The **W2AC-A14B-R/N** is a specific model identifier typically associated with **AC Axial Fans**, often manufactured by companies like **Welling** or similar industrial cooling solution providers. These fans are commonly used in HVAC systems, electronic enclosures, and industrial machinery. Below is a detailed breakdown of the electronic and mechanical components of this part. --- ### 1. Technical Specifications The following table outlines the core electronic and physical characteristics typical for this series: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 220V - 240V AC | | **Frequency** | 50 / 60 Hz | | **Bearing Type** | Ball Bearing (indicated by 'B') | | **Current Consumption** | Approx. 0.10A - 0.14A (varies by load) | | **Power Input** | ~20W - 25W | | **Speed** | 2500 - 3000 RPM | | **Airflow** | High CFM (Cubic Feet per Minute) capacity | | **Termination** | Lead Wires or Terminals (R/N suffix) | --- ### 2. Electronic Components & Construction #### A. The Motor (External Rotor Design) The heart of the unit is a **Shaded Pole** or a **Permanent Split Capacitor (PSC)** AC motor. Unlike DC fans that use PCB controllers, these AC fans rely on the frequency of the AC line to determine synchronous speed. #### B. The Bearing System ('B' Designation) The "B" in the model number signifies a **Dual Ball Bearing** system. * **Durability:** Ball bearings are superior to sleeve bearings for high-temperature environments. * **Orientation:** Allows the fan to be mounted in any orientation (horizontal, vertical, or angled) without affecting lifespan. #### C. Stator and Windings * **Copper Windings:** High-quality enameled copper wire is used for the stator coils. * **Thermal Protection:** Most units in this class feature **Impedance Protection** or a thermal cutoff to prevent the motor from catching fire if the blades are obstructed (locked rotor). #### D. Housing and Impeller * **Frame:** Usually die-cast aluminum, providing a heat sink for the motor and structural rigidity. * **Impeller:** Made from reinforced PBT plastic or metal, balanced to minimize vibration and electronic noise (EMI). --- ### 3. Part Number Decoder (Estimated) While naming conventions vary by manufacturer, the code generally breaks down as follows: * **W2AC:** Series designation (Welling 2-pole AC Fan). * **A14:** Size indicator (often refers to a 120mm or 140mm frame size). * **B:** Ball Bearing. * **R/N:** Specific Revision or Lead Wire configuration (Round/Normal or RoHS compliance markings). --- ### 4. Application Use-Cases * **Server Racks:** Continuous cooling for high-density computing. * **Control Cabinets:** Heat dissipation for PLCs and Inverters. * **Vending Machines:** Air circulation for internal components.