As the "brain" of the subway, the Fuzhou Rail Transit Command Center will be responsible for the control and coordination of lines 1 to 4 and direct the operation of the subway lines. It is the core project of the entire Fuzhou subway project and a key infrastructure project in Fujian Province. The project is very cautious and professional in product selection.After repeated testing and comparison of various brand products by the expert group, KEG Handian brand products have been unanimously approved by the owner, the construction party and other expert groups with stable product performance indicators.

       The Fuzhou Rail Transit Command Center project is located at the northeast corner of the intersection of Guangda Road and Da Road, Taijiang District, Fuzhou City. The total construction area of the project is more than 69,000 square meters, of which the ground construction area is more than 48,000 square meters. It consists of a tower, a 21-story east tower, a 5-story middle tower and a 3-story basement. The highest top is 99.75 meters.

The project has accumulated 8,000 points of network voice information. Based on the characteristics of the above integrated rail transit cabling, KEG Korea Electric provides a solution of six types of low-smoke halogen-free flame-retardant shielded copper cables and low-smoke halogen-free flame-retardant optical cables with superior performance. To meet the special needs of subway integrated wiring. These products have been inspected in numerous rail transit projects and have received unanimous praise from the construction party and the owner.

KEG Korea Electric Group 6 low-smoke halogen-free flame-retardant shielded copper cable                       Six types of low-smoke halogen-free flame retardant shielding

KEG Korea Electric Group's six types of low-smoke halogen-free flame-retardant shielded copper cables (1) use six types of cables to meet the daily big data transmission of rail transit, ensure the scalability of the system, and meet the expansion needs.

(2) Use low-smoke halogen-free flame-retardant outer sheath. The amount of halogen acid (HCL) released during the combustion of the cable, the corrosiveness of the gas, the concentration of smoke, and the toxicity of the gas are the main factors that determine whether people can safely escape from the fire scene.

At present, power and communication cables laid in most parts of the world contain halogens. Such cables emit toxic mist-like chemicals when burned. At the scene of the fire, the halogen-containing cables will generate acid gas, which will damage the nose and throat of the personnel, and the smoke will also easily disorient the personnel and make it difficult to escape the fire. Therefore, low-smoke and halogen-free green environmental-friendly cables are used in the Korean electric rail transit system.

The characteristics of halogen-free cables are:

a. Does not contain halogen, does not generate harmful gases and corrosive gases

Phosphorous flame retardants are also excluded from the composition of halogen-free cables. When heated, this cable emits visible vapors with little toxicity.

b. Less smoke when burning

According to statistics, one-third of the people who died in the fire were suffocated because of inhaling the toxic gas released during the burning of wires and cables. Therefore, we proposed that cables should not only have good flame-retardant properties, but also have Once burned, the gas produced is free of halogen acids (harmful gases) and emits low smoke to ensure that people unfamiliar with the scene have the opportunity to escape.

d. Good anti-aging, can ensure network quality for a long time

Four pairs of PVC cables have a core insulation material of polyethylene (PE), so when using polyvinyl chloride (PVC) as the sheath material, after a period of time, the plastic oil on polyvinyl chloride (PVC) will self Moving to the sheath of the four pairs of wires will cause the polyethylene (PE) dielectric of the core wires to be changed, which will cause the transmission characteristics of the four pairs of wires to deteriorate. For example, if low-smoke halogen-free (LSZH) is used as the sheath material, because low-smoke halogen-free (LSZH) is a kind of PE material, and PE and PE contact for a long time will not cause movement. Therefore, it will not affect the insulation medium of the four pairs of cables, such as polyethylene (PE), and will not change the characteristics of the four pairs of wires, thereby ensuring the long-term quality of the cables.

(3) The use of aluminum foil shielded twisted pair has better performance, better security, and better stability. Korean electric shielded twisted pair has the following characteristics:

a. Can reduce pollution of electromagnetic environment

When we discuss how to make the network signal transmission more stable and increase the network bandwidth, we rarely consider that the twisted pair cable itself is also a source of high-frequency electromagnetic pollution. The working method of shielded cable will fundamentally solve the problem of electromagnetic pollution.

b. The confidentiality of the information is good

The use of shielded cables can fully ensure the information security of rail transit systems, passenger information security, and office information security.

c. Improve network transmission stability

The shielded cable fundamentally eliminates the interference of high-power traction equipment and cables on information transmission equipment and transmission cables. This improves the stability of data transmission on the medium. This guarantees the stability of the network and the reliability of the network.

d. More flexible application environment

Unshielded cables are susceptible to the surrounding environment due to their mode of operation, while shielded cables can reduce restrictions in this regard. The national standard GB50311 states that: when the electromagnetic interference field strength in the integrated wiring area is higher than 3V / m, a shielded wiring system should be used for protection; when an unshielded wiring system cannot meet the requirements of the installation site and the cable spacing is required, Shielded wiring system.

      The KEG Handian integrated wiring was successfully applied to the intelligent project of the Fuzhou Rail Transit Command Center this time, and contributed its own strength to the development of the rail transportation cause. We, the KEG Handian integrated wiring, will continue to work hard for the national foundation. Construction projects provide more positive energy.