Beschreibung
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.
172x150x51MM (6.77″x5.90″x2.00″) -EC COOLING FAN SERIES
| MODEL： | FH17251 |
| VOLTAGE： | 110V/220V |
| MATERIAL: | Frame: Plastic (UL94V-0)/ Impeller: Plastic (UL94V-0) |
| EXPECTED LIFE: | Ball Bearing 50,000hrs (40°C) |
| SAFETY STANDARDS: | CCC,ROHS,CE |
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.
| P&Q CURVE (AT RATED VOLTAGE) | DIMENSIONS DRAWING |
| Model | Bearing Type | Rated Voltage | Free | Rated Current | Rated Input Power | Speed | Maximum Air Flow | Maximum Air Pressure | Noise | Weight | |
| PART NO. | B | VAC | Hz | AMP | WATT | R.P.M | m3/min | CFM | mmH2O | DB-A | g |
| 型号 | 轴承 | 电压 | 频率 | 额定电流 | 额定功率 | 转速 | 最大风量 | 最大风压 | 噪音 | 重量 | |
| FH17251C | Ball | 100 to 125 | 50/60 | 0.45 | 38/36 | 2600/3000 | 4.76/5.48 | 170/196 | 11.5/14.0 | 49/56 | 710 |
| Ball | 100 to 125 | 50/60 | 0.3 | 28/27 | 2400/2300 | 4.34/4.76 | 155/170 | 7.5/9.7 | 45/49 | 710 | |
| Ball | 100 to 125 | 50/60 | 0.15 | 21/20 | 1900/1500 | 3.83/4.34 | 137/155 | 3.0/3.9 | 39/45 | 710 | |
| Ball | 220 to 240 | 50/60 | 0.23 | 38/36 | 2600/3000 | 4.76/5.48 | 170/196 | 11.5/14.0 | 49/56 | 710 | |
| Ball | 220 to 240 | 50/60 | 0.18 | 28/27 | 2400/2300 | 4.34/4.76 | 155/170 | 7.5/9.7 | 45/49 | 710 | |
| Ball | 220 to 240 | 50/60 | 0.12 | 21/20 | 1900/1500 | 3.83/4.34 | 137/155 | 3.0/3.9 | 39/45 | 710 | |
| Ball | 380 | 50 | 0.08 | 28 | 2600 | 5.48 | 170 | 14 | 49 | 710 | |
| Ball | 380 | 50 | 0.09 | 21 | 2400 | 4.76 | 155 | 9.7 | 45 | 710 | |
| 提示1:如果您需要的转速,电压,或者其它功能不在这清单上，请与我们联系. If you want another RPM,voltage or functions which one in the lise ,please contact our sales. | |||||||||||
| 提示2:以上数据仅供参考,产品详细信息请参照承认书,如有变更恕不另行通知. Above specifcations are only for reference ,product have a detail in the approcal sheet, if specifaction are subject to change without notice. | |||||||||||
FAQ
Can you provide specifications or selection support?
Sure, please contact us to obtain the PDF specification sheet and technical selection support for EC9225
Can we get samples for testing for free?
Yes, we can provide free sample testing for low-cost products.
What is the warranty period for a fan?
Under normal usage conditions, we offer a 12-month warranty period.
How to get the samples?
First, contact us at [email protected]. Then, tell us your product requirements (voltage, size, speed, etc.). After receiving your information and confirming your requirements, we will produce a sample within three days.
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 →
