The **W2AP-A14-R2/UL** is a specific model of an **Industrial Axial Fan**, typically manufactured by companies like **Fulltech Electric**. These fans are designed for high-performance cooling in industrial enclosures, server racks, and machinery. Below is a detailed breakdown of its electronic and mechanical parts, specifications, and certifications. --- ### 1. Key Technical Specifications The "W2AP" series generally refers to AC-powered axial fans with a metal frame. | Feature | Specification | | :--- | :--- | | **Motor Type** | Shaded Pole Induction Motor (Single Phase) | | **Operating Voltage** | 115V AC (typically 100V–125V range) | | **Frequency** | 50/60 Hz | | **Airflow Direction** | Exhaust over struts (standard) | | **Bearing Type** | Dual Ball Bearing (for long life and high heat resistance) | | **Frame Material** | Die-cast Aluminum (painted black) | | **Impeller Material** | Thermoplastic (PBT) UL 94V-0 Rated | --- ### 2. Internal Electronic Components While these are AC induction motors (simpler than DC brushless fans), they contain several critical electronic elements: * **Stator Windings:** Copper coils wrapped around a laminated steel core. These create the magnetic field necessary to spin the rotor. * **Shaded Pole Ring:** A small copper ring or "shade" on the stator poles that creates a phase shift in the magnetic field, allowing the motor to self-start on AC power. * **Impedance Protection:** The "R2" suffix often denotes that the motor is **Impedance Protected**. This means the motor is designed so that if the fan blade is stalled (locked rotor), the internal resistance prevents the coils from overheating and catching fire. * **Termination:** Usually features lead wires or spade terminals (fast-on) for power connection. --- ### 3. Part Number Decoder Understanding the "W2AP-A14-R2/UL" nomenclature: * **W2AP:** Series identifier (typically 120mm x 120mm x 38mm form factor). * **A1:** Indicates the voltage class (115V AC). * **4:** Often refers to the speed rating (High Speed). * **R2:** Designates the specific bearing type or internal protection (Ball Bearing/Impedance Protected). * **UL:** Indicates the part is certified by Underwriters Laboratories for safety standards. --- ### 4. Environmental & Safety Features * **Insulation Class:** Usually Class B or Class F (rated for temperatures up to 130°C–155°C). * **Dielectric Strength:** Tested to withstand ~1500V AC for one minute between the frame and the terminals. * **Certifications:** UL recognized, CE marked, and RoHS compliant. ---