二:氟塑料高温补偿导线产品执行标准:GB/T等效采用IEC584-3标准)三:氟塑料高温补偿导线使用特性1.导体最高工作温度:耐热级:聚全氟乙丙烯(F46)200℃可溶性聚四氟乙烯260℃,,,,硅橡胶180℃普通级:聚氯乙烯70℃和105℃,交联聚乙烯90℃低烟无卤阻燃聚烯烃70℃,交联型90℃和。
Fire control cable USES: this product has high fire-resistant ability, can withstand direct flame combustion and in a certain period of time not short circuit or open circuit fault occur, when the fire broke out, to put out the fire and reduce the loss. It is suitable for electric devices and control systems in places with high fire risk and fire control importance. Product standard: Q/ 320831nhn℃ ~ + 105 ℃ and 60 ℃ ~ + 200 ℃. Two kinds of refractory characteristics: comply with GB: A class: the flame temperature of 950 ℃ to 1000 ℃ class B: flame temperature 750 ℃ to 800 ℃ the burning time of 90 min burning time: 90 min additional voltage 500 v 3 additional voltage 500 v 3 A current a. flame retardant properties: Comply with class A of gb test • minimum allowable bending radius of cable: The armoured not less than 12 times the cable diameter models: main material PVC insulated PVC sheathed low smoke low halogen low smoke zero halogen sheath insulation fluorine plastic insulation Low smoke low halogen sheath fluorine plastic insulation Low smoke zero halogen sheath fluorine plastic insulation fluorine plastic sheath Single strand conductors without shielding NH - KVV NH - KV D Y D NH - KFV DNH KFY D NH - KFF single strands of copper conductor shielding NH - KVVP NH - KV D Y D P NH - KFV D P NH - KFY D P NH - KFFP single stranded conductor copper tape screened NH - KVVP 2 NH - KV D Y D P 2 NH - KFV D P 2 NH - KFY D P 2 NH - KFFP 2 soft conductor shielding NH - no KVVR NH - KV D Y D R NH - KFV NH - KFY D D R R NH - KFFR soft copper conductor shielding NH - KVVRPNH - KV D Y D RP NH - RP NH - KFY KFV D D RP NH - KFFRP no shielding NH - steel tape armoured KVV NH - 22 KV D Y D - 22 NH - KFV NH - KFY D - D - 22 of 22 NH - KFF 22 note: PVC insulation structure by using the 105 ℃ resistance fuel used for refractory compound insulation structure. Specifications: Section 0.5 0.75 1.0 1.5 2.5 4 June 15 mm 2 above and below 2.5 mm 2 class A 1/0.80 1/1.13 1/1.13 1/1.38 1/1.38 1/1.13 1/1.13 PVC fluorine plastic sheath PVC fluorine plastic sheath class B 19/0.1 19/0.2 19/0.2 19/0.3 19/0.3 19/0.2 19/0.2 4-2-2-61 core 37 core 27 Core 4-14 core technical indicators: Performance can project technical indicators conductor dc resistance (20 ℃) or less Ω/km nominal section 0.5 0.75 1.0 1.5 2.5 4 6 class A 36.0 24.5 18.1 12.1 7.41 4.61 3.08 39.0 26.0 26.0 13.3 7.98 4.95 19.5 B test voltage 3000 V / 5 min not breakdown insulation resistance M Ω 1000 km or more refractory characteristics through the class A, Class B (according to gb test) passed class A (according to gb test).
视频信号传输线有同轴电缆(不平衡电缆)、平衡对称电缆(电缆)、光缆。
平衡对称电缆和光缆一般用于长距离传输,对于宾馆酒店等建筑一般采用同轴电缆传输视频基带信号的传输方式。
当采用75-5同轴电缆时,一般传输距离在300m时,应考虑使用电缆补偿器。
型号及名称:序号型号名称1KFF氟塑料绝缘和护套控制电缆2KFFP氟塑料绝缘和护套屏蔽控制电缆3KFFR氟塑料绝缘和护套控制软电缆4KFFRP氟塑料绝缘和护套屏蔽控制软电缆5KFV氟塑料绝缘聚氯乙烯护套控制电缆6KFVP氟塑料绝缘聚氯乙烯护套屏蔽控制电缆7KFVR氟塑料绝缘聚氯乙烯护套控制软电缆8K。

