Application of Cables in Vehicle door Systems

Application of Cables in Vehicle door Systems

1. Scene Introduction

Rail transportation door system is an important part of the train, which is related to the safety of passengers and the normal operation of the train. With the development of the rail transportation industry, the stability and safety of the door system is getting more and more attention. As a key component of the door system for transmitting power and control signals, the quality and performance of cables directly affect the reliability of the door system.

2. Pain point analysis

Currently, the following problems exist in the use of rail transit door system cables:

Unstable signal transmission: Due to the frequent door switching action, the cable is prone to signal attenuation or interference during repeated bending and stretching, resulting in unstable door control signals.
Poor weather resistance: the car door system cable is exposed to the outdoor environment for a long time, which is susceptible to the influence of temperature, humidity, ultraviolet rays and other natural factors, resulting in cable aging and cracking.
Installation and maintenance difficulties: door system cable laying and installation space is limited, need to take into account the space layout of the train and the electromagnetic environment, while the cable maintenance and management also need professional technical support.

3. The door system on the cable requirements

For the characteristics of the door system, the cable needs to meet the following requirements:

High flexibility: to adapt to the frequent switching action of the door system, reduce the damage of the cable in the bending and stretching process.
Excellent signal transmission performance: ensure fast and accurate transmission of door control signals, reduce signal attenuation and interference.
Good weather resistance: able to operate stably for a long time under various harsh environmental conditions, resisting the influence of temperature, humidity, ultraviolet rays and other factors.

4. The certification standards

In order to ensure that the performance and quality of the door system cables meet the industry requirements, the cable products in this solution fully comply with the following international and domestic certification standards:

IEC 60349: the international standard for rail transit vehicle cables, which strictly stipulates the electrical performance, mechanical performance and environmental adaptability of cables.
EN 50264: European standard for cables used in rail transportation, which puts forward specific requirements for cables in terms of flame retardancy and oil resistance.
RoHS: A directive restricting the use of certain hazardous substances to ensure that cables are environmentally friendly during production and use.
GB/T 12706 is a Chinese national standard mainly applicable to extruded insulated power cables and their accessories with rated voltage from 1kV to 35kV.
TB/T 3159 is the Chinese railway industry standard, specifically for rolling stock cables.
In addition, TST CABLES products have been certified by quality management system (such as ISO 9001), environmental management system (such as ISO 14001) and product certification.

5.Cable selection

According to the special requirements of the door system, we recommend the following cable options:

Highly flexible shielded cable: Designed with special materials, it is characterized by high flexibility, abrasion resistance and bending resistance, and is suitable for the frequent switching action of the door system.
Low-smoke halogen-free flame retardant cable: low-smoke halogen-free flame retardant material is used in the outer layer of the cable to improve the safety performance of the cable and reduce the risk of fire.

6.Product Characteristics

The cable products in this solution have the following characteristics:

High flexibility: the cable has a small bending radius, easy to install and maintain, and adapt to the space layout of the door system.
Excellent signal transmission performance: the use of high-quality conductors and insulation materials to reduce signal attenuation and improve transmission efficiency.
Good weather resistance: the outer layer of the cable is made of special materials, which can resist the erosion of UV rays, humidity and other natural factors and prolong the service life.

Selection parameters for reference (can be customized according to actual needs)
Temperature resistance: -40°C to +125°C.
Rated voltage: 450/750V.
Voltage withstand test: 3000V/5min.
Minimum bending radius: 8 times the outer diameter of the cable (copper tape shielded cable should be not less than 12 times the inner diameter of the cable).
Fire resistance grade: Class A, B, C.
Conductor structure: bare copper, tin-plated.

Recommended Products

Door system cables are resistant to compression and abrasion, high temperatures, and play a vital role in the operation of the doors, facilitating the transmission of signals and power between the door control unit, sensors and actuators.

7.Technical Test

To ensure the performance and quality of the cable products, the car door system carries out a series of strict technical tests, including:

Flexibility test: test the performance of the cable under different bending radii to ensure that it meets the use requirements of the car door system.
Signal transmission test: simulate the working environment of the car door system, test the signal transmission performance and stability of the cable.
Weathering test: Place the cable in high temperature, low temperature, humidity and other harsh environments for a long time to verify its weathering performance.
EMI shielding: To ensure accurate data transmission and prevent interference, the cable should have effective electromagnetic interference (EMI) shielding.

8. Cable laying installation and commissioning

In the process of cable laying and installation, TST CABLES will formulate a reasonable cable routing plan according to the layout of the door system and the spatial structure of the train. At the same time, TST CABLES provides professional commissioning guidance to assist customers to complete the connection and commissioning of the cable and door control system to ensure the normal operation of the system.

9. After-sales maintenance & technical support

TST CABLES provides comprehensive after-sales maintenance and technical support services, including regular cable inspection, troubleshooting, repair and replacement. Our professional team will provide customers with technical support and solutions at any time to ensure the stable operation of the door system cable and customer satisfaction.

10.Practical application examples and related data

This solution has been successfully applied in rail transit lines in many cities.TST CABLES EN50264 series and EN50306 series cable products for rail transit have obtained CRCC certification. Over 500000 cables have been installed in more than 3500 high-speed rail coaches, running mileage of more than 6,000,000 kilometers. Taking the metro lines in Shenzhen, a large city in China, as an example, after adopting TST CABLES door system cable solution, the failure rate of the door system cable has been reduced by 100%, and the stability and response speed of the door switching action has been significantly improved. At the same time, the service life of the cable has been significantly extended due to its high weather resistance. In addition, we have collected a large amount of actual operation data to further verify the effectiveness and reliability of this solution.

Other solutions for cables in railway applications.


10 years of experience

Specializing in the production of railway cables for 10 years

Engineer-to-engineer one-on-one support

Engineers provide one-on-one service to assist with product selection and problem-solving

Customization according to requirements

With a strong R&D team, we support customized cables based on specific needs

Quality certification

Stringent adherence to industry standards, complete certification

Fully testing facilities

Various tests based on customer requirements

10,000 ㎡ factory

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