The **W2AC-A24A-R2** is a specific model of an AC axial fan, typically manufactured by brands like **CUI Devices**. These components are widely used in industrial equipment, server racks, and power supplies for thermal management. --- ### Technical Specifications The following table highlights the core electronic and mechanical parameters of the W2AC-A24A-R2: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 240V AC (50/60 Hz) | | **Dimensions** | 120 x 120 x 38 mm | | **Airflow** | ~95 - 115 CFM (Cubic Feet per Minute) | | **Input Power** | ~20W - 22W | | **Bearing Type** | Dual Ball Bearing (Standard for long life) | | **Termination** | Lead Wires (R2 designation often refers to wire length/type) | | **Material** | Aluminum Die-cast Frame / PBT Plastic Impeller | --- ### Key Electronic Components & Design #### 1. AC Induction Motor Unlike DC fans that use electronic commutation (ESCs), this fan utilizes a **shaded-pole induction motor** or a **permanent split capacitor motor**. - **Stator:** Consists of copper windings that create a rotating magnetic field when connected to 240V AC. - **Rotor:** A squirrel-cage rotor design that reacts to the stator's field to generate torque. #### 2. Bearing System The "Ball Bearing" system in this model is critical for its electronic longevity. Ball bearings are preferred over sleeve bearings for AC fans because they can handle the higher heat generated by the AC motor coils and can be mounted in any orientation (horizontal or vertical). #### 3. Protection Features - **Impedance Protection:** The motor windings are designed so that if the fan blade is locked (stalled), the impedance of the coils limits the current flow. This prevents the fan from catching fire or melting due to overheating during a failure. - **Insulation Class:** Typically Class B or F, rated to withstand internal temperatures up to 130°C-155°C. #### 4. Wiring (R2 Variant) The **-R2** suffix usually denotes a specific revision or wiring configuration. In most industrial contexts: - **Red/Black or Black/Black wires:** Standard AC input. - **Ground Wire:** Often included (Green/Yellow) for safety since the frame is metal (Aluminum). --- ### Application Use-Cases * **Enclosure Cooling:** Exhausting hot air from electrical control panels. * **Power Supplies:** Providing active cooling for high-voltage transformers. * **HVAC:** Small-scale air movement in ventilation systems.