RS485电缆价格、RS485通信电缆、RS485双绞线性阻抗为120Ω的双绞屏蔽电缆广泛用于RS485/422、CANBUS等总线，该系列电缆规格很多，请提供电缆的敷设环境、通信速率、最大无中继传输距离等参数，我们将依照具体情况推荐最适当的产品。
Tianjin cable factory first branch factory in line with the principle of "customer is god", with "honest and trustworthy, warm and thoughtful" service concept won the trust of the vast number of merchants. My company to the pre-sale, sale, after-sales service to make the following commitments: 1: in order to deepen the understanding of our company, we warmly welcome you leaders, experts to visit factory, our company will provide accommodation and convenient work. 2. Provide users with product price information and product information. 3, in order to guarantee the good performance of products, our company adopts domestic high materials, and, according to the re of ISO 9001 assurance system of strict control of material purchasing and acceptance of the un material is strictly prohibited. 4. Our company strictly implements the system of self-inspection, mutual inspection and special inspection. Un semi-products are strictly prohibited from entering the next process, and un products are not allowed to leave the factory. Organize the production strictly according to the standard or the special technical re of the customer, and provide **** products to the customer. 5. The electric wires and cables provided by our company guarantee brand-new, mature and reliable performance and meet the standards or customer re in all aspects. 6. Our company guarantees that the products provided can operate reliably and safely under the correct installation, normal operation and maintenance.
交联本安电缆、交联信号电缆等：销售热线； ；KJYYVRP；KJYYVRPL；KYJV、KYJVR、KYJVP、KYJVRP、KYJVP2、KYJVRP2、KYJVP1、KYJVRP1、KYJV22、KYJVP22、KYJV22P、KYJV22P2、KYJVP2-22、KYJVRP22、KYJVP。
The total shielding structure can adopt copper wire and copper band combination shielding, copper wire braid shielding, copper wire braid shielding, copper wire braid shielding, etc. The shielded cable of this structure can resist electromagnetic induction, poor grounding and power line, reduce inductance and prevent the induction electromotive force from being too large.
KFF-200，KFP1F-200，KFP1F22-200，KFF22-200型不超过200KFF-260，KFP1F-260，KFP1F22-260，KFF22-260型不超过260℃ 电缆推荐允许弯曲半径 KFF型应不小于电缆外径的12倍。
1：将配电柜后板拆出，按照图纸布局安装线槽及导轨，横平竖直，导轨两头与线槽缝隙不得大于2MM（线槽内安装扎线扣）。
2：确认元器件型号，按照图纸布局排放元器件并贴上标签。
3：接线时须强弱电分开走，避免干扰。
4：号码管字体方向大小必须统一（由左往右看，由下往上看）。
5：压线时线鼻子必须压紧。
元器件接线时按照螺丝的顺时针方向拧紧，拧紧后用手拉一下，检查是否会脱落。
一个接线孔最多只能接2根线。
6：电线颜色使用根据图纸或者客户要求，如果没有要求就使用公司标准：（380VA黄B绿C红N蓝PE黄绿，220V火线黑色零线浅蓝色，24v+棕色0v深蓝色）7：接线完成检查没有错误后装入配电柜，接线过门时须留有弧度，并套缠绕管保护。
缆芯包带：用聚脂薄膜带纵包缆芯。
屏蔽：铝泊屏蔽。
护套：黑色（白色）低密度或中密度聚氯乙烯。
室内通信电缆用途：本产品供交流额定电压500V或直流电压1000V及以下配电装置中电器，仪表接线之用。
产品使用特性：电缆导体的长期允许工作温度应不超过70℃。
MHYBV(PUYBV)煤矿用聚乙烯绝缘镀锌钢丝编织铠装阻燃聚氯乙烯护套通信电缆5-501/0.8用于机械冲击较高的平巷、斜巷煤矿用阻燃通信电缆……mh聚乙烯绝缘……Y铜质线芯……省落铝-聚乙烯粘结护层……A聚乙烯内护层……省落铜丝编织铠装……B蓝阻燃聚氯乙烯护套……V钢丝铠装蓝阻燃聚氯乙烯护。
矿用电缆选择矿井供电系统中，高压供电线路一般都采用铠装电缆，其故障率相对低压供电所采用的[1]要少得多。
采区供电是供电系统中的薄弱环节，工作环境又较差，如何选择电缆的型号与截面，关系到供电运行的安全。
（2）线芯的长期允许工作温度不超过65℃。
（3）W型电缆具有耐气候和一定的耐油性能，适宜于在户外或接触油污的场合使用。
（4）ZR型电缆具有阻燃性能。
用于交流电压450/750V及以下各种移动电器设备，能承受较大的机械外力作用，长期工作温度应不超过65℃，适用于户外或接触油污场合。
二：产品执行标准Q/HHTZH002.4(等效采用英国BS5308标准)阻燃执行GB标准三：使用特性1．交流额定电压：U0/U300/500KV2．最高工作温度：聚乙烯绝缘不超过70℃交联聚乙烯绝缘90℃低烟无卤阻燃聚烯烃70℃低烟无卤阻燃交联聚烯烃90℃和125℃两种聚全氟乙丙烯(F46)绝缘不超。
Flame-retardant cable classification: according to the different flame-retardant materials of cables, flame-retardant cables are divided into halogen flame-retardant cables and halogen-free low-smoke flame-retardant cables. Which contain halogen flame retardant cable insulation, sheath, outer sheath and auxiliary material (package belt and filling) in whole or in part by polyethylene (PVC) containing halogen flame retardant material, thus has good flame retardant properties. However, when the cable burns, a large amount of smoke and haloic acid gas will be released. Haloic acid gas is corrosive to the surrounding electrical e When the cable burns, it will cause harm to the surrounding electrical e and rescue personnel, which is not conducive to the fire fighting and rescue work, thus causing serious "secondary hazards". All or part of the insulation layer, protective sleeve, outer protective layer and auxiliary materials (packing belt and filling) of the halogen-free low-smoke flame-retardant cable are adopted
RS485为半双工工作模式，其信号由正负两条线路信号准位相减而得，是差分输入方式，抗共模干扰能力强，即抗噪声干扰性好；实际应用中其传输距离可达1200米。
RS485具有多站能力，即一对多的主从通信。
在串行通信中，数据通常是在两个站之间传送，按照数据在通信线路上的传送方向可分为3种基本的传送方式：单工、半双工和全双工，如所示。
单工、半双工和全双工通信单工通信使用一根导线，信号的传送方和接收方有明确的方向性。
适用于穿管或电缆槽、架、沟内敷设。
RVVZ电缆，RVV电缆，RVVP电缆，ZRVVR电缆，ZRYJVR电缆VVP屏蔽电缆RVVP屏蔽电缆执行标准JB RVVP 屏蔽电缆产品介绍：RVVP屏蔽电缆，额定电压300V/300V。
NHYJV耐火电缆和普通YJV电缆相比，在结构上多一层耐火云母带，这层耐火云母带起到了隔绝火源的作用，使NHYJV耐火电缆在正常着火情况下仍可以使用一段时间，从而为火灾发生时提供了逃生时间，保证逃生指示用电的正常。