The **W2TG0-4D1-R** is a specific model within the **W2TG0** series of industrial AC axial fans, typically manufactured by companies like **Sanyo Denki** or similar industrial cooling solution providers. These fans are designed for high-performance thermal management in server racks, industrial control panels, and power supplies. --- ### 1. Key Technical Specifications The part number "W2TG0-4D1-R" identifies several electronic and mechanical characteristics: | Feature | Specification | | :--- | :--- | | **Input Voltage** | 115V AC (Standard) | | **Frequency** | 50 / 60 Hz | | **Current / Power** | ~0.14A - 0.20A / 15W - 18W | | **Speed (RPM)** | High Speed (approx. 2700 - 3100 RPM) | | **Airflow** | High volume (approx. 90 - 105 CFM) | | **Bearing Type** | Dual Ball Bearing (for long life) | | **Housing Material** | Aluminum Die-cast | --- ### 2. Internal Electronic Components The "electronic parts" within this AC fan assembly are integrated to manage power conversion and motor protection: #### A. Shaded-Pole or Capacitor-Run Motor * **The Stator:** Consists of copper windings wrapped around a laminated steel core. These windings create the magnetic field necessary to rotate the permanent magnet rotor. * **Insulation:** Rated Class B or F to withstand high temperatures generated during continuous operation. #### B. Integrated Protection Circuits * **Impedance Protection:** Most "R" suffix models include impedance-protected windings. If the fan blades are blocked (locked rotor), the internal resistance of the coils prevents the motor from drawing enough current to burn out. * **Thermal Protection:** Some variants include a thermal fuse that cuts power if the internal temperature exceeds a safe threshold. #### C. Connection Interface * **Terminals:** Usually features 2-pin spade terminals or lead wires for direct AC connection. * **Grounding:** A dedicated grounding point on the aluminum frame to prevent ESD (Electrostatic Discharge) or electrical shock. --- ### 3. Part Number Breakdown (Typical) | Segment | Meaning | | :--- | :--- | | **W2** | Frame Size (typically 120mm x 120mm) | | **TG** | Series Type (Thin/High Performance) | | **0** | Design Generation | | **4** | Voltage Code (4 often denotes 115V; 2 denotes 230V) | | **D1** | Bearing/Speed configuration | | **R** | RoHS Compliant / Revision code | --- ### 4. Application Environments Due to its rugged construction, the W2TG0-4D1-R is used in: * **Telecommunications:** Cooling base stations and switches. * **Industrial Automation:** Cooling CNC machines and PLC cabinets. * **Medical Equipment:** Heat dissipation for imaging and diagnostic tools.