3、矿用控制电缆产品型号规格及范围： 矿用控制电缆型号 规格范围 使用场合MKVV,MKVVP,MKVVP2 0.5-10mm2,2-61芯 适用于弱电控制系统或强电磁场干扰区MKVV22,MKVV20 0.5-10mm2,4-61芯 MKVV32,MKVV30 0.5-10mm2,7-61芯 M。
我公司长年供应：WDZA-DJYYP-23ZRC-DJVPV、ZRC-DJVPVP、ZRC-DJVVP、ZRC-DJVP2V、ZRC-DJVP2VP2、ZRC-DJVVP2、ZRC-DJVP3V、ZRC-DJVP3VP3、ZRC-DJVVP3、ZRC-DJVPVR、ZRC-DJVPVPR、ZRC-。
执行标准GBQ/WTL使用特性1.电缆额定电压UO/U:450/750V，交流聚烯烃UO/U为0.6/1KV2.电缆长期工作温度为：-20℃－90℃，-40℃－105℃3.推荐弯曲半径：无铠装电缆应不小于电缆外径的6倍，有铠装或铜带屏蔽结构的电缆应不小于电缆外径的12倍。
The low-smoke halogen free cable is produced by the company in accordance with the French RCCE and NF series standards, GB/T18380, GB/T19216, GB/T17651, GB/T17650 and international standards.
3. Use features
以上的比较仅仅是小型机，至于西门子的300和400系列以及更大型的TDC系列，这里就无需多言了。
学PLC，三菱是很容易上手的，因为直来直去思路简单，但从学习的角度讲，肯定是西门子更好。
个人认为对于初学者学习西门子相对会更好上手一些，特别是基础差的初学者三菱的学习要不容易入门，西门子编程软件人性化。
2芯片不同这主要体现在容量和运算速度上。
西门子CPU226的程序容量20K，数据容量14K；而三菱FX2N总共才8K，后来的3U倒是有所改进。
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 e, 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.
6、有屏蔽结构的软电缆，应不小于电缆外径的6倍。
多股线（AVVR）AVVR多芯信号线、AVVR多芯安装线AV AVR AVRB AVRS AVVR BV BLV音响线。
安防工程、监控工程、弱电系统工程、综合布线、银行监控工程、网络工程、音响工程、消防工程、远程三表抄送、楼宇防盗监控、门禁可视对讲等专用、音视频信号电线电缆。
RS485 cable product description: the characteristic impedance of 100 ohms, conductor is 2 * 2 * 24 awg multi-strand tin electrolytic copper wire twisted and become, insulating sheath like installation of design and color recognition, aluminum foil/polyester with total shielding, additional stranded tinned copper wire grounding conductor, industrial gray PVC outer sheath, 1 of the RS - 485 communication cable, the characteristic impedance of 120 ohms, conductor is 2 * 24 awg stranded tinned copper wire, PE insulation, covered with aluminum foil/polyester composite with + 90% tin plated copper wire this double shielding, comes with a grounding conductor is RS - 485 communication cable.
下面介绍电缆的选型和电缆截面的选择方法。
电缆型号的选择电缆型号的选择，与供电的可靠性、安全性及是否经济合理有很大的关系。
《煤矿安全规程》第四百六十七条对电缆的选用制定了如下选择要求：1.电缆实际敷设地点的水平差应与规定的电缆允许敷设水平差相适应。
如:NHA-KVV即为A类耐火控制电缆四、技术参数的要求性能项目单位技术指标20℃时导体直流电阻≤Ω/km见聚氯乙烯绝缘及护套控制电缆中表3试验电压(5min)Kv3绝缘电阻≥MΩ.km1000耐火特性GB12666.6A或B类阻燃特性A或B类(按GB12666.5成束电缆燃。
2、产品标准：GB5023.5-86《额定电压450/750V及以下聚氯乙烯绝缘电缆（电线）屏蔽电线》3、使用特性：1）额定电压U0/U为300/300V；2）电缆的长期允许工作温度：AVP-105、RVP-105型……应不超过105℃；其他型号……应不超过70℃4、型号、名称和使用范围型号名称。
在MCU中都是以二进制的形式进行计算的.2.在编程时，我们通常用到的有十进制的数值形式和十六进制的数值形式，如52,0xfe；3.数值的大小由数据的类型来决定。
常用的有“unsignedint”和“unsignedchar”."unsignedchar"的范围是"0-255",与单片机端口的8位的最大值（0xff）相对应。
"unsignedint"的范围是"0-65535"，与之对应的是"0xffff"。
3. Use features
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。
Power frequency withstand voltage test: the power cable should undergo no breakdown at 3500V and 5min. Control cables shall withstand 3000V and shall not be punctured for 5min. Should be subjected to 15 ℃ low temperature winding test and low temperature impact test. After the test sample surface should be no perception of visible cracks.
集散型仪表信号电缆一、产品特点及用途该产品为计算机控制电缆的升级换代产品,其主要特征在于每个线对（或三线组）均有单独屏蔽,称“分屏”,分屏有铜线或镀锡铜线编织屏蔽、铝塑复合带绕包屏蔽、铜塑复合带绕包屏蔽三种。