Project requirement
On May 12, 2026, LONGWELL opened an engineering evaluation for an EC axial fan design based on incoming baseline reference files. The objective was to review technical parameters and establish a standardized specification for model LWAE17251SH-03-11 featuring wide AC voltage operation and environmental protection.
Input reference vs output specification
The input evaluation referenced a 115 VAC baseline model designation with 4000 RPM nominal speed, 28.0 W maximum power, and 400 mm lead wire length. On May 15, 2026, LONGWELL engineering technical review output standard specification sheet LWAE17251SH-03-11, defining an operating voltage range of 100.0 to 240.0 VAC (220 VAC rated voltage), 31 W input power, and IP55 protection rating.
| Parameter | Input Reference Baseline | LONGWELL LWAE17251SH-03-11 Output |
|---|---|---|
| Fan Model Designation | AF17251B22UL | LWAE17251SH-03-11 |
| Rated Voltage | 115 VAC (50/60Hz) | 220 VAC |
| Operating Voltage Range | 220~240 VAC (50/60Hz) | 100.0-240.0 VAC |
| Input Power | 28.0 W (Max) | 31 W |
| Rotational Speed | 4000 RPM (+/-10%) | 4000 RPM (+/-10%) |
| Maximum Air Flow (at 0 Static Pressure) | 289.61 CFM | 305.29 CFM |
| Maximum Static Pressure (at 0 Air Flow) | 241.45 Pa (0.97 in-H2O) | 28.92 mm H2O |
| Protection Level | IP55 | IP55 |
| Lead Wire Configuration | UL1007 20# (400 +/-15 mm) | UL1007 22 AWG# (500 mm total length, 440 +/-10 mm wire length) |
Documented specification scope
The output specification details a frame constructed of aluminum alloy, a PBT plastic UL94V-0 impeller, dual ball bearings, and a continuous operating life expectancy of 70,000 hours at 25 degrees Celsius. The deliverable provides technical documentation and standardized drawings for model LWAE17251SH-03-11 for fit evaluation.
Download LWAE17251SH-03-11 Specification Sheet (PDF)
Discuss a similar requirement
If you have specific airflow targets, broad operating voltage requirements, structural envelope constraints, or IP rating needs for your cooling application, contact LONGWELL to evaluate your specification needs.
Please share your airflow requirements, duty points, target voltage, and mounting requirements via our contact page or explore our product fan selection tool at https://select.longwellfans.com/.
Choose the right ec axial fan
Longwell manufactures 152 ec axial fans in-house. Send airflow, static pressure and voltage — an engineer replies with a matching model, performance curve and price within one working day.
