2X2X1.0计算机电缆扬中现货格软芯控制电缆RVVP10X1.0风铃
GWDZR-X隔氧层低烟无卤阻燃电缆NH-X耐火电缆敷设在对耐火有要求的室内、隧道及管道中,GNH电缆除耐火外要求高阻燃的场所。GNH-X隔氧层耐火电缆WDNH-X低烟无卤耐火电缆敷设在有低烟无卤耐火要求的室内、隧道及管道中,GWDNH电缆除低烟无卤耐火特性要求外,对阻燃性能有更高要求的场所。
煤矿用控制电缆 MKVVMKVV22MKVV32MKVVRMKVVRP MKVVP煤矿用控制电缆产品执行标准:MT煤矿用控制电缆用途:本产品适用于交流额定电压u0/u为450/750V及以下的控制监控回路及保护线路和配电装置中电器仪表的连接线。
电缆允许弯曲关径应不小于电缆外径的6倍,敷设温度应不低于0℃。1、产品用途:本产品适用于仪表、仪器及其它电器设备中的信号传输及控制线路。一、产品简介本产品适用于额定电压500V及以下对于防干扰性要求较高的电子计算机和自动化连接用电缆。
自承式全塑电缆(HYAC):自承式全塑电缆有同心式结构和葫芦型结构两种,常用的HYAC型自承式全塑电缆为葫芦型结构。导线:退火裸铜线,直径为、0.4、0.5、0.6、0.7、0.8、0.9;按照全色谱标准标明绝缘线的颜色。
If it is true that the products provided by our company are not in conformity with the re of the contract due to the problem of the products, we agree to the buyer to exchange or reject the products and return the goods.
同行们,电力危险和风险往往发生在一瞬间,或许在你毫无防备时猝然而至。变压器恢复送电时忙归忙,但别慌。尤其是倒闸操作时,务必更加重视细节,加强与调度沟通,认真核对和巡查继保装置(定值、压板、装置指示等)。对于重要的倒闸操作、检修作业等,认真对照调度规程、运行规程,仔细核对保护装置(压板)是否按照调度的要求正确投入或退出。同时,作业前须认真分析(继保)危险点及隐患,切实采取有效的安全措施,防止人为责任引起断路器误跳闸事件的发生。
内蒙古自治区:呼和浩特、包头、乌海、赤峰、通辽、宁夏回族自治区:银川、石嘴山、吴忠、中卫、固原。2、 交联聚乙烯绝缘、耐温耐候性好。3、 低传输阻抗,电磁兼容性好。4、 低工作电容5、 良好的抗干扰和低辐射性能。
钢带表面经涂塑处理,以防腐蚀和水份侵入。23,22型采用双层钢带绕包也有相似的性能。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。识别和长度标记:电缆外表有**性识别标记,标记间间隔不大于1m,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。
ZA-YJV22/ZB-YJV22/ZC-YJV22ZA-YJLV22/ZB-YJLV22/ZC-YJLV22交联聚乙烯绝缘钢带铠装聚氯乙烯护套A(B、C)类阻燃电力电缆适宜对阻燃有要求时埋地敷设,不适宜管道内敷设。
6、最低安装敷设温度:序号1~4-45℃序号5~140℃HYAC自承式电缆:适用于本地电信网的城市与乡镇电信线路,也适用于接入公用网的专用网线路。。主要用于管道敷没,在架空安装时需要用吊线支承。以25对为基本单位,25线对的基本单位也可由12对和13对2个子单位组成,50单位的超单位由二个12对和二个13对两个子单位组成,100对的超单位由四个25基本单位组成。
Products: this spell GB1270 the rated voltage up to and including 35 kv plastic insulated power cable, copper, aluminum core production, at the same time also can according to user needs electricity union recommendation of IEC, English, Germany and the United States.
RVVP is a kind of soft PVC insulated wire conductor and shield cable and PVC sheathed. Copper core PVC insulated shield PVC sheathed flexible cable voltage 300 v / 300 v 2-24 core purpose: installation of instruments, meters, intercom, monitoring, control scope of application: suitable for ac rated voltage up to and including 300/300 electronics, instruments and electronic e and automation devices such as shielding line executive standard s s GB5023.5 JB8734.5-1998-85 using feature s rated voltage: 300/300 v s rated temperature: AVP - 90, RVP - 90 type 900 C, the other shows characteristics of model 700 C s conductor: many strands of bare copper wire or tinned copper wires twisted s shielding ways: woven or inclined round (customer re) s conductor some conclusions: 1-24 core s insulation, RVP: (1) the AVP - 90-90: PVC/E PVC insulated (2) the AVP: PVC/C type PVC insulated (3) the rest of the models: PVC/D type PVC insulated s stranded: insulated conductor cable with filling (if any).
它们性质的差异使结型场效应管往往运用在功放输入级(前级),绝缘栅型场效应管则用在功放末级(输出级)。场效应管的工作原理和三极管其本一样,只是他们一个是压控型元件,一个是电流控制元件,场效应管只有一个PN结。场效应分类使用注意事项及检测方法:MOS场效应管比较“娇气”。这是由于它的输入电阻很高,而栅-源极间电容又非常小,极易受外界电磁场或静电的感应而带电,而少量电荷就可在极间电容上形成相当高的电压(U=Q/C),将管子损坏。
煤矿用阻燃信号电缆(现统称煤矿用阻燃通信电缆)MHYVR(PUYVR):聚乙烯绝缘聚氯乙烯护套矿用信号电缆,用于矿场作普通信号传输,可移动使用。MHY32(PUYV39-1):聚乙烯绝缘钢丝铠装聚氯乙烯护套煤矿用信号电缆,用于平巷或竖井或斜井作信号传输。
—使用特性1.标称特性阻抗:120Ω2.1kHz时的标称电容(导体-导体):42nF/km3.1kHz时的标称电容(导体-导体&屏蔽):75.5nF/km4.20℃时导体的直流电阻:≤90.9Ω/km5.标称传播速度:66%6.标称延迟时间:5.25ns/m7.1MHz时的标称衰减:19.7dB/k。
Model specification of frequency conversion cable: series code BP frequency conversion cable; Insulation code YJ crosslinked polyethylene insulation; V polyvinyl chloride sheath; E halogen-free low smoke polyolefin sheath; Shielding code P copper wire braided shielding; P1 copper wire wound shielding; P2 copper band shielding; P3 aluminum strip shielding; TP2 concentric conductor + copper band shielding structure; P1-2 double shielding of copper wire winding + copper tape wrapping; PX12 copper band shielding + tin coated copper wire braided double shielding; Armor code 22 steel belt armor; 32 steel wire armouring; Flame retardant code ZR common flame retardant type; WDZ low smoke halogen-free flame retardant type.
Inside the HYAC (overhead) conductor line diameter (mm) : 0.40, 0.50, 0.60, 0.63, 0.70, 0.80, 0.90 logarithms (yes) : 10-300