The ANWETECH IG541 30 MPa Mixture Gas Fire Suppression System is a total flooding gaseous fire suppression solution using a mixture of nitrogen, argon and carbon dioxide.
The extinguishing agent is colourless, odourless, non-toxic and non-conductive. The system is designed for enclosed protected areas such as computer rooms, data rooms, telecommunication rooms, transformer rooms, electrical switch rooms, generator rooms, control centres, archives and other industrial spaces.
The system supports electrical automatic, electrical manual and mechanical emergency starting modes, with 80 L and 140 L extinguishing-agent cylinder options.
IG541 extinguishing agent is a clean compressed gas consisting of:
According to the manual, the agent is colourless, odourless, non-toxic and non-conductive. It does not impair visibility during discharge, does not produce corrosive decomposition products and has zero ozone depletion potential.
IG541 extinguishes fire mainly by reducing the oxygen concentration within the protected enclosure to a level that does not support combustion, generally below 15%.
The system is intended for total flooding protection of Class A surface fires, Class B flammable-liquid fires and energized electrical hazards in enclosed spaces.
The system may be configured as either a combined distribution system serving several protected areas or a unit independent system dedicated to one protected area. In a combined distribution system, only one protected zone is discharged at a time.
The IG541 extinguishing-agent storage system operates at a nominal storage pressure of 30.0 MPa.
Maximum working pressure at +50°C is 36.6 MPa, while minimum working pressure at 0°C is 27 MPa.
The system supports:
In automatic mode, a fire signal can initiate audible and visual alarms, equipment linkage shutdown and the extinguishing release sequence.
The manual describes a preset 30-second delay before the release command is issued.
Two extinguishing-agent cylinder sizes are specified:
The system can be arranged as:
This allows the configuration to be selected according to the number of protected areas and project requirements.
| Model | Volume | Working Pressure | Diameter | Height | Safety Relief Pressure |
|---|---|---|---|---|---|
| HMP80/30 | 80 L | 30 MPa | Φ267 mm | 1860 ± 20 mm | 46 ± 2.3 MPa |
| HMP140/30 | 140 L | 30 MPa | Φ356 mm | 1825 ± 20 mm | 46 ± 2.3 MPa |
The corresponding filling weights at 300 bar are:
| Model | Volume | Filling Pressure at 20°C | Diameter | Height |
|---|---|---|---|---|
| QQP4/6 | 4 L | 6 MPa | Φ140 mm | 360 mm |
| QQP7.5/6 | 7.5 L | 6 MPa | Φ140 mm | 620 mm |
| QQP10/6 | 10 L | 6 MPa | Φ152 mm | 700 mm |
| QQP20/6 | 20 L | 6 MPa | Φ170 mm | 1165 mm |
| Parameter | Specification |
|---|---|
| Product Type | IG541 Mixture Gas Fire Suppression System |
| Storage Pressure | 30.0 MPa |
| Working Temperature | 0°C to +50°C |
| Maximum Working Pressure at +50°C | 36.6 MPa |
| Minimum Working Pressure at 0°C | 27 MPa |
| Cylinder Volume | 80 L / 140 L |
| Filling Weight @ 300 bar | 33.2 kg / 58.2 kg |
| System Operating Voltage | 220 V AC / 24 V DC |
| Start Mode | Electrical Automatic / Electrical Manual / Mechanical Emergency |
| Class A Fire Extinguishing Concentration | 28.1% |
| Class B Fire Extinguishing Concentration | 33.8% |
| Class A Design Concentration | 36.5% |
| Class B Design Concentration | 43.9% |
| Design Concentration for Occupied Area | 37.5%–43% |
| Executive Standard | GB25972-2010 |
| Component | Composition | Purity | Water Content | Oxygen Content |
|---|---|---|---|---|
| Nitrogen (N₂) | 52% ± 4% | >99.9% | <5 ppm | <3 ppm |
| Argon (Ar) | 40% ± 4% | >99.9% | <4 ppm | <3 ppm |
| Carbon Dioxide (CO₂) | 8% +1% / -0.0% | >99.5% | <10 ppm | <10 ppm |
When a fire is detected, the control system initiates alarm, linkage shutdown, delay timing and cylinder release in sequence.
Depending on the selected operating mode, the system can be activated automatically, electrically manually or mechanically in an emergency.
After activation, the IG541 extinguishing agent is released from the storage cylinders through the manifold and discharge nozzles into the selected protected area.
When the controller is set to automatic mode, the system can:
Fire Detection → Audible & Visual Alarm → Equipment Linkage → Delay → Cylinder / Selection Valve Release → IG541 Discharge
The manual specifies a preset delay of 30 seconds in the automatic control sequence.
When set to manual mode, alarm and linkage actions continue automatically, but agent release requires authorized personnel to operate the manual release control.
If the control system fails during a fire, trained personnel can perform the mechanical emergency operating procedure described in the manual.
Depending on the approved system configuration, the IG541 system may include:
The actual quantity and configuration shall be determined according to the project design.
| Parameter | Specification |
|---|---|
| Model | MFZ1-90F/24V |
| Nominal Voltage | DC24 ± 3 V |
| Rated Current | 1.5 A |
| Rated Force | 90 N |
| On-Load Factor | 100% |
The selective valve is used in a combined distribution system to direct the extinguishing agent to the required protected zone.
Available nominal sizes include:
The listed nominal working pressure is 36.6 MPa.
| Parameter | Specification |
|---|---|
| Model | HRG15/36.6 |
| Nominal Diameter | 15 mm |
| Design Pressure | 36.6 MPa |
| Inlet / Outlet Size | M30×1.5 |
| Length | 450 mm |
The pressure switch provides a discharge confirmation signal when extinguishing agent is released.
| Parameter | Specification |
|---|---|
| Model | HXF0.8/36.6 |
| Design Pressure | 36.6 MPa |
| Minimum Working Pressure | 0.8 MPa |
| Connection | R1/2 in. |
The standard nozzle specified in the manual is DPT32.
| Parameter | Specification |
|---|---|
| Model | DPT32 |
| Size | 60 × 55 mm |
| Connection | RC1 1/4 in. |
| Height | 50 mm |
| Discharge Pattern | 360° |
The manual specifies:
Different nozzle types may be designed according to site requirements.
The manual lists the following typical protected areas:
One extinguishing system serves several protected areas. Only one protected zone is discharged at a time.
One dedicated extinguishing system protects one individual protected area.
Installation, commissioning and maintenance should be carried out by trained personnel familiar with pressurized-gas fire suppression systems.
The manual specifies that:
Routine inspection is specified as weekly, while periodic maintenance shall be carried out at least once per year.
Driving cylinders and extinguishing-agent storage cylinders are specified for inspection every 5 years according to the applicable seamless-steel-cylinder standard.
