阻燃性能:在规定试验条件下,试样被燃烧,在撤去试验火源后,火焰的蔓延仅在限定范围内,残焰或残灼在限定时间内能自行熄灭的特性额定电压:额定电压是电缆设计和电性能试验用的基准电压。额定电压用U0、U表示,单位为V。

Our professional production and sales: SYV video line, SYWV TV antenna, shielding wire, RVV RVVP sheathed wire, AVVR sheathed wire, AVVR multi-fiber signal lines, RVSP twisted-pair shielded wire, RVS RVS 2 * 2 * 2 * 1.0 RVS 1.5 2.5 AVR 0.12 square red, black, yellow, green AVR 0.5 square red, black, red, yellow AVR 0.3 square black AVVR 4 * 0.3 square white sheath line (blue, green, white and yellow) AVVR 2 * 0.5 square sheathed wire (red, white Black) RVVP 2*0.75 square black sheath... Emergency for wire and cable. RVS RVS 2 * 2 * 2 * 1.0 RVS 1.0 2.5 coaxial cable, elevator cable, super five types of twisted-pair cable, microphone cable, flame retardant, all kinds of cables, teng teng whole series of monitoring all series security cable, wire and cable branch teng whole series of weak current system. Security engineering, control engineering, weak current system engineering, integrated wiring, bank monitoring engineering, network engineering, fire engineering area, remote, building security monitoring, entrance guard visible interphone special audio and video signals such as wire and cable. (SYV video cable, shielding cable, RVV RVVP sheathed cable, signal cable, rf SYV, AVVR) BV plastic, BVR plastic soft copper wire, copper wire RVSP485 twisted-pair shielded cable, RVS twisted-pair cable, RVB parallel lines, the RV cord, KVVP control shielded cable, KVVR control soft cable, KVV control cables and manufacuring HYA communication cable, VV power cable, RVVP shielded wire (1 ~ 30 core) RVV sheathed wire (2 ~ 30 core) AVVR sheathed wire line (2 ~ 30 core) SYV video line (75-3, 5, 7, 9)
Product characteristics and USES: this product has high fireproof performance, through direct combustion flame, in a certain period of time is not short circuit and short circuit fault, therefore, when the fire broke out, is beneficial to reduce the loss, low smoke zero halogen type cable belong to environmental protection cable, especially suitable for fire to demand higher power, large buildings, railways, shipping industry, such as product standards Q/HHTZH009.2 refractory properties accord with GB12666.6 (IEC331) 1-90 requirement. ?? Ac rated voltage: U0/U 0.6/1 kv 2. ?? The highest working temperature for a long time: flame retardant PVC insulated and sheathed 70 ℃ and 105 ℃?? Fluorine plastic insulation and sheath 200 ℃ and 260 ℃ with cross-linked polyethylene insulation 90 ℃ 90 ℃ low smoke zero halogen flame retardant polyolefin low smoke zero halogen flame retardant crosslinked polyolefin 90 ℃ and 120 ℃. ?? Minimum ambient temperature: flame retardant PVC sheathed: fixed installation to 40 ℃, the fixed installation - 15 ℃ fluorine plastic insulation and sheath: fixed installation - 60 ℃; The fixed installation - 20 ℃ 4. Refractory characteristics: comply with IEC331 flame temperature 750 ℃, flame
Insulation resistance: each conductor and the rest of the grounding wire core, the control cable is more than 10000 m Ω. Km, more than 3000 m Ω HYAT cable. Km.

