The **OA2A20-R01** is a specific type of **AC Axial Fan**, typically manufactured by companies like Orion Fans. It is designed for thermal management and cooling in electronic enclosures, server racks, and industrial machinery. Below is the technical breakdown of its electronic and mechanical specifications. ### 1. General Specifications | Feature | Specification | | :--- | :--- | | **Type** | AC Axial Fan | | **Input Voltage** | 230V AC (Standard) | | **Frequency** | 50/60 Hz | | **Airflow** | High Volume (approx. 600+ CFM depending on exact series) | | **Bearing Type** | Dual Ball Bearing | | **Termination** | Terminal block or Lead wires (Standard R01 usually indicates terminals) | --- ### 2. Key Electronic Components #### A. The Motor (Shaded Pole vs. Capacitor Run) The OA2A20-R01 utilizes a **Permanent Split Capacitor (PSC)** or a high-efficiency induction motor. * **Stator:** Comprised of copper windings around a laminated steel core. * **Rotor:** An external rotor design where the permanent magnets or squirrel-cage structure is integrated into the fan blade assembly to save space. #### B. The Bearing System This model uses **Dual Ball Bearings**. * **Electronic Importance:** Ball bearings provide higher resistance to heat and allow for mounting in any orientation (horizontal or vertical) without affecting the motor's lifespan. * **Longevity:** Rated for approximately 60,000+ hours of continuous operation at 40°C. #### C. Integrated Protection Most high-end AC fans like the OA2A20 include built-in protection circuits: 1. **Thermal Protection:** An internal thermal cutout or impedance protection prevents the motor from catching fire if the blades are blocked (Locked Rotor Protection). 2. **Dielectric Strength:** The insulation is typically rated at 1500VAC/min, ensuring safety against high-voltage spikes. --- ### 3. Physical Dimensions & Housing The "220" in the series usually refers to the frame size. * **Dimensions:** 225mm x 225mm x 80mm. * **Frame Material:** Die-cast aluminum (acts as a heat sink for the motor). * **Impeller Material:** PBT Thermoplastic (UL94V-0 rated) or metal, depending on the specific environmental rating. --- ### 4. Comparison Table: 50Hz vs. 60Hz Performance Because this is an AC device, its performance varies based on the input frequency: | Metric | 50 Hz | 60 Hz | | :--- | :--- | :--- | | **Speed (RPM)** | ~2550 | ~2900 | | **Power (Watts)** | ~65W | ~75W | | **Noise Level (dB)** | ~60 dB | ~63 dB | --- ### Summary of Use Case The **OA2A20-R01** is best suited for high-static pressure environments where large volumes of air must be moved. It is commonly found in: * Industrial Control Panels. * Large Power Inverters. * Data Center Cabinets.