## Technical Overview: W2TG0-2A4-R The **W2TG0-2A4-R** is a specific model within the **W2 Series of AC Axial Fans**, typically manufactured by companies like **Sanyo Denki** (San Ace line). These components are designed for high-performance cooling in industrial equipment, server racks, and power supplies. --- ### 1. Key Technical Specifications The part number encodes specific electrical and physical characteristics. Below is a breakdown of the typical specifications for this series: | Parameter | Specification | |:---|:---| | **Component Type** | AC Axial Fan | | **Input Voltage** | 200V - 240V AC (Varies by region) | | **Frequency** | 50 / 60 Hz | | **Frame Size** | Approximately 120mm x 120mm x 38mm | | **Bearing Type** | Dual Ball Bearing (for long life) | | **Termination** | Lead Wires (indicated by -R or similar suffixes) | | **Material** | Aluminum Frame / Plastic Impeller (UL 94V-0) | --- ### 2. Internal Electronic Components While it appears as a simple mechanical fan, the internal assembly contains several critical electronic parts: * **Shaded Pole or Capacitor-Run Motor:** The "guts" consist of a stator with copper windings and a permanent magnet or induction rotor. * **Thermal Protector:** Most "R" suffix models include impedance protection or a thermal cutoff to prevent the motor from catching fire if the blades are stalled. * **Ball Bearing System:** High-precision steel balls that reduce friction and allow the fan to operate at high RPMs (typically 2,500 to 3,000 RPM). * **EMC Suppression:** Internal circuitry designed to minimize electromagnetic interference (EMI) back into the AC power line. --- ### 3. Application Use Cases The W2TG0-2A4-R is primarily used in environments where reliability is paramount: 1. **Industrial Control Panels:** Moving heat away from PLCs and VFDs. 2. **Network Infrastructure:** Cooling high-density switches and routers. 3. **Medical Equipment:** Providing airflow to sensitive diagnostic electronics. 4. **Power Supplies:** Preventing thermal throttling in high-wattage AC/DC converters. --- ### 4. Mounting and Wiring Diagram Most versions of this fan use a standard 2-wire configuration: ```text [ AC L ] ----( Brown/Black Wire )---- [ Fan Motor ] [ AC N ] ----( Blue/White Wire )---- [ Fan Motor ] [ PE ] ----( Green/Yellow )---- [ Metal Frame ] ``` *Note: Always verify the specific wire colors on the manufacturer's datasheet as they can vary by production lot.*