Since 2011, China has become a major cable manufacturing country in the world and is also known as a country with fast growth in wire and cable consumption. However, it must be acknowledged that the current per capita consumption level of wire and cable in China is only one-fifth of that of developed countries, equivalent to the level of Latin American countries, resulting in overcapacity in the domestic cable industry. In the future, with the increasing market demand for railway signal cables, it will drive the development of the domestic cable industry and open up a new world for domestic cable production enterprises.
This product is applicable to the transmission of control information, monitoring information and electric energy between signal control devices and equipment related to railway signal system track circuit with rated voltage of AC 750V or DC 1100V, train control automatic device and ground equipment of overspeed protection system, axle counter, station coding, microcomputer interlocking, computer monitoring, centralized dispatching, dispatching supervision, high-power electric switch machine, etc., which can be used as the transmission channel of digital information and business electricity of the bottom system of DMIS. When used for automatic blocking of ZPW2000 and UM71 non insulated track circuits, the transmission distance can reach 10km. Among them, the internally shielded railway digital signal cable separately shields the transmission four line group (divided into A type and B type, with the structure and cable group sequence arrangement shown in the schematic diagram), thereby improving the crosstalk attenuation at the near end of the cable and effectively solving the interference defense problem between each transmission line group when transmitting railway signal information of the same frequency in the same cable. To achieve the same frequency information and 2Mbit/s digital information transmission between signal systems and equipment, with the same cable and level of magnitude. It can be used in both electrified and non electrified railway sections. In addition to the basic type, this cable also has flame-retardant, anti termite, cold resistant, high shielding and other products used in special environments. In terms of cable manufacturing technology, the selection of main raw materials for cables is basically consistent with the IEC standards. The insulated conductive wire core adopts a three-layer co extrusion technology with horizontal skin foam skin trimming foam.