耐高温视频线DLD-SYF靓丽75-2-1X16
射频同轴电缆主要适用于传输设备及及各类数字程控交换机,光电传输设备内部联结和配线架之间的信号传输,用于传输数据、音频、视频等通讯设备。
护套采用阻燃材料,安全系数高。采用先进的工艺生产,使电缆的阻抗均匀性好。多芯电缆在机架敷设中更加便捷。根据需要可生产阻燃、耐寒型、耐热型等有特殊要求的品种。
|MHYV mine cable |MHYVR mine cable |MHYVP mine shielded cable |MHY32 mine cable |MHYVRP mine shielded cable | mine monitoring cable? Mining cables, suitable for transmission in mines, can be used or fixed. ? Fire retardant cable for mine (now referred to as fire retardant communication cable for coal mine)? 1. Product adoption: mt818-1999? MHYVR (PUYVR)? (1 x 2? 1 x 4? 2 x 2? 3 x 2? 4 x 2? 5 x 2? 6 x 2? 8 x 2? 10 x 2?) Polyurethane polyurethane sheathed mine cable for general transmission in mine. ? MHY32 (puyv39-1)? (1 x 2? 1 x 4? 2 x 2? 3 x 2? 4 x 2? 5 x 2? 6 x 2? 8 x 2? 10 * 2) 1/1.0, 1/1.38 poly-insulated steel wire armored poly-chloride sheath coal mine cables are used for transmission in roadway or shaft or inclined shaft. MHYV (PUYV) (1 times 2? 1 x 4? 2 x 2? 3 x 2? 4 x 2? 5 x 2? 6 x 2? 8 x 2? 10 * 2) 1/1.0, 1/1.38 polyurethane polyurethane sheath coal mine cables are used for general transmission in mines and are suitable for fixed installation. MHYVRP? 7/0.30, 7/0.37, 7/0.43, 7/0.52 (1 ~ 10 pairs, 1 x 4) polyinsulated copper wire braided shielding PVC sheathed coal mine cables, used for transmission in places with large electric fields. ? MHYVP? (1 x 2? 1 x 4? 2 x 2? 3 x 2? 4 x 2? 5 x 2? 6 x 2? 8 x 2? 10 x 2?) * 7/0.30, 7/0.37, 7/0.43, 7/0.52 poly-insulated PVC sheathed coal mine cables, used for transmission in places with large electric fields and for fixed laying. ?
3、矿用控制电缆产品型号规格及范围: 矿用控制电缆型号 规格范围 使用场合MKVV,MKVVP,MKVVP2 0.5-10mm2,2-61芯 适用于弱电控制系统或强电磁场干扰区MKVV22,MKVV20 0.5-10mm2,4-61芯 MKVV32,MKVV30 0.5-10mm2,7-61芯 M。

同轴射频电缆:同轴射频电缆是最常用的结构型式。由于其内外导体处于同心位置,电磁能量局限在内外导体之间的介质内传播,因此具有衰减小,屏蔽性能高,使用频带宽及性能稳定等显著优点。目前,常用的有两类:50Ω和75Ω的射频同轴电缆。特性阻抗75Ω射频同轴电缆常用于,故称为CATV电缆,传输带宽可达1GHz,目前常用CATV电缆的传输带宽为750MHz。
对称射频电缆:对称射频电缆回路其电磁场是开放型的,由于在高频下有辐射电磁能,因而使衰减增大,并导致屏蔽性能差,再加上大气条件的影响,通常较少采用。对称射频电缆主要用在低射频或对称馈电的情况中。湖州耐高温视频线DLD-SYF75-2-1X16靓丽
