Customer Requirement
The customer needed a large exhaust fan for general ventilation in an industrial facility. The required operating point was 51,000 m³/h at 56 Pa, so the main challenge was to move a very high volume of air while keeping the exhaust fan within the available installation space.
The wall opening had already been determined, limiting the overall fan size to 1530 × 1530 mm with a maximum depth of 450 mm. Noise was another consideration for the working environment, with the specified sound level not exceeding 75 dBA.
The power supply requirement is 3-phase 380V, 50Hz. The project required complete technical drawings and verified performance data compliant with international standards like AMCA 210-16 and ISO 5801.
Engineering Solution
LONGWELL engineering team evaluated the application’s high-airflow and low-pressure requirements and finally selected the exhaust fan as the better solution. The final design was LWPVE-1530T-01. The selected solution was a more robust, practical belt-drive system. This design decouples the motor speed from the blade speed. We specified a standard and highly reliable 1.5 kW, 1400 RPM 4-pole AC induction motor. This motor drives a precisely calculated pulley system, reducing the fan blade’s rotational speed to just 420 RPM. Operating the large 1400mm diameter, 6-blade impeller at this lower speed was the key to moving the required air volume quietly and efficiently. This mechanical speed reduction proved more cost-effective and field-serviceable for this application scale than a large, custom-wound direct-drive EC motor. The solution provided the customer with the performance they needed using proven, readily available components, minimizing both initial cost and long-term maintenance complexity.
Technical Specifications
| Parameter | Value |
|---|---|
| Voltage | 3~380 V |
| Frequency | 50 Hz |
| Airflow | 51,000 m³/h (approx. 30,000 CFM) |
| Total Static Pressure | 56 Pa |
| Input Power | 1500 W |
| Motor Speed | 1400 RPM |
| Blade Speed | 420 RPM |
| Impeller Diameter | 1400 mm |
| Noise Level | ≤75 dBA |
| Overall Dimensions (W x H x D) | 1530 x 1530 x 450 mm |
The combination of extremely high airflow and low static pressure is characteristic of general space ventilation, designed to exchange the air in a large building multiple times per hour.
Technical Documentation
The following documents were generated as final deliverables and archived for this project.
LWPVE-1530T-01 Technical Drawing & Specification Sheet (PDF)
Why LONGWELL for Industrial Ventilation?
- LONGWELL produces AC exhaust fans with advanced twisted aerodynamic blade profiles and guide vanes, which effectively improve airflow efficiency and reduce turbulence noise.
- A belt-driven AC configuration was used for this project because it allowed a standard 1400 RPM motor to operate the large impeller at a much lower blade speed. It met the required performance without introducing unnecessary motor or control complexity.
- Performance data for the LWPVE-1530T-01 was verified using AMCA 210-16 and ISO 5801 test methods, giving the customer documented airflow and pressure data for equipment integration.
- LONGWELL has prominent competitive edges in supply chain integration, which can provide fans, motors, and control systems as a complete set of tailored solutions to meet demanding industrial requirements.
Explore our full range of Axial Exhaust Fans.
Frequently Asked Questions
Q: Is this LWPVE-1530T-01 fan suitable for variable speed control?
A: The specified model uses a single-speed 3-phase AC induction motor. To achieve variable speed, it requires an external VFD wired to the motor. LONGWELL can supply a VFD-compatible motor.
Q: What is the purpose of the belt-drive system?
A: The belt-drive system is a key engineering choice for this fan’s performance. It uses a standard 1400 RPM motor to turn the 1400mm fan impeller at a much lower 420 RPM, keeping operational noise under the 75 dBA limit.
Q: Can this fan be supplied for a 60Hz power system in North America?
A: Yes. While this unit was built for a 380V/50Hz requirement, we manufacture versions for global power systems, including 460V/60Hz and 400V/50Hz. LONGWELL also offers customization services for rated voltage and frequency.
Technical Documentation & Resources
Project Gallery & Technical Drawings
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.
Browse Related Products:
🏆 ISO 9001 / ISO 14001 / ISO 45001 | CE (TÜV) | UL/ETL | ATEX Zone 21/22 | AMCA 210-16 / ISO 5801 tested
Project Item: 7060113842-LWPVE-1530T -01
Project Date: 2026-07-29 01:49:40
