The **W2AC-A31B-R** is a specific model of an AC axial fan, typically manufactured by **Wintek** or associated industrial cooling brands. It is designed for thermal management in server racks, industrial cabinets, and electronic enclosures. Below is a detailed breakdown of its electronic and mechanical parts. --- ### 1. Technical Specifications The core electronic profile of this component is defined by its power requirements and performance metrics: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 220V - 240V AC | | **Frequency** | 50 / 60 Hz | | **Power Consumption** | Approx. 18W - 22W | | **Bearing Type** | Dual Ball Bearing | | **Current** | ~0.08A - 0.12A | | **Speed** | 2,500 - 3,000 RPM | | **Airflow** | ~80 - 100 CFM | --- ### 2. Key Electronic Components #### A. The Induction Motor The heart of the W2AC-A31B-R is a **Shaded-Pole Induction Motor** or a **Permanent Split Capacitor (PSC) motor**. * **Stator:** Consists of copper windings wrapped around a laminated steel core. When AC power is applied, it creates a rotating magnetic field. * **Rotor:** A squirrel-cage rotor (usually integrated into the fan hub) that reacts to the stator's field to create torque. #### B. Bearing System (Dual Ball) The "B" in the model number often signifies **Ball Bearings**. * **Longevity:** Dual ball bearings allow the fan to be mounted in any orientation (horizontal or vertical). * **Electronic Protection:** They reduce friction, preventing the motor from overheating due to mechanical resistance. #### C. Impedance / Thermal Protection * **Impedance Protection:** The motor windings are designed so that if the fan blade is stalled (locked rotor), the internal resistance prevents the current from rising to a level that would cause a fire. * **Insulation Class:** Usually Class B or F, rated to withstand temperatures up to 120°C-155°C. #### D. Connection Interface * **Termination:** Typically features two lead wires (Black/Black or Blue/Brown) or fast-on terminals for AC mains connection. * **Grounding:** The outer frame is usually aluminum alloy, requiring a ground connection for safety in high-voltage environments. --- ### 3. Construction Materials | Part | Material | Purpose | | :--- | :--- | :--- | | **Frame** | Die-cast Aluminum | Heat dissipation and structural rigidity. | | **Impeller** | PBT Plastic (UL94V-0) | Flame retardant blades designed for high airflow. | | **Windings** | Enameled Copper | High-efficiency electrical conductivity. | --- ### 4. Wiring Diagram (Simplified) ```text [ AC L ] ----(Black Wire)---- [ Internal Motor Winding ] | [ AC N ] ----(Black Wire)---- [ Thermal Fuse (Optional) ] ``` ---