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
RVSP屏蔽双绞线;RVSP屏蔽双绞电缆RVSP(屏蔽双绞线,屏蔽电缆,屏蔽双绞电缆屏蔽双绞铠装电缆,并可提供屏蔽双绞铠装电缆技术咨询和屏蔽双绞铠装电缆的结构尺寸屏蔽双绞铠装电缆-屏蔽双绞铠装电缆大全-专业生产屏蔽双绞铠装电缆大型企业屏蔽双绞铠装电缆-屏蔽双绞铠装电缆大全-专业生产屏蔽双绞铠装电缆.。
电气性能:充气电缆主要电气性能:1.充气电缆直流电阻:20℃,0.4≤1480.5≤95.00.6≤65.80.8≤36.62.充气电缆绝缘电气强度:导体之间1min1kv不击穿导体与屏蔽1min3kv不击穿3.充气电缆绝缘电阻:每根芯线与其余线芯接地,HYA电缆大于10000MΩ.km4.充气电。
屏蔽带表面涂敷的塑料薄膜与护层粘接自称是电缆护套:黑色低密度聚乙烯。
自承式电缆吊线:吊线为7股镀锌钢纹线,标称外径为6.3mm和4.75mm两种,其抗张强度分别不小于3000kg和1800kg,吊线用热塑性涂料涂敷,以防钢丝锈蚀。

DJYPVR
3.下面重点讲一下接触器接触器380伏的和220伏的道理是一样的,今天主要讲380伏的接触器也可以做为220伏的接触器,接触器分为主触头和辅助触头,主触头是控制电源到负载端的,辅助触头是辅助控制接触器的,南瑟生香复制不留原文出处,菊花万人捅。
接触器的主触头和辅助触头上方接线柱和下方接线柱是断开的我们称为常开触点。
断开肯定不能通电也不能正常工作,那怎样才能让它正常工作呢?那就要通过线圈通电,接触器就会吸合,吸合以后上下四个接触点就联通了,也就是说A1和A2只要有电,接触器就会工作(A1和A2是接触器线圈的电源),线圈电源可以220伏也可以380伏,这样能理解吧停止按钮和启动按钮还有辅助触头的上下两个接触点来完成控制线圈的电源,达到控制接触器的作用,看下下图从上图我们可以看到从380伏A相火线直接给了接触器线圈的AI端,也就是说我们是控制另一根火线电源来控制接触器,C相火线给了断路器也就是保险丝,到了停止按钮,停止按钮不按是它就是通的,电源到了启动按钮。
9、低烟无卤阻燃电缆能经受GB12666.5规定的成束燃烧试验且燃烧时的烟浓度符合GB12666.7(IEC1034)的规定,燃烧析出气体水溶液的PH值≥4.3,导电率≤10μs/mm并符合IEC754-2的要求。
The shielding layer can not only restrain the electromagnetic wave from transmitting, but also act as a channel for short-circuit current, which can protect the neutral core. 6/10 kv dedicated cable frequency conversion motor, considering the cables, external force is often in the process of using radial outside the cable shielding layer increased galvanized steel tape armoured layer (between shielding layer and steel tape armoured layer of sleeve).
相关产品如下:1.矿用阻燃通信电缆 MHYVMHYAVMHY32 2.矿用阻燃信号电缆 MHYV(PUYV) MHYVR(PUYVR) MHYVP(PUYNP) MHYVRP(PUYVRP) MHY32(PUYV32)MHYV (1。
KYJVPKYJYP2KYJYRP交联聚乙烯绝缘聚氯乙烯聚乙烯护套铜带铜丝编织屏蔽控制电缆敷设在室内、电缆沟、管道内及地下,电缆具有防干扰能力。
JKVJKLVJKYJKLYJKYJJKLYJ聚氯乙烯/聚乙烯交联聚乙烯绝缘架空电缆用于架空电力传输等场所。

电缆任一绝缘线芯的电感与电阻之比均不大于50uH/Ω。
辐射电磁场在频率20-200MHz的范围内,场强为120dB(7mv)的电磁场中,电缆线芯内感应强度小于50dB。
缆抗外磁场能力:在频率为50Hz,强度为400A/m的外界磁场下,当电缆的一端输入频率为1KHz,电流强度在0-100mA变化时,电缆的另一端输入信号变化值不超过±50uA。
RVSP屏蔽双绞线;RVSP屏蔽双绞电缆RVSP(屏蔽双绞线,屏蔽电缆,屏蔽双绞电缆屏蔽双绞铠装电缆,并可提供屏蔽双绞铠装电缆技术咨询和屏蔽双绞铠装电缆的结构尺寸屏蔽双绞铠装电缆-屏蔽双绞铠装电缆大全-专业生产屏蔽双绞铠装电缆大型企业屏蔽双绞铠装电缆-屏蔽双绞铠装电缆大全-专业生产屏蔽双绞铠装电缆.。
1:开环控制系统开环控制系统框图开环控制描述:即系统的输出端和输入端之间不存在的影响,在自动控制学科中称之为无反馈回路,故把这种系统称之为开环控制系统。
2:人工控制在工业生产过程或生产设备运行中,为了维持正常的工作条件。
往往需要对某些物理量(如温度、压力、流量、液位、电压、位移、转速等)进行控制,使其尽量维持在某个数值附近,或使其按一定规律变化。
要满足这种需要,就要对生产机械或设备进行及时的操作和控制,以抵消外界的扰动和影响。
Rated voltage up to and including 35 kv cross-linked polyethylene insulating power cable which cable long-term allowed working temperature of conductor: 90 ℃ or less (2) when the short circuit (the longest duration of no more than 5 s) cables, the highest working temperature: 250 ℃ (3) in the air for laying a. Single core cable in parallel at the center of the distance: 185 was and below 2 times of the cable diameter: 240 was and above for 90 MMB. Ambient temperature: 40 ℃ directly buried laying a. Single core cable, is not contact 2 times the diameter of the center distance of cable b. ambient temperature: 25 ℃ c. soil coefficient of thermal resistance: Buried depth: 0.7m
HYA5x2x0.4HYA5x2x0.5HYA10x2x0.4HYA10x2x0.5HYA20x2x0.4HYA20x2x0.5HYA30x2x0.4HYA30x2x0.5HYA50x2x0.4HYA50x2x0.5HYA100x2x0.4HYA100x2x0.5HYA200x2x0.4HYA200。