The **W2AC-A13A-R2** is a specific model of an **AC-powered axial fan**, typically manufactured by brands like **Wentech** or similar industrial cooling component suppliers. These parts are designed for high-performance thermal management in server racks, industrial cabinets, and power supplies. --- ### 1. Technical Specifications The following table outlines the typical electrical and mechanical characteristics for this specific part number: | Feature | Specification | | :--- | :--- | | **Input Voltage** | 110V - 120V AC | | **Frequency** | 50/60 Hz | | **Dimensions** | 120mm x 120mm x 38mm (Standard) | | **Bearing Type** | Dual Ball Bearing (indicated by "2" or "B" in many codes) | | **Housing Material** | Die-cast Aluminum | | **Impeller Material** | Thermoplastic (PBT UL94V-0) | | **Termination** | Lead Wires (standard) or Terminals | --- ### 2. Breakdown of the Part Number While nomenclature varies slightly by manufacturer, the code generally follows this logic: * **W2AC**: Series designation (likely AC-powered, 120mm frame). * **A1**: Voltage identifier (A1 typically denotes 110/120V; A2 usually denotes 220/240V). * **3**: Speed rating (3 is often "High Speed"). * **A**: Airflow direction or frame style. * **R2**: Revision code or specific motor protection type (e.g., Impedance protected). --- ### 3. Key Electronic Components The internal electronics of the W2AC-A13A-R2 are designed for durability and constant operation: 1. **Shaded Pole Motor:** This is a self-starting AC induction motor. It uses a copper "shading coil" to create a rotating magnetic field. It is electronically simple and highly reliable because it lacks brushes that wear out. 2. **Dual Ball Bearings:** Unlike sleeve bearings, double ball bearings allow the fan to be mounted in any orientation (horizontal, vertical, or angled) without reducing the lifespan. 3. **Impedance Protection:** The motor windings are designed to withstand the heat generated if the fan blades are physically obstructed (locked rotor). This prevents the fan from catching fire if it stops spinning. 4. **Stator and Rotor:** The stator consists of copper windings around a laminated steel core, while the rotor is integrated into the hub of the plastic impeller. --- ### 4. Application Areas * **Server Enclosures:** Providing exhaust for high-heat rack environments. * **Industrial Control Panels:** Cooling PLCs and motor drives. * **Power Supplies:** Large-scale rectifiers and UPS systems. * **HVAC:** Small-scale ventilation and air circulation.