每个电缆盘外侧应标明:a、制造厂名称或商标b、电缆型号及规格c、长度md、制造日期:年月e、标准编号f、毛重kg:g、表示电缆盘正确旋转方向的符号3、运输和保管a、线盘不允许平放b、运输中严禁从高处仍下装有电缆的电缆盘,严禁机械损失电缆。
PILC外围设备提供或需要的信号电平是多种多样的,而PLC内部CPU只能处理标电平信号,1/0接口要能进行电平转换。
为了提高PLC的抗干扰能力,I/0接口一般采用光电隔离和滤波功能。
为了便于了解I/O接口的工作状态,1/0接口还有状态指示灯。
通讯接口PLC配有通信接口,PLC可通过通信接口与监视器、打印机、其他PL计算机等设备实现通信。
PLC与编程器或写人器连接,可以接收编程器或写入器输入的程序;PLC与关打印机连接,可将过程信息、系统参数等打印出来;PLC与人机界面(如触摸屏)连接可以在人机界面直接操作PLC或监视PLC工作状态;PLC与其他PLC连接,可组成多机系统或连成网络,实现更大规模控制;与计算机连接,可组成多级分布式控制系统,实现控PL制与管理相结合。
产品描述导体:实芯铜导体,直径0.5mm绝缘:实芯聚烯烃线对:四对,色谱为:蓝/蓝白、橙/橙白、绿/绿白、棕/棕白缆芯:四芯绞合护套:阻燃PVC或低烟无卤外径5.6mm特性阻抗:100Ω产品应用10/100base—T以太网(IEEE802.3)10/100base—Tforethernet(IEE。
如:NHA-KVV即为A类耐火控制电缆四、技术参数的要求性能项目单位技术指标20℃时导体直流电阻≤Ω/km见聚氯乙烯绝缘及护套控制电缆中表3试验电压(5min)Kv3绝缘电阻≥MΩ.km1000耐火特性GB12666.6A或B类阻燃特性A或B类(按GB12666.5成束电缆燃。
阻燃耐火电线电缆 在相应的电线电缆型号前加“NH-”,低烟低卤加“NHD-”,低烟无卤加“NHW-”PVC绝缘耐火电线(耐火A级,阻燃或低烟低卤阻燃)氟塑料绝缘耐火电线(耐火A级,高阻燃)低烟低卤阻燃PVC绝缘和护套耐火电力电缆(耐火A级,成束燃烧A级)低烟低卤阻燃PVC绝缘和护套耐火控制电缆(耐。
HJVVHJVVP0.4-0.8mm5芯-200芯用于配线架至交换机或交换机内部各级机器间连接等(包括农村局用)。
4、HPVV100*2*0.5配线电缆使用特性:电缆敷设环境温度不低于-5℃。
电缆的弯曲半径不得低于电缆外经的20倍。

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/HHTZH009.2 refractory properties accord with GB12666.6 (IEC331) 1-90 re ?? 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
In addition, once the halogenated body reacts with the water in the air, it will generate "halogenated hydrogen acid", which will seriously corrode e and buildings and cause "secondary disasters".
交流接触器是一种应用非常广泛的电气元件,维修电工在工作中经常遇到。
现本人就工作中遇到的几种典型案例,来和大家分享一下。
这些案例大致分为以下几类:一:交流接触器的线圈电压等级问题二:动作频繁的交流接触器三:尺寸比较大的交流接触器四:工作环境中粉尘比较多的交流接触器下面来详细地一一介绍。
交流接触器的线圈电压等级问题我们在工作中,比较常用的交流接触器线圈的电压等级有:AC36V、AC220V、AC380V。
HYV主要用于语音信号传输。
结构:导线:实心退火铜线。
铜线直径为:0.4,0.5,0.6,0.7mm。
绝缘:高密度聚乙烯,并按照全色谱标准标明绝缘线的颜色绝缘线对:把单根绝缘线按照不同的节距扭绞成对,以最大限度减少串音,并采用规定的色谱组合以便识别线对。

外护套可制成聚乙烯或氯乙烯护套,自承式电缆是将缆芯与钢绞线平行挤制于同一“8字”葫芦形外护套之中。
主要电气性能:1.屏蔽通信电缆直流电阻:20℃,0.4≤1480.5≤95.00.6≤65.80.8≤36.6。
四、型号、名称、工作条件型号名称型号名称SYV-50-3实芯聚乙烯绝缘同轴射频电缆SYV-75-3实芯聚乙烯绝缘同轴射频电缆SYV-50-5-1实芯聚乙烯绝缘同轴射频电缆SYV-75-5-1实芯聚乙烯绝缘同轴射频电缆SYV-50-5-2实芯聚乙烯绝缘同轴射频电缆SYV-75-。
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