七:基本电缆规格及结构参数线芯*标称截面(mm2)导体结构(根数*直径)(B/R)mm电缆最大外径(mm)参考重量(kg/km)YVFRYVFRPYVFRYVFRP0-72-95-。
ZR-FV、ZR-KFF、KFFP、KFFP2、FV22 KFFR、KFFRP、KFFRP2、DJFPFP、DJFPFPR具体的型号有:ZR-KHF4、ZR-KHF4R、ZR-KHF4P、ZR-KHF4RP、KHF4、KHF4R、KHF4PR、KHF4P、KHF4RP、ZRC-KHF4、ZR-K。
Computer shielded cable; Purpose: high voltage insulation with small interface constant. Use to ground, and the screen, the total screen (or three quad twisted, group screening, group screen a total screen), such as structure form, with a small dielectric loss, the transmission ability is strong, resistant performance is good wait for a characteristic, can reliable transmission weak analog or digital, can be widely used in electricity, metallurgy, petroleum, chemical, textile sites detection and control of the door or by computer automation instrumentation, and general industrial computer. Relevant technical indicators: reference BS5308 IEC189 and British second, product code 1 and code the DJ - (series code) electronic computer shielded cable Y - (insulation code) high-pressure polyethylene F - (insulation code) fluoroplastic V - (sheath code) polyvinyl chloride (R - said many strands of soft wire core P - (block code) copper mesh shielding P1 tin plated copper mesh shielding P2 copper tape screened P3 aluminum-plastic composite membrane shielding for example 1:3, product specifications order 7 (14) to 1.0 was computer shielded cable can be represented as: (1) total shielding DJYVP7 * 2 * 1.0mm2 (2) partial shielding multiple strands of soft line DJYPVR7 * 2 * 1.0mm2 (3) total shielding type DJYPVP7 * 2 * 1.0mm2 Type (1) packet shielding DJYPV3 x 3 x 0.75 was (group 2) screen a total screen DJYPVP3 x 3 x 0.75 was three, model name and use range model name using range DJYVPDJYPVDJYPVP total shielding polyvinyl chloride polyethylene insulating sheath computer cable shielding polyvinyl chloride polyethylene insulation group sheathed electronic computer cable shielding total shielding polyvinyl chloride polyethylene insulation group sheathed electronic computer cable 1, fixed for laying indoors, in cable trench or pipe 2, cable long-term working temperature: - 20 ℃ + 65 ℃, the cable laying temperature is lower than 0 ℃, the bending radius should not less than 10 times of cable diameter DJYVPR DJYPVR DJYPVRP total shielding polyvinyl chloride polyethylene insulating sheath computer with a soft cable shielding polyvinyl chloride polyethylene insulation group sheathed computer with a soft cable shielding total shielding polyvinyl chloride polyethylene insulation group with a soft cable sheath computers shows that: (1) flame retardant cable (oxygen index greater than 30) need to add code "out" in front of the model. For example, zr-djypv zr-djypvp et al. (2) armored (steel belt armored) cables need to add code "22" in the lower right corner of the model, such as: DJYPV22 djypvpppvp22, etc. The cable is mainly used for ac or dc 300V or below and can work normally when 500V or below.
