BVR2.5平方电线格青州厂家直供****MHYAV20X2X1/0.8通信电缆内向
矿用电缆防火性能分析防火机理分析阻燃机理在燃烧反应的热作用下,位于凝聚相的阻燃剂分解吸热,使凝聚相内温度上升减慢,延缓了材料的热分解速度;阻燃剂受热分解后,释放出连锁反应自由基阻断剂,使火焰、连锁反应的分支中断,减缓了气相反应速度;催化凝聚相热分解固相产物,焦化层或泡沫层的形成加强了这些层状硬壳阻碍。
HYA553铜芯实心聚烯烃绝缘挡潮层聚乙烯护套单层纵包轧纹钢带铠装聚乙烯套市通信电缆HYAT553铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套双层纵包轧纹钢带铠装聚乙烯套市内通信电缆ZRCHYA铜芯实心阻燃聚烯烃绝缘挡潮层聚乙烯护套单层纵包轧纹钢带铠装聚乙烯套市通信电缆传输音频、150。
型号规格:JYPV-1铜芯聚乙烯绝缘聚氯乙烯护套铜丝编织分屏蔽电子计算机电缆JYPV-2铜芯聚乙烯绝缘聚氯乙烯护套铜丝编织分屏蔽及总屏蔽电子计算机电缆JYPV-3铜芯聚乙烯绝缘聚氯乙烯护套铜丝编织总屏蔽电子计算机电缆JYP2V-1铜芯聚乙烯绝缘聚氯乙烯护套铜/塑复合膜分屏蔽电子计算机电缆JY。
传感器信号电缆采用镀银导体,多芯结构,确保每芯之间电阻保持高度一致,可以将微弱的电量信号准确传输到数百米外。矿用信号电缆型号:MHYV;MHYVR;MHYVRP;MHYVP;MHY32;MHYBV;MHJYV矿用信号电缆执行标准:MT818.矿用信号电缆用于作煤矿井下监测、控制系统中低频信号传输线。
Flexible cable RVVT, RVV RVVTP resistance to bending RVVPT RVVT detail TRVV flexible cable, cable RVVTP RVVPT bending resistant cable type: TRVV connection and control using the flexible cable, widely used in dry or wet indoor, reciprocating bend free mobile no compulsory pull drag chain system. Such as machine tool processing e, logistics delivery system, port machinery, complete e installation engineering. Product features: according to customer re, color core or coding core. High PVC mix is adopted to reduce the re of cable outer diameter for installation space. The designed cycle bending life is 5 million times, and the actual use has exceeded 6 million times. Cable structure: conductor: using multi-strand fine ground and other fine twisted into a bundle conductor oxygen-free copper wire, conform to DIN VDE 0295 grade 6 insulation: high PVC mixture color: color line core or coding line core 3 core + yellow or green conductor sheathed: high PVC mixture color: black, grey, orange electrical characteristics: rated voltage U0 / U < 0.5 was 300/300 V p o. 5 was 300/500 V test voltage: 3000 V U meet DIN VDE 0281 part 2 temperature range: ℃ mobile installation: fixed installation: - 5 ℃ ~ + 70 ℃ and 30 ℃ ~ + 70 ℃ when continuous movement, the minimum bending radius: 7.5 x cable diameter
在并联电路中,支路电流的大小与支路电阻的大小成反比。改变Ip和IR两支路阻值的大小,即可改变电流分配比例,实现量程的转换。如下图所示。当被测电流I1从A端输入时,IP支路电阻为R0,IR支路电阻为R1+R2+R3。而当被测电流I3从A的3端输入时,Ip支路的电阻为R2+R1+R0,IR之路的电阻为R3。可见,当表头指示相同(IP相同)时,I3I1,扩大了量程。读数方法电流表指示的读书方法是:满刻度值(刻度线最右边)等于所选量程档位数,根据表针指示位置折算出测量结果。
电缆型号、名称、规格及用途型号名称规格用途MKVV铜芯聚乙烯绝缘聚氯乙烯护套阻燃矿用控制电缆(2-14)**(0.75-2.5)铺设在室内、电缆内、管道等固定场合MKVV22铜芯聚乙烯绝缘聚氯乙烯护套钢带锴装阻燃煤矿用控制电缆(7-61)*(0.75-1.5)(。
识别和长度标记:电缆外表面有**性识别标记,标记间隔不大于1m,标记内容有:导线直径,线对数量,电缆型号,制造厂厂名代号及制造年份,长度标记以间隔不大于1m标记在外表面上,但与上述标记错开。其他结构:根据用户需要,可提供有加强机械保护层的铠装电缆HYAT53,HYAT55及高频隔离电缆YATG。
