阿巴嘎旗阻燃耐火控制电缆ZAN-KVV8X0.5

阿巴嘎旗阻燃耐火控制电缆ZAN-KVV8X0.5
Our factory was founded in 1971, is a production and sales of various kinds of flame retardant communication cable, shielded cable for mine, mine screen communication cable, mine telephone cable, shielded cable for mine, mine fire retardant cable, flame retardant cable, mining flame-retardant control cable, communication cable, mining cable, flame retardant mining communication cable, communication cable, mine cable, mine, mine control cable, cable for mine monitoring, sensors, cable, cable, control cable, computer cable, flame retardant cable, shielded cable. City communication cable, railway cable, power line, electrical e wire and cable, video line, special cable. And other professional manufacturers. Enterprises with more than 300 employees, engineering and technical personnel more than 30 people, the factory goes to 20000 square meters, owns fixed assets of 15 million yuan, the total number of companies have production and inspection e more than 120 units (pieces), annual output value of 150 million yuan.

耐火电缆是指在火焰燃烧情况下能够保持一定时间安全运行的电缆。我国国家标准GB12666.6（等IEC331）将耐火试验分A、B两种级别，A级火焰温度950~1000℃，持续供火时间90min，B级火焰温度750~800℃，持续供火时间90 min，整个试验期间，试样应承受产品规定的额定电压值。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。阿巴嘎旗

耐火电缆使用条件：1.交流额定电压：U。/U（V系列：600/1000V，K系列：450/750V，B系列：450/750V）。2.电缆高长期工作温度（1）阻烯聚坲乙烯绝缘及护套：70℃和105℃两种；交联聚乙烯绝缘：90℃；（2）氟塑料绝缘和护套：220℃和260℃两种；氟塑料绝缘和105℃阻燃聚氟乙烯护套：90℃和125℃两种。（3）低卤低烟阻燃PVC绝缘和护套：70℃；无卤低烟阻燃绝缘和护套：90℃和125℃两种。3.低环境温度：（1）阻燃聚氯乙烯绝缘和护套：固定敷设-40℃；非固定敷设-15℃；（2）氟塑料绝缘和护套：固定敷设-60℃；非固定敷设-20℃；4.电缆安全敷设温度不应低于0℃。

Combination cable, control cable, communication cable, coaxial cable of the combined, messenger combination cable SYV75-5 + RVV RVVP + in order to adapt to the needs of high-tech and various kinds of scientific research, and organized scientific and technological personnel and use the unit joint efforts, the combination of a series of cables. The products have compact structure, performance and convenient installation, and are widely used in communication, navigation, electronic countermeasures, early warning, sea training and exploration, and comprehensive cables for various e. According to the re of the user, multiple lines, power lines, shielding lines, coaxial radio frequency cables, etc. can be combined into a combined cable with total shielding. In addition, our factory has developed a self-supporting combined cable on the basis of syv75-5 +RVV+RVVP cable, and added a self-supporting steel wire to the cable, which greatly enhances the cable tension. Video line syv-75-5, syv-75-3, power supply line RVV, shielding line RVVP supply video line syv-75-5, syv-75-3, power supply line RVV, shielding line RVVP this company solemnly declares: 1. 2. Product tracking service within two years and keep records in the archives for 20 years. 3. Due to product problems, our company will guarantee, refund, replacement and customer re.



Main products are: mine cable MHYV, MHY MHYA32, MHY32, MHYVP, MHYVR, MHYVRP, MKVV, MKVV22, MKVV32, MKVVR, MKVVP etc., all kinds of products are all in the coal Ann mark certificate and complete specifications, the major products are widely used in coal mine and coal mine monitoring and control. The products are used in dozens of coal groups and mines, which have been highly praised.

从网络拓扑结构上来讲，一个局域网通常是两到三层结构。接摄像机那端为接入层，一般用百兆交换机就够了，除非你在一个交换机上接了很多个摄像机。汇集层、核心层则要按该交换机汇聚了多少路图像来计算。计算方法如下：如果接960P的网络摄像机，一般15路图像以内，用百兆交换机；超过15路则用千兆交换机；如果接1080P的网络摄像机，一般8路图像以内，用百兆交换机，超过8路则用千兆交换机。交换机的选择要求监控网络有三层架构方式：核心层，汇聚层，接入层。

Power cable installation considerations, characteristics and operation condition 1, power cable installation considerations for cable laying parallel with heat pipe installation to keep a distance of 2 m, when crossing, should keep 0.5 m. 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 direct buried depth of 1-35kv cable is 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 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.

Electronic computer shielded cable, choose high pressure polyethylene insulation, small dielectric constant use to ground, and the screen, the total screen (or three quad twisted, group screening, group screen a total screen), such as structure, with a small dielectric loss, transmit ability strong, good anti-jamming performance characteristics, can be reliably transmitted weak the analog signal or digital signal, can be widely used in electricity, metallurgy, petroleum, chemical, textile and other departments of detection and control computer system or automated devices, as well as general industrial computer. High-temperature F46 computer cable belong to one of the special cable, electronic computer system is in urgent need of modern industrial construction of form a complete set of products, it is widely used in energy industry, metallurgical industry and petrochemical industry and other industrial enterprises and scientific research department of the electronic computer, instruments and meters, all kinds of automatic detection e, and other information processing e signalling and the control system. Application: it is installed in indoor, cable trench, pipe and other places where high temperature resistance electrostatic shielding is required
　　屏蔽：用轧纹(或不轧纹)双面涂塑铝带纵包于缆芯包带之外，两边搭接粘合。护套：黑色低密度、中密度或高密度聚乙烯。识别标记：电缆外表面打印识别标记。标记内容：电缆型号、长度、公司名称及制造年份。标记间隔不大于1m。

　　严格的说，485总线必须要单点可靠接地。单点就是整个485总线上只能是有一个点接地，不能多点接地，因为将其接地是因为要将地线（一般都是屏蔽线作地线）上的电压保持一致，防止共模干扰，如果多点接地适得其反。

耐火电缆的耐火特性：符合IEC331规定 符合GB12666.6规定 :火焰温度750℃ 火焰温度 950℃-1000℃ 火焰温度 750℃-800℃ 燃烧时间 3h 燃烧时间90min 燃烧时间90min 冷却时间 21h 附加电压 额定电压 附加电压 额定电压附加电压 额定电压 附加电流 3A 附加电流 3A附加电流 3A A类 B类6.敷设推荐的允许弯曲半径：非铠装、编织屏蔽电缆应不小于电缆外径的6倍；钢带铠装电缆应不小于电缆外径的12倍；氟塑料绝缘和护套材料电缆应不小于电缆外径的8倍。

燃烧特性代号表：代号  名称Za 阻燃ZA 阻燃A类ZB       阻燃B类ZC       阻燃C类ZDb阻燃D类省略       有卤W      无卤D   低烟U   低毒N   耐火NJ 耐火加冲击NS   耐火加喷水a Z为单根阻燃，仅用于基材不含卤素的产品。基材含卤素的，Z省略。b ZD为成束燃烧D类，适用于外径不大于12mm即较细的产品。

但采用正弦波PWM方式时，低次的谐波分量小，影响变小。减弱或消除振动的方法是在变频器输出侧设置交流电抗器，以吸收变频器输出电流中的高次谐波电流成分。使用PAM方式或方波PWM方式变频器时，可改用正弦波PWM方式变频器，以减小脉动转矩。电动机振动的原因可分为电磁与机械两种。1)电磁原因引起的振动表现为：较低次的谐波分量与转子的谐振，使固有频率附近的振动分量增加。由于谐波产生的脉动转矩的影响发生振动，特别是当脉动转矩的频率同电动机转子与负载构成的轴系扭转固有频率一致时将发生谐振。

　　KYJVRZR-KYJVR铜芯交联聚乙烯绝缘聚氯乙烯护套控制软电缆敷设在室内移动要求柔软等场合。KYJVRPZR-KYJVRP铜芯交联聚乙烯绝缘聚氯乙烯护套编织屏蔽控制软电缆敷设在室内移动要求柔软屏蔽等场合。
BJYC3V32 / SA communications twisted-pair (aluminous model with shielding. Steel wire armoured cable. Flame retardant) call communication cable is for GTC and STENTOFON communication system in order not to wake the set of a small section multi-fiber process USES communication cable, with reference to foreign / 60029 series of products in the structure, with high temperature resistant DJFP2FP2 computer cable, DJFFP2, DJFP2V, DJFP2VP2, DJFVP2, high temperature resistant computer cable - type: DJFFP,DJFPF,DJFPFP,DJFPFP, DJFFP, DJFPV,DJFP.