5.电缆允许弯曲半径:非铠装电缆Zui小为电缆外径的6倍,铜带屏蔽或钢带铠装电缆Zui小为电缆外径的12倍。煤矿用控制电缆使用特性:电缆导体的长期允许工作温度为70℃,电缆敷设温度应不低于0℃。电缆允许的弯曲半径:对有铠装或铜带屏蔽结构的电缆应不小于电缆外径的12倍。
ZR-BPYJVP3交联聚乙烯绝缘聚氯乙烯护套铝聚酯复合膜绕包屏蔽变频电力电缆。阻燃电缆:由于电缆线路起火带来的危害,促使都把电缆的阻燃性放到日益重要的位置上,我公司生产阻燃电缆见表1-2。适用于交流额定电压U0/U=450/750V供电,监控等回路中。
电缆直埋安装时,1-35KV电缆直埋深度不小于0.7m。10KV及以下电缆平行安装时,相互净距不小于0.1m,10-35KV不小于0.25m;交叉安装时距离不小于0.5m。电缆敷设温度不低于0℃,弯曲半径:多芯电缆≥15(D+d),单芯电缆≥20(D+d),(D为电缆外径,d为导体外径)。
DJVP2V(R)P2聚氯乙烯绝缘铜带绕包分屏总屏聚氯乙烯护套计算机用屏蔽(软)电缆。DJVV(R)P3聚氯乙烯绝缘铝塑复合带绕包总屏聚氯乙烯护套计算机用屏蔽(软)电缆。DJVP3V(R)聚氯乙烯绝缘铝塑复合带绕包分屏聚氯乙烯护套计算机用屏蔽(软)电缆。

Sheathed control cable products use feature: the cable conductor oflong term working temperature should be allowed no more than 70 ℃.When the cable temperature under installation should not below 0 ℃,when laying bending radius should not less than 10 times of cablediameter. The cable with armor layer or copper band shieldingstructure shall not be less than 12 times the outer diameter of thecable.
两线制变送器因为信号起点电流为4mA.DC,为变送器供给了静态作业电流,一起外表电气零点为4mA.DC,不与机械零点重合,这种“活零点”有利于辨认断电和断线等毛病。并且两线制还便于运用安全栅,利于安全防爆。两线制变送器如图一所示,其供电为24V.DC,输出信号为4-20mA.DC,负载电阻为250Ω,24V电源的负线电位Zui低,它即是信号公共线,关于智能变送器还可在4-20mA.DC信号上加载HART协议的FSK键控信号。
Spin cassette XF5-273 communication cable transfer box, adoptingadvanced technology at home and abroad, in accordance with theinternational advanced standard production in the eighty s of cablewiring equipment, for the city, the town of telecommunicationnetwork backbone cable and wiring cable transfer. Features: 1. Theconnection jumper adopts rotary clamp-type connection and is sealedwith silica gel on the metal clip, because it is not only reliableand durable, but also easy to operate and repair without stripping.2. The wiring terminals in the handover box shall be arranged in 25pairs as a basic unit, consistent with the basic units of the localtelephone cables and marked with Numbers on the terminals tofacilitate construction and maintenance. 3. The structure,arrangement and installation dimensions of the wiring modules areexactly the same as those of 3M products and can be used for eachother. 4. The box body is treated by electrostatic spraying,beautiful and generous, with clear lines, good anti-corrosion andwaterproof performance and long service life. Main technicalparameters: the environment temperature: - 40 ℃ ~ + 65 ℃atmospheric pressure: 70 ~ 106 kpa relative humidity: 95% or lessis random ends and insulation resistance between terminals andground > 5 x 104 Μ Ω. When connecting any two ends and anyterminals and grounding to 1000V ac, there shall be no breakdown orflying arc in 1min. Contact resistance between wire and terminal< 5 x lO - 3 Ω.
KVV32聚氯乙烯绝缘,细钢丝铠装聚氯乙烯护套控制电缆敷设在室内、电缆沟中、管道、竖井内及地下,能承受一定的拉力作用。注:根据用户需要可生产阻燃性(ZR)和无卤阻燃型(ZRA)控制电缆。产品标准:Q/TYL411-91《聚氯乙烯绝缘和护套信号电缆》1、用途:本产品用于额定电压不大于250V的组织信号联锁、火警信号、电报及各种自动装置。
注:ZR-阻燃G-隔氧层NH-耐火三、生产范围型号芯数标称截面(mm2)型号芯数标称截面(mm2)额定电压(KV)额定电压(KV)0.6/10.6/16/6(6/10)8.7/10(8.7/15)26/35(26/45)CUALCUALCUA。
5、电缆允许弯曲半径:非铠装电缆不小于电缆外径的6倍本产品适用于及以下电器仪表的连接线和自动控制系统的传输线,它与普通塑料绝缘控制电缆相比,绝缘采用氟塑料,产品具有比普通控制电缆更高的耐热等级,具有耐油、防水、耐磨、耐腐蚀性气体、耐老化、不燃烧等优异性能,主要适用于冶金、电力、石化等行业具有移动耐温。

生产规格:对数2对—300对,导体直径为:0.4、0.5、0.6、0.7、0.8(mm)电缆对数型号(0.5)型号(0.5)5对HPVV5x2x0.5HPVVP5x2x0.510对HPVV10x2x0.5HPVVP10x2x0.520对HPVV20x2x0.5HPVVP20x2x0.。
氟塑料计算机电缆,氟塑料仪表电缆规格范围型号标称截面(mm2)成缆元件结构全部型号0.5~2.5对线三线组四线组1~241~121~7氟塑料仪表电缆主要技术参数序号项目单位指标试验方法1电缆结构及导体电阻符合GB/T标准(IEC60228:2004)GB/T3048。
1翻板液位计应(垂直)安装,连通容器与设备之间应装有(阀门),以方便仪表维修、调整。1当浮筒液位计的浮筒被腐蚀穿孔或被压扁时,其输出指示液位比实际液位(偏低)。1浮球式液位计可分为外浮式和(内浮式),外浮式的特点是(便于维修),但不适用于测量(过于黏稠)或(易结晶)、(易凝固)的液位。化工过程中测量参数(温度)、(成分)测量易引入纯滞后。2测量滞后一般由(测量元件特性)引起,克服测量滞后的办法是在调节规律中(加微分环节)。
NHB—KVV22适用范围:同NHB—KVV,用于能承受机械外力的场所,电缆弯曲半径不小于电缆外径的15倍。NHA—KVV22适用范围:同NHB—KVV22,用于要求耐火较为苛刻的场所。NH-VV阻燃聚氯乙烯绝缘和护套耐火控制电缆。
绝缘1绝缘应采用符合规定的高密度聚乙烯。2绝缘线芯采用颜色识别标志,绝缘颜色识别应均匀,并采用下列颜色:星绞:白、蓝、红、绿单元线组星绞组绝缘线芯按白、蓝、红、绿顺时针排列。在四线组外扎一标识扎带,扎带颜色:红、绿、白。