通信设备电源线产品标准:YD/T产品型号:ZA-RVV(ZRRVVZRVVRRVVZ)通信电源用阻燃软电缆ZA-RVV22(ZRRVV22ZRVVR22RVVZ22)通信电源用阻燃钢带铠装软电缆本产品适用于架空、管道、室内电缆沟、地下直埋。
使用特性:电缆可使用在70度及以下。具有较高的熔融温度,适宜的粘度和良好的低温韧性;热稳定性和抗水性优异;电绝缘性能强、损耗小,与电缆内外护套的相容性好,是一种优良的加热应用型电缆填充复合物。综合纽绞铁路信号电缆执行标准GB/T。
产品具有结构紧密、性能稳定、安装方便,广泛用于通讯、导航、电子对抗、预警系统、海洋勘探、各种测试设备用综合电缆。可根据用户要求将多根信号线、电源线、屏蔽线、同轴射频电缆等组合成一根可带总屏蔽的组合电缆。
BPYJVP12-TK铜芯交联聚乙烯绝缘聚氯乙烯护套铜带绕包铜丝编织双重屏蔽变频器用回路电缆。ZRBPYJVP12-TK铜芯交联聚乙烯绝缘阻燃聚氯乙烯护套铜带绕包铜丝编织双重屏蔽变频器用回路电缆。BPYJVPX12R-TK铜芯交联聚乙烯绝缘聚氯乙烯护套铜带绕包镀锡铜丝编织双重屏蔽变频器用回路电缆。
塑料线槽及其附件型号规格应符合设计要求,并选用相应的定型产品。其敷设场所的环境温度不得低于-15摄氏度,其阻燃性能氧指数不应低于27%。线槽内外应光滑无棱刺,不应有有扭曲、翘边等变形现象,并有产品合格证。缆线布放时应有冗余。在机柜处,双绞线缆预留长度,一般为3~6m;终端处为0.3~0.6m;光缆在设备端预留长度一般为5~10m;有特殊要求的应按设计要求预留长度。设备间铺设活动地板时,板块铺设严密坚固,每平方米水平允许偏差不应大于2mm,地板支柱牢固,活动地板防静电措施的接地应符合设计和产品说明要求。
YJV32YJLV32YJV33YJLV33YJV42YJLV42YJV43YJLV43交联聚乙烯绝缘聚氯乙烯/聚乙烯护套钢丝铠装电力电缆敷设在高落差地区,电缆能承受机械外力作用及相当的拉力。2、可根据用户要求,生产0.6/1KV圆形导体结构或扇形导体结构的各类五芯电缆。
HYAC- cableway communication cable - detailed introduction of chromatographic combination for identification. Self-supporting cable core structure: taking 25 pairs as the basic unit, more than 25 pairs of cables are assembled according to the unit, and each unit is designated as the unit binding band of chromatogram in order to identify different units. 100 pairs or more of cables plus 1% of the reserve pair. Self-supporting cable core tape: wrapped with polyester film tape. Self - bearing cable shield: with or without corrugated metal strip longitudinal package cable core belt, both sides lap. The plastic film coated on the surface of the shielding belt and the bonding of the protective layer claim to be cable sheath: black low density polymer. Messenger messenger wire: suspension wire for 7 strands galvanized steel ridge, nominal diameter of 6.3 mm and 4.75 mm, its tensile strength is not less than 3000 kg and 1800 kg respectively, suspension wire with thermoplastic paint coating, to prevent corrosion of steel wire. Messenger cable identification and marking: cable exterior sex identification mark, mark at no more than alternate 1 m intervals, tag contents are: the diameter of wire, line number, cable type, factory name and year of manufacture, marking at no more than alternate 1 m intervals to mark on the surface
MHY32(PUYV39、PUYV39-1)矿用聚乙烯绝缘阻燃聚氯乙烯护套单层钢丝铠装井筒矿用信号电缆用于斜井或竖井中作主信号电缆MHYVRP(PUYVRP)矿用聚乙烯绝缘阻燃聚氯乙烯护套铜丝编织屏蔽软矿用信号电缆用于井下平巷或斜巷作矿用信号电缆MHYVP(PUYVP)矿用聚乙烯绝缘阻燃聚氯乙烯护套。
型号及名称2271EC52(RVV)铜芯聚氯乙烯绝缘聚氯乙烯护套(圆型连接软电线)2271EC52(RVV)主要技术参数标称截面芯×(mm2)线芯结构芯×根/直径电线参考数据外径(mm)重量(kg/km)20℃时导体电阻(Ω/km)不大于下限上限2×0.52×16/0.2。