The **W2AC-AC2B-R** is a specific part number belonging to the **W2 Series** of industrial AC fans manufactured by **ebm-papst**. It is a high-performance, compact axial fan designed for cooling electronic cabinets, server racks, and industrial machinery. --- ### 1. Technical Specifications The following table summarizes the key electronic and mechanical characteristics of the W2AC-AC2B-R: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 230 VAC (Single Phase) | | **Frequency** | 50 / 60 Hz | | **Power Consumption** | ~11 Watts | | **Speed (RPM)** | 2700 - 3200 RPM | | **Airflow** | ~45 - 54 m³/h (approx. 26 - 32 CFM) | | **Bearing Type** | Ball Bearing (Maintenance-free) | | **Frame Size** | 60 x 60 x 30 mm | | **Housing Material** | Die-cast aluminum | | **Impeller Material** | Plastic (PA 6.6, fiberglass-reinforced) | --- ### 2. Core Electronic Components The internal construction of this unit involves several critical electronic elements: * **Shaded-Pole Motor:** This fan utilizes a shaded-pole AC motor. This is a simple, robust design that does not require a starting capacitor, making the electronics less prone to failure over time. * **Insulation Class:** Typically Class B. The windings are treated to withstand high temperatures (up to 130°C) without the insulation breaking down. * **Protection Circuitry:** * **Impedance Protection:** The motor is protected against "locked rotor" conditions. If the fan blades are physically obstructed, the electrical impedance of the windings limits the current to prevent the coils from melting or catching fire. * **Electrical Connection:** Usually features 2 lead wires (AWG 22) or spade terminals, depending on the specific sub-batch, though "R" suffixes often denote specific lead wire lengths or RoHS compliance. --- ### 3. Key Features & Applications * **Durability:** The use of ball bearings allows the fan to be mounted in any orientation (horizontal, vertical, or angled) without affecting its lifespan. * **Environmental Resistance:** The die-cast aluminum housing provides excellent heat dissipation and electromagnetic shielding. * **Common Uses:** * Power supply cooling. * Small-scale telecommunications equipment. * Control panels and automation cabinets.