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China 4-72A Centrifugal Fan Suppliers - High Airflow Industrial Factory Solutions for Ventilation
Parameters
| Model | Speed (r/min) |
Power (kW-P) |
Traffic (m³/h) |
Total Pressure (Pa) |
Voltage (V) |
Frequency (Hz) |
Horsepower (HP) |
| 2.5A | 2900 | 0.75-2 | 800-1650 | 790-485 | 220/380 | 50 | 1 |
| 2.8A | 2900 | 1.5-2 | 1131-2356 | 994-606 | 220/380 | 50 | 2 |
| 3.2A | 2900 | 2.2-2 | 1688-3517 | 1300-792 | 220/380 | 50 | 3 |
| 1450 | 1.1-4 | 844-1758 | 324-198 | 220/380 | 50 | 1.5 | |
| 3.6A | 2900 | 3-2 | 2664-5268 | 1578-989 | 220/380 | 50 | 4 |
| 1450 | 1.1-4 | 1332-2634 | 393-247 | 220/380 | 50 | 1.5 | |
| 4A | 2900 | 5.5-2 | 4012-7419 | 2014-1320 | 380 | 50 | 7.5 |
| 1450 | 1.1-4 | 2006-3709 | 501-329 | 220/380 | 50 | 1.5 | |
| 4.5A | 2900 | 7.5-2 | 5712-10562 | 2554-1673 | 380 | 50 | 10 |
| 1450 | 1.1-4 | 2856-5281 | 634-416 | 220/380 | 50 | 1.5 | |
| 5A | 2900 | 15-2 | 7728-15455 | 3187-2019 | 380 | 50 | 20.5 |
| 1450 | 2.2-4 | 3864-7728 | 790-502 | 220/380 | 50 | 3 | |
| 5.6A | 2900 | 22-2 | 10122-25736 | 4152-2330 | 380 | 50 | 30 |
| 1450 | 3-4 | 7062-9885 | 957-759 | 220/380 | 50 | 4 | |
| 6A | 1450 | 4-4 | 6677-13353 | 1139-724 | 380 | 50 | 5.5 |
| 6.3A | 1450 | 5.5-4 | 10110-15810 | 1247-968 | 380 | 50 | 7.5 |
| 7.1A | 1450 | 11-4 | 12676-20513 | 1572-1168 | 380 | 50 | 15 |
| 960 | 3-6 | 8392-13581 | 689-512 | 380 | 50 | 4 |
Frequently Asked Questions
Q1
What is the available speed range for these fan models?
The fan models operate at three main speed ranges: 2900 r/min (high-speed, typically for smaller models such as 2.5A–5.6A), 1450 r/min (medium-speed, available across most models), and 960 r/min (low-speed, available for the 7.1A model). The appropriate speed depends on your airflow and pressure requirements.
Q2
What voltage options are supported by these fans?
Most models support dual voltage of 220V/380V, making them flexible for different electrical installations. Larger models such as 4A, 4.5A, 5A, 5.6A, 6A, 6.3A, and 7.1A operating at higher speeds or power ratings are designed exclusively for 380V supply.
Q3
Which model provides the highest airflow (traffic)?
The 5.6A model operating at 2900 r/min offers the highest airflow range of 10,122–25,736 m³/h, making it the best choice for large-scale ventilation applications requiring maximum air volume delivery.
Q4
What does the power rating notation (e.g., "5.5-2" or "11-4") mean?
The power rating notation combines the motor power in kilowatts (kW) and the number of poles. For example, "5.5-2" means 5.5 kW with a 2-pole motor (higher speed), and "11-4" means 11 kW with a 4-pole motor (medium speed). The number of poles directly affects the motor's rotational speed.
Q5
How do I select the right model based on total pressure requirements?
Choose a model whose total pressure (Pa) range covers your system's required static pressure. For example, if your system requires around 2,000 Pa, the 4A model at 2900 r/min (2014–1320 Pa) or the 5A model at 2900 r/min (3187–2019 Pa) would be suitable candidates. Always account for pressure losses in ductwork when selecting.
Q6
Are all models rated at 50 Hz frequency?
Yes, all models listed in the parameter table operate at a standard frequency of 50 Hz, which is the standard power supply frequency used in most countries in Asia, Europe, Africa, and Australia. If your facility uses 60 Hz power, please consult with a technical specialist before selecting a model.