DJYP2VP2R
可采用任何一种方式敷设，更适于岩石地区的敷设。
在一定条件下，也可用于传输2048kbit/s以上的数字信号。
适用于市内、近郊及局部地区架空或管道敷设线路中，也可直埋。
索道通信电缆执行标准：YD/THYAC_索道电缆--索道通信电缆用途：HYAC-索道电缆--索道通信电缆适用于索道的通信线路，也适用于接入公用网上网专用网线路。
欧洲传统以来深信：在燃烧中产生的卤酸（HCL）释放量、气体腐蚀性、烟雾浓度及气体毒性是决定人们能否安全脱离火灾现场的主要因素。
为了评定线缆的阻燃性能优劣，国际电工委员会分别制定了IEC、IEC和IEC三个标准。
Product introduction - mine control cable MKVV mine control cable MKVVR mine control cable shielding control cable MKVV32 MKVVP mining mine control cable MKVVRP mine shielding control cable for mine control cable MKVV22 mine flame-retardant control cable for mine monitoring control cable for mine cable type MKVV, MKVV22, MKVV32, MKVVR, MKVVP, MKVVRP 1, mine control cable standards and specifications: MT818-1999-2, flame-retardant control cable for mine purposes: This product is suitable for the control and monitoring circuit with rated ac voltage u0/u of 450/750v or below and the connecting line of the protection circuit and the electrical instrument in the distribution device. 3. Model specifications and scope of mine control cable products: Model specifications of the control cable for mining use: MKVV,MKVVP, mkvvvvvvvvvvp2-10mm2,2-61 cores are applicable to the weak current control system or mkvvvv22 of the strong electromagnetic field interference area. MKVV20 0.5-10mm2,4-61 core mkvvv32, mkvvvvv30 0.5-10mm2,7-61 core MKVVR 0.5-6mm2,2-61 core MKVRP 0.5-4mm2,2-61 core mkvvvvvvp22, mkvp2-221.5-10mm2, 4-22 core mkvp2, 1.5-10mm2 Is mainly used for 500 kv substation and power distribution device and strong electromagnetic interference zone MKVV - 1, MKVV22 0.5 was 10-1, 4, 2-61 core features: coal mine with control cable conductor long-term allowed working temperature is 70 ℃, the cable temperature under installation should not below 0 ℃. Permissible bending radius of control cables used in coal mines: for cables with armored or copper band shielding structures, the bending radius should not be less than 12 times of the outer diameter of the cables. For soft cable with shield layer structure, it should be no less than 6 times the outer diameter of the cable. The cable without armor layer should not be less than 6 times the outer diameter of the cable.
电缆额定电压的选择●电缆的额定电压应适合于电缆系统的运行状况，用Uo/U（Um）KV表示。
Uo--电缆设计用的导体对地或金属屏蔽之间的额定工频电压；U--电缆设计用的导体间的额定工频电压；Um--设备可承受的“最高系统电压”的最大值。
万用表是可以用来测量电流的，用万用表测量电流的时候也是要分直流和交流的。
下面以胜利数字万用表分别说明：如果是维修电子电路板，大多是测量直流电流，大部分是低压，小电流为主。
如图。
先估算大概的电流，选好测量档。
黑表笔插COM，红表笔根据测量的大小，选择左边的mA小电流档最大200mA，左边的20A大电流档。
将要测量的电路回路中的某个点断开，将**表两表笔串联在电路中。
如果电流从黑表笔进，电表显示的是负数。
（2）在水平巷道或倾角45°以下的井巷内，应采用聚氯乙烯绝缘钢带或细钢丝铠装聚氯乙烯护套电力电缆、交联乙烯钢带或细钢丝铠装聚氯乙烯护套电力电缆。
（3）在进风斜井、井底车场及其附近、中央变电所至采区变电所之间，可以采用铝芯电缆；其他地点必须采用铜芯电缆。
HYA全塑市话电缆主要电气性能：1.直流电阻:20℃,0.4≤148Ω/km0.5≤95.0Ω/km0.6≤65.8Ω/km0.8≤36.6Ω/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。
Fully polyvinyl chloride distribution cable and local cable HJVV HJVVP HPVV local cable HCJVV? 1. Product implementation: gb11327-89. 2. Purpose: for short distance transmission. 3. Product model, specification and scope: HPVV 0.4-0.8mm 5-400 is applicable to the beginning and end of the line and is used to connect the local telephone cable to the distribution box or distribution frame. HJVV HJVVP 0.4-0.8 mmmm5 core -200 core is used to connect the distribution frame to the switch or the internal devices of the switch (including rural telephone service). 4, using features: cable laying temperature below 5 ℃. The bending radius of the cable shall not be less than 20 times of the outer diameter of the cable.
