The model **W2AC-A22A-R2/Q** typically refers to a high-performance **AC cooling fan**, specifically part of the **W2AC series** produced by manufacturers like **Delta Electronics** or **FENGDA**. These are industrial-grade axial fans designed for thermal management in server racks, control cabinets, and power supplies. --- ### 1. Technical Specifications The following table outlines the typical electronic and mechanical characteristics for this model: | Parameter | Specification (Typical) | | :--- | :--- | | **Input Voltage** | 220V - 240V AC | | **Frequency** | 50/60 Hz | | **Power Consumption** | ~20W to 35W (depending on frequency) | | **Bearing Type** | Dual Ball Bearing (R2 designation) | | **Speed** | 2,500 - 3,000 RPM | | **Airflow** | ~90 - 110 CFM (Cubic Feet per Minute) | | **Noise Level** | 45 - 50 dB(A) | | **Termination** | Lead Wires or Terminals | --- ### 2. Breakdown of the Model Name Components While nomenclature varies slightly by brand, the code usually breaks down as follows: * **W2AC**: Indicates the product series (AC Axial Fan). * **A22**: Refers to the Operating Voltage (220V AC class). * **A**: Often denotes the frame size (Standard 120mm x 120mm x 38mm). * **R2**: Usually signifies the **Bearing System**. "R2" typically refers to high-durability **Double Ball Bearings**, which allow for mounting in any orientation and provide a longer MTBF (Mean Time Between Failures). * **Q**: Often stands for "Quiet" or a specific **Safety Certification/Qualification** (such as UL, CE, or TUV). --- ### 3. Key Electronic Components The internal structure of the W2AC-A22A-R2/Q consists of several critical parts: #### A. External Rotor Motor Unlike standard DC fans, these AC fans often use an induction motor with an external rotor. This design is compact and provides high torque to move large volumes of air. #### B. Capacitors (Start/Run) Because it operates on AC power, the motor requires a capacitor to create a phase shift in the windings, allowing the magnetic field to rotate and start the fan blades. #### C. Impedance or Thermal Protection * **Impedance Protected:** The motor windings are designed to resist burning out even if the fan blades are physically blocked (locked rotor). * **Thermal Cut-off:** Some versions include a thermal fuse that breaks the circuit if the internal temperature exceeds safety limits. #### D. Ball Bearing System The "R2" designation implies a precision ball bearing system. This is superior to "Sleeve" bearings because it handles high temperatures better and has a lifespan of approximately 50,000 to 70,000 hours. --- ### 4. Application Areas * **Industrial Enclosures:** Cooling for CNC machines and PLC cabinets. * **Networking:** Heat dissipation for 19-inch server racks. * **Power Supplies:** Ventilation for high-wattage UPS systems and inverters.