Provides high-safety level control enclosures for rail transit, serving key systems such as signals and power supply.

• Adopts anti-vibration and flame-retardant design to ensure zero false alarms for train signals.

• Wide temperature operating range (-40~70℃) effectively reduces annual operation and maintenance costs.

• High protection level (IP54) ensures stable operation of equipment in harsh environments.

• Complies with industry certification standards to ensure system compatibility and safety.

DongAn Group Rail Transit Industry Solution Introduction

【Background】

In the rail transit industry, electrical control enclosures serve as the core carrier for train operation control, station electromechanical equipment management and signal transmission. Their operational stability, anti-interference capability, seismic performance and protection performance are directly related to the safety, punctuality and reliability of rail transit operation.

Relying on customized structural design, stringent quality control and optimization for harsh operating environments, DongAn Group’s electrical control enclosures are widely applied in metro, light rail, EMU and other rail transit scenarios. Covering core links such as train traction control, station ventilation and air conditioning control, and signal system control, they support the safe and efficient operation of rail transit with excellent adaptability, stability and weather resistance, and have won high recognition from industry customers.

【Case Introduction】

Application of Anti-interference and Seismic Control Enclosure in Metro Station Electromechanical System

When constructing a new metro line, a municipal rail transit group faced multiple challenges: the electromechanical equipment (ventilation and air conditioning, water supply and drainage, emergency lighting) of metro stations was widely distributed with complex operating environments. Conventional control enclosures suffered from weak anti-electromagnetic interference ability and insufficient seismic performance, and were prone to corrosion caused by humid and high salt-fog environments in underground stations. This would lead to control failure of equipment and abnormal signal transmission, undermining the normal operation and emergency response of the metro.

Solutions and Core Advantages of DongAn Group Electrical Control Enclosures.

1、Anti-electromagnetic Interference & Sealing Protection Design

The cabinet adopts an electromagnetic shielding structure equipped with special shielding materials, which effectively isolates strong electromagnetic interference generated by metro traction systems and signal systems. It ensures stable and distortion-free transmission of control signals and precise response of electromechanical equipment. Meanwhile, it features IP54 protection grade sealing design and is fitted with salt-fog and moisture-resistant sealing strips, preventing the intrusion of moisture, dust and salt fog in underground stations. This avoids dampness and corrosion of internal electrical components, perfectly adapting to the harsh operating conditions of underground spaces.

2、High-rigidity Seismic Structure Optimization

The enclosure is made of 2.0mm high-strength cold-rolled steel plate with a double-layer reinforced frame and ribbed design, delivering high overall rigidity to withstand vibration shocks generated by running metro trains. Internal electrical components are mounted with shockproof fixed brackets, and anti-loosening locking fasteners are adopted for wiring connections. This prevents component damage and wiring falling off caused by vibration, ensuring long-term stable operation of equipment.

3、Modular Intelligent Management & Control Design

Adopting a modular layout, functional partitions are designed for traction control, ventilation control, emergency control and other modules with standardized wiring and clear markings, facilitating equipment commissioning, maintenance and upgrading. Equipped with an intelligent monitoring module, it can real-time collect operating parameters such as cabinet temperature, current and voltage, and trigger automatic alarms in case of abnormalities. It realizes remote monitoring and predictive maintenance, reduces manual inspection costs, improves operation and maintenance efficiency, and meets the unattended operation requirements of metro systems.

Application Results

After adopting DongAn Group’s electrical control cabinets on this metro line, the operational stability of electromechanical equipment has been greatly improved. The failure rate caused by electromagnetic interference has dropped to zero, and equipment failures induced by vibration have been reduced by over 90%. The mean time between failures of equipment has been significantly extended. It effectively guarantees the punctual and safe operation of the metro line, greatly cuts operation and maintenance costs, and has been fully affirmed by the rail transit group.