Customer Requirement
An OEM client required an axial fan for new equipment enclosure ventilation. The power supply specification required by the customer is 220V / 50Hz alternating current. The project required a square-frame axial fan with an integrated protective shutter. The fitting space is 320 × 320 mm for mounting, with a maximum depth of 155 mm. The axial fan needed to deliver over 1,500 m³/h airflow at a minimum static pressure of 120 Pa. The key requirements were compliance. Both the product label and technical drawings had to specify an IP54 protection rating and Class F (155°C) motor insulation.
Engineering Solution
The engineering team selected the standard LWEA2E250SM-082 AC axial fan as the initial solution. Its 250 mm frame size matched the installation requirements. The airflow of 1,800 m³/h at 190 Pa exceeded the initial requirement. An AC motor was selected to match the customer’s fixed 220V single-phase power supply.
The engineering team reworked the motor enclosure to bring it up to an IP54 rating, matching the compliance spec the client required. The motor components, including winding wire, slot insulation, and varnish, were verified to meet Class F at 155°C insulation requirements. Adjust the motor winding and replace the standard 4µF capacitor with a 3µF capacitor. When the finalized fan went through ISO 5801 testing, it delivered 1,627 m³/h of airflow at 123 Pa, all while pulling just 100W of power.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | LWEA2E250SM-082 |
| Voltage | 220 VAC |
| Frequency | 50 Hz |
| Airflow | 1627 m³/h / 957 CFM |
| Static Pressure | 123 Pa |
| Power Input | 100 W |
| Speed | 2550 RPM |
| Current | 0.44 A |
| Noise Level | 65 dB(A) |
| Capacitor | 3 µF |
| Protection Class | IP54 |
| Insulation Class | Class F (155°C) |
| Dimensions (Frame) | 320 x 320 x 155 mm |
| Weight | Not specified |
Technical Documentation
LWEA2E20SM-082-Technical-Documentation
The following document is the specifications for the LWEA series square-type axial fan with shutter.
Why LONGWELL Axial Fan for Enclosure Ventilation?
- Customization Engineering: For this enclosure ventilation project, the engineering team optimized the motor winding and capacitor configuration to meet the customer’s requirements. LONGWELL provides customized solutions from impeller dimensions to electrical components to meet specific OEM requirements.
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Motor Protection: LONGWELL modified the motor enclosure structure to help protect the motor components from dust and moisture exposure. The upgraded axial fan achieves IP54 protection and Class F (155°C) insulation performance.
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Strictly Verified Performance: The final LWEA2E20SM-082 axial fan was tested according to ISO 5801 standards. It achieved 1,627 m³/h airflow at 123 Pa static pressure. The power consumption was reduced from 115W to 100W, improving energy efficiency compared with the initial configuration.
- Extensive Experience: LONGWELL axial fans are widely used in industrial and commercial ventilation systems. With a 35-year history in the ventilation industry, LONGWELL has extensive experience in providing solutions.
Explore our full Axial Fans range.
Frequently Asked Questions
Q: Why choose an AC axial fan but not an EC axial fan for enclosure ventilation?
A: The customer only required an AC power supply. They do not need the EC motor to realize speed control. For systems requiring dynamic airflow adjustment, LONGWELL provides axial fans with SmartEC™ control technology.
Q: Can the LWEA2E250SM-082 be customized for different sizes?
A: Yes. The LWEA series axial fans provide impeller diameters from ⌀200mm to ⌀400mm as standard products. Axial fans that exceed the standard size range can be customized to meet the requirements.
Q: What is the typical lead time for a semi-custom project like this?
A: For a new product that is not a standard model, LONGWELL promotes a 90-day NPI process from requirement confirmation to mass production. Minor modifications to existing catalog models like LWEA2E250SM-082 will be faster.
Technical Documentation & Resources
Have a Similar Fan Requirement?
Longwell’s engineering team delivers custom spec sheets and samples within 90 days. Since 1990, we have supplied EC fans and blowers to OEMs across HVAC, cold chain, data center, and industrial applications worldwide.
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🏆 ISO 9001 / ISO 14001 / ISO 45001 | CE (TÜV) | UL/ETL | ATEX Zone 21/22 | AMCA 210-16 / ISO 5801 tested
Project Item: 7052631151-LWEA2E250SM-082
Project Date: 2026-07-17 07:50:36
