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Low smoke halogen free power cable is suitable for transmission power in power lines with rated voltage of 0.6/1kv and below. The low-smoke halogen free cable is produced by our company according to the French RCCE and NF series, GB/T18380, GB/T19216, GB/T17651, GB/T17650 and so on.
2.产品技术标准：▲TB/T铁路信号电缆▲TB/T3100.1～.5-2004《铁路数字信号电缆》▲Q/JTL051.综合屏蔽信号电缆3.主要型号有：铁路信号电缆，铁路综合护套信号电缆，铁路铝护套信号电缆，铁路数字信号电缆，铁路内屏蔽数字信号电缆，铁路计轴信号电缆，铁路应答器数据传输电缆。
绝缘：F46（工作温度200℃）、PFA（工作温度250℃）护套：F46（工作温度200℃）、PFA（工作温度250℃）、PVC（工作温度70℃、90℃、105℃）使用特性：1、额定电压：交流Uo／U；450／750V2、工作温度：序号1～4-60～＋200℃及-60～＋250℃序号5～14-15～。
成缆工序变频电缆要求结构对称，成缆时必须保证绝缘线芯张力均匀，使成缆后的线芯长度尽量保持一致，否则会引起结构变化，导致电容和电感的不均匀性，影响电缆的电气性能*1*名称：充油通信电缆*2*型号：HYAT、HYAT53、HYAT23、HYAT22（防水、地埋）*3*用途：实心绝缘填充型电缆适用于本地电。
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。适用于交流额电压450/750V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。
今天就讲解一下接触器自锁到底怎么接线？在了解接触器自锁的接线以前，我们首先要了解接触器的原理，还有常开常闭触点，不知道这些我们接线还是一窍不通，下面我们先讲解一下接触器它的原理构造。380伏交流接触器有三个主触头也就是电源进线和负载端出线，进线分别是三相火线L1L2和L3,负载端出线分别是T1T2和T3,接触器主触头进线和出线上下一一对应，分别是L1对应T1,L2对应T2L3对应T3,主触头在接触器不吸合的状态下是常开状态什么是常开？常开的意思就是说触点是断开的，不联通的，常闭的意思就是说触点是联通的，常开和常闭一定要充分理解才可以接触器还有一个常开辅助触头，也就是右方的第四个接触器触点，上下也是一一对应，接触器不吸合一直是常开状态，辅助触头的作用就是辅助按钮控制接触器的，而主触头的作用是控制负载端的，所以分为主触头和辅助触头。
计算机电缆用途：本产品广泛地应用于发电、冶金、石油、化工、轻纺等部门的检测和控制用计算机系统或自动化装置、以及一般的工业计算机上。使用特征：额定电压UO/U为300/500V。允许工作温度不超过70℃，敷设温度不低于0℃，允许弯曲半径应不小于电缆外的12倍，软结构电缆应不小于电缆外的8倍，铜带屏蔽的电缆应于小于电缆外径的15倍。
RVVP is a kind of soft PVC insulated wire conductor and shield cable and PVC sheathed. Copper core PVC insulated shield PVC sheathed flexible cable voltage 300 v / 300 v 2-24 core purpose: installation of instruments, meters, intercom, monitoring, control scope of application: suitable for ac rated voltage up to and including 300/300 electronics, instruments and electronic equipment and automation devices such as shielding line executive standard s s GB5023.5 JB8734.5-1998-85 using feature s rated voltage: 300/300 v s rated temperature: AVP - 90, RVP - 90 type 900 C, the other shows characteristics of model 700 C s conductor: many strands of bare copper wire or tinned copper wires twisted s shielding ways: woven or inclined round (customer requirements) s conductor some conclusions: 1-24 core s insulation, RVP: (1) the AVP - 90-90: PVC/E PVC insulated (2) the AVP: PVC/C type PVC insulated (3) the rest of the models: PVC/D type PVC insulated s stranded: insulated conductor cable with filling (if any).
