Rail Transit Electrical Fire Protection Solution

Electrical Fire Causes in Rail Transit

Rail transit has long lines, many points, enclosed environments, and dense populations; electrical equipment is compactly arranged, giving fire risk specific characteristics:

• Concentrated substation equipment: traction and step-down substations have dense high/low-voltage cabinets; a single-point fault has wide impact
• Unattended signal rooms: wayside signal equipment runs online for long periods, generating heat with no one to detect anomalies promptly
• Dense tunnel cables: through cables laid along tunnels; a single arc point may spread along the tray
• Limited evacuation conditions: deep underground spaces with limited entrances/exits make post-fire evacuation and fire-engine access difficult

Rail transit fire protection needs "active protection capability that does not rely on manual inspection" — the equipment is designed to detect and suppress at the incipient stage.

Solution Overview

This solution applies AFCP composite agile fire-control patches over hot points such as substation distribution cabinets, signal cabinets, and tunnel cable joints; EAPD devices monitor temperature and smoke anomalies in substations and signal rooms; and the ICOP platform manages electrical safety across multiple sites on the line — forming a rail transit active protection system of "local patch protection — real-time device monitoring — centralized platform control."

Overall approach: AFCP patches are mounted directly on busbar joints inside traction substation switchgear, on signal cabinet power modules and cable joints — key nodes of the rail transit power supply and signaling systems where a fire would cause serious service interruption. EAPD devices are deployed in unattended signal rooms and substations, continuously monitoring temperature and smoke parameters. The ICOP platform receives data from all sites along the line so the control center can view the safety status of all distribution and signaling equipment on one screen.

Typical Protection Points

Core Product Configuration

AFCP Composite Agile Fire-Control Patch

A single patch provides on-site protection, addressing electrical fire risks at the source:

• Passive and purely physical: no power or communication line required; works attached to the electrical equipment surface
• Point-to-point precision: attached to key heat points such as distribution cabinet busbars and signal power modules for targeted protection
• Resists environmental interference: adapts to the damp and temperature-varying underground environment; stable patch structure without failure
• No secondary damage: clean agent is non-conductive and residue-free, not affecting normal signal equipment operation

EAPD Electrical Active Protection Device

Very early warning that actively suppresses before a fire develops; it focuses on monitoring temperature and smoke anomalies in substations and signal rooms, reporting anomalies to the ICOP platform to gain response time for dispatch and maintenance staff.

ICOP Intelligent Integrated Operation Platform

Connects to EAPD data from substations and signal rooms across the line, displaying each site's electrical safety status in a unified view; graded alarms are pushed to dispatch and maintenance staff, with historical data review and trend analysis support.

Key Technical Parameters

Protection method	Active patch suppression + real-time device monitoring + centralized platform control
Extinguishing agent	AFCP clean extinguishing agent (non-conductive, residue-free)
Monitoring focus	EAPD real-time temperature / smoke anomaly monitoring
Deployment form	Maintenance-free patches; EAPD wall/cabinet mounted; ICOP at control center
Applicable equipment	Traction / step-down substations, signal cabinets, tunnel cables, platform distribution
Unified management	ICOP connects to multiple sites along the line; centralized monitoring at control center

Benefits After Deployment

Extended Application Scenarios

This solution also applies to railway traction substations, intercity rail distribution systems, and tram power supply systems. The core logic is consistent — patch coverage on power distribution and signal equipment, EAPD monitoring at key nodes, and ICOP line-wide management. It can also be combined with Liquid Shield coating to address dead corners in cable trays.

Standards and Compliance

This solution's technical approach references rail transit electrical fire protection design codes and the AFCP series enterprise standards, using clean non-conductive extinguishing agent suitable for active protection of energized power supply and signaling equipment. Combined with the EAPD device and ICOP platform, it follows the "monitoring — warning — local protection" active electrical protection technical direction.