The **W2AP-53A-R/UL** is a high-performance, industrial-grade AC axial fan manufactured by **Sanyo Denki** (San Ace series). It is specifically designed for cooling electronic enclosures and machinery where high reliability and significant airflow are required. --- ### ## Technical Specifications | Feature | Specification | | :--- | :--- | | **Input Voltage** | 100V AC (50/60Hz) | | **Frame Size** | 120mm x 120mm x 38mm | | **Current Rating** | 0.14A / 0.12A | | **Power Consumption** | 11W / 9W | | **Speed** | 2,700 / 3,100 RPM | | **Max Airflow** | 88.3 / 102.4 CFM | | **Max Static Pressure** | 58.8 / 74.5 Pa | | **Noise Level** | 40 / 44 dB(A) | | **Bearing Type** | Dual Ball Bearing | --- ### ## Key Electronic Components & Features The internal electronic structure of this fan is designed for durability and compliance with international safety standards: #### 1. Shaded Pole Motor The "W2AP" series typically utilizes a **shaded-pole induction motor**. This is a simple type of self-starting AC single-phase motor. * **Electronic Simplicity:** It does not require a starting capacitor, making it more robust in high-heat environments where capacitors might fail. * **Impedance Protection:** The motor is "Impedance Protected," meaning the windings are designed to limit current flow if the rotor is locked, preventing the fan from catching fire due to overheating. #### 2. Dual Ball Bearing System From an electromechanical perspective, the use of **dual ball bearings** is critical. * **Longevity:** It ensures a high L10 life (typically 40,000 to 70,000 hours at 40°C). * **Orientation:** Unlike sleeve bearings, ball bearings allow the fan to be mounted in any orientation (horizontal, vertical, or angled) without affecting performance. #### 3. UL and Safety Certifications The suffix **/UL** indicates that the internal wiring, insulation, and plastic components meet **UL (Underwriters Laboratories)** safety standards for flame retardancy and electrical insulation. * **Frame Material:** Usually Aluminum die-cast (excellent heat dissipation). * **Impeller Material:** Plastic (UL94V-0 rated, self-extinguishing). --- ### ## Wiring Information This fan uses a standard 2-wire AC connection. Because it is an AC motor, there is no polarity (positive/negative), but proper grounding of the metal frame is recommended. ```text Wiring Lead Colors (Standard): - Black: Live / Neutral - Black: Live / Neutral - Ground: Connection via screw hole on the aluminum frame ``` ---