The **W2DY-243B-R** is a specific model of an **AC Axial Fan** manufactured by **Nidec Copal Electronics**. These fans are designed for thermal management in industrial equipment, power supplies, and telecommunications racks. --- ### Technical Specifications The following table outlines the primary electrical and mechanical characteristics of the W2DY-243B-R: | Parameter | Specification | | :--- | :--- | | **Rated Voltage** | 240V AC | | **Frequency** | 50 / 60 Hz | | **Airflow** | High Volume (Dual Axis) | | **Bearing Type** | Ball Bearing | | **Housing Material** | Aluminum Die-cast | | **Termination** | Lead Wires | | **Protection** | Impedance Protected | --- ### Key Electronic & Mechanical Components #### 1. Induction Motor The heart of the fan is a shaded-pole or capacitor-run AC induction motor. It is designed for longevity and continuous operation. The "240V" rating indicates it is optimized for high-voltage industrial grids. #### 2. Ball Bearing System The "B" in the model suffix usually denotes **Ball Bearings**. Unlike sleeve bearings, ball bearings allow the fan to be mounted in any orientation (horizontal, vertical, or angled) without significantly reducing the lifespan of the part. #### 3. Impedance Protection The electronic windings are "Impedance Protected." This means that if the fan blades are physically locked (stalled), the internal resistance of the motor windings will prevent the temperature from rising to a point that would cause a fire or permanent circuit failure. #### 4. Die-cast Aluminum Frame The housing is typically made of aluminum. This acts as a heat sink for the motor windings and provides structural rigidity to ensure the fan doesn't warp under high-speed rotation. --- ### Common Applications * **Server Rooms:** Exhausting heat from rack-mounted equipment. * **Industrial Control Panels:** Preventing overheating of PLCs and Inverters. * **Medical Devices:** Cooling high-precision laboratory instruments. * **Power Supplies:** Active cooling for high-wattage transformers and MOSFETs. ---