(3)敷设时电缆时的环境温度不低于0℃，电缆弯曲半径单芯电缆：无铠装电缆不小于电缆外径的20倍，铠装电缆不小于电缆外径的15倍：多芯电缆：无铠装电缆不小于电缆外径的15倍，铠装电缆不小于电缆外径的12倍。
直流电阻:20℃,0.4mm铜线,小于等于148Ω/km，0.5mm铜线,小于等于95Ω/km。2.绝缘电气强度：导体之间1min1kv不击穿导体与屏蔽1min3kv不击穿3.绝缘电阻：每根芯线与其余线芯接地，控制电缆大于10000MΩ.km,HYAT电缆大于3000MΩ.km。
煤矿用通信电缆……MH(HU)•铜质线芯……省略•聚乙稀绝缘……Y•铝—聚乙烯粘结护层……A•聚乙烯内护套……省略•钢丝编织铠装……B•蓝阻燃聚氯乙烯护套……V•钢丝铠装蓝阻燃聚氯乙烯外护套……32矿用阻燃通信电缆的详细介绍MHYV,MHJYV,MHYBV,MHYAV,MHYA32矿用阻燃通信电缆矿。
三、使用特性 1、电缆长期工作温度：-30~60℃ 2、电缆敷设温度： 不低于0℃3、MHYV型弯曲半径不小于电缆直径的10倍。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。
我们采用多股细绞和精绞成束细一级无氧铜丝作导体，符合DINVDE0295等级6，绝缘选用PVCT12符合DINVDE0281之第1部分，PVC护套TM2符合DINVDE0281之第1部分,并做特殊的结构设计、机械及电气电气性能计算和使用场合模拟试验。
配电柜接线完毕后及时清理柜内垃圾及杂物。9：外围人员拿到图纸后先确定传感器的位置及走线方向，根据现场位置布置线槽或者扎带扣，线槽内需安装扎带扣。10：安装固定传感器并套好号码管，有气管的地方顺着气管走，没有气管的地方贴着固定件走，不能悬空11：走线时尽量将线理顺，不要交叉，穿洞的需要安装保护套，有线槽的地方走线槽，没线槽的套波纹管或者缠绕带，12：按钮盒及hmi或者其他需要接线的元器件，如果材料没到货可以先将线放到位，并适当预留足够的长度且套上号码管。
DDZ-KVVP铜芯聚氯乙烯绝缘编织屏蔽低烟低卤护套阻燃控制电缆敷设在室内、电缆沟、管道等要求屏蔽的固定场合。DDZ-KVVP2铜芯聚氯乙烯绝缘铜带屏蔽低烟低卤护套阻燃控制电缆敷设在室内、电缆沟、管道等要求屏蔽的固定场合。
100对及以上线对的电缆加有1％的预备线对，但最多不超过6对。缆芯内的间隙用石油膏填充。缆芯包带：用聚脂薄膜带绕包。屏蔽：用轧纹(或不轧纹)金属带，金属带纵包于缆芯包带之外。护套：黑色低密度聚乙烯。也可提供双层护套的电缆。
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 direct buried depth of 1-35kv cable is 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 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. ? 6KV and above cable connector:? When installing the terminal head of the cable, the semiconductor electrical shielding layer must be stripped off. During operation, the insulation shall not be damaged. The shield end should be flat and the graphite layer (carbon particles) should be clean. (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 sheath and other accidents. 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 requirements 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 water and other corrosive materials from corroding, in order to prevent the water tree caused by the aging of the insulation layer and breakdown. 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 familiar with the performance of wire and cable installation personnel or full-time technical personnel, if there are still unclear matters, ball related technical department or technical department of our factory.
MHYV（PUYV）：聚乙烯绝缘聚氯乙烯护套煤矿用信号电缆用于矿场作普通信号传输，适用于固定敷设。MHYVRP：聚乙烯绝缘铜丝编织屏蔽聚氯乙烯护套煤矿用信号电缆，用于电场干扰较大的场所作信号传输，电缆较柔软。
矿用电缆防火性能分析防火机理分析阻燃机理在燃烧反应的热作用下，位于凝聚相的阻燃剂分解吸热，使凝聚相内温度上升减慢，延缓了材料的热分解速度；阻燃剂受热分解后，释放出连锁反应自由基阻断剂，使火焰、连锁反应的分支中断，减缓了气相反应速度；催化凝聚相热分解固相产物，焦化层或泡沫层的形成加强了这些层状硬壳阻碍。
VVZ;特点：交换机动力电缆传输专用电缆，具有柔软、易弯曲、阻燃等优点。VV-不阻燃，硬动力电缆，不易弯曲，适用于固定敷设。ZR-VV-阻燃，硬动力电缆，不易弯曲，适用于固定敷设。阻燃通信电缆用途：主要用于传输音频、150kHZ及以下的模拟信号和2048kbit/s及以下的数字信号。
之所把它称之为“水晶头”，是因为它的外表晶莹透亮的原因。水晶头适用于设备间或水平子系统的现场端接，外壳材料采用高密度聚乙烯。每条双绞线两头通过安装水晶头与网卡和交换机相连。A类B类水晶头制作方式我们一般有两种排线规则。一种是T568B，一种是T568A，大多数我们使用的都是B类接法。具体排线方法是：T568B：“橙白、橙、绿白、蓝、蓝白、绿、棕白、棕”；T568A：“绿白、绿、橙白、蓝、蓝白、橙、棕白、棕”。
每个单位都采用规定色谱的扎带绕带100对及以上电缆加有1%的备用线对，但最多不超过10对；8.缆芯包带：缆芯外包覆非吸湿性、非吸油性的绝缘带；9.电缆屏蔽：用轧纹(或不轧纹)双面涂塑铝带纵包于缆芯包带之外，两边搭接粘合；10.电缆护套：黑色低密度、中密度或高密度聚乙烯；11.识别标记：电缆外表面打印。
Conditions of use: cable using the environment temperature is to 40 ℃ ~ + 50; At 25 ℃ when the humidity is 95%; Cable laying temperature - 10 ℃ or higher; When laying the cable, the bending radius MHYV is 10 times of the cable outer diameter or 15 times of the cable outer diameter
HYA53 / HYAT53 rat bite/buried HYAT53 directly buried cables: mainly used for the transmission of audio, 15 duct | communication cable | (pipe/overhead) HYAC (overhead) HYAT (waterproof) 0 KHZ and analog signals and 2048 kbit/s and under the following digital signal. Under certain conditions, it can also be used to transmit digital signals over 2048kbit/s. Suitable for overhead or pipeline laying in city, suburb and local area, or directly buried.
High insulation resistance, good voltage resistance, low dielectric coefficient and low dielectric loss temperature and variation of the medium can not only meet the requirement of transmission performance, but also ensure the service life of the cable.