The part number **W2AC-AAAA-R** typically refers to a high-performance **AC Axial Fan** manufactured by **Sanyo Denki** as part of their **San Ace** series. These fans are used for thermal management in industrial equipment, server racks, and power supplies. --- ### 1. Technical Specifications The following table outlines the general electronic and mechanical characteristics of the W2AC-AAAA-R series: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 100V - 240V AC (Wide Range) | | **Frequency** | 50 / 60 Hz | | **Frame Size** | 120mm x 120mm x 38mm (Typical) | | **Bearing Type** | Dual Ball Bearing | | **Termination** | Lead Wires (R indicates RoHS compliance) | | **Expected Life** | 40,000 to 60,000 Hours at 60°C | | **Material** | Aluminum Frame / Plastic Impeller (UL94V-0) | --- ### 2. Electronic Components & Features The W2AC series is distinct from standard AC induction fans due to its internal electronics: * **ACDC Converter:** Unlike traditional AC fans that use a shaded-pole motor, this model often incorporates an internal circuit to convert AC input to DC to drive a brushless motor. This results in significantly lower power consumption. * **Protection Circuitry:** * **Burnout Protection:** Locked rotor protection prevents the coils from overheating if the fan is obstructed. * **Reverse Polarity/Surge Protection:** Built-in safeguards against voltage spikes common in industrial power grids. * **Safety Standards:** These parts are usually UL, CSA, and TUV certified to meet global safety requirements for electrical appliances. --- ### 3. Part Number Breakdown The nomenclature for Sanyo Denki fans follows a specific logic: | Segment | Meaning | | :--- | :--- | | **W2** | Series designation (often indicating AC-input, high-efficiency models) | | **AC** | AC Voltage input type | | **AAAA** | Specific performance code (Airflow, Static Pressure, and RPM) | | **R** | RoHS (Restriction of Hazardous Substances) Compliant | --- ### 4. Implementation Example If you are integrating this fan into a system, ensure the wiring follows the standard color codes for AC input: ```markdown - Black/Brown: Line (L) - White/Blue: Neutral (N) - Green/Yellow: Ground (GND) - if applicable to the frame ```