The **W2CE-51D-R2/UL** is a specific model of an **AC Axial Fan** manufactured by **Sanyo Denki** (San Ace). It is designed for high-performance thermal management in industrial equipment, servers, and power supplies. --- ### 1. Technical Specifications Below are the primary electrical and mechanical characteristics of this component: | Feature | Specification | | :--- | :--- | | **Input Voltage** | 100V AC (Standard Range: 90V - 110V) | | **Frequency** | 50 / 60 Hz | | **Rated Current** | 0.21 A (at 50Hz) / 0.18 A (at 60Hz) | | **Power Consumption** | 17 W / 15 W | | **Speed (RPM)** | 2700 / 3100 RPM | | **Airflow Rate** | 88.3 / 102.4 CFM (Cubic Feet per Minute) | | **Noise Level** | 41 / 44 dB(A) | | **Frame Size** | 120mm x 120mm x 38mm | | **Bearing Type** | Dual Ball Bearing | --- ### 2. Key Electronic Components & Features The W2CE-51D-R2/UL is not just a motor; it contains several critical sub-components that ensure its reliability and safety: * **Shaded Pole Induction Motor:** Unlike DC fans that use electronic commutation (ESCs), this AC fan typically uses a shaded pole motor. This makes it highly robust against electrical noise and simple to drive directly from mains power. * **Impedance Protection:** This is a safety feature where the motor's coils are designed so that if the fan is stalled (locked rotor), the internal impedance prevents the current from rising to a level that would cause a fire. * **Dual Ball Bearing System:** This electronic part ensures a high MTBF (Mean Time Between Failures), typically rated for 25,000 to 40,000 hours of continuous operation at 60°C. * **UL/CSA Certification:** The "UL" suffix indicates it meets North American safety standards for flammability and electrical insulation. --- ### 3. Wiring and Connection This specific model uses **Lead Wires** for electrical connection rather than terminal pins. ```text Wiring Configuration: - Red/Black or Black/Black (Polarity does not matter for AC Fans) - Input: 100V AC Single Phase ``` --- ### 4. Typical Applications * **Control Panels:** Removing heat from industrial PLC enclosures. * **Servers/Storage:** High-pressure cooling for rack-mounted hardware. * **Power Supplies:** Cooling large transformers or rectifiers.