电缆允许弯曲关径应不小于电缆外径的6倍，敷设温度应不低于0℃。
1、产品用途：本产品适用于仪表、仪器及其它电器设备中的信号传输及控制线路。
一、产品简介本产品适用于额定电压500V及以下对于防干扰性要求较高的电子计算机和自动化连接用电缆。
ia-K2YV(EX)本安型PE绝缘、PVC护套二芯绞合屏蔽仪用电缆固定敷设在室内、电缆沟或管道中ia-K2YV(EX)R本安型PE绝缘PVC护套二芯绞合屏蔽仪用软电缆适用于要求柔软的场合ia-K3YV本安型PE绝缘PVC护套三芯绞合屏蔽控制电缆适用于要求柔软的场合ia-K3YVY本安。
KVVP-22铜芯聚氯乙烯绝缘和护套编织屏蔽钢带铠装控制电缆。
KVVP2-22铜芯聚氯乙烯绝缘和护套钢带铠装控制电缆。
技术指标：聚氯乙烯控制电缆线芯允许长期工作最高温度70℃，交联聚乙烯控制电缆线芯允许长期工作最高温度为90℃。
●三相系统用电缆的Uo值推荐如下表：UkvUmkvUo*kvA和B类系统C类系统67.23.66101268.7-3540.52126A类系统--该类系统任何一相导体与地或接地导体接触时，能在1min内与。
用途：耐火电缆广泛应用于高层建筑、地下铁道、地下街、大型电站及重要的工矿企业等与防火安全和消防救生有关的地方，例如，消防设备及紧急向导灯等应急设施的供电线路和控制线路。
2.电缆敷设安装允许弯曲半径非铠装电缆应不小于电缆外径的10倍；铠装电缆应不小于电缆外径的15倍。
PLC的CPU单元对用户程序的周期性循环扫描，与PLC通讯处理器对各远程I/O单元的周期性扫描是异步进行的。
PLC的CPU单元没有直接对远程I/O单元进行操纵，由于远程I/O缓冲区获得周期性刷新，PLC的CPU单元对远程I/O缓冲区的读写操纵，就相当于直接访问了远程I/O单元。
这种通讯方式简单、方便，但要占用PLC的I/O区，只适用于少量数据的通讯。
全局I/O通讯方式全局I/O通讯方式是一种串行共享存储区的通讯方式，它主要用于带有链接区的PLC之间的通讯。
Precautions for installation of power cables: keep 2m distance when the cable is installed in parallel with the thermal pipe, and 0.5m should be maintained when crossing. The cable shall be installed at a distance of 0.5m in parallel or across other pipelines. When the cable is directly buried and installed, the buried depth of 1-35kv cable is not less than 0.7m. When 10KV and below cables are installed in parallel, the net distance between them shall not be less than 0.1m and 10-35kv shall not be less than 0.25m. The distance of cross installation is not less than 0.5m. Cable laying temperature is not 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. 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 cleaned. (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 accidents such as burning sheath. 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. Basic re for cable terminals and intermediate joints: a. good conductor connection; B. The insulation is reliable, and it is recommended to use irradiated cross-linked heat-shrinkable silicone rubber insulation materials; C. good sealing; D. sufficient mechanical strength to meet various operating conditions. The end of the cable must be used to prevent erosion of water and other corrosive materials, so as to prevent breakdown due to the aging of the insulation layer caused by water trees. Crane or forklift should be used for the loading and unloading of cables. It is forbidden to run flat or lay flat. For installation of large cables, cable laying cart should be used to avoid external damage or abrasion caused by manual dragging. If the cable cannot be laid in time for some reason, it should be stored in a dry place to prevent sunlight from exploding and water entering the end of the cable. Note: the installation of wire and cable should be done by the installation personnel or full-time technical personnel familiar with the performance of wire and cable. If there are still unclear matters, please consult the relevant technical department or the technical department of our factory.
