200mm 115V 60Hz Axial Fan for 30 Pa Duty Points

Meeting Duty Point Constraints for a 115V 60Hz axial fan

We designed a reliable 115V 60Hz axial fan for a North American client. A customer requested a 200mm cooling module for a specific application. The system required an exact duty point. Specifically, the 115V 60Hz axial fan had to push 700 m3/h of air.

Furthermore, it needed to overcome 30 Pa of static pressure. This application involves an outdoor industrial cabinet. Consequently, the equipment faces harsh winter conditions. The operating environment drops to -30°C in winter.

Meanwhile, summer internal temperatures reach up to 60°C. They needed a fan that handles this entire thermal range without failing. Next, we faced a strict physical dimensional limit. The customer’s mounting frame spans exactly 260mm by 260mm.

In addition, the maximum allowable depth is just 80mm. This small footprint restricted our motor size options. Therefore, we had to maximize airflow efficiency within a very tight space. Safety and performance standards also shaped the 115V 60Hz axial fan heavily.

The final product must meet EN 60335-1 safety rules. Also, we must test aerodynamic performance to ISO 5801-1997 methods. Finally, the power grid in the target region fluctuates often. So, the 115V 60Hz axial fan must tolerate voltage drops without stalling out.

Engineering the 200mm Impeller and Motor Configuration

Our team explored several ways to hit the 30 Pa target. First, we considered using a standard 230V AC motor. We could pair it with a step-down transformer. However, this extra electrical part would breach the 80mm depth limit.

Instead, we chose to wind a native 115V motor. This decision kept the entire assembly inside the customer’s envelope. Next, we evaluated options for the 115V 60Hz axial fan material. A standard plastic rotor would reduce the overall fan weight.

It would also lower the final manufacturing cost materially. By contrast, plastic becomes dangerously brittle at -30°C. Therefore, we rejected plastic to prevent winter mechanical failures. We selected cold-rolled steel for the seven-blade impeller.

This metal design survives the extreme cold perfectly. Even so, the steel blades introduced a new engineering trade-off. The heavier metal rotor requires much more starting torque. Consequently, the 115V 60Hz axial fan draws 0.7 A at its full speed.

Spinning this heavy metal part at 2800 RPM also creates noise. The 115V 60Hz axial fan produces a 60 dB(A) sound pressure level. In short, we traded quiet operation for cold weather durability. Furthermore, the heavy rotor affects bearing life.

We installed maintenance-free deep groove ball bearings. These specific bearings ensure a 30,000-hour L10 life at 20°C. We also balanced the impeller to G6.3 grades. This standard prevents excess vibration during continuous runs.

Smooth operation protects the internal ball bearings. Therefore, the fan achieves its promised lifespan.

Matching the Static Pressure Duty Point

Hitting the exact 700 m3/h mark required careful blade pitch tuning. The resulting model is the LWAA2E200S-7MKW-20-00. This fan delivers a maximum free air volume of 1009 m3/h. Thus, the 700 m3/h target sits safely on the performance curve. It falls in a stable region far away from the stall point. By operating here, the motor avoids dangerous overheating. Thermal protection adds another layer of system safety. We built in a thermal disconnect switch. It trips when internal temperatures reach 150°C to 160°C. Finally, the motor resets automatically between 100°C and 130°C.

Technical Specifications

The 92–138 VAC voltage range is crucial for North American grids. Often, industrial power lines experience severe voltage drops. Meanwhile, the Class F insulation protects the copper windings. It ensures the motor survives continuous S1 duty cycles. Finally, the IP44 rating blocks solid objects larger than 1.0 mm.

Reference: AMCA 210 covers the test method behind these figures.

Technical Documentation

This dimensional drawing helps engineers verify the 260mm mounting hole spacing for chassis integration.

LWAA2E200S-7MKW-20-00 Technical Specification
This complete data sheet contains the P-Q performance curves and specific wiring diagrams for safe installation.

How to Specify a Cold Weather Cooling Fan

Engineers replacing an industrial fan face similar environmental constraints. If your project requires cold weather operation, follow these practical steps. First, measure the actual impedance of your system. You must know the true static pressure before selecting a model.

• Map the duty point: Define the airflow required at your specific system resistance. A fan rated for 1000 m3/h at free air will move much less air against a 30 Pa obstacle.
• Verify the voltage range: Regional power grids often sag during heavy load periods. Request a motor that handles a wide voltage window, like 92 to 138 VAC, to prevent stalling.
• Check ambient limits: Determine the lowest possible winter temperature for your equipment. Plastic impellers become brittle in freezing conditions, making cold-rolled steel a safer choice.

Our standard sample lead time runs 1 to 3 days from stock.

Related: Axial Fans.

Engineering Questions About the 115V 60Hz axial fan

Browse our axial fans range, the AC axial fans section, or EC axial fans.