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Low-Noise SRF Kitchen Centrifugal Fan - China Suppliers & Factory for Exhaust and Ventilation Solutions
Parameters
| Model | Speed (r/min) |
Power (kW-P) |
Traffic (m³/h) |
Total Pressure (Pa) |
