The **W2CE-544-R2/N** is a specific model of an AC axial fan, typically manufactured by **Welling** or similar industrial cooling component providers. It is widely used in commercial refrigeration (such as reach-in coolers and display cases) and HVAC systems. Below is a breakdown of its electronic and mechanical specifications. --- ### ## Technical Specifications | Feature | Specification | | :--- | :--- | | **Motor Type** | Shaded Pole Motor (Single Phase) | | **Input Voltage** | 220V - 240V AC | | **Frequency** | 50/60 Hz | | **Power Consumption** | Approx. 30W - 40W (varies by load) | | **Current Rating** | ~0.25A | | **Rotational Speed** | 2500 - 3000 RPM | | **Bearing Type** | Dual Ball Bearing (indicated by the '2' or 'B' in many series) | | **Termination** | Lead wires (N-Type typically denotes specific connector/lead length) | --- ### ### Core Electronic Components 1. **Stator & Windings:** * The unit uses copper windings designed for continuous duty. As a shaded pole motor, it uses a "shading coil" (a single-turn copper loop) to create a phase shift in the magnetic field, allowing the motor to self-start on AC power. 2. **Impedance Protection:** * The "R2" designation often implies internal thermal or impedance protection. This means the motor is designed so that if the fan blade is obstructed (locked rotor), the resistance of the windings will prevent the temperature from rising to a point that would cause a fire. 3. **Ball Bearing System:** * Unlike cheaper sleeve bearings, the ball bearings in this model allow for both horizontal and vertical mounting and provide a significantly longer MTBF (Mean Time Between Failures), especially in high-heat environments. 4. **Housing and Insulation:** * The frame is usually Die-cast Aluminum, acting as a heat sink for the motor. The insulation class is typically **Class B or F**, rated for temperatures up to 130°C–155°C. --- ### ### Wiring Configuration Most models in this series follow a standard AC color code for single-phase power: ```markdown - Brown/Black: Live (L) - Blue/White: Neutral (N) - Green/Yellow: Ground (GND) - If metal chassis is exposed ``` --- ### ### Applications * **Commercial Refrigeration:** Condenser cooling for drink fridges. * **Server Racks:** High-volume air extraction. * **Industrial Power Supplies:** Cooling large transformers or inverters. ---