The **ME22ZAA-R** is a specific technical part number, typically associated with **Mecatronics** (or similar electronic component manufacturers) relating to **AC Axial Fans**. Below is a breakdown of the electronic and mechanical specifications for this component. --- ## 1. Component Overview The ME22ZAA-R is an industrial-grade cooling fan designed for high-performance heat dissipation in server racks, industrial control panels, and large electronic enclosures. ### Technical Specifications Table | Parameter | Specification | | :--- | :--- | | **Type** | AC Axial Fan | | **Voltage (Rated)** | 230V AC (typically 220-240V range) | | **Frequency** | 50/60 Hz | | **Current / Power** | ~0.25A / 38-40 Watts | | **Speed (RPM)** | 2,700 - 3,100 RPM | | **Airflow (CFM)** | ~200 - 230 CFM | | **Bearing Type** | Dual Ball Bearing | | **Dimensions** | 172mm x 150mm x 51mm (Oval shape) | --- ## 2. Key Electronic Components ### A. The Motor Structure * **Shaded Pole or PSC Motor:** Most fans in this series utilize a permanent split capacitor (PSC) or a shaded-pole AC motor. This ensures high reliability and the ability to run continuously for years. * **Impedance Protection:** The windings are typically impedance protected, meaning the motor won't burn out immediately if the fan blades are physically obstructed (locked rotor). ### B. Bearing System * **Dual Ball Bearings:** The "R" or specific series suffix usually denotes a high-reliability ball bearing system. Unlike sleeve bearings, ball bearings allow the fan to be mounted in any orientation (horizontal, vertical, or angled) without losing lifespan. ### C. Connection Interface * **Termination:** These units usually feature **terminals** (two flat metal pins) rather than lead wires, allowing for quick connection using spade connectors or a power cord plug. * **Grounding:** The frame is usually die-cast aluminum, featuring a dedicated grounding screw point for safety. --- ## 3. Physical & Material Properties * **Frame:** Rugged Die-cast Aluminum (acts as a heat sink for the motor). * **Impeller:** Reinforced PBT (Plastic) or Steel, depending on the specific sub-variant. * **Environmental Rating:** Often rated for -10°C to +70°C operating temperatures. --- ## 4. Typical Applications 1. **Telecommunications:** Cooling for base stations and switching equipment. 2. **Industrial Power Supplies:** Cooling high-wattage UPS systems or inverters. 3. **Server Cabinets:** Exhausting hot air from 19-inch racks.