설명

EC17251 is a large-sized square axial flow cooling fan with dimensions of 172 × 172 × 51mm, designed specifically for equipment requiring ultra-high air volume such as telecommunications rooms, large UPS systems, energy storage cabinets, and industrial air conditioners. Supports 24V/48V DC power supply, customizable PWM speed regulation, FG speed feedback, and IP54 protection. It has the characteristics of large air volume, stable operation, and high load resistance, making it an ideal strong exhaust fan for large-scale thermal management solutions.

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1. EC electronic commutation technology, efficient and energy-saving by 50%

This is the core highlight of this fan: it adopts EC brushless DC motor technology, which improves energy efficiency conversion rate by about 50% compared to traditional AC induction motor fans. With the same heat dissipation effect, power consumption is reduced by half, and long-term use can significantly save electricity costs; Simultaneously supporting soft start function, with low starting current and minimal impact on the power grid, protecting the equipment circuit system.

 2. 100-240V wide voltage input, globally applicable without conversion

The wide voltage design is compatible with global power grid standards, whether it is 110V North American standard, 220V Chinese standard, or 240V European standard, no additional voltage converter is required. One fan travels around the world, making it particularly suitable for export equipment matching and cross-border project use.

3. Complete intelligent control functions and higher temperature control accuracy

Supports PWM pulse width modulation (0-100% stepless speed regulation), FG speed signal feedback (real-time monitoring of speed), RD stall alarm (timely reminder of abnormal situations), seamlessly integrates with equipment control systems to achieve precise temperature control, extend equipment service life, and reduce noise and energy consumption.

 4. Industry standard size with strong interchangeability and compatibility

The 60mm series standard universal specification is 60 × 60 × 25mm, and the bracket installation hole position (50mm × 50mm) is fully compatible with AC/DC fans of the same size. Equipment maintenance and replacement, complete machine matching, and project modification do not require adjusting the rack and openings, and are compatible with all 60mm cavity devices on the market, resulting in lower procurement and usage costs.

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AI Liquid Cooling Application: Large-Format Cooling for High-Power AI Infrastructure

The Fengheng 172×51mm fan series — available in both DC and EC motor versions — is designed for high-airflow, high-static-pressure applications in AI data center liquid cooling infrastructure where 120mm fans cannot deliver sufficient airflow per unit.

Why 172mm for AI Liquid Cooling?

As rack power densities exceed 100 kW and CDU systems scale to serve 20+ racks, the airflow requirements of individual RDHx doors and CDU cabinets increase beyond what arrays of small fans can efficiently handle. The 172mm format provides:

• 3–4× the swept area of a 92mm fan — delivering substantially more airflow per motor and per power watt
• Lower RPM at equivalent CFM — reducing acoustic noise and extending bearing life in 24/7 operations
• Fewer fans per installation — reducing system complexity, wiring cost, and failure points in critical CDU cooling systems

Application Scenarios

Large CDU Cabinet Cooling (EC version recommended): The 172×51mm EC fan with integrated inverter supports direct connection to 200–240V AC supplies, making it ideal for floor-standing CDU cabinets. EC motors provide 30–40% lower power consumption versus AC motors at equivalent airflow — with modulating speed control for efficient partial-load operation.

RDHx for Ultra-High-Density Racks (DC version): For racks exceeding 100 kW (NVIDIA GB200 NVL72, AMD Instinct MI300X multi-node), the 172×51mm DC fan in a 2×3 or 2×4 array delivers sufficient static pressure and airflow to active RDHx doors handling extreme heat loads.

Telecom + Edge AI Node Air Handling: 5G base stations and edge AI compute nodes with liquid-cooled processing units use 172mm fans for their outer enclosure air handling — circulating external air across heat exchanger fins to reject CDU heat.

Liquid Cooling Test Infrastructure: Data center cooling test labs and thermal simulation chambers use 172mm fans to provide precisely controlled airflow for evaluating CDU, RDHx, and cold plate thermal performance.

DC vs EC: Which for Your Application?

Feature	172×51mm DC	172×51mm EC
Input voltage	12V / 24V / 48V DC	200–240V AC
Speed control	PWM (4-wire)	0–10V or Modbus
Motor efficiency	85–90%	90–95%
Best for	IT rack RDHx, OCP Open Rack	CDU cabinets, standalone cooling units
MTBF	≥70,000h (dual ball bearing)	≥60,000h

Custom voltage, connector, IP rating, and speed control options available for OEM CDU and RDHx manufacturers. CE, RoHS, VDE certified.

Request 172mm Fan Datasheet for Liquid Cooling Applications →