The **W2AC-AB3Y-R** is a specific variant of an industrial-grade **AC Axial Fan** manufactured by **Sanyo Denki** (San Ace series). This part is designed for high-performance cooling in telecommunications, server racks, and industrial control cabinets. --- ## 1. Technical Specifications | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 100V to 240V AC (Universal AC) | | **Frequency** | 50/60 Hz | | **Current / Power** | ~0.11A / 10W (Typical) | | **Speed** | High Speed (approx. 2500 - 3000 RPM) | | **Airflow** | High Airflow (typically ~100+ CFM depending on size) | | **Bearing Type** | Dual Ball Bearing (Long life) | | **Frame Material** | Aluminum Die-cast | | **Impeller Material** | Plastic (Flame Retardant UL94V-0) | --- ## 2. Key Electronic Features ### A. Integrated AC-DC Conversion Unlike standard AC fans that use induction motors, the "AC" series from Sanyo Denki often utilizes a **Brushless DC (BLDC) motor** with an integrated AC-to-DC converter circuit. This allows the fan to: * Operate across a wide voltage range (100V–240V). * Maintain consistent performance regardless of power frequency (50Hz vs 60Hz). * Consume significantly less power than traditional AC induction fans. ### B. Protection Circuits * **Locked Rotor Protection:** The electronics detect if the blades are obstructed and automatically cut power to prevent the motor coils from overheating. * **Reverse Polarity/Surge Protection:** Built-in protection against voltage spikes common in industrial environments. ### C. The "R" Suffix The **-R** at the end of the part number typically denotes **RoHS Compliance**, indicating that the electronic components (solder, capacitors, circuit board) are free from hazardous substances like lead and cadmium. --- ## 3. Wiring and Connection The W2AC series generally uses a 2-wire lead system for power, but some specialized versions include a third wire for monitoring: ```text Wire Color Code (Typical): - Black: Line (L) - Gray/Blue: Neutral (N) - (Optional) Yellow/Brown: Speed Sensor / Alarm Signal ``` --- ## 4. Common Applications * **Networking Gear:** Cooling high-density switches and routers. * **Industrial Panels:** Heat dissipation for PLCs and motor drives. * **Medical Equipment:** Reliable cooling for imaging and diagnostic tools.