MHYV(HUW)聚氯乙烯绝缘阻燃聚氯乙烯护套矿用电缆0.5-0.8mm2-100对矿井中、阻燃场合MHYV(HUYV)聚氯乙烯绝缘阻燃聚氯乙烯护套矿用电缆MHYAV(HUYAV)聚乙烯绝缘铝塑护层阻燃聚氯乙烯护套通信电缆MHVV22(HUVV22)聚氯乙烯绝缘阻燃聚氯乙。

带钢丝绳的PVC行车控制电缆使用特性:额定电压:U0/U0.6/1KV及以下最高工作温度:100℃最低环境温度:固定敷设-40℃我厂在生产普通塑料绝缘控制电缆的基础上,近年来又开发了屏蔽和阻燃型控制电缆,深受广大用户欢迎。
比如和橙色线缠绕在一起的白色线,就叫做“橙白色线”(或者“白橙色线”);和蓝色线缠绕在一起的白色线,就叫做“蓝白色”(或“白蓝色线”)。
排线顺序有两个标准,分别叫做T568A和T568B——两种排法没有本质上的区别,在选择时有规定……敲黑板,这里很重要:两种接线顺序在选择上有两种选法:交叉线和直通线。
交叉线是指同一根网线的两个水晶头分别选用不同接法;直通线是指同一根网线的两个水晶头选用同一种接法。
多年来企业以“质量第一,用户至上,优质服务,信守合同”为宗旨,“诚信诚德、和谐共赢”的经营理念,坚持“以质量求存、以信誉求发展,今天的质量,明天的生存”的原则,人诚品优是我们的生命,**满足是我们的永恒,不求最大,但求**是我们的理念。
为实现电缆的阻燃或提高电缆的阻燃级别,人们研制开发出挤包所谓“隔氧层”或“隔火层”,作为填充或绕包隔火阻燃包带(隔火层)等新型结构的阻燃电缆,并把这种电缆叫做“隔氧(火)层”电缆。
其主要原理是在材料中添加了金属水合物成份,也可分别实现低卤低烟、无卤低烟和电缆的阻燃化。
(1)、低烟无卤电缆的阻燃等级根据GB/T规定的试验条件,低烟无卤电缆的阻燃等级分为A、B、C、D四个等级表1阻燃等级供火温度供火时间成束敷设电缆的非金属材料体积炭化高度自熄时间A≥815℃40min≥7升/米≤2.5米≤1hB≥815℃40min≥。
The dc resistance of the conductor conforms to GB/T3956

本安计算机电缆 型 号 电缆屏蔽结构及特征 铜芯PVC绝缘 铜芯PE绝缘 铜芯XLPE绝缘 IA-DJVPV IA-DJYPV IA-DJYJPV 本安型、编织分对屏蔽(铜丝或镀锡丝) IA-DJVP2V IA-DJYP2V IA-DJYJP2V 本安型、铜塑复合膜分对屏蔽 IA-DJVP3V IA。
电子计算机电缆适用于发电、冶金、石化等工矿企业集散系统、电子计算机系统、自动化系统的信号传输及检测仪器、仪表等,做连接线。
使用环境:1.工作温度:一般型不超过70℃,型号后带105的最高不超过105℃。
向SMD48(双字)写入所希望的初始值(若写入0,则清除)。
向SMD52(双字)写入所希望的预置值。
为了捕获当前值(CV)等于预置值(PV)中断事件,编写中断子程序,并指定CV=PV中断事件(事件号13)调用该中断子程序。
为了捕获外部复位事件,编写中断子程序,并指定外部复位中断事件(事件号15)调用该中断子程序。
执行全局中断允许指令(ENI)来允许HSC1中断。
9.执行HSC指令,使S7--200对HSC1编程。
自承式电缆芯结构:以25对为基本单位,超过25吃饭的电缆按单位组合,每个单位规定色谱的单位扎带绕扎,以便识别不同的单位。
100对及以上的电缆加有1%的预备对。
自承式电缆缆芯包带:用聚酯薄膜带绕包。
自承式电缆屏蔽:用轧纹或不轧纹金属带纵包子缆芯包带之外,两边搭接。
(5)综合护套铁路信号电缆的理想屏蔽系数≤0.8;铝护套铁路信号电缆的理想屏蔽系数≤0.3PTYV:聚乙烯绝缘聚氯乙烯护套铁路信号电缆PTYY:聚乙烯绝缘聚乙烯护套铁路信号电缆PTY22:聚乙烯绝缘聚氯乙烯护套钢带铠装铁路信号电缆PTY23:聚乙烯绝缘聚乙烯护套钢带铠装铁路信号电缆PTYA22:聚乙。