HYA25对0.5通信电缆武冈流程化大对数通讯电缆HYV素雅
F46耐高温耐油特种电缆耐高温-耐油-防腐蚀控制电缆ZR-KFFRKFFRPKFFR22KFFR32-200—260度的详细介绍高温屏蔽软电缆-高温软电缆耐高温-耐油-防腐蚀控制电缆ZR-KFFRKFFRPKFFR22KFFR32-200—260度ZR-DJFFP ZR-DJFPFZR-DJFPFP。
标准的2线对RS-485通讯电缆，特性阻抗120欧姆，导体为2线对4芯(2x2x24AWG)多股绞合镀锡铜丝，PE绝缘护套；为适用于复杂的工业噪声环境，特采用铝箔/聚酯复合带****率+镀锡铜编制网90%率共双重，并附有独立TC接地导体，工业灰色PVC外护套，符合ULAWM2919文件规范。
Purpose of HYAT solid insulated filled cable: solid insulated filled cable is suitable for the urban telecommunication line of the local telecommunication network in the town of wuyu, and also for the special network line connecting to the public network. Mainly used for pipeline laying. The inner and outer surfaces of the cable core and the shield layer are filled with oil paste and poured to prevent water intrusion. The mechanical and electrical properties of the cable remain unchanged under conditions of 30~C - 60~C. Structure: wire: annealed bare copper wire, copper wire diameter 0. 32, 0. 40, 0. 50, 0. 60, 0. 70, 0. 80, 0. 90 (mm). Insulating material: high density polypropylene or polypropylene, colour of the insulated wire as indicated by full chromatograph. Pair of insulated wires: twist two different colored insulated wires into pairs at different pitch and use the specified chromatographic combination to identify pairs. Core structure: with 25 pairs as the basic unit, more than 25 pairs of cables are assembled according to the unit, each unit is wired with the unit of specified chromatogram to identify different units. 100 pairs of cables with more than one pair of cables plus 1% of the reserve pair, but not more than 6 pairs. The gap in the core is filled with oil paste. Core tape: wrap with a polygrease film tape. Shielding: metal strip with or without striping, which is longitudinal wrapped outside the core of the cable. Sheath: black low density polymer. Double sheathed cables can also be provided. Identification and marking: cable outer surface sexual identification mark, mark at no more than alternate 1 m intervals, tag contents are: the diameter of wire, line number, cable type, factory name and year of manufacture, marking at no more than alternate 1 m intervals to mark on the surface, but with the tag stagger. Other structures: according to the needs of users, we can provide armored cables HYAT53, HYAT55 and high frequency isolation cables YATG with strengthened mechanical protection layer.
Dense places; In places with high safety re for dense cables or closed channels, automatic fire detection and alarm devices suitable for reliable operation of the environment should be e The oil supply system of open oil charging cable should be e with automatic fire alarm and lock device which can reflect the state of oil spraying. Places with high safety re, such as dense cable parts of underground public facilities, terminal setting of multi-return oil-filled cables and other places, can be e with special fire fighting facilities such as water spray extinguishing.
