The **W2AC-AA2D-R** is an AC-input axial fan assembly manufactured by **Sanyo Denki**, part of their "San Ace" series. This specific model is designed for high-performance cooling in industrial environments where AC power is the primary source. ### 1. Technical Specifications Below are the primary electronic and physical parameters for this component: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 230V AC (50/60 Hz) | | **Current Consumption** | 0.08A (50Hz) / 0.07A (60Hz) | | **Power Consumption** | 15W (50Hz) / 13W (60Hz) | | **Rotational Speed** | 2,700 RPM (50Hz) / 3,100 RPM (60Hz) | | **Max Airflow** | 51.2 CFM (50Hz) / 58.2 CFM (60Hz) | | **Noise Level** | 39 dB(A) / 42 dB(A) | | **Frame Size** | 120mm x 120mm x 38mm | | **Bearing Type** | Dual Ball Bearing | --- ### 2. Key Electronic Components & Design #### A. Shaded Pole Induction Motor Unlike DC fans that use brushless electronic commutation, this AC fan typically utilizes a **shaded pole motor**. * **Winding:** Copper wire coils wrapped around a laminated steel core. * **Starting:** It uses a copper "shading ring" on a portion of each pole to create a delayed magnetic field, providing the starting torque necessary for rotation. #### B. Bearings and Lifespan The "R" suffix often denotes high reliability. The use of **dual ball bearings** significantly reduces friction compared to sleeve bearings. * **Expected Life:** Approximately 40,000 to 60,000 hours at 40°C. * **Durability:** Suitable for 24/7 continuous operation in servers or control panels. #### C. Safety and Protection Features * **Impedance Protection:** The motor is designed so that if the fan blades are locked (prevented from turning), the internal impedance of the windings limits the current flow. This prevents the coils from overheating or catching fire without needing an external fuse. * **Insulation Class:** Usually Class B or Class E, rated to withstand internal temperatures up to 120°C-130°C. #### D. Connection Interface The part typically features **lead wires** for electrical connection: * **Brown/Blue (or Black/White):** Standard AC Live and Neutral connections. * **Frame Ground:** Some variants include a grounding terminal on the aluminum die-cast frame to prevent electrostatic buildup or electrical leakage. --- ### 3. Application Use Cases Due to its 230V AC rating, this part is commonly found in: 1. **Industrial Control Cabinets:** Cooling PLCs and power supplies. 2. **Server Racks:** Exhausting heat from high-density equipment. 3. **Medical Devices:** Reliable thermal management for sensitive electronics.