## Technical Overview: W2AP-52A-R/UL The **W2AP-52A-R/UL** is a high-performance, industrial-grade AC axial fan manufactured by **WIZES** (commonly associated with high-reliability cooling solutions). It is designed for thermal management in server racks, control panels, and industrial machinery. --- ### Core Specifications Below are the primary electronic and physical characteristics of the unit: | Feature | Specification | | :--- | :--- | | **Voltage** | 220V - 240V AC | | **Frequency** | 50 / 60 Hz | | **Current** | Approx. 0.20A - 0.25A | | **Power Consumption** | ~35 Watts | | **Speed (RPM)** | 2,700 - 3,000 RPM | | **Airflow** | High Volume (approx. 90-110 CFM) | | **Bearing Type** | Dual Ball Bearing | | **Safety Certification** | UL (Underwriters Laboratories) Recognized | --- ### Key Electronic Components & Construction #### 1. Motor Type The unit utilizes a **Shaded Pole Induction Motor** or a **Permanent Split Capacitor (PSC) Motor**. These are standard for AC fans because they provide high reliability and do not require brushes, which reduces electrical noise and mechanical wear. #### 2. Bearing System (Dual Ball Bearing) The "R" in the part number often denotes a specific bearing or rotation configuration. Dual ball bearings are used to: * Extend the lifespan to over 50,000 hours. * Allow the fan to be mounted in any orientation (horizontal, vertical, or angled) without affecting performance. #### 3. Housing and Impeller * **Frame:** Typically made of Die-cast Aluminum, which acts as a heat sink for the motor itself. * **Blades:** Usually made of reinforced thermoplastic (PBT) or metal, designed for aerodynamic efficiency and low acoustic noise. #### 4. Safety and Protection * **Impedance Protection:** The motor is designed so that if the fan blade is stalled (blocked), the internal resistance prevents the coils from overheating and catching fire. * **UL Approval:** The "UL" suffix indicates it meets strict North American safety standards for electrical insulation and fire resistance. --- ### Typical Applications * **Telecommunications:** Cooling for base stations and switches. * **Industrial Power Supplies:** Heat dissipation for high-voltage transformers. * **HVAC Systems:** Small-scale ventilation for electronic enclosures.