Indirect Low Pressure Fire Suppression System Technology , Electrical Panels tube based automatic fire gas suppression system
27-Nov-2025
The Indirect Low Pressure (ILP) Fire Suppression System for Electrical Panels & Switchgear is an advanced automatic clean agent fire suppression solution designed to protect LV, MV, and HV electrical panels, switchgear, MCC panels, PCC panels, and control cabinets from fire hazards caused by short circuits, overheating, arcing, loose connections, and insulation failure.
In an ILP fire suppression system, the extinguishing agent such as Novec 1230, FM-200, or CO2 is stored in a low-pressure cylinder and released indirectly through engineered discharge nozzles. Fire detection is achieved using Linear Heat Sensing (LHS) cable, smoke detectors, or heat detectors installed inside the electrical enclosure. Upon detection, the system triggers rapid agent discharge to suppress Class A, B, C and electrical fires without water, residue, or damage to sensitive components.
Designed as per NFPA-2001, BIS, IS 2189, and ISO standards, the ILP fire suppression system for electrical panels ensures fast response, high reliability, minimal downtime, and low maintenance. It is ideal for industrial plants, data centers, substations, commercial buildings, EV charging infrastructure, and critical power facilities, providing safe, compliant, and damage-free fire protection.
An Indirect Low Pressure Fire Suppression System is an automatic fire protection system where the detection mechanism and extinguishing discharge operate independently. Heat detection is achieved through external sensors such as heat sensing tubes or linear heat detector cables, which trigger a valve or solenoid to release a clean extinguishing agent stored at low pressure.
Unlike direct systems where the tube itself bursts and releases the agent, indirect systems use controlled nozzles for precise and uniform distribution, making them ideal for electrical environments.
Electrical enclosures present unique fire risks:
Confined spaces cause rapid heat build-up
Flammable insulation materials
High electrical load concentration
Delayed detection due to closed cabinets
Risk of total panel failure
Indirect low pressure systems offer fast response and minimal collateral damage, preserving expensive electrical components and maintaining operational continuity.
Heat Detection
Heat sensing tube or Linear Heat Detection (LHD) cable monitors the internal temperature of the panel.
Trigger Activation
When the preset temperature is reached, the detection line triggers a mechanical actuator or solenoid valve.
Agent Discharge
The low pressure cylinder releases agent through a network of calibrated nozzles.
Fire Suppression
The clean agent suppresses the fire by cooling, oxygen displacement, or chemical interruption.
System Reset / Alarm Notification
Alarms and system indicators signal activation for prompt maintenance.
Low Pressure Agent Cylinder (CO2 / FM-200 / Novec 1230)
Heat Sensing Tube / Linear Heat Sensor Cable
Solenoid Valve or Mechanical Actuator
Nozzle Distribution Network
Pressure Switch
Control Panel Interface
Manual Release Mechanism
Alarm & Monitoring Unit
Mounting Brackets & Fittings
CO2 (Carbon Dioxide)
FM-200 (HFC-227ea)
Novec 1230 (FK-5-1-12)
Inert Gas Mixtures
These agents are residue-free, non-conductive, and safe for electrical systems.
LT & HT Panels
MCC & PCC Panels
Distribution Boards
Switchgear Cabinets
Transformer Control Panels
VFD Panels
PLC Control Panels
Substation Panels
UPS Panels
Controlled and precise discharge
Reduced system pressure risk
Safe for sensitive electronics
Uniform agent coverage
Early fire detection
Minimal false activation
Easy scalability
Complies with global safety norms
NFPA 2001 – Clean Agent Fire Extinguishing Systems
NFPA 12 – CO2 Systems
ISO 14520
UL & CE Standards
PESO / BIS / TAC Norms (India)
Site Risk Assessment
Panel Layout Design & Coverage Planning
Cylinder Mounting
Detection Tube Routing
Nozzle Placement Optimization
Electrical Integration
System Testing & Commissioning
Maintenance Training
Periodic pressure checks
Detection tube condition evaluation
Valve functionality testing
Panel inspection after activation
Annual system certification
Indirect Low Pressure Fire Suppression System, electrical panel fire protection, switchgear fire suppression, cabinet fire suppression system, low pressure clean agent system, automatic fire suppression for panels, industrial fire protection technology, Fire Engineering Technology, panel fire safety solution
Q1. Is the system safe for live electrical panels?
Yes, clean agents used are non-conductive and safe for energized panels.
Q2. What is the typical response time?
Activation occurs within 10–20 seconds after detection.
Q3. Can it integrate with BMS or alarms?
Yes, it supports full integration with fire alarms and BMS systems.
Q4. How much area can one system protect?
Coverage depends on panel volume and agent type; it can be customized.
Q5. Is it suitable for retrofit installations?
Yes, the system can be easily retrofitted into existing panels.
Fire Engineering Technology delivers industry-proven indirect low pressure fire suppression solutions with precision engineering, certified components, and high-performance reliability for electrical panel protection. Our systems ensure asset safety, operational continuity, and compliance with international fire safety standards.
The Indirect Low Pressure Fire Suppression System for Electrical Panels & Switchgear is a critical safety investment for modern infrastructure. By combining advanced detection with controlled clean agent discharge, it provides superior protection against electrical fires while safeguarding expensive equipment and minimizing downtime.
Protect your power infrastructure with intelligent fire suppression solutions by Fire Engineering Technology – where safety meets innovation.
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