Use of railway signal cables
2024-04-27 16:05:22
Due to the expansion of the market capacity of railway signal cables, the market size of traditional railway signal cables is expected to maintain an annual consumption of about 30 million core kilometers. Some special cables, such as railway signal cables, marine cables, automotive wires, mining cables, and offshore oil extraction platform cables, will have a large increase in demand. For example, in the railway signal cable industry, according to the “Mid-and-Long-term Railway Network Plan†adjusted by the country in 2008, by 2020, the national railway operating mileage will reach 120,000 kilometers, and the double-line rate and the electrification rate will reach 50% and 60%, respectively, which are mainly busy. The trunk line has achieved a passenger and cargo sub-line, basically forming a railway network with reasonable layout, clear structure, complete functions, and smooth connection. The transportation capacity meets the needs of the national economy and social development. The main technical equipment has reached or approached the international advanced level. In the construction of the national railway network, railway signal cables are widely used and have a large number of applications in the construction of rail transit. They are an indispensable cable product for the construction of high-speed railways and rail transit.
Since 2011, China has leapt to the world's largest cable manufacturing country, also known as the world's fastest growing consumer of wire and cable, but have to face squarely is that at present, China's per capita wire and cable consumption level is only developed countries One-fifth, equivalent to the level of Latin American countries, causing excess capacity in the domestic cable industry. In the future, with the increasing market demand for railway signal cables, the development of the domestic cable industry will be greatly stimulated, opening up a new world for domestic cable manufacturers.
The railway signal cable is suitable for the control circuit of transmission railway signal, audio signal or automatic signal device for rated voltage AC 500V or DC 1000V and below, in which the integrated sheathing and aluminum sheathed railway signal cable has a certain shielding performance and is suitable for the electrified section. Or other areas with strong electrical interference.
Use features:
(1) The ambient temperature of the cable is -40°C~+60°C
(2) The long-term working temperature of cable conductors should not exceed +70°C. (3) Cable laying environment temperature: PVC sheathed cable should not be lower than 0 °C; polyethylene sheathed cable should not be lower than -20 °C.
(4) Permissible bending radius of cables: non-armoured cables shall not be less than 10 times the outer diameter of the cable; armoured cables shall not be less than 15 times the outer diameter of the cable.
(5) The ideal shielding coefficient of the integrated sheathed railway signal cable ≤ 0.8; the ideal shielding coefficient of the aluminum sheathed railway signal cable ≤ 0.3
Cables with a delivery length of 500 m and over shall not be less than 50% of the total length of delivery; 50-250 m short cable delivery lengths shall not exceed 5% of the total delivery length; cable length measurement errors shall not exceed ± 0.5 %. Delivery according to the length of negotiation between the parties
Since 2011, China has leapt to the world's largest cable manufacturing country, also known as the world's fastest growing consumer of wire and cable, but have to face squarely is that at present, China's per capita wire and cable consumption level is only developed countries One-fifth, equivalent to the level of Latin American countries, causing excess capacity in the domestic cable industry. In the future, with the increasing market demand for railway signal cables, the development of the domestic cable industry will be greatly stimulated, opening up a new world for domestic cable manufacturers.
The railway signal cable is suitable for the control circuit of transmission railway signal, audio signal or automatic signal device for rated voltage AC 500V or DC 1000V and below, in which the integrated sheathing and aluminum sheathed railway signal cable has a certain shielding performance and is suitable for the electrified section. Or other areas with strong electrical interference.
Use features:
(1) The ambient temperature of the cable is -40°C~+60°C
(2) The long-term working temperature of cable conductors should not exceed +70°C. (3) Cable laying environment temperature: PVC sheathed cable should not be lower than 0 °C; polyethylene sheathed cable should not be lower than -20 °C.
(4) Permissible bending radius of cables: non-armoured cables shall not be less than 10 times the outer diameter of the cable; armoured cables shall not be less than 15 times the outer diameter of the cable.
(5) The ideal shielding coefficient of the integrated sheathed railway signal cable ≤ 0.8; the ideal shielding coefficient of the aluminum sheathed railway signal cable ≤ 0.3
Cables with a delivery length of 500 m and over shall not be less than 50% of the total length of delivery; 50-250 m short cable delivery lengths shall not exceed 5% of the total delivery length; cable length measurement errors shall not exceed ± 0.5 %. Delivery according to the length of negotiation between the parties
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