The **OA2A80-R100** is a specific model of an **AC Axial Fan**, typically manufactured by companies like **Orion Fans**. These fans are engineered for thermal management in industrial equipment, server racks, and power supplies. Below is a detailed breakdown of its electronic and mechanical specifications. --- ### 1. Key Technical Specifications The "OA2A80" prefix generally denotes the series and physical size (80mm), while the suffix "R100" refers to specific performance characteristics (often the bearing type or voltage rating). | Feature | Specification (Typical) | | :--- | :--- | | **Frame Size** | 80mm x 80mm x 38mm | | **Input Voltage** | 115V AC or 230V AC (Model dependent) | | **Frequency** | 50 / 60 Hz | | **Bearing System** | Dual Ball Bearing (indicated by "B" or "R" series) | | **Airflow** | ~25 - 35 CFM | | **Noise Level** | ~30 - 35 dB | | **Frame Material** | Die-Cast Aluminum | | **Impeller Material** | PBT, UL94V-0 Plastic | --- ### 2. Internal Electronic Components The OA2A80-R100 is an **AC Induction Motor** fan. Unlike DC fans that use complex PCB controllers, this AC fan relies on simpler electromagnetic principles: * **Stator Windings:** Copper coils that create a rotating magnetic field when connected to AC power. These are usually protected by Class B insulation to withstand high temperatures. * **Shaded Pole Motor:** Most fans in this size category use a shaded-pole design, which is highly reliable because it lacks brushes or complex starting switches that can wear out. * **Capacitor (Internal):** Some high-efficiency variants include a small internal capacitor to help phase-shift the current and start the motor rotation. * **Thermal Protection:** Integrated impedance protection or a thermal fuse to prevent the motor from catching fire if the blades are obstructed (Locked Rotor Protection). --- ### 3. Connection and Installation The "R100" variation often specifies the terminal or lead-wire configuration: 1. **Terminals:** Most models feature two flat metal solder/quick-connect terminals. 2. **Lead Wires:** Some variants come with pre-stripped wires (usually UL1007, 24AWG). 3. **Grounding:** Because the frame is aluminum, a grounding screw hole is provided to prevent electrical shock if a winding shorts to the frame. --- ### 4. Environmental and Safety Ratings * **Operating Temperature:** Typically -20°C to +80°C. * **Life Expectancy:** Approximately 60,000 hours (at 40°C) due to the high-quality ball bearing system. * **Certifications:** Usually carries UL, cUL, TUV, and CE marks for international safety compliance.