The **W2AC-A4CB-R** belongs to a specific series of high-performance **AC Axial Fans**, typically manufactured by brands like **Sanyo Denki** (San Ace series) or similar industrial thermal management providers. These fans are designed for cooling industrial equipment, server racks, and power supplies. --- ### 1. Key Technical Specifications The model nomenclature typically breaks down into the following electrical and physical characteristics: | Feature | Specification | | :--- | :--- | | **Input Voltage** | 200V - 240V AC (indicated by the 'A' or '2' prefix) | | **Frequency** | 50/60 Hz Dual Frequency | | **Current / Power** | Approximately 0.10A - 0.14A (Typical for this frame size) | | **Speed (RPM)** | High Speed (approx. 2700 - 3250 RPM) | | **Airflow** | High Volume (approx. 90 - 110 CFM) | | **Bearing Type** | Dual Ball Bearings (R-suffix often indicates long life) | --- ### 2. Internal Electronic Components While these are AC-driven motors, they contain sophisticated electronic and mechanical structures to ensure efficiency: #### A. The Induction Motor The heart of the W2AC-A4CB-R is a **Shaded-Pole** or **Capacitor-Run** induction motor. Unlike DC fans that use a PCB with a Hall Effect sensor, these use electromagnetic induction to rotate the permanent magnet or squirrel-cage rotor. #### B. Bearings (Mechanical/Electronic Support) The "R" suffix usually denotes a **Dual Ball Bearing** system. - **Electronics impact:** High-quality bearings reduce friction, which prevents the motor from drawing excess current and overheating the internal windings. #### C. Thermal Protection Most fans in this series include an **Impedance Protection** or **Thermal Cut-off**: - If the fan blades are obstructed (locked rotor), the internal resistance is high enough to prevent the coils from melting or catching fire. #### D. Construction Materials - **Frame:** Die-cast aluminum (acts as a heat sink for the motor). - **Impeller:** Plastic (UL 94V-0 rated flame retardant). --- ### 3. Wiring and Connection The **A4CB** designation often refers to the terminal or lead wire configuration: 1. **Terminals:** Usually features two solder terminals or fast-on connectors for AC input. 2. **Grounding:** The aluminum frame typically features a grounding screw point to prevent ESD (Electrostatic Discharge) or electrical leakage. --- ### 4. Typical Applications * **Control Panels:** Removing heat from PLCs and Inverters. * **Server Cabinets:** Maintaining airflow in high-density racks. * **Medical Equipment:** Reliable cooling for power-intensive diagnostic tools.