目前是可以接受的。
作为界面上定位的鼠标，可靠性一般，似乎有些累赘。
于是我们对能在界面上直接用手指定位的“触摸屏技术”情有独钟。
因为它太符合我们人的本能和习惯了。
至于如何实现这种定位的功能，使用的是变电阻型还是变电容型，是压敏型还是红外型等，作为这项新功能的用户，可以“漠不关心”，坐享其成便是了。
屏蔽对与屏蔽对具有较好的绝缘性能，电缆在使用中若屏蔽对屏蔽对之间出现电位差时，不会影响信号的传输质量。
用于以电子计算机为主的自动控制系统,尤其适用于计算机集散控制系统,传递生产装置过程变量的检测、控制、联锁、报警等模拟和数字信号。
MHYBV型弯曲半径不小于电缆直径的10倍。
MHYVP型弯曲半径不小于电缆直径的10倍。
MHY32型弯曲半径不小于电缆直径的15倍。
本产品是阻燃类产品。
二、执行标准 MT818.《煤矿用阻燃通信电缆》及企业标准Q/JG。
Forlayingindoors、intunnel,cablefrench,wellordirectinground,abletobearexternalmechanicalforces,andcertainforce。
●电缆的推荐允许弯曲半径如下：无铠装电缆，应不低于电缆外径的6倍；铠装或铜带屏蔽电缆，应不低于电缆外径的12倍；屏蔽软电缆，就不低于电缆外径的6倍。
4、使用条件电缆使用环境温度为－40℃～+50；在25℃时湿度为95%；电缆敷设温度≥－10℃；电缆敷设时的弯曲半径MHYV≥10倍电缆外径，其余型号≥15倍电缆外径。
Precautions for installation of power cables: keep 2m distance when the cable is installed in parallel with the thermal pipe, and 0.5m should be maintained when crossing. The cable shall be installed at a distance of 0.5m in parallel or across other pipelines. When the cable is directly buried and installed, the buried depth of 1-35kv cable is not less than 0.7m. When 10KV and below cables are installed in parallel, the net distance between them shall not be less than 0.1m and 10-35kv shall not be less than 0.25m. The distance of cross installation is not less than 0.5m. Cable laying temperature is not lower than 0 ℃, bending radius: multi-core cable or 15 (D + D), a single cable 20 or more (D + D), (D for cable diameter, D) for the conductor diameter. 6 kv and above cable joint: (1) installing a cable terminal head, must be stripped semiconductor electric shielding layer, operation shall not damage the insulation, should avoid mark uneven situation, when necessary use sand paper to grind; The shield end should be flat and the graphite layer (carbon particles) should be cleaned. (2) plastic cable end copper tape screened and armor must be good grounding, the short circuit also follow this principle, avoid unbalanced three-phase run ShiGang armoured end produce inductive electromotive force, and even "lighter" and accidents such as burning sheath. It is required to use my tinplate to braid copper wire for grounding lead. When connecting with the cable copper belt, it should be welded with chromium-iron tin. The shield of three-phase copper tape should be connected with ground wire respectively. Note that the shielded ground wire and steel armor ground wire should be separately drawn out and insulated from each other. The position of the welded ground wire should be as low as possible. Basic re for cable terminals and intermediate joints: a. good conductor connection; B. The insulation is reliable, and it is recommended to use irradiated cross-linked heat-shrinkable silicone rubber insulation materials; C. good sealing; D. sufficient mechanical strength to meet various operating conditions. The end of the cable must be used to prevent erosion of water and other corrosive materials, so as to prevent breakdown due to the aging of the insulation layer caused by water trees. Crane or forklift should be used for the loading and unloading of cables. It is forbidden to run flat or lay flat. For installation of large cables, cable laying cart should be used to avoid external damage or abrasion caused by manual dragging. If the cable cannot be laid in time for some reason, it should be stored in a dry place to prevent sunlight from exploding and water entering the end of the cable. Note: the installation of wire and cable should be done by the installation personnel or full-time technical personnel familiar with the performance of wire and cable. If there are still unclear matters, please consult the relevant technical department or the technical department of our factory.
公司主营产品：电力电缆控制电缆计算机电缆电缆电线电线电缆我们专业从事电线电缆的生产及销售.我们的产品****,种类齐全,有各式电线电缆,国内订购均可配送.我们将以最优质的服务达到您的满意天津市电缆总厂第一分厂主要产品目录1、煤矿用通信电缆MHYV(1-10对)MHYAV(5-100对)MHYA对)M。
其他回路电路从楼下地板埋管铺设。
“上下结合”科学灵活地设计为农村别墅水电垫下了一个良好基础。
弱电设计：在有线、光纤、网络的基础上，增加考虑加上家庭火警报警烟感系统的弱电回路，和煤气泄漏报警。
毕竟消防安全大于天。
预防为主,防范于未然。
二：预埋施工程序：1:精准定位：用十字交叉法和对半取中心法画墨线后再订底盒。
按照图纸什么地方用一叉，二叉，三叉，四叉一一订紧底盒，在每个底盒里面放泡沫用胶布封闭，预防水泥浆堵塞。
KYJVRZR-KYJVR铜芯交联聚乙烯绝缘聚氯乙烯护套控制软电缆敷设在室内移动要求柔软等场合。
KYJVRPZR-KYJVRP铜芯交联聚乙烯绝缘聚氯乙烯护套编织屏蔽控制软电缆敷设在室内移动要求柔软屏蔽等场合。
ZA-RVV（ZRRVVZRVVRRVVZ）通信电源用阻燃软电缆ZA-RVV22（ZRRVV22ZRVVR22RVVZ22）通信电源用阻燃钢带铠装软电缆本产品是适用于通信局（站）及高层建筑等电源的输、配电系统中用的阻燃软电缆。
It is composed of different material conductors in metal sleeves with insulating materials, which are processed into a flexible solid assembly.
DJYJV(R)P2-22交联聚乙烯绝缘铜带绕包总屏聚氯乙烯护套钢带铠装计算机用屏蔽(软)电缆。
DJYJP2V(R)22交联聚乙烯绝缘铜带绕包分屏聚氯乙烯护套钢带铠装计算机用屏蔽(软)电缆。
DJYJP2V(R)P2-22交联聚乙烯绝缘铜带绕包分屏总屏聚氯乙烯护套钢带铠装计算机用屏蔽(软)电缆。