古县AZVP4X1.0+4X0.5屏蔽线缆盎然

古县AZVP4X1.0+4X0.5屏蔽线缆盎然

Purpose: the self-supporting non-filled cable is suitable for the urban and township telecommunication lines of local telecommunication network, and also for the special network lines connecting to the public network. It is economical and practical to use the same outer protective layer for hoisting line and cable. The mechanical and electrical properties of the cable remain unchanged under conditions of 30~C - 60~C. Structure: wire: annealed bare copper wire, copper wire diameter is 0. 4, 0. 50, 0. 60, 0. 70, 0. 80, 0. 90 mm. Insulating material: high density polyethylene or ethylene-propylene copolymer. The color of the insulated wire is in accordance with the full chromatographic standard. Pair of insulated wires: two different colored insulated wires are twisted in pairs according to different pitch and are identified by a specified chromatographic combination. Core structure: with 25 pairs as the basic unit, more than 25 pairs of cables are assembled according to the unit, each unit is wired with the unit of specified chromatogram to identify different units. 100 pairs or more of cables plus 1% of the reserve pair. Core tape: wrap with a polygrease film tape. Shielding: the two sides are overlapped with or without corrugated metal strip, beyond the cable core of the longitudinal capsule. The plastic film coated on the surface of the shielding belt and the bonding sheath of the protective layer: black low density polyethylene. Hoisting line: the hoisting line is 7 strands of galvanized steel strand, nominal outside diameter is 6. 3 and 4 mm. The tensile strength of two types of 75mm is not less than 3000kg and 1800kg respectively. The suspension wire is coated with thermoplastic paint to prevent the steel wire from corrosion. Identification and length marking
Railway cables are suitable for transmission under rated voltage ac 500V or dc 1000V and below. Product name, model, specification and scope: plastic insulation and polyurethane sheath railway cable PTYAH; PTYA; PZYA; PTYV; PTYY,; PTY22; PTY23; (PZY02; PZY03; PZY23 PZY22) 1/0.8mm (1/1.0mm) 2-48 core is suitable for railway communication, fire alarm, telegraph and other automatic devices with rated voltage ac 500V or dc 1000V or below. Poly (PVC insulation composite sheath steel tape armoured polyvinyl chloride sheathed PTYA23 PTYA22 PTY23 PTY22 PTYAH23 PZYA23 PZYA22 PZY23 PZY22 0.8 mm (1/1.0 mm) 4-61 core is fit for ac rated voltage 500 v or dc voltage 1000 v and below transfer audio and fixed laying railway and group control automation assembly line, can transport railway group general automatic letter, also can transmit the audio frequency shift automatic block and business calls. ? 4, using features: cable in - use under 40 ℃ to + 50 ℃. Cable conductor long-term working temperature shall not exceed 70 ℃. Ordinary sheath of the cable laying under the temperature below 5 ℃, resistance to sheath for - 10 ℃. The bending radius shall not be less than 15 times of the outer diameter of the cable (when laying) and shall be applicable to any horizontal difference

　　20世纪30年代中后期始有标志飞行场地或跑道边界的灯具。1953年以后，大型快速的涡轮螺旋桨飞机和喷气式飞机相继问世，驾驶员需要在更远的地方发现跑道，航空运量的不断增长也对飞行安全和航班正常提出了更高的要求。

　　HYAT铜芯实心聚烯烃绝缘填充式铝塑粘结综合护套市内通信电缆管道。HYA53铜芯实心聚烯烃绝缘铝塑粘结综合护套单层皱纹钢带纵包铠装聚乙稀护套市内通信电缆直埋。HYA23铜芯实心聚烯烃绝缘铝塑粘结综合扩套双层钢带绕包铠装聚乙烯护套市内通信电缆直埋。



Cross-linked polyethylene insulation 0.6/1kv control cables and flame retardant (ZR) can be manufactured as re

作为电工大军的一员，清楚的记得师傅带进门一个教的口诀便是“左零右火”并且要死记背下来。果然，在电工这条路上有着很大的帮助。但是仍有许多人不知道，接错的时候在一定程度上也没多大的影响，其实这样的想法很是不好，接错了危险可大了。像家里使用的排插或者是安装的插座，一般两孔的没有零火线区分，所以并不存在危险情况，而且都有外壳保护着危险性也较小。但是要是像墙上的插坐三孔的，火线和零线接反的话，那就危险了。我们假设家里使用的插排上带一个小开关的话，当大家把开关断开时，但这个插排还是带电的。

