Tianjin cable pull branch factory in line with the principle of "customer is", with "honest, trustworthy, thoughtful" service concept won the trust of the extensive business. I company for the pre-sale, sale, after-sales service promise as follows: 1, in order to deepen the understanding of our company, we welcome you, experts to visit factory, our company will provide accommodation and convenient work. 2. Provide customers with product price information and product quality information. 3, in order to ensure the products can good, our company adopts domestic high quality materials, and according to the requirements of ISO 9001 guarantee system, to strictly control the material purchasing and acceptance, unqualified material is strictly prohibited. 4. Our company strictly implements the system of self-inspection, mutual inspection and special inspection, and it is strictly prohibited to make any substandard semi-products run out of production. To organize the production according to the special technical requirements of customers and provide qualified products to customers. 5. The wires and cables provided by our company guarantee brand-new, mature and reliable performance and meet the requirements of customers or customers in all aspects. 6. Our company guarantees that the products provided by us can operate reliably and reliably under normal installation, normal operation and conditions.
四、主要技术指标：性能项目单位技术指标20℃时绝缘电阻≥MΩ˙km聚氯乙烯25聚乙烯类5000(阻燃型℃时导体直流电阻Ω/km截面mm20.50.751.01.52.5单根36.024.518.112.17.41R类39.026.019.。
Computer cable sheath: one, the scope of application: this product is fit for ac rated voltage up to and including 300/500 v or 1000 v dc electronic computer network and automation control system of signal transmission, high anti-jamming performance requirements of the detection device and instrument connections. Second, implement standard SPTL/QB2002.10-01 three, use features: 1. The cable conductor of long term working temperature should be allowed no more than 70 ℃, in the process of using cable should prevent high temperature radiation or contact; Ambient temperature under installation should not below 0 ℃. 2. Allowable bending radius of cable laying and installation: non-armoured layer cables shall be no less than 6 times the outer diameter of the cable; The armoured or shielded cable shall not be less than 12 times the outer diameter of the cable. The soft cable of shield layer structure should not be less than 6 times the outer diameter of the cable.
Coaxial cable with hard copper wire as the core, outsourcing a layer of insulation materials. The insulating material is surrounded by tightly woven network conductors and covered with a protective material. There are two widely used coaxial cables. One is the 50 ohm cable, which is used for digital transmission. The other is the 75 ohm cable, used for analog transmission, or broadband coaxial cable. This distinction is made for historical reasons, not for technical reasons or manufacturers.
MHYBV型弯曲半径不小于电缆直径的10倍。MHYVP型弯曲半径不小于电缆直径的10倍。MHY32型弯曲半径不小于电缆直径的15倍。双屏蔽双绞线电缆-RVSPVP。国标生产严把质量关；户外电话线（带油膏填充和铠装-防紫外线和防水-可埋在地下）HYAT53通信电缆填充石油膏系列：主要用于对多导体电线电缆缆芯的空隙进行填充，起防潮和绝缘作用。
平方毫米=10A。5平方毫米=16A或20A。4平方毫米=25A。6平方毫米=32A。10平方毫米=40A或50A。16平方毫米=63A。家庭配电选用什么型号的铜芯导线比较好这个问题；选用导线当然是选用有信誉的商户与有信誉的品牌国标铜芯导线。我个人认为；2.5平方毫米截面积以下（含2.5平方毫米截面积）适宜选用BVV型即双塑单根铜芯导线、4平方毫米截面积以上（含4平方毫米截面积）适宜选用双塑多芯铜芯导线，（说明；是选用7芯的而不是19芯的）。
AVVR型300/300V铜芯聚氯乙烯绝缘聚氯乙烯护套安装用软电缆。KVVP2聚氯乙烯绝缘，聚氯乙烯护套铜带绕包屏蔽控制电缆同上。KVV22聚氯乙烯绝缘，聚氯乙烯护套内钢带铠装控制电线敷设在室内、电缆沟中、管道内及地下，能承受较大的机械外力使用。
Flame retardant cables and fireproof cables: the difference between the average person is very easy to confuse the concept of flame retardant cables and fireproof cables, although there are many more flame retardant cable applies to the advantages of chemical enterprise, such as low, low smoke, non-halogen, but in general, fire-resistant cable can replace flame retardant cable, and flame retardant cables can't take place of fire-resistant cable.
Sheathed control cable is introduced: polyvinyl chloride insulated fine steel wire armoured or steel tape armoured polyvinyl chloride sheathed control cable for mine, for laying indoors, in cable trench, pipelines, and underground shaft, in the male by certain pulling force function and the function of external mechanical forces.
相关技术指标：参照IEC189和英国BS5308标准二、产品代号1、代号DJ-（系列代号）电子计算机用屏蔽电缆Y-（绝缘代号）高压聚乙烯F-（绝缘代号）氟塑料V-（护套代号）聚氯乙烯R-表示多股软线芯P-（屏蔽代号）铜网屏蔽P1镀锡铜网屏蔽P2铜带屏蔽P3铝塑复合膜屏蔽。
Flame retardant cables and fireproof cables: the difference between the average person is very easy to confuse the concept of flame retardant cables and fireproof cables, although there are many more flame retardant cable applies to the advantages of chemical enterprise, such as low, low smoke, non-halogen, but in general, fire-resistant cable can replace flame retardant cable, and flame retardant cables can't take place of fire-resistant cable.
带钢丝绳PVC弹性体行车控制电缆，行车控制电缆，带钢丝绳电缆-带钢丝绳的电缆，电动葫芦电缆，电动葫芦专用电缆，带钢丝绳的行车控制电缆，带钢丝的行车控制电缆，行车电缆，行车手柄线，天车手柄线，电动葫芦手柄线）型号KVVRC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。
使得电路具有了低通滤波器效应。幅频特性曲线如下图。幅频特性曲线最后说一下，高频增强电路与上面不同的是，电容这一次是并联在发射极上的。同样，发射极电阻同样具有频率特性，所以导致三极管放大也有频率效应。频率越高，因为电容的影响，导致电容与电阻并联的阻抗也就越小，所以电路的增益Rc/Re也就越大。使得电路具有了高频增强效应。幅频特性曲线此电路一般用于音频控制以及FM发射电路高频预加重电路中。注意，此电路并不能把增益变成无限大。
It is composed of different material conductors in metal sleeves with insulating materials, which are processed into a flexible solid assembly.
可靠接地时整个485线路的地线必须要有良好的接触，从而保证电压一致，因为在实际施工中，为了接线方便，将线剪成多段再连接，但是没有将屏蔽线作良好的连接，从而使得其地线分成了多段，电压不能保持一致，导致共模干扰。