The **W2AC-A11B-R2** is a specific model of an AC axial fan, typically manufactured by **Wintech** or similar industrial cooling solution providers. This component is designed for thermal management in electronic enclosures, server racks, and industrial machinery. --- ### 1. Technical Specifications Below are the primary electrical and mechanical characteristics of the W2AC-A11B-R2: | Feature | Specification | | :--- | :--- | | **Input Voltage** | 110V - 120V AC | | **Frequency** | 50/60 Hz | | **Current Consumption** | Approx. 0.20A - 0.25A | | **Power Input** | ~18W - 22W | | **Speed (RPM)** | 2600 - 3000 RPM | | **Airflow (CFM)** | ~85 - 105 CFM | | **Bearing Type** | Dual Ball Bearing | | **Frame Material** | Die-cast Aluminum | --- ### 2. Electronic & Structural Components #### A. The Motor (Shaded Pole vs. Capacitor Run) As an AC fan, this model typically utilizes a **Shaded Pole Induction Motor**. * **Stator:** Consists of copper windings wrapped around a laminated steel core. * **Rotor:** A "squirrel cage" design that reacts to the electromagnetic field to create rotation. #### B. The Bearing System (Dual Ball) The "B" in the part number often denotes **Ball Bearings**. * **Longevity:** Rated for approximately 50,000 to 70,000 hours of continuous use. * **Orientation:** Unlike sleeve bearings, ball bearings allow the fan to be mounted in any orientation (horizontal, vertical, or angled) without affecting lifespan. #### C. Housing and Impeller * **Frame:** The housing is usually made of aluminum alloy, providing structural rigidity and acting as a secondary heat sink. * **Blades:** Usually made of PBT (Polybutylene Terephthalate) plastic, UL94V-0 rated for flame retardancy. --- ### 3. Wiring and Connection Most units in this series feature a simple two-wire or terminal-block interface: ```yaml Connection Type: Lead Wires (Standard) Wire Gauge: 22 AWG Insulation: PVC / UL1007 Standard Length: 300mm ``` --- ### 4. Safety and Protection Features * **Impedance Protection:** The motor is designed so that if the fan blades are locked (prevented from spinning), the internal resistance prevents the coils from reaching temperatures that would cause a fire. * **Dielectric Strength:** Capable of withstanding high voltage (approx. 1500VAC for 1 minute) between the frame and the terminals.