ZC-DJYVPR3X1.5阻燃计算机用电缆黄埔品质过关****ZR-KVVR2X2.52芯阻燃控制线缆丽质
2, product characteristics: cable ac rated voltage up to 500 v, the long-term working temperature of cable core shall not exceed 70 ℃. Cable allows bending clearance diameter should not less than 6 times of cable diameter, temperature under installation should not below 0 ℃.
带钢丝绳PVC弹性体行车控制电缆，具有柔软、耐磨、防油等特性，线旁附钢丝绳，增强抗拉力。适用于交流额定电压0.6/1KV及以下的行车、台车、传输机械等移动电器用动力传输线及控制、照明、通讯线路，本产品已广泛应用于冶金、电力、船舶、港口等行业。
煤矿用阻燃信号电缆1、产品采用标准：Q／3700XTDL2、命名代号煤矿用通信电缆……（MH）聚乙烯绝缘……（Y）蓝阻燃聚氯乙烯护套……（V）铝-聚乙烯粘结护层……（A）聚乙烯内护套……（省略）钢丝纺织铠装……（B）钢丝铠装蓝阻燃聚氯乙烯护套……（32）软型多股铜丝……（R）铜质线芯……（省略）型号。
Organization code certificate: CCC certificate no. : 20030 business license registration number: 0917 registration certificate: 3744 remittance account number: 910001507 opening bank: liuguxian rural credit cooperative, dacheng county, hebei province
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,,24,27,30,37,44,48,52,61芯。
但限于条件，其时两线制仅在压力、差压变送器上选用，温度变送器等仍选用四线制。如今国内两线制变送器的商品规模也大大拓展了，运用领域也越来越多。一起从国外进来的变送器也是两线制的居多。不同线制变送器的差异两线制因为要完成两线制变送器有必要满足以下条件:V≤Emin-ImaxRLmax变送器的输出端电压V等于规则的最低电源电压减去电流在负载电阻和传输导线电阻上的压降。I≤Imin变送器的正常作业电流I有必要小于或等于变送器的输出电流。
因为RS485接口组成的半双工网络，一般只需二根连线，所以RS485接口均采用屏蔽双绞线传输。在使用RS485通讯时，对于特定的传输线路，主机（召测设备）到仪表的485口间的电缆长度与数据信号传输的波特率成反比；这个长度主要受信号的失真以及噪声的影响所影响。
。铠装通信电缆包含：HYA22HYV22HYAT22HYY23HYYT23HYA23HYAT23HYA53HYAT53。铠装通信电缆机械保护层：53型采用0.15mm厚的轧纹钢带，纵包于基本电缆之上，两边搭接。
Class A system - any phase conductor of such A system can be separated from the system within 1min when it comes into contact with ground or ground conductors. B class system, the system includes only the single-phase earth fault short-time running conditions, earth fault time should be no more than 1 h, but in any case, the longest do not exceed 8 h, ground fault total duration of not more than 125 h every year; Class C systems -- systems that do not belong to class A and class B.
RS485 cable product description: 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, overall **** aluminum foil/polyester belt shielding, additional independent stranded tinned copper wire grounding conductor, industrial gray PVC outer sheath, the standard 1 to 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 cover, double shielding with independent grounding conductor is RS - 485 communication cable.
Fire retardant broadcasting line ZRHYPY23 zr-hypv ZRHYPV53 zr-hypv22 zr-hpyv23 zr-hyp zr-hypv23 broadcasting line - credit broadcasting line -HYPY23? HYPV? HYPV53? HYPV22? HYP? It adopts full chromatographic insulation and aluminum plastic composite sheath (that is, the longitudinal shielding aluminum belt of the cable is bonded with the sheath to form the seal sheath), which has the characteristics of superior electrical performance and convenient construction
6.电力电缆 VV VLV VV22 VLV22 VV32 （5*6+*240+1）NH耐火加大零线等非标电缆7．通信机房用阻燃软结构电缆（通信设备电源线）ZRVVR（6-240MM2）8．高速公路紧急电缆GHYATGHYAT5。
如今网络已经成为了家家户户必不可少的东西，尽管你看不见它。如今的电脑、手机甚至电视机，无一不需要网络。没有网络的家庭，对于大多数人来说，几乎可以等同于“家徒四壁”这四个字。既然提到网络，就必然少不了网线。在我们装修时，如何预埋网线，才能最大化的方便入住后网络的使用呢？两个误区误区未来无线网可以替代网线这一想法是大错特错的。如果说未来手机网络可以替代无线网络，这一点是完全可能的。但是想让无线网替代网线的功能，在可见的未来还暂时做不到。
④在空气中敷设a.单芯电缆平行敷设时的中心距离：185mm2及以下电缆直径的2倍：240mm2及以上为90mm b.周围环境温度：30℃ c.不同环境温度下载流量的校正系数：环境温度（℃）校系数940.870.79⑤直埋敷。
MKVV(2-14)*(4-6)mm2 ,(2-10)*10mm2 (2-61)*(0.75-2.5)mm2 MKVV*(0.75-1.5)mm2 (4-61)*2.5mm2 (4-14)*(4-6)mm2 MKVVP(7-61)*(0.75-1.5)mm2 (4-61)*2.5mm2 (4-14)。
型号名称主要用途铜芯铝芯YJVYJLV交联聚乙烯绝缘聚氯乙烯护套电力电缆敷设于室内，隧道、电缆沟及管道中，也可埋在松散的土壤中，电缆能承受一定的敷设牵引YJV22YJLV22交联聚乙烯绝缘钢带铠装氯乙烯护套电力电缆适用于室内、隧道、电缆沟及地下直埋敷设，电缆能承受机械外力作用，。
2、绝缘材料：高密度聚乙烯或聚丙烯，按照全色谱标准标明绝缘线的颜色。3、绝缘线对：把二根不同颜色的绝缘线按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。4、缆芯结构：以25对为基本单位，超过25对的电缆按单位组合，每个单位用规定色谱的单位扎带绕扎，以便识别不同的单位。