6 kv and above cable joint: (1) installing a cable terminal head, must be stripped semiconductor electric shielding layer, operation shall not damage the insulation, should avoid mark uneven situation, when necessary use sand paper to grind; 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.
Low smoke zero halogen cables use features: 1. The cable of rated voltage UO/U: 450/750 v ac polyolefin UO/U for 0.6/1 kv2. The long-term working temperature of cable: - 20 ℃ to 90 ℃ and 40 ℃ - 105 ℃ 3. Recommend a bending radius: no armoured cable should be not less than 6 times of cable diameter, structure of armoured or copper tape screened cable should be not less than 12 times of cable diameter.
●型号及名称：HPVV 铜芯聚氯乙烯绝缘聚氯乙烯护套配线电话电缆ZRC-HPVV 铜芯聚氯乙烯绝缘聚氯乙烯护套阻燃配线电话电缆HJVV 铜芯聚氯乙烯绝缘聚氯乙烯护套局用电话电缆ZRC-HJVV 铜芯聚氯乙烯绝缘聚氯乙烯护套阻燃局用电话电缆●性能特点：1.电气性能符合下表项 目指。
行车用电缆-行车专用电线电缆使用特性:额定电压：U0/U0.6/1KV及以下最高工作温度：100℃最低环境温度：固定敷设-40℃我们都是厂家生产，厂家销售，送货上门，价格优惠，有保障的售后部门，欢迎您来电咨询，机床电缆护套电缆 生产国标GB5023全系列：RVV护套电缆，RVVP屏蔽电缆，RV连接。
一、性能：a、电压等级：600V/1000V b、电缆长期工作温度70℃ c、耐燃标准：GB/T、空气中敷设，周围环境温度30℃ 2、直埋敷设，周围环境温度25℃ 3、单根电缆敷设五、适用范围比较RVVZ-阻燃，软动力电缆，易弯曲，适用于机房配电系统内部连接，也可作移动电缆使用。
YKM：星型启动时吸合，切换三角形时不吸合middot;KM：星型启动时不吸合，切换三角形时吸合我们要记住星三角起动过程：1.按下起动按钮2.主KM和YKM接触器吸合，星型起动3.经过时间继电器延时4.切断YKM，并接通△KM，切换到三角型.通电延时型时间继电器：通电后，在设定的时间后才动作，和接触器一样，有线圈，常开触点，常闭触点，但这种通电延时型，不是立刻动作，而是在你设定的时间后才动作。：设定3秒，线圈通电后，常开常闭触点不会立刻动作，要3秒钟时间到了才动作。
用途：适用于本地电信网的城市与乡镇电信线路，也适用于接入公用网的专用网线路，也可用于各厂矿、机关、学校、交通、等部门通信线路使用。主要用于架空或管道敷设，也可直埋。执行标准：YD/T。MHYVP2×3.3+2×0.85资料1.导体采用镀锡铜丝，3.3导体是47/0.3，0.85是12/0.3，排流线采用7/0.28镀锡铜丝。
类别/用途导体绝缘内护层特征外护层----派生例如：DJYPV2.铜（带）电子计算机（铜导体省略）聚乙烯屏蔽聚氯乙烯独股阻燃软电缆ZA-RVV1X101X161X251X351X501X701X951X1201X2401X1501X1851X3001X400ZRVVRR。
二、产品执行标准：GB/T12706.1-2008三、使用特性：表1使用特性聚氯乙烯绝缘交联聚乙烯绝缘导体最高额定温度70℃90℃短路温度(持续最长5s)≤160℃≤250℃敷设时环境温度≥0℃(低于0℃时需预热)敷设时允许弯曲半径单芯电缆单芯电缆不小于电缆外径的15倍，多芯电缆不。
Main products are: mine cable MHYV, MHY MHYA32, MHY32, MHYVP, MHYVR, MHYVRP, MKVV, MKVV22, MKVV32, MKVVR, MKVVP etc., all kinds of products are all in the coal Ann mark certificate and complete specifications, the major products are widely used in coal mine and coal mine monitoring and control. The products are used in dozens of coal groups and mines, which have been highly praised.
；MHYV矿用通信电缆、矿用通信电缆MHYA32矿用通信电缆、MHYAV矿用通信电缆、MHY32矿用通信电缆、MHYVR矿用通信电缆、MHYVP矿用通信电缆、MHYVRPMHYV1*2*0.5矿用通信电缆1*2*0.6矿用通信电缆1*2*0.7矿用通信电缆1*2*0.8MHYV1*4*0.5矿用通。
一些常见问题:(希望各位买家能花上几分钟时间认真阅读)1.电线一扎长度:100米,正负误差2-3米;2.电线型号:BV单股,BVR多股,BVV双胶单股,BVVR双胶多股;3.电线常用规格:1平方/1.5平方/2.5平方/4平方/6平方/10平方等;区别:BV为单股线,BVR为多股,BVR比BV贵5%。
一个很重要的需要注意的一点是，高的分辨率并不代表高的精度。，两个同样精度的旋转编码器,一个分辨率是3600PPR,而另外一个是10000PPR。低分辨率的编码器(3600PPR)可以提供0.1°的测量距离，而高分辨率的编码器可以提供一个更小的测量距离，但是二者的精度是相同的，高分辨率编码器仅仅是具有将0.1°缩小到更小的增量距离的能力。编码器分辨率和精度是两个独立的概念，如上图所示，两个编码器具有相同的分辨率(24PPR)但是具有不同的精度。
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。
Rated voltage up to and including 35 kv cross-linked polyethylene insulating power cable which cable long-term allowed working temperature of conductor: 90 ℃ or less (2) when the short circuit (the longest duration of no more than 5 s) cables, the highest working temperature: 250 ℃ (3) in the air for laying a. Single core cable in parallel at the center of the distance: 185 was and below 2 times of the cable diameter: 240 was and above for 90 MMB. Ambient temperature: 40 ℃ directly buried laying a. Single core cable, is not contact 2 times the diameter of the center distance of cable b. ambient temperature: 25 ℃ c. soil coefficient of thermal resistance: Buried depth: 0.7m