如机床加工设备、物流输送系统、港口机械、成套设备安装工程。产品特点：可根据客户要求定做彩色线芯或编码线芯。采用优质PVC混合料，减小了电缆外径降低对安装空间的要求。设计使用循环弯曲寿命为500万次,实际使用已超过600万次。
ZR-BPVVP2聚氯乙烯绝缘和护套铜带绕包屏蔽变频电力电缆。ZR-BPVVPP2聚氯乙烯绝缘和护套铜丝编织铜带绕包屏蔽变频电力电缆。ZR-BPVVP3聚氯乙烯绝缘和护套铝聚酯复合膜绕包屏蔽变频电力电缆。
低烟无卤阻燃电线电缆用于用于建筑、医院、图书馆、体育馆、车站、机场、地铁、地下商场、或人口密集的公共场所等低烟、无卤素、阻燃、耐火、环保产品特性：低烟无卤电线电缆在火焰燃烧情况下产生极少量烟雾，释放的气体不含卤元素，当火灾发生时，可大大减少对仪器、设备和人体的危害的环保型电缆。
天联-煤矿用阻燃通信电缆型号规格大全煤矿用阻燃通信电缆|井筒信号电缆MKVV32MKVV22MHYA32传感器电缆，主传输电缆，监测电缆，瓦斯监控电缆低碳镀锡钢丝爆破线MHYVMHYV（1-10对）MHYAV（5-100对）MHYA对）MHY对）MHYVP(2-10对)MHYVRP（2。
HYAC_索道电缆吊线采用加粗刚纹线的方法把电缆的拉力增加3吨以上，还可以把RVVP电源线加入电缆中做成复合电缆，经济实用，安装敷设方便。在-30~C-60~C的环境条件下，自承式电缆的机械和电气性能保持不变。
(判断题)室外线路沿墙敷设，垂直敷设时，零线设在最下端参考答案：正确2、(判断题)导体的电阻与其材料的电阻率和长度成反比，而与其横截面成正比。参考答案：错误3、(判断题)再生发电制动只用于电动机转速高于同步转速的场合。参考答案：正确4、(判断题)IT系统中，安装在木结构或木杆塔上的电气设备的金属外壳一定要保护接地。参考答案：错误5、(判断题)接地电阻表主要由手摇发电机、电流互感器、电位器以及检流计组成。
②识别灯标。用规定的莫尔斯电码间歇地发出绿色闪光。在一个地区有几个机场时，每个机场设一个，发出不同电码以示区别。③进近灯。又名下滑灯。按照跑道类别，由十几个至一百多个灯组成进近灯光系统，帮助驾驶员对准跑道、调整飞机姿态和判断到跑道入口的距离；有时还在进近灯光系统的中线上加装一组由脉冲氙灯组成的顺序闪光灯。
23，22型采用双层钢带绕包也有相似的性能。3、铠装通信电缆护套：黑色高分子量低密度聚乙烯或聚氯乙稀护套。护套厚度可取决于基本电缆外径。5、铠装通信电缆标记内容有：导线直径、线对数量、电缆型号、长度、制造厂厂名代号及制造年份。
Integrated stranded railway signal cable implementation standard GB/ t2476-1993. Railway signal cables are suitable for transmission of railway control signals, audio signals or fixed cables for fixed installation in rated voltage ac 500V or dc 1000V or below. Product name, model, specification and scope: plastic insulation and PVC sheathed railway signal cable PTYAH; PTYA; PZYA; PTYV; PTYY,; PTY22; PTY23; (PZY02; PZY03; PZY23 PZY22) 1/0.8mm (1/1.0mm) 2-48 core is suitable for railway signal communication, fire alarm signal, telegraph and other automatic device systems with rated voltage ac 500V or dc 1000V or below. Polyethylene polythene insulation composite sheath steel tape armoured PVC sheathed railway signal cable PTYA23 PTYA22 PTY23 PTY22 PTYAH23 PZYA23 PZYA22 PZY23 PZY22 0.8 mm (1/1.0 mm) 4-61 core is fit for ac rated voltage 500 v or dc voltage 1000 v and below audio signal transmission and fixed installation of railway signal and group control automation assembly line, is of general automatic transmission railway signal, can also transmit frequency shift automatic block and business phone and other audio signal. 4, using features: cable in - 40 ℃ to + 50 ℃ environment use. Cable conductor long-term working temperature shall not exceed 70 ℃. Ordinary sheath of the cable laying under the environment temperature is not lower than 5 ℃, resistance to sheath for - 10 ℃. The bending radius shall not be less than 15 times of the outer diameter of the cable (when laying) and shall be applicable to any horizontal disturbance
