Introduction to Cables for Railways - ZMS CABLE

With the continuous development of rail transport, demand for railway cables is also growing. The scale of investment in rail transit construction is large, and involves many industries.

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construction, metallurgy, electricity, communication signals, engineering machinery manufacturing and mechanical and electrical equipment manufacturing and many other industries can benefit from it.

Each of the industries involved, are inseparable from wire and cable. It can be said that the wire and cable manufacturing industry is one of the largest industries supporting. It is closely related to the development of rail transport.

There's a lot varieties of wire and cable for urban rail transport. Cables for railways can be divided into use in stations, use in lines and use in locomotives depending on the occasion of use.

According to the voltage level can be divided into high voltage, medium voltage and high voltage. According to the use can be divided into power supply, of control, wireless communication and instrumentation computer.

Railway cable requirements

Due to the environment of the rail transit operation, most cables used require low smoke and halogen free, flame retardant, fire resistant, oil resistant, UV resistant, Moisture resistant, waterproof, mildew resistant, rodent resistant, termite resistant, etc.

low voltage power cable, low smoke zero halogen cable, mica tape insulated flame retardant cable, the mineral insulated flame retardant cable and el cable coaxial, suitable for hot and humid climate, will have good market opportunities.

Railway transportation usually uses strong electricity for power supply.

Therefore, the construction of tunnels in the metro area, subway stations, equipment installation and fire safety requires a large number of power cables, communication cables, tunnel cables and RF cables.

Lighting cable and cable for tunnels and underpass stations are also in great demand..

Due to the construction of high-speed passenger lines, railway transponders will be used in large numbers.

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This will provide a large market space for railway transponder data transmission cables..

Types of railway cables

Wires and cables for rail transport mainly include direct current traction cables, fireproof cables, fire resistant cables, green wires, self temperature monitoring cables and other special cables.

Signal cables mainly include control cables, communication cables, optical communication cables, etc. coaxial cables and RF are mainly used in wireless communication systems.

Cable tension for railways

The voltage level of the railway contact network is between 25 KV y 30 Single Phase Frequency Alternating Current KV. For electric locomotives the voltage is 25 KV.

Taking into account the loss of tension, the output voltage of the traction substation is 27,5 KV of 55 KV. 55 KV is the AT power method, Mainly used on high-speed electrified railways. The contact network voltage of urban railways is usually 750V or V.

Railway cables, as the "nerves" and "blood vessels" of rail transit systems, are essential for power transmission, signal control, and data communication. With the advancement of intelligent and high-speed rail transit, the technical requirements for railway cables are continuously evolving. This article explores the types, technical requirements, application scenarios, and future trends of railway cables, highlighting their critical role in modern rail transit.

1. Power Cables: Transmit electrical energy, serving as the core power source for train operation. Single-core power cables are widely used in motors and converters due to their high current-carrying capacity.
2. Control Cables: Transmit control signals, such as speed and brake commands, ensuring safe and efficient train operation.
3. Signal Cables: Transmit track circuit signals, ensuring safe operation and efficient scheduling of trains.
4. Communication Cables: Support data transmission between trains and ground control centers, enabling intelligent operation.
5. Sensor Cables: Connect various sensors to monitor train status in real time, providing data for fault warnings.

1. High Conductivity: Copper or silver-plated copper conductors ensure efficient power transmission.
2. Weather Resistance and Durability: Cables must withstand high and low temperatures, UV exposure, and corrosion to adapt to harsh operating environments.
3. Anti-Interference Capability: Effective shielding ensures stable signal transmission in environments with electromagnetic interference.
4. Fire Safety and Environmental Protection: Cables must comply with fire safety standards and use low-smoke, halogen-free materials to minimize toxic emissions during fires.

1. High-Speed Railways: Require cables with high conductivity, tensile strength, and weather resistance to support stable train operation.
2. Urban Rail Transit: Cables in subways and light rail systems must adapt to complex layouts and high-frequency operations, ensuring safety and efficiency.
3. Signal Systems: Signal cables are crucial for track circuits, ensuring safe and efficient train scheduling.
4. Communication Systems: Communication cables enable data transmission between trains and control centers, supporting intelligent operations.

1. Intelligence: Integration of sensors and monitoring devices enables real-time cable status monitoring, fault warnings, and precise diagnostics.
2. Environmental Protection: Adoption of eco-friendly materials and processes reduces carbon emissions and promotes recyclable, low-smoke, and halogen-free cables.
3. High Performance: Development of advanced conductive and insulating materials enhances electrical performance and mechanical strength.
4. Standardization and Modularization: Standardized designs and modular manufacturing improve installation and maintenance efficiency.

Railway cables are a vital component of modern rail transit systems, directly impacting the safety, efficiency, and intelligence of train operations. With advancements in materials, manufacturing processes, and intelligent technologies, railway cables are poised to achieve greater performance, environmental sustainability, and functionality. These innovations will provide robust support for the continued development of rail transit, driving the industry toward a smarter and more sustainable future.