矿用低烟无卤铠装电缆WD-MYJY432X0.75宝山
PTYA23-聚乙烯绝缘综合护套钢带铠装聚乙稀外护套铁路信号电缆PTYA234芯铁路信号电缆铜导体直径：1.0毫米直流电阻：≤23.5Ω/km电缆参考外径：14.3mm缆芯结构：1×4对绞组工作电容：≤70nF星形四线组工作电容：≤50nF绝缘电阻：≥3000MΩ/kmPTYA236芯铁路。
适用于矿用控制电缆适用于交流额定电压u0/u为450/750V及以下的控制监控回路及保护线路和配电装置中电器仪表的连接线。执行标准：MT818-2009.1MT386-1995 Q/TX001-2006 严格按照煤矿安全有关规定。
我们厂生产的矿用控制电缆型号规格范围使用场合MKVV,MKVVP,MKVVP20.5-10mm2,2-61芯，适用于弱电控制系统或强电磁场干扰区MKVV22,MKVV200.5-10mm2,4-61芯MKVV32,MKVV30 0.5-10mm2,7-61芯 MKVVR0.5-6mm2,2-61芯MKVVRP 0.5-4mm2,2-61芯 MKVVP22,MKVVP2-221.5-10mm2,4-61芯MKVVP2-22-1 1.5-10mm2,4-61芯，主要用于500KV变电站与发电厂配电装置及强电磁场干扰区。
Soft core shielding control cable -KVVRP; ZR - KVVRP; ZRC - KVVRP;NH - KVVRP shielded twisted-pair RVSP RVSP shielded twisted-paircable (shielded twisted-pair cable, shielded cable, shieldingtwisted-pair cable this product is fit for ac rated voltage up toand including 450/750 control, monitoring circuit and protectioncircuit, etc. Products use features: 1. The cable conductorlong-term allowed working temperature is 70 ℃; 2. The cabletemperature under installation should not below 0 ℃, allowedbending radius; The cable without armor layer should not be lessthan 6 times the outer diameter of the cable. The cable witharmored layer or copper band shielding structure shall be no lessthan 12 times of the outer diameter of the cable, and the softcable with shielded structure shall be no less than 6 times of theouter diameter of the cable. Instructions for ordering: 1. Productname, model, case number, quantity and rated voltage shall beindicated when ordering; 2. Delivery length and time; 3. Otherspecial requirements
电缆的型号：ZR-YJVZR-YJLVZR-YJYZR-YJLYZR-YJV22ZR-YJLV22ZR-YJV23ZR-YJLV23ZR-YJV23ZR-YJLV23ZR-YJV33ZR-YJLV32ZR-YJLV33适用范围：本产品适用于工频额定电压3.6/kV-26/3。
2019年初级工仪表试题对常用仪表原理、安装、调试、使用等Zui新知识均有涉及，熟练掌握这些仪表专业内容，对仪表初学者提高技能有很大帮助。2019年仪表初级工试题附有正确答案，方便仪表工自己进行测评。填空仪表运行特性通常分为(静态)和(动态)特性。测量误差是(测量值)与()之间的差值。在整个测量过程中保持不变的误差是(系统)误差。(粗差或疏忽误差)指显然与事实不符的误差，没有任何规律可循。调校用的标准仪器，基本误差的值不应超过敏校仪表基本误差值的(1/3)。
它的使用特性经国家检测为煤矿用控制电缆导体的长期允许工作温度为70℃，电缆敷设温度应不低于0℃。煤矿用控制电缆允许的弯曲半径：对有铠装或铜带屏蔽结构的电缆应不小于电缆外径的12倍。对有屏蔽层结构的软电缆，应不小于电缆外径的6倍。对无铠装层的电缆应不小于矿用电缆外径的6倍。矿用低烟无卤铠装电缆WD-MYJY43
MKVV电缆,MKVVP电缆,MKVVP2电缆,MKVV22电缆,MKVV32电缆,MKVVR电缆,MKVVRP电缆,MKVVP22电缆等规格型号的煤矿用阻燃控制电缆，推荐电缆芯数为2,3,4,5,7,8,10,12,14,16,19,24,27,30,37,44,48,52,61芯
MKVV(2-14)*(4-6)mm2 ,(2-10)*10mm2 (2-61)*(0.75-2.5)mm2MKVV22(7-61)*(0.75-1.5)mm2 (4-61)*2.5mm2 (4-14)*(4-6)mm2MKVVP(7-61)*(0.75-1.5)mm2 (4-61)*2.5mm2 (4-14)*(4-6)mm2MKVVP22(7-61)*(0.75-1.5)mm2 (4-61)*2.5mm2 (4-14)*(4-6)mm2。
绝缘线对：把单根绝缘线按照不同的节距扭绞成对，并采用规定的色谱组合以便识别线对，聚氯乙烯护套。用途：主要用于传输音频、150kHZ及以下的模拟信号,也可用于传输2048kbit/s以上的数字信号。适用于远程光网络单元到用户之间的传输系统，以及大楼布线系统中楼宇间传输的子系统。