　　2、线径：0.4mm，0.5mm。3、导体：退火铜，镀锡铜。4、绝缘：聚氯乙烯（PVC）、阻燃聚氯乙烯（ZR-PVC）、聚乙烯（PE）、阻燃聚乙烯（ZR-PE）、低烟无卤阻燃（WDZ）。5、色序：白/蓝、白/红、白/绿，白/橙，白/棕，白/黄，白/紫，白/灰，白/黑等，也可用户指定.包装：盒装、胶袋装。

This product USES features: 1.1 the use of the cable temperature - 40 ℃ ~ + 60 ℃. 1.2 cable conductor long-term working temperature shall not exceed + 70 ℃. Cable laying temperature 1.3: PVC sheathed cable should not below 0 ℃; Polyethylene outer sheath cable should be not less than 20 ℃. 1.4 allowable bending radius of cables: non-armoured cables shall be no less than 10 times of the outer diameter of cables; The armored cable shall not be less than 15 times the outer diameter of the cable. 1.5 the ideal shielding coefficient of comprehensive sheathed railway signal cable is less than 0.8; The ideal shielding coefficient of aluminum sheath railway signal cable is less than 0.3
　　阻燃电缆事项设计人员应该根据阻燃电缆的，具体特性对阻燃电缆进行设计选用及敷设施工，并应注意以下几个问题：（1）由于含卤阻燃电缆（包括阻燃电缆、低卤低烟阻燃电缆）在燃烧时会释放具有腐蚀性的卤酸气体，大大阻碍消防工作从而耽误救火时间并加剧火势蔓延，因此在人口密度较高的公众场所应尽量设计选用无卤低烟阻燃电。

　　二：产品执行标准Q/HHTZH004.1阻燃耐火特性试验执行GB标准三：使用特性1．交流额定电压：U0/U450/750KV2．高工作温度：聚全氟乙丙烯(F46)绝缘不超过200℃可溶性聚四氟乙烯(PFA)绝缘不超过260℃3．低环境温度：聚氯乙烯护套：固定敷设-40℃，非固定敷设-15℃氟塑料。



　　6、铠装通信电缆电气特性：电缆符合基本电缆的全部电气要求。7、电缆长度：机械保护型电缆是根据相应基本电缆的标准长度制造。用途实心绝缘非填充型电缆用在交换区域做配线用，主要用于管道敷设，在架空安装时需要用吊线支承。

　　电缆地线芯绝缘采用具有抗氧化性能的K型B类低密度聚乙烯。聚乙烯的绝缘电阻高，耐电压好，介电系数小和介质损耗温度和变频率的影响也小，不但能满足传输性能的要求，而且能确保电缆的使用寿命。为了减少回路间的相互串扰和外部干扰，电缆采用屏蔽结构。

HB型混合式步进电机结构为两个导磁圆盘中间夹着一个永磁圆柱体轴向串在一起，两个导磁圆盘的外圆齿节距相同，与前述的VR型可变磁阻反应式步进电机转子结构相同，其两个圆盘的齿错开1/2齿距安装，转子圆柱永磁体轴向充磁一端为N极，另一端为S极。此种电机转子与前面叙述的PM型永磁步进电机转子从结构来看，PM型转子N极与S极分布于转子外表面，要提高分辨率，就要提高极对数，通常20mm的直径，转子可配置24极，如再增加极数，会增大漏磁通，降低电磁转矩；而HB型转子N极与S极分布在两个不同的软磁圆盘上，因此可以增加转子极数，从而提高分辨率，20mm的直径可配置100个极，并且磁极磁化为轴向，N极与S极在装配后两极磁化，所以充磁简单。

　　MKVV450/750V煤矿用聚氯乙烯绝缘聚氯乙烯护套控制电缆450/750V矿用控制电缆：|井筒信号电缆|MKVV22；MKVV32；MKVVR矿用控制电缆|煤矿用控制电缆|矿用阻燃控制电缆矿用控制电缆型号：MKVV；MKVV22；MKVV32；MKVVR；MKVVP矿用控制电缆电压：450/75。

　　产品描术：RS-485通讯电缆特性阻抗为120欧姆，导体为2*24AWG多股绞合镀锡铜丝，PE绝缘介质，由铝箔/聚酯复合带覆盖+镀锡铜丝90%覆盖共2层屏蔽，附有独立接地导线，工业灰色PVC外护套。