The **W2AC-A13D-R2** is a specific model of an **AC Axial Fan**, typically manufactured by brands like **CUI Devices**. It is designed for thermal management in electronic enclosures, server racks, and industrial equipment. Below is a breakdown of its technical specifications and electronic characteristics. ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Input Voltage** | 110 ~ 120 V AC | | **Frequency** | 50/60 Hz | | **Dimensions** | 120 x 120 x 38 mm | | **Bearing Type** | Dual Ball Bearing | | **Airflow** | ~95 - 108 CFM (Cubic Feet per Minute) | | **Static Pressure** | ~0.33 - 0.38 in H2O | | **Noise Level** | ~43 - 47 dBA | | **Current Consumption** | ~0.21 - 0.26 A | --- ### 2. Electronic Components & Design #### Motor Construction The fan utilizes an **AC Shaded Pole Motor**. This is a type of single-phase induction motor. It is preferred for fans because: * **Reliability:** No brushes to wear out. * **Simplicity:** It does not require a starting capacitor (in most small versions). * **Self-Starting:** The "shading coil" creates a rotating magnetic field to initiate rotation. #### Bearing System (Dual Ball Bearing) The "R2" suffix often denotes the bearing or revision style. Dual ball bearings are superior to sleeve bearings because: * They can be mounted in **any orientation** (horizontal, vertical, or angled). * They have a significantly higher **MTBF** (Mean Time Between Failures), often exceeding 70,000 hours at 40°C. #### Protection Features * **Impedance Protection:** The motor windings are designed to limit current flow if the fan blades are obstructed (locked rotor). This prevents the coils from overheating and catching fire. * **Insulation Class:** Usually rated Class B or Class E, allowing for internal temperatures up to 120°C. --- ### 3. Wiring and Connection The unit typically features a **2-terminal or 2-wire** connection system. ```json { "Connection": "Terminal or Lead Wire", "Polarity": "Not applicable (AC Input)", "Grounding": "External metal frame grounding point" } ``` --- ### 4. Application Use Cases * **Industrial Control Panels:** To prevent PLC and VFD overheating. * **Power Supplies:** Large-scale rectifiers and UPS systems. * **Server Cabinets:** For high-volume air extraction.