电缆阻燃性能试验符合GB/T18380的规定，如用户不要求按C类阻燃要求。
电缆烟浓度应符合GB/T17651的规定，其最小透光率为60%。
卤素含量测定应不大于100mg/g。
其它性能要求同GB9330的规定。
产品型号：TRVVSP中度柔性双绞屏蔽拖链电缆电缆结构：导体：超细精绞无氧铜丝符合VDE0295CLASS6标准绝缘：特殊混合PVC柔性绝缘线芯：两两绞合短节距成对,成对结构后分层集束,防扭结结构设计护层：(可选)无纺布总屏蔽：无氧铜丝编织屏蔽(70%以上密度)护套：丁腈柔性护套颜色：黑色(RAL9。
DJVP3VDJYP3VDJYJP3V铝塑复合膜分对屏蔽。
DJVVPDJYVPDJYJVP编织总屏蔽（铜丝或镀锡丝）。
DJVVP2DJYVP2DJYJVP2铜塑复合膜总屏蔽。
DJVVP3DJYVP3DJYJVP3铝塑复合膜总屏蔽。
规格范围型号 芯数 标称截面(MM)BPYJVTP2-TK 3 1.5~240ZRBPYJVTP2-TK。
可靠性高。
受气候条件和周围环境影响小，传输性能稳定，可靠性高。
具有向超高压，大容量发展的更为有利的条件，如低温，超导电力电缆等。
分布电容较大。
维护工作量少。
电击可能性小。
按电压等级可分为中、低压电力电缆（35千伏及以下）、高压电缆(110千伏以上)、超高压电缆（275～800千伏）以及特高压电缆（1000千伏及以上）。
“暖气片好还是地暖好？”这个问题在大概十几年前，曾经大量出现在北方人口中——那时地暖刚刚兴起，几乎所有用户都在纠结这个问题。
现如今南方地区的朋友家里也装起了暖气，地暖渐渐地向南方发展，于是这个问题改成南方朋友问了。
那么究竟暖气片和地暖有哪些优缺点呢？哪个更适合我们的家呢？地暖地暖更好——这个几乎已经被所有北方用户认可了，这就导致南方用户盲目跟风。
地暖真的适合南方用户吗？地暖优点1.舒服：地暖是从脚部发热，整个房间的温度由下而上逐渐升温。
Soft core shielding control cable -KVVRP; ZR - KVVRP; ZRC - KVVRP; NH - KVVRP shielded twisted-pair RVSP RVSP shielded twisted-pair cable (shielded twisted-pair cable, shielded cable, shielding twisted-pair cable this product is fit for ac rated voltage up to and including 450/750 control, monitoring circuit and protection circuit, etc. Products use features: 1. The cable conductor long-term allowed working temperature is 70 ℃; 2. The cable temperature under installation should not below 0 ℃, allowed bending radius; The cable without armor layer should not be less than 6 times the outer diameter of the cable. The cable with armored layer or copper band shielding structure shall be no less than 12 times of the outer diameter of the cable, and the soft cable with shielded structure shall be no less than 6 times of the outer diameter of the cable. Instructions for ordering: 1. Product name, model, case number, and rated voltage shall be indicated when ordering; 2. Delivery length and time; 3. Other special re
阻燃电缆电线电缆电缆的燃烧是由于外部加热而产生了易燃气体，要达到阻燃的目的，必须抑制引起燃烧的三要素，即：可燃气体、热量和氧气。
卤化氢气体与空气中的水一旦反应后，即生成“卤化氢酸”，严重腐蚀仪器设备、建筑物造成“二次灾害”。
电子计算机用屏蔽电缆，选用介电常数小的高压聚乙烯作绝缘。
型号/名称/性能型号电缆名称敷设方式DJYPV铜芯聚乙烯绝缘，对绞铜丝编织屏蔽，聚氯乙烯护套电子计算机电缆1、固定敷设在室内、电缆沟或管道内。
YQ,YQW轻型橡套软电缆用于轻型移动电器设备和工具YZ,YZW中型橡套软电缆用于各种移动电器设备和工具YC,YCW重型橡套软电缆用于各种移动电器设备，能承受较大的机械外力作用我橡塑电缆厂的野外用橡套电缆（YCW电缆，YZW电缆）是为适应野外用工矿企业调整发展的需要，生产性能优良的橡皮绝。