The **W2AC-AA2A-R2/N** refers to a specific configuration of a high-performance **Industrial AC Fan**, typically manufactured by brands like **Sanyo Denki** (San Ace series) or similar thermal management specialists. These units are designed for cooling sensitive electronic enclosures and server racks. Below is a breakdown of its electronic components and technical specifications. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 230V AC (Nominal) | | **Operating Frequency** | 50/60 Hz | | **Bearing Type** | Dual Ball Bearing | | **Housing Material** | Aluminum Die-cast | | **Impeller Material** | Plastic (PBT) / Glass Fiber reinforced | | **Protection** | Impedance Protected / Thermal Protection | --- ### 2. Internal Electronic Parts and Construction The "W2AC" series is built with several critical internal components that manage power conversion and mechanical rotation: #### A. The Induction Motor Unlike DC fans that use a PCB with hall-effect sensors, this AC fan typically utilizes a **Shaded Pole Motor** or a **Permanent Split Capacitor (PSC) Motor**. * **Stator:** Laminations of silicon steel with copper windings. * **Rotor:** A squirrel-cage rotor design that reacts to the magnetic field created by the AC current. #### B. Bearings (Mechanical/Electronic interface) The **R2** designation often refers to high-grade **Dual Ball Bearings**. These are essential for: * Reducing friction and electronic "noise" caused by mechanical vibration. * Extending the MTBF (Mean Time Between Failure) to approximately 50,000 - 100,000 hours. #### C. Protection Circuitry * **Impedance Protection:** The windings are designed so that if the fan is locked (prevented from spinning), the heat generated by the electricity won't rise high enough to cause a fire. * **Thermal Cut-off:** Some variants include a thermal fuse that breaks the circuit if the internal temperature exceeds a safety threshold. --- ### 3. Wiring and Connection (The "N" Suffix) The suffix **"/N"** usually denotes the lead wire configuration or a specific safety certification (like UL/CSA/TUV). * **Lead Wires:** Typically two or three wires (Line, Neutral, and sometimes a Ground/Earth wire). * **Termination:** Usually 22-24 AWG wires, pre-stripped for terminal block connection. --- ### 4. Application Context These fans are used in environments where reliability is more important than variable speed control: 1. **Server Cabinets:** Constant airflow to prevent hotspots. 2. **Power Supplies:** Large-scale industrial UPS systems. 3. **Control Panels:** Keeping PLC (Programmable Logic Controllers) within operating temperatures. ---