HYAC self-supporting cable: it is suitable for urban and township telecommunication lines of local telecommunication networks, as well as special network lines connecting to public networks. Messenger wire and cable with the same outer sheath, economical and practical, easy installation and laying HYAC HYAC cable ropeway communication cable HYAC messenger communication line HYAC steel strand cable duct standards: YD/T322-2013 in manufacuring hya communication cable (widely used in metropolitan area network, in the construction of communication network is given priority to with overhead and pipe installation, main transmission audio signal) HYAT filling type communication cable (used in metropolitan area network communication network construction, pipe installation
包覆:超纤维无纺布绕包。颜色:依据客户指定。护套:进口丁腈复合料柔性电缆专用护套。另外,可根据客户之特殊使用要求,为客户量身定做专用的拖链电缆。颜色:黑色或灰色。二、产品特点:1、可根据客户要求定做彩色线芯或编码线芯。
通信电缆(包括纸绝缘市内话缆、聚烯烃绝缘聚烯烃护套市内话缆)、长途对称电缆(包括纸绝缘高低频长途对称电缆、铜芯泡沫聚乙烯高低频长途对称电缆以及数字传输长途对称电缆)、小同轴电缆、中同轴和微小同轴电缆)、同轴海底电缆、同轴射频。
Fire - resistant cable refers to the cable which can keep safe operation for a certain period of time under the condition of flame burning. China's national standard GB12666.6 IEC331 (equivalent) will fire test points A, B two levels, A grade flame temperature of 950 ~ 1000 ℃, the duration for fire, 90 min, class B flame temperature of 750 ~ 800 ℃, for fire duration 90 min, during the whole test, the sample should be under the rated voltage value of the product. Fire-resistant cable is widely used in high-rise buildings, subway, underground street, large power stations and the important industrial and mining enterprises and other related to fire security and its lifesaving, for example, fire fighting equipment and emergency light guide emergency facilities such as power supply circuit and control circuit.

型号:ZRC-HYA阻燃通信电缆,WDZ-HYA无卤阻燃通信电缆,ZR-HYA阻燃通信电缆,MHYA矿用通信电缆技术特点:防火阻燃低损耗低色散结构紧凑良好的综合机械性能应用范围:适用于矿山、电厂、市内、近郊及局部地区,起到防火阻燃作用。
三相电机六个引出线头分不清首尾端,首先必须先判断别三相绕组的首尾端,才能进行电动机的Y形和三角形联结,定子绕组首尾端判别方法如下:用万用表判别一种方法是:首先用摇表或万用表欧姆档找出三相绕组每相绕组的两个引出线头。做三相绕组的假设编号UUVVWW2.再将三相绕组假设的三首三尾分别连接在一起,用上万用表,用毫安档或微安档测量,1。用手转动电动机转子,若万用表指针不动,则假设的首尾端均正确。若万用表指针摆动(如所示),说明假设编号的首尾有误,应逐相对调重调,直到万用表指针不动为止,此时连在一起的三首三尾正确。
This product is suitable for connecting cables and electrical instrumentation and automatic control of the transmission line, it is compared with the ordinary plastic insulated control cables, insulation using fluorine plastic, product is higher than normal control cable temperature classification, oil resistance, waterproof, wear-resistant, resistant to corrosive gas, ageing resistance, best can, is mainly used in metallurgy, electric power, petrochemical and other industries with special requirements such as heat resistance.
DJYP3V(R)P3聚乙烯绝缘铝塑复合带绕包分屏总屏聚氯乙烯护套计算机用屏蔽(软)电缆。DJYVP(R)22聚乙烯绝缘铜丝编织总屏聚氯乙烯护套钢带铠装计算机用屏蔽(软)电缆。DJYP(R)V22聚乙烯绝缘铜丝编织分屏聚氯乙烯护套钢带铠装计算机用屏蔽(软)电缆。
电缆的屏蔽要求是根据不同场合分别采用:对绞组合屏蔽、对绞组成电缆的总屏蔽、对绞组合屏蔽后总屏蔽等方法。屏蔽材料有圆铜线,铜带、铝带/塑料复合带三种。屏蔽对与屏蔽对具有较好的绝缘性能,电缆在使用中若屏蔽对屏蔽对之间出现电位差时,不会影响信号的传输质量。
产品在全国几十个煤业集团及矿山上使用,获得了较高的评价和赞誉。天津市电缆总厂第一分厂专业生产研发的市内通信电缆,电话电缆,大对数通信电缆,计算机电缆,通信设备电源线;铁路信号电缆,各种**性证书齐全,质量可靠。

每个电缆盘外侧应标明:a、制造厂名称或商标b、电缆型号及规格c、长度md、制造日期:年月e、标准编号f、毛重kg:g、表示电缆盘正确旋转方向的符号3、运输和保管a、线盘不允许平放b、运输中严禁从高处仍下装有电缆的电缆盘,严禁机械损失电缆。
电话线就是电话的进户线,连接到电话机上,才能打电话。HJVVHJVVP0.4-0.8mm5芯-200芯用于配线架至交换机或交换机内部各级机器间连接等(包括农村电话局用)。全聚氯乙稀配线电缆和局用电缆HPVV、HPVVP1、HPVV100*2*0.5配线电缆产品执行标准:GB。
检修工作方案。工作人员在完成电力设备的检修与维护工作后,应对设备的各项参数信息进行综合分析和评估,并将评估结果纳入电子资料库当中,为了进一步提高检修与维护工作质量,应针对当前的工作方案进行定期审视并予以调整和完善,做好设备的分类管理工作同时合理安排不同的维护检修计划和技改项目,此外还应注意新进设备的检修与维护,有针对性地对设备进行管理,保证相关工作的有序进行。提高设备的消缺管理力度。首先,在电力设备投入系统应用之前,工作人员一定要对不同设备的应用技术进行全面而系统性的了解和把握,参与设备的生产关键环节、出厂前验收、现场验收和安装过程。
本厂创建于1971年,是以生产销售各类煤矿用阻燃通信电缆、矿用屏蔽电缆,矿用屏蔽通信电缆,矿用电话电缆,矿用屏蔽信号电缆,矿用阻燃信号电缆,煤矿用阻燃信号电缆、矿用阻燃控制电缆,煤矿用阻燃通讯电缆、矿用电缆、矿用通信电缆、矿用信号电缆、矿用通讯电缆、,矿用控制电缆,矿用监控电缆、传感器电缆、信号电缆。

NHA—VV适用范围:同NHB—VV,用于要求耐火较为苛刻的场所。NHB—VV22适用范围:同NHB—VV,用于能承受机械外力的场所。NHA—VV22适用范围:同NHB—VV22,用于要求耐火较为苛刻的场所。