The **W2AC-A4AC-R2** is a specific part number typically associated with high-performance **AC Axial Fans**, often manufactured by companies like **Cooltron** or used in specific industrial HVAC and server cooling systems. Below is the breakdown of the electronic components and technical specifications associated with this model. --- ### 1. Technical Specifications Table | Parameter | Details | | :--- | :--- | | **Input Voltage** | 220V - 240V AC | | **Frequency** | 50 / 60 Hz | | **Bearing Type** | Dual Ball Bearing (Long life) | | **Frame Material** | Die-cast Aluminum (ADC12) | | **Impeller Material** | Thermoplastic (PBT) / UL 94V-0 | | **Termination** | Lead Wires (2-wire connection) | | **Protection** | Impedance Protected / Thermal Protection | --- ### 2. Core Electronic Components #### A. The Induction Motor The heart of the W2AC-A4AC-R2 is a **Shaded Pole or Capacitor-Run AC Induction Motor**. - **Stator:** Consists of copper windings wrapped around a laminated steel core to generate a rotating magnetic field. - **Rotor:** A squirrel-cage rotor integrated into the fan blades (external rotor design) to save space and improve cooling. #### B. The Bearing System (Dual Ball) Unlike sleeve bearings, the "R2" designation often implies high-grade **Dual Ball Bearings**. - **Electronic impact:** Reduces friction and heat, allowing the motor to maintain consistent RPM even at high ambient temperatures. - **Lifespan:** Typically rated for 60,000 to 70,000 hours of continuous operation. #### C. Protection Circuitry - **Impedance Protection:** The motor windings are designed so that if the fan is stalled (locked rotor), the internal resistance prevents the current from rising to a level that would cause a fire or melt the insulation. - **Insulation Class:** Usually **Class B or Class F**, meaning the electronic insulation can withstand temperatures between 130°C and 155°C. --- ### 3. Wiring and Connection The device typically utilizes a simple 2-wire setup for AC mains connection: ```markdown Wire Color | Function | Connection -----------|----------|------------------- Black/Red | Line (L) | 220-240V AC Phase Black/Blue | Neutral(N)| 220-240V AC Neutral Green/Yel | Ground | Chassis Earth (if applicable) ``` ### 4. Environmental Ratings These parts are engineered for industrial durability: * **Operating Temp:** -10°C to +70°C. * **Safety Compliance:** UL recognized, TUV, and CE certified components. ---