Electromagnetic Compatibility & Signal Integrity
“From Power to Signal: Building an Electromagnetic Barrier for Rail Transit.”
The complexity of modern high-speed railways lies in the high-density interweaving of strong and weak current systems. Our insight lies in the precision design of Common Grounding. Through precise equipotential zoning and LEMP protection, we ensure that during lightning strikes, the residual voltage of the signal system is controlled within microsecond tolerance ranges, guaranteeing zero bit errors and zero interruptions in train operation commands.
The railway industry's greatest fear is lightning-induced errors in signaling systems, which directly impacts operational safety. Variable geology along rail routes, with shared corridors for HV and LV systems, requires strict prevention of signal errors and system failures.
Signaling System Vulnerability
Modern railway signaling systems use numerous microelectronic devices that are extremely sensitive to LEMP. A single induced overvoltage can cause system paralysis.
Strong-Weak Current Interweaving
Traction power supply and signal communication systems coexist in high density within the same corridor, creating complex electromagnetic interference issues.
Zero Interruption Requirement
High-speed railways have extremely high requirements for operational reliability. Any signal interruption can cause serious operational accidents and economic losses.
Variable Geology Along Routes
Complex and variable geological conditions along rail routes, making grounding system design challenging.
Shared HV/LV Corridors
Traction power and signaling/communication share corridors, creating high lightning induction risk.
Signal Error Risk
Lightning induction can cause signal errors and system failures.
Elevating from "protecting buildings" to "protecting weak current systems and data transmission", providing comprehensive lightning protection solutions for rail transit.
Common Grounding Design
Through precision Common Grounding design, achieve coordinated shared grounding between traction power supply and signaling systems, effectively suppressing interference caused by ground potential differences.
Equipotential Zoning Protection
Using precise equipotential zoning technology, limit lightning current to specific areas, preventing cross-regional potential differences from damaging sensitive equipment.
LEMP Microsecond Protection
LEMP protection ensures that during lightning strikes, the residual voltage of the signal system is controlled within microsecond tolerance ranges, guaranteeing zero bit errors and zero interruptions.
Integrated Through Grounding System
Through grounding network for the entire route, ensuring electrical continuity.
HV/LV Physical Isolation Grounding
Effective isolation between HV and LV systems, preventing electromagnetic interference.
LEMP Protection System
Lightning Electromagnetic Impulse (LEMP) protection for sensitive electronic equipment.
Authoritative standards we follow
LEMP Protection Standard
Guide for Lightning Electromagnetic Pulse protection design
Grounding Equipment Standard
UL standard for grounding and bonding equipment
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