## Overview: W2DYS-243B-R The **W2DYS-243B-R** is a specific model of an AC axial fan, typically manufactured by **Sanyo Denki** (San Ace series). It is designed for high-performance cooling in industrial environments, such as server racks, power supplies, and control panels. --- ### 1. Technical Specifications The electronic and mechanical characteristics of this component are summarized in the table below: | Feature | Specification | | :--- | :--- | | **Component Type** | AC Axial Fan | | **Rated Voltage** | 230V AC | | **Operating Voltage Range** | 180V to 253V AC | | **Frequency** | 50 / 60 Hz | | **Input Power** | ~30W to 40W (Depending on frequency) | | **Rated Speed** | ~2,800 to 3,250 RPM | | **Airflow** | High volume (Approx. 150-180 CFM) | | **Bearing Type** | Dual Ball Bearing | | **Frame Size** | 172mm x 150mm x 51mm (Side-cut / Oval shape) | | **Termination** | Lead Wires (Standard) | --- ### 2. Internal Electronic Components While it is an AC-driven fan, the internal assembly consists of several critical electronic parts: * **Induction Motor (Shaded Pole or Capacitor Run):** Uses a permanent split capacitor (PSC) design to create a phase shift, allowing the motor to start and run efficiently on single-phase AC power. * **Dual Ball Bearings:** Electronic fans of this grade use precision-engineered ball bearings to minimize friction and extend the Mean Time Between Failures (MTBF), often rated for 40,000+ hours. * **Thermal Protector:** Built-in impedance protection or a thermal cutout to prevent the windings from burning out if the motor stalls (locked rotor). * **Stator Windings:** High-quality copper coils insulated to Class B or Class F standards to withstand continuous high-temperature operation. --- ### 3. Wiring Configuration The "R" suffix often indicates RoHS compliance or a specific revision. The standard wiring for this class of 230V fan is: ```yaml Wiring Layout: - Black: Live (L) - Black: Neutral (N) - Green/Yellow: Ground (Earth) - if applicable to the frame ``` --- ### 4. Key Applications * **Industrial Power Supplies:** Cooling large transformers or rectifiers. * **Telecommunications:** Cooling outdoor base stations or indoor server cabinets. * **Automation:** Preventing overheating in PLC (Programmable Logic Controller) cabinets.