同时,本产品在获得了CCC及CE标志的认证,符合HD(欧盟统一协调标准)的要求,不仅可以适用于中国市场,也适用于欧洲市场。按HD标准此电缆型号为H05VV-F。RVV电缆规格线芯数2×0.50、3×0.50、4×0.50、5×0.50、6×0.50、7×0.50、8×0.50、10×0.50、12×0.50、18×0.50、25×0.50、36×0.50。
今天给大家分享一个使用ST语言的注意事项,是大家在使用ST的时候要注意的,就是判断语句不能连续使用,什么意思呢,看一个例子。图一典型IF语句看,这个程序,有问题吗?你会说,没问题,它也确实没问题,但它真的有问题。这不是绕口令。虽然它从数学的角度看没问题,但是它从ST的语法角度看,它是有问题的,编译一下图二编译错误如图二,看黄色荧光笔的部分,错误类型,不能比较BOOL和类型SINT,这个报警莫名其妙,因为我们根本就没有定义BOOL型变量。
安防工程、监控工程、弱电系统工程、综合布线、银行监控工程、网络工程、音响工程、消防工程、远程三表抄送、楼宇防盗监控、门禁可视对讲等专用、音视频信号电线电缆。产品用途:安全防范产品配套传输线缆、停车场监视电缆、三表远程控制线缆、电子线、通信电缆、火灾报警探测设备传输线缆、摄像头连接用视频线电源线信号线、成套电气配电柜连接用电线电缆。
耐高温控制电缆适用于冶金、石油、化工以及发电厂工矿等企业,在高温条件下和恶劣环境中(如酸、碱、油水低温条件)具有耐油、防水、耐磨、耐酸碱及各种腐蚀性气体、耐老化、不燃烧等优异性能。一:本产品适用于冶金、石油、化工以及发电厂工矿等企业,在高温条件下和恶劣环境中(如酸、碱、油水低温条件)具有耐油、防水、耐磨、耐酸碱及各种腐蚀性气体、耐老化、不燃烧等优异性能。
一、适用范围适用于网络监控系统,无线电通讯广播设备、有线电视和无线电,电子设备中传输视频信号。二、执行标准GB/T14864-1993三、使用特性1.电缆长期允许工作温度应不超过70℃;固定敷设环境温度应不低于-40℃,非固定敷设环境温度应不低于-15℃。

该电缆主要用于交流或直流300V及以下的工作系统,在500V及以下时能正常工作。金属屏蔽电力电缆适用于额定电压0.6/1kv及以下的交直流电力系统中的输送电能用。产品具有较强的电磁干扰、抗雷击及均衡电位、改善供电品质的特性,特别适宜计算机中心、航空航天监控中心、智能大楼等精密电子装置的场所。
Insulation resistance: each conductor and the rest of the grounding wire core, the control cable is more than 10000 m Ω. Km, more than 3000 m Ω HYAT cable. Km.
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。
交流SSR多在电流过零时判断,对感性和容性负载,在电流达零并关断时,线电压并不为零。功率因数cosψ越小,这个电压越大,在关断时,这一较大的电压将以较大的上升率加在SSR的输出端。另外,SSR关断时,感性负载上会产生反电势,该反电势同电压一起形成的过电压将加在SSR的输出端。在使用SSR反转电容分相电机和反接未停转的三相电机时,都可能在SSR的输出端产生二倍于线电压的过压效应。dv/dt和过电压是使SSR失效的重要模式,因此要认真对待。
这种区别是由历史原因造成的,而不是由于技术原因或生产厂家。同轴电缆的这种结构,使它具有高带宽和极好的噪声抑制特性。同轴电缆的带宽取决于电缆长度。1km的电缆可以达到1Gb/s~2Gb/s的数据传输速率。
Tianjin cable plant first factory operating a variety of "RVVP shielded cable", we sincerely provide you with the perfect pre-sale, sale and after-sales service, professional to provide "RVVP shielded cable" technical consulting and other services. Company and the major cities of Shanghai, Beijing, shenzhen, guangdong, jiangsu, zhejiang, shandong, sichuan, fujian, hubei, henan, liaoning, hebei, shanxi, hunan, anhui, tianjin, chongqing, guangxi, heilongjiang, jiangxi, shanxi, jilin, yunnan, xinjiang, Inner Mongolia, gansu, guizhou, Taiwan and other cities have a long term business, reasonable price, various import/domestic brands of various types of complete, strong after-sales service, let its tianlian cable light over the country.

订货须知:1.订货时应注明产品名称、标准、型号、格号、数量及额定电压;2.交货长度、时间;3.其它特殊要求BV线、BVR线、RVSP双绞屏蔽电缆、RVS双绞线、RVB平行线、RV线RVSP屏蔽双绞电缆RVSP(屏蔽双绞线,屏蔽电缆,屏蔽双绞电(HYVP,RVVP)RVVP双绞屏蔽电缆屏。
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