锉刀按剖面形状分有扁锉(平锉)、方锉、半圆锉、圆锉、三角锉、菱形锉和刀形锉等。平锉用来锉平面、外圆面和凸弧面;方锉用来锉方孔、长方孔和窄平面;三角锉用来锉内角、三角孔和平面;半圆锉用来锉凹弧面和平面;圆锉用来锉圆孔、半径较小的凹弧面和椭圆面。锉刀按锉纹形式分单纹锉和双纹锉两种。单纹锉的刀齿对轴线倾斜成一个角度,适于加工软质的有色金属;双纹锉刀的主、副锉纹交叉排列,用于加工钢铁和有色金属。它能把宽的锉屑分成许多小段,使锉削比较轻快。
螺旋射频电缆:同轴中的导体,有时可做成圈状,借以增大电缆的电感,从而增大了电缆的波阻抗及延迟电磁能的传输时间,前者称为高阻电缆,后者称为延迟电缆。如果螺旋线圈沿长度方向卷绕的密度不同,则可制成变阻电缆。
实体绝缘电缆:在这种电缆的内外导体之间全部填满实体高频电介质,大多数软同轴射频电缆都是采用这种绝缘型式。
空气绝缘电缆:电缆的绝缘层中,除了支撑内外导体的一部分固体介质外,其余大部分体积均是空气。其结构特点是从一个导体到另一个导体可以不通过介质层。空气绝缘电缆具有很低的衰减,是超高频下常用的结构型式。
最小弯曲半径:无铠装电缆应不小于电缆外径的6倍;有铠装电缆应不小于电缆外径的12倍℃。三、BV电线BV线用途一般用途单芯硬导体无护套电缆,适用于交流电压450/750V及以下动力装置、日用电器、仪表及电信设备用的电缆电线。
This company produces the type refractory power cables for rated voltage 0.6/1 kv copper core cable, can also produce low smoke zero halogen fire-resistant power cable, high flame retardant fire-resistant power cable oxygen insulation layer, the fire-resistant performance in line with the GB/T12666.6 cable fire resistance test method. Therefore, the overall performance of refractory series power cables is good and reliable. The water resistance performance of fireproof cable conforms to iec 502-2.

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。对有屏蔽层结构的软电缆,应不小于电缆外径的6倍。对无铠装层的电缆应不小于电缆外径的6倍。本产品是阻燃类产品。二、执行标准 MT818.《煤矿用阻燃通信电缆》及企业标准Q/JG。
Summary: fire-resistant cable refers to the cable which can keep safe running for a certain 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. Purpose: fireproof cables are 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.
半空气绝缘电缆:这种结构型式是介于上述两种之间的一种绝缘型式,其绝缘也是由空气和固体介质组合而成,但从一个导体到另一个导体需要通过固体介质层。
射频电缆按绝缘材料分类:塑料绝缘电缆、橡皮绝缘电缆及无机矿物绝缘电缆。
射频电缆按柔软性分类柔软电缆、平软电缆及刚性电缆等。射频电缆按传输功率大小分类0.5千瓦以下的低功率、0.5—5千瓦率、5千瓦以上的大功率电缆。低衰减、低噪音、微小型及搞稳相电缆等。射频电缆的衰减与导体,介质,结构尺寸,工艺水准和工作的频率都有关。
在拆除高温熔体压力传感器之前,应确认机筒的温度足够高,机筒内部的物料处于软化状态下。防止压力过载即使传感器测压范围的过载设计最高能够达到5%(超出最大量程的比率),从设备运行的安全角度考虑也应该尽量避免冒险,**选择被测压力处于量程范围之内的高温熔体压力传感器。在通常情况下,所选高温熔体压力传感器的**量程应该是被测压力的2倍,这样即使挤出机在极高的压力下运行,也能避免高温熔体压力传感器受到损坏。
阻燃电缆标准电缆涉及火灾安全的主要技术指标是CO2电缆的阻燃性、烟雾的密度和气体的有毒性。美国防火标准较关注前两个问题,但是欧洲和美国对火灾安全有着完全不同的观点。美国传统的概念认为:火灾的根源在于一氧化碳(CO)毒气的产生以及其后的燃烧过程中CO转化为CO2的热释放,因此,控制燃烧过程中的热释放量可减少火灾的危害。