电缆的型号：ZR-YJVZR-YJLVZR-YJYZR-YJLYZR-YJV22ZR-YJLV22ZR-YJV23ZR-YJLV23ZR-YJV23ZR-YJLV23ZR-YJV33ZR-YJLV32ZR-YJLV33适用范围：本产品适用于工频额定电压3.6/kV-26/3。
PLC硬件部分的设置如下：因为采集的是电压输入（0-5V），要处于OFF状态，这里要结合CJ1W-MAD42，可以去欧姆龙官网进行下载。下面这部分是为了设置欧姆龙plc中硬件输入的电压范围（0-10V）分辨率是4000，分辨率就是模拟量对应的数值量。上图中，这是在编程软件中设置通道模拟量的输入范围，而我这个实际在程序中也进行了设置，后来我和欧姆龙官网的技术人员沟通过，他们说只需要在这个地方进行设置就好了，你们以后可以就这样操作，不需要在程序中进行赋值了。
Power cable installation considerations, characteristics andoperation condition 1, power cable installation considerations forcable laying parallel with heat pipe installation to keep adistance of 2 m, when crossing, should keep 0.5 m. The cable shallbe installed at a distance of 0.5m in parallel or across otherpipelines. When the cable is directly buried and installed, thedirect buried depth of 1-35kv cable is less than 0.7m. When 10KVand below cables are installed in parallel, the net distancebetween them shall not be less than 0.1m and 10-35kv shall not beless than 0.25m. The distance of cross installation is not lessthan 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.
矿用控制电缆：1、额定电压450/750v 2、电缆导体的长度允许工作温度为70摄氏度 3、电缆的敷设温度应不低于0摄氏度，推荐的允许弯曲半径； 4、无铠装层的电缆，应不小于电缆外径的6倍5、有铠装或铜带屏蔽结构的电缆，应不小于电缆外径的12倍，6、有屏蔽结构的软电缆，应不小于电缆外径的6倍，
MT386-1995《煤矿用阻燃电缆阻燃性的试验方法和判定规则》及Q/TX001-2006 《煤矿用塑料绝缘控制电缆》。
Low smoke and low halogen flame retardant control cables aresuitable for the use of ac rated voltage 450/750v and belowcontrol, monitoring circuit and protection line with certainenvironmental protection requirements. Operating conditions (1)rated voltage U0/U is 450/750v; (2) the cable conductor allowed towork at 70 ℃ for a long time; (3) the cable temperature underinstallation should not below 0 ℃, allowed bending radius;recommended by (4) the cable without armor layer shall be no lessthan 6 times the outer diameter of the cable; (5) the cable witharmored or copper belt shielding structure shall be no less than 12times the outer diameter of the cable; (6) the soft cable withshield layer structure shall be no less than 6 times of the cable.Technical requirements for 20 ℃ dc resistance conductors shallcomply with the terms of GB9330.1 insulation resistance are shownin table 3 - table 6. The fire retardant performance test of thecable conforms to the provisions of GB/T18380. If the user does notrequire it to meet the requirements of class C fire retardant. Thecable smoke concentration shall comply with the provisions ofGB/T17651, and its light transmittance shall be 60%. The halogencontent should not exceed 100 mg/g. Other performance requirementsare the same as GB9330.