This process specification provides for rated voltage 450/750v, single core 1.5-500mm2 PVC insulated or polyolefin insulated flame-retardant fire resistant soft cable; And 0.6/1kv single core 4~500mm2, 2~5 cores 1.5~240mm2 polychlorinated insulated or polyolefin insulated flame-retardant fire resistant flexible cables process specifications, technical requirements, and acceptance rules. The main models of this process specification are: rated voltage 450/750v: za-rv; WDZA - RY, etc. Rated voltage 0.6/1kv: za-rvv, za-rvv22, wdza-ryy, wdza-ryy23, wdna-ryy, wdna-ryy23. 2? Usage characteristics, classification and nomenclature of cables 2.1? Service characteristics 2.1.1 cable rated operating voltage: 450/750v, 600/1000v. 2.1.3 temperature under installation should not below 0 ℃. 2.1.4 small bending radius of cables: unarmored cables: the flame retardant type is 6 times the outer diameter of cables, and the fire resistant type is 12 times the outer diameter of cables; The armored cable is 20 times the outer diameter of the cable. 2.2? The cable type consists of 5 parts: serial code, insulation, sheath material code, outer sheath and performance code.
RVVP is a kind of soft PVC insulated wire conductor and shield cable and PVC sheathed. Copper core PVC insulated shield PVC sheathed flexible cable voltage 300 v / 300 v 2-24 core purpose: installation of instruments, meters, intercom, monitoring, control scope of application: suitable for ac rated voltage up to and including 300/300 electronics, instruments and electronic equipment and automation devices such as shielding line executive standard s s GB5023.5 JB8734.5-1998-85 using feature s rated voltage: 300/300 v s rated temperature: AVP - 90, RVP - 90 type 900 C, the other shows characteristics of model 700 C s conductor: many strands of bare copper wire or tinned copper wires twisted s shielding ways: woven or inclined round (customer requirements) s conductor some conclusions: 1-24 core s insulation, RVP: (1) the AVP - 90-90: PVC/E PVC insulated (2) the AVP: PVC/C type PVC insulated (3) the rest of the models: PVC/D type PVC insulated s stranded: insulated conductor cable with filling (if any).
聚烯烃绝缘石油膏填充市内通信电缆HYAT电缆型号有ZRC-HYATHYATHYAT23HYAT53ZRC-HYAT23ZRC-HYAT53HYYT;ZRC-HYAT;低烟无卤通信电缆填充石油膏系列WDZ-HYATWDZ-HYAT23WDZ-HYAT53充油通信电缆 HYAT HYAT23 HYA。
电缆端头必须使用防止水及其它腐蚀性材料的侵蚀，以防因水树引起绝缘层老化而导致击穿。电缆的装卸必须使用吊车或叉车，禁止平运，平放，大型电缆安装时须使用放缆车，以免电缆受外力损伤或因人工拖动而擦伤。电缆如因故不能及时敷设时，应将其放在干燥地方贮存，防止日光爆晒，电缆端头进水等。
线性变换原理线性变换原理.线性变换的原理很简单，比如说，在工程测量中，常会遇到4-20mA的传感器，如压力传感器或位移传感器等，要转换为0-50MPa的物理量。用高中学过的直线方程两点式就可以了。已知两点（4，0）和（20，50），求（x,y）。线性变换子程序以下介绍线性变换的子程序编写。新建一个功能块（如FC30）,在FC30中编写线性变换子程序。如.1所示为线性转化子程序输入变量。，为了便于使用，输入变量的数据类型都定义为浮点数。
RS485电缆美制标准AWG与公制、英制单位对照表美制AWG外径截面积(mm2)电阻值(W/km)美制AWG外径截面积(mm2)电阻值(W/km)公制mm英制inch公制mm英制inch4/011.680.46107.220.17220.6430.025。
。。同轴电缆（视频线，监控线，射频线）同轴电缆从用途上分可分为基带同轴电缆和宽带同轴电缆（即网络同轴电缆和视频同轴电缆）。同轴电缆分50Ω基带电缆和75Ω宽带电缆两类。基带电缆又分细同轴电缆和粗同轴电缆。
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
4、6、8、9、12、14、16、19、21、24、28、30、33、37、42、44、48、52、56、61PTYY聚乙烯绝缘聚乙烯护套铁路信号电缆PTY22聚乙烯绝缘钢带铠装聚氯乙烯外护套铁路信号电缆敷设在土壤、槽、管中，能承受较大的机械外力PTY23聚乙烯绝缘钢带铠装聚乙烯外护。