Power cable -- power cable | cross-link cable -- cross-link cable | control cable -- control cable | railway cable ----- railway cable || soft cable -- soft cable |? | flame-retardant refractory cable -- flame-retardant refractory cable? | | plastic copper lines, plastic copper line lines to weave, weave | computer cable, computer cable: : - telephone line, telephone line | multi-fiber sheath, multi-fiber sheath - screen cap line | | screen cap line video line - video line | anti aging, anti aging cable | flame retardant control cable - flame retardant control cable, power - the power cord: : Lights with cable, lighting with | mining flame-retardant cable communications cables, mining flame-retardant communication cable | special cable HP HP | - special cable communication cable in the city - the city communications cables | | video monitor cable - video monitor cable | | high temperature resistant cable KFF - high temperature resistant cable KFF | with flame retardant cable soft structure of the telecom room (communication equipment power cord) RVVZ RVVZ22 ZA - RVV ZRVVR (6-240 was) expressway emergency telephone cable GHYAT GHYAT53 railway cable PZYA (PTYA) PZYA23 PTYA23 DJYJVP, DJYPV, DJYJPV, DJVPVP, DJYPVP, DJYJPVP, JVV, JVVP DJYPRV lights use cable DJ - JDKR - 500 - v 1 x2. 5 1 x4
VVZ; Features: special cable for transmission of power cable of switch, with advantages of easy bending and flame retardant. I. performance: a. Voltage grade: 600V/1000V? B, cable long-term working temperature 70 ℃?? C, fire resistant: GB/T126661, laying in the air, the surrounding temperature 30 ℃? 2, directly buried installation, ambient temperature of 25 ℃? 5. Compared with rvvz-flame-retardant, soft power cable, easy to bend, suitable for internal connection of power distribution in machine room, and also for cable use. VV - non-flame retardant, hard power cable, not easy to bend, suitable for fixed dressing. Zr-vv - flame retardant, hard power cable, not easy to bend, suitable for fixed dressing.
国标GB4706.1-1992/1998规定的电线负载电流值（部分）1平方铜芯线允许长期负载电流为:6A---8A1.5平方铜芯线允许长期负载电流为:8A---15A2.5平方铜芯线允许长期负载电流为:16A---25A4平方铜芯线允许长期负载电流为:25A---32A6平方铜芯线允许长期负载电流为。
PA54=1：驱动单元内部强制电机使能，而不需要外部输入信号SON。参数设置完成以后，保存后下电。2)手动运行步骤1.驱动器上电，显示R-0，是电机运行速度监视窗口。检查PA1参数是否和使用的电机代码一致。以上2步都无误后，进入“SR-/SR-RED”菜单下后，按↑、↓键开始运行电机。PLC控制运行伺服在手动调试下运行正常，现在进入PLC的上位控制，该控制中PLC的从伺服引入的IO如下：Input:SRDY——X2Output：PULS-:Y0SIGN-:Y1CCW:Y2CW:Y3SON:Y4为了控制方便，这里先把CCWCW信号使能屏蔽。
西门子PROFIBUS-DP总线电缆6XV1830-0EH10 6XV1830-0EH10参数如下： 导体: 裸铜丝,1*0.64mm导线面积：>0.34mmW线芯颜色: 绿色-红色 屏蔽层: 铝塑带+镀锡铜丝编织 护套: PVC 3DRX 22X 02R 特性阻抗: 150Ω 直流电阻: 57.5。
3×4.0、4×4.0、5×4.0、7×4.0。3×6.0、4×6.0、5×6.0、7×6.0。3×10.0、4×10.0、5×10.0。3×16.0、4×16.0、5×16.0。4×25.0、5×25.0。