The **W2AC-A4CB-R2** is a specific part number typically associated with high-performance AC axial fans, often manufactured by brands like **Sanyo Denki** (San Ace series) or similar thermal management specialists. These components are designed for high-reliability cooling in industrial and telecommunications equipment. --- ### 1. Technical Specifications The part number encodes specific electrical and mechanical characteristics. While internal naming conventions can vary slightly by manufacturer, the general breakdown for this series is as follows: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 230V AC (Standard range 200V - 240V) | | **Frequency** | 50/60 Hz | | **Bearing Type** | Dual Ball Bearing (High durability) | | **Material** | Aluminum frame with plastic/thermoplastic impeller | | **Termination** | Lead Wires (Standard R2 configuration) | | **Protection** | Thermal protection (impedance or thermal cutout) | --- ### 2. Key Electronic Features #### A. Motor Design The unit utilizes a **Shaded Pole** or **Permanent Split Capacitor (PSC)** AC motor. Unlike DC fans that use electronic commutation (ESC), this AC fan relies on the frequency of the power line (50/60Hz) to determine its rotational speed. #### B. Bearings and Longevity The "R2" designation often implies a specific revision or environmental rating. The dual ball bearing system is critical for: * **MTBF (Mean Time Between Failures):** Often rated for 40,000 to 70,000 hours. * **Mounting Orientation:** Can be mounted vertically or horizontally without affecting lifespan. #### C. Safety and Compliance These parts are typically engineered to meet strict international standards: * **UL/cUL Recognized:** Safety standards for electrical components. * **TUV/CE:** Compliance with European safety and EMC directives. * **RoHS Compliant:** Free from hazardous substances like lead or mercury. --- ### 3. Application Use Cases Due to its robust construction, the W2AC-A4CB-R2 is commonly found in: 1. **Server Racks:** Dispersing heat from high-density computing units. 2. **Industrial Control Panels:** Preventing overheating in PLCs and power supplies. 3. **Medical Equipment:** Cooling sensitive imaging or laboratory devices. 4. **Power Inverters:** Managing thermal loads in solar or UPS systems. --- ### 4. Wiring Diagram Representation The electrical connection is straightforward for AC fans. Below is a conceptual representation of the lead wire configuration: ```text [L] Brown/Black Wire -----> Line (230V AC) [N] Blue/White Wire -----> Neutral [G] Green/Yellow -----> Chassis Ground (if applicable) ```