MHY32(PUYV39、PUYV39-1) 矿用聚乙烯绝缘阻燃聚氯乙烯护套单层钢丝铠装井筒信号电缆 用于斜井或竖井中作主信号电缆MHYVRP(PUYVRP) 矿用聚乙烯绝缘阻燃聚氯乙烯护套铜丝编织屏蔽信号软电缆 用于井下平巷或斜巷作信号电缆MHYVP(PUYVP) 矿用聚乙烯绝缘。
S7-200虽然应用广泛，但毕竟是落在时代背后一大截了。基础篇，流行的教材中以廖常初的最为流行和通顺，正好他也是主要教西门子系列的（不确定是不是有1200系列的教材，我猜应该是有的。至少他的200和300系列的书都不错）。要了解PLC的基本结构，但是不要在这方面太过执着，适可而止的了解，或者说是基本了解、一知半解即可。在以后的应用中有足够时间可以深入了解；深入了解LAD梯形图的画法，对基本概念比如线圈、节点、计数器、定时器、移位、比较、计算、上升沿下降沿等等，务必要熟练掌握；对于其他类型的编程语言，如果有可能，**能学习了解一下，比如STL或者FBD，这些并不是华而不实的炫技，而是一方面能加深对PLC的理解，第二能方便快速实现某些功能，第三能够很好的与**文本语言相辅相成互相促进。
屏蔽带表面涂敷的塑料薄膜与护层粘接自称是电缆护套：黑色低密度聚乙烯。自承式电缆吊线：吊线为7股镀锌钢纹线，标称外径为6.3mm和4.75mm两种，其抗张强度分别不小于3000kg和1800kg，吊线用热塑性涂料涂敷，以防钢丝锈蚀。
但是，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。因此，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。
Flame retardant signal cable for coal mine: MHYVR MHYBV MHYV32 MHYVR MHYVP MHYBV MHYVR32
10KV及以下电缆平行安装时，相互净距不小于0.1m，10-35KV不小于0.25m；交叉安装时距离不小于0.5m。电缆敷设温度不低于0℃，弯曲半径：多芯电缆≥15(D+d)，单芯电缆≥20(D+d)，（D为电缆外径，d为导体外径）。
二、产品执行标准企业标准等效采用英国BS5308标准三、使用特性1．交流额定电压U0/U：300/500V2．电缆最高工作温度：聚乙烯绝缘70℃交联聚乙烯绝缘90℃无卤低烟阻燃聚烯烃70℃无卤低烟阻燃交联聚烯烃90℃和125℃两种3．最低环境温度：固定敷设-40℃；非固定敷设-15℃4．安装敷设温度。
生产规格：对数5对—3600对导体直径为：0.4、0.5、0.6、0.7、0.8（mm）电缆对数型号（0.4）型号（0.5）型号（0.6）5对HYA5x2x0.4HYA5x2x0.5HYA5x2x0.610对HYA10x2x0.4HYA10x2x0.5HYA10x2x0.620对。
作为学习者，问人可能更方便点，但一直这样是培养不出解决问题的能力的。有些单片机初学者觉得看例程不好，觉得就等于看答案一样有罪恶感。其实对初学者来说，看例程理解例程再看例程的注解是**的学习途径。做实验做课程设计做参赛作品的时候也是可以移植程序的，不需要自己重新实现。(当然老师布置的作业还是独立完成好)要清楚，移植程序不等于学习单片机，最重要的是知道例程是怎样的框架及实现方法。初始化了哪些寄存器，做了哪些引脚配置，调用了哪些函数，那些函数又是怎么实现的，设置了哪些中断，用到了哪些片上资源(UART、ADC等)，查询了哪些状态，如果状态变化(触发事件)又会做些什么等等。
本补偿导线一般用聚氯乙烯绝缘和护套补偿导线或电缆具有优良的防潮、耐磨及阻燃特性；耐高温氟塑料绝缘和护套补偿导线或电缆采用连续挤出工艺，更有耐高温、耐寒、耐酸碱油水、不延燃、抗老化等优越性，产品质量高于国标GB/T等效采用IEC584-3)的规定。
Low smoke halogen free power cable is suitable for transmission power in power lines with rated voltage of 0.6/1kv and below. The low-smoke halogen free cable is produced by our company according to the French RCCE and NF series, GB/T18380, GB/T19216, GB/T17651, GB/T17650 and so on.
（配线用）HJVV、HJVVP、HPVV通信电缆介绍：用于配线架至交换机或交换机内部各级机器间连接等（包括农村局用），线路的始端和终端，供连接市内电缆至分线箱或配线架之用，内导体线径（mm）：0.40、0.50、0.60、0.70、0.80、0.90对数（对）：5—1000HPVV低频通信配。
代号、名称及含义项目代号含义系列代号DLDWLDK低烟低卤低烟无卤控制电缆绝缘材料VJEF聚氯乙烯交联聚烯烃丁腈热塑体护套材料VGS聚氯乙烯热固性护套热塑性护套屏蔽材料PP2铜网或镀锡铜网铜带/塑复合带铠装材料2232钢带细钢丝导体种类ABR独股导体7股绞合导体多股绞合导体生产范围截面(mm2)：0。