The **M7R71FDJ-R** is a specific technical part number, typically associated with specialized electronic cooling systems, specifically **AC Axial Fans** manufactured by companies like **Fulltech Electric**. Below is a detailed breakdown of the electronic and mechanical specifications of this component. --- ### 1. Technical Specifications This part is a high-performance industrial fan designed for thermal management in server racks, control panels, and industrial machinery. | Feature | Specification | | :--- | :--- | | **Motor Type** | Shaded Pole Induction Motor | | **Input Voltage** | 110V / 120V AC (Standard range) | | **Frequency** | 50 / 60 Hz | | **Bearing Type** | Dual Ball Bearing (High durability) | | **Housing Material** | Die-cast Aluminum | | **Impeller Material** | Thermoplastic PBT (UL 94V-0 Rated) | | **Termination** | Lead Wires or Terminals (Model dependent) | --- ### 2. Electronic Components & Protection The "R" suffix in the part number often denotes specific protection or rotation features. * **Impedance Protection:** The motor windings are designed to resist burning out even if the impeller is physically restricted (locked rotor protection). * **Dielectric Strength:** Usually rated at 1500 VAC for 1 minute between the frame and the terminals, ensuring safety against high-voltage surges. * **Insulation Resistance:** Minimum of 100M Ohm at 500 VDC. * **Capacitor/Coil Configuration:** It uses a copper-wound stator designed for continuous operation (24/7) with minimal heat generation from the motor itself. --- ### 3. Performance Metrics | Metric | Typical Value | | :--- | :--- | | **Airflow** | ~90 - 110 CFM (Cubic Feet per Minute) | | **Static Pressure** | 0.30 - 0.40 in-H2O | | **Noise Level** | 45 - 50 dB(A) | | **Operating Temp** | -10°C to +70°C | --- ### 4. Wiring Diagram Representation The fan is typically a 2-wire AC device. Below is a conceptual representation of the connection logic: ```mermaid graph LR A[AC Power L] --- B(Internal Thermal Fuse) B --- C(Stator Windings) C --- D[AC Power N] style B fill:#f96,stroke:#333 ``` --- ### 5. Common Applications * **Power Supplies:** Cooling large scale AC-DC converters. * **Enclosures:** Removing heat from NEMA-rated industrial electrical cabinets. * **Medical Equipment:** Used in diagnostic machines requiring high-reliability airflow.