4、6、8、9、12、14、16、19、21、24、28、30、33、37、42、44、48、52、56、61PTYY聚乙烯绝缘聚乙烯护套铁路信号电缆PTY22聚乙烯绝缘钢带铠装聚氯乙烯外护套铁路信号电缆敷设在土壤、槽、管中，能承受较大的机械外力PTY23聚乙烯绝缘钢带铠装聚乙烯外护。
吉林省：长春、吉林市、白城、松原、四平、辽源、通化、白山。
江西省：南昌、九江、景德镇、鹰潭、新余、萍乡、赣州、上饶、抚州、宜春、吉安。
青海省：西宁、格尔木、德令哈。
广西壮族自治区：南宁、桂林、柳州、梧州、贵港、玉林、钦州、北海、防城港、崇左、百色、河池、来宾、贺州。
产品名称:HYA铜芯实芯聚烯绝缘挡潮层聚乙烯套市内通信电缆，生产标准:YD/T，结构特点:HYA型市内通信电缆采用全色谱绝缘，铝塑综合护套(即电缆的纵包屏蔽铝带与护套粘结成一体，形成密封护层)，具有电气性能优越，施工方便的特点；产品用途:HYA型市话电缆可用于城镇，近郊及厂矿的通信线路中。
INCP命令的意思不明白可以看下图所示变址寄存器FX系列有16个变址寄存器，V0~V7，Z0~Z7，在传送和比较指令中变址寄存器V和Z用来在程序执行过程中修改软元件的编号，循环程序需要使用的变址寄存器。
如下图所示上图中Z1的值为4，D6Z1相当于软元件D10（6+4）,V0的值为50，K100V0的意思就是相当于K150（100+50）。
当X12接通，常数50被送到V0,4被送到Z1，ADD指令完成运算K100V0+D6Z1的值并送到D7Z1中取。
Spin cassette XF5-273 communication cable transfer box, adopting advanced technology at home and abroad, in accordance with the international advanced standard production in the eighty s of cable wiring equipment, for the city, the town of telecommunication network backbone cable and wiring cable transfer. Features: 1. The connection jumper adopts rotary clamp-type connection and is sealed with silica gel on the metal clip, because it is not only reliable and durable, but also easy to operate and repair without stripping. 2. The wiring terminals in the handover box shall be arranged in 25 pairs as a basic unit, consistent with the basic units of the local telephone cables and marked with Numbers on the terminals to facilitate construction and maintenance. 3. The structure, arrangement and installation dimensions of the wiring modules are exactly the same as those of 3M products and can be used for each other. 4. The box body is treated by electrostatic spraying, beautiful and generous, with clear lines, good anti-corrosion and waterproof performance and long service life. Main technical parameters: the environment temperature: - 40 ℃ ~ + 65 ℃ atmospheric pressure: 70 ~ 106 kpa relative humidity: 95% or less is random ends and insulation resistance between terminals and ground > 5 x 104 Μ Ω. When connecting any two ends and any terminals and grounding to 1000V ac, there shall be no breakdown or flying arc in 1min. Contact resistance between wire and terminal < 5 x lO - 3 Ω.
●结构导线：铜线直径为、0．40、O．50、O．60、0．70、O．80、O．90mm。
绝缘材料：高密度聚乙烯。
绝缘单线：在导线上连续挤制绝缘材料，采用规定的10种标准色谱以便识别，并保证电缆的电气性能。
额定电压：U0/U为450/750V。
导体线芯长期工作温度为70℃、105℃两种，电缆敷设温度不低于0℃。
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，不低于电缆外径的6倍。
In order to evaluate the flame-retardant performance of wire cables, iec 60332-1, iec 60332-2 and iec 60332-3 were formulated respectively. Iec60332-1 and iec60332-2 are respectively used to evaluate the flame retardant capability of a single cable when it is laid on an incline and vertically (corresponding to GB12666.3 and GB12666.4 in China). Iec60332-3 (domestic equivalent to gb12666.5-90) is used to evaluate the flame retardant capability of beam cable when it is vertical, compared with that of beam cable when it is vertical.