RS485 cable product description: the characteristic impedance of 100 ohms, conductor is 2 * 2 * 24 awg multi-strand tin electrolytic copper wire twisted and become, insulating sheath like installation of design and color recognition, aluminum foil/polyester with total shielding, additional stranded tinned copper wire grounding conductor, industrial gray PVC outer sheath, 1 of the RS - 485 communication cable, the characteristic impedance of 120 ohms, conductor is 2 * 24 awg stranded tinned copper wire, PE insulation, covered with aluminum foil/polyester composite with + 90% tin plated copper wire this double shielding, comes with a grounding conductor is RS - 485 communication cable.
根据需要可制造交联聚乙烯类绝缘0.6/1kv的控制电缆以及阻燃（ZR）、NHYJV电缆NHYJV耐火电缆 YJV电缆全称交联聚乙烯绝缘聚氯乙烯护套电力电缆，适用于室内、电缆沟、管道、隧道等，主要用于电力的传输，是最为常用的电力电缆种类之一。
煤矿用聚氯乙稀绝缘和护套阻燃控制电缆天津市电缆厂MKVVMKVV22MKVV32MKVVRMKVVRPMKVV（2-61芯）MKVV芯） MKVVR （2-61芯）MKVV芯） MKVVP （2-61芯）。
Flexible cable RVVT, RVV RVVTP resistance to bending RVVPT RVVT detail TRVV flexible cable, cable RVVTP RVVPT bending resistant cable type: TRVV connection and control using the flexible cable, widely used in dry or wet indoor, reciprocating bend free mobile no compulsory pull drag chain system. Such as machine tool processing e, logistics delivery system, port machinery, complete e installation engineering. Product features: according to customer re, color core or coding core. High PVC mix is adopted to reduce the re of cable outer diameter for installation space. The designed cycle bending life is 5 million times, and the actual use has exceeded 6 million times. Cable structure: conductor: using multi-strand fine ground and other fine twisted into a bundle conductor oxygen-free copper wire, conform to DIN VDE 0295 grade 6 insulation: high PVC mixture color: color line core or coding line core 3 core + yellow or green conductor sheathed: high PVC mixture color: black, grey, orange electrical characteristics: rated voltage U0 / U < 0.5 was 300/300 V p o. 5 was 300/500 V test voltage: 3000 V U meet DIN VDE 0281 part 2 temperature range: ℃ mobile installation: fixed installation: - 5 ℃ ~ + 70 ℃ and 30 ℃ ~ + 70 ℃ when continuous movement, the minimum bending radius: 7.5 x cable diameter
铠装电缆、铠装耐油电缆、计算机铠装控制电缆、铠装高温电缆、铠装屏蔽电缆、阻燃铠装电缆、耐火铠装电缆等：铠装电缆用途：铠装电缆机械保护层可以加到任何结构的电缆上，以增加电缆的机械强度，提高防侵蚀能力，是为易受机械破坏及及易受侵蚀的地区而设计的特种电缆。
L、C元件称为“惯性元件”，即电感中的电流、电容器两端的电压，都有一定的“电惯性”，不能突然变化。
充放电时间，不光与L、C的容量有关，还与充/放电电路中的电阻R有关。
“1UF电容它的充放电时间是多长？”，不讲电阻，就不能回答。
RC电路的时间常数：τ=RC充电时，uc=U×[1-e(-t/τ)]U是电源电压放电时，uc=Uo×e(-t/τ)Uo是放电前电容上电压RL电路的时间常数：τ=L/RLC电路接直流，i=Io[1-e(-t/τ)]Io是最终稳定电流LC电路的短路，i=Io×e(-t/τ)]Io是短路前L中电流设V0为电容上的初始电压值；V1为电容最终可充到或放到的电压值；Vt为t时刻电容上的电压值。
弱电信号线|线|铠装线；电信局专用线；通信电缆-HYA电缆|HYA23电缆|HYA22电缆|HYA53电缆|室外线HYA53HYA53钢塑复合带铠装通信电缆;HYA|地面通信电缆|地面通信线缆,直埋市话线.AVVR型300/300V铜芯聚氯乙烯绝AVVR聚氯乙烯软护套线缘聚氯乙烯护套。
F46绝缘聚氯乙烯护套铜丝编织分-总屏蔽计算机电缆。
F46绝缘聚氯乙烯护套铜丝编织分屏蔽计算机电缆。
F46绝缘F46护套铜丝编织总屏蔽计算机电缆。
F46绝缘F46护套铜丝编织分-总屏蔽计算机电缆。
聚氯乙烯绝缘及护套复合带分-总屏蔽计算电缆。
3）.销售起定量：电议。
4）.发货准则：运费由卖方负责.到货时间一般为3天.如果您急需货物，我们可以发顺丰快递（需方付运费）。
7、如确因产品质量问题或我公司提供的产品与合同要求不一致，我公司同意买方换货或拒收产品并作退货处理。
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
产品介绍-塑料绝缘控制电缆|KVV控制电缆|KVVR控制电缆|KVVP控制电缆|KVVP屏蔽控制电缆|KVVRP屏蔽控制电缆|KVVP2控制电缆|KVVP2-22控制电缆|KVV22铠装控制电缆|控制电缆KVV|控制电缆KVVR|控制电缆KVVP|控制电缆KVVRP|控制电缆KVV22产品详细说明：。
在交联聚乙烯绝缘高阻燃的基础上又开发了低烟无卤高阻燃隔氧层动力电缆，其低烟无卤性能符合国家标准GB/T17651.1.2和GB/T17650.1.2。
这样本公司的交联聚乙烯动力电缆的整体水平低于国内领先地位。
三相电三根火线之间的电压是380V，但任意一根火线跟自己脚底下踩的地就只有220V了，也就是市电。
三相电变两相电的简单接法（自行判断正确性，后果自负）：绿配蓝，红配灰。
黄绿线暂时不接，出于安全方面考虑等以后买来三芯电线再重新接线。
三相电与两相电的区别？注意：只有单相电与三相电。
不存在两相电之说。
一根火线一根零线，是单相220伏。
家用照明电大多采用此种输入接线方式。
两根火线，是单相380伏。
BX系列焊机，电阻系列焊机以及现在的逆变直流双电源焊机，大多采用此种输入接线方式。
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.
（SYV线、RVVP线、RVSP线、RVV线、AVVR线、BV线、BVR线、RV线、RVS线、RVB线、RVVB线）SYV实芯聚乙烯绝缘聚氯乙烯护套射频同轴电缆 ：用于视频监控线路、会议视频等电子线路架设、工程装修讯号传输、影音器材连接以及其它电子装置，无线电通讯广播设备的有关无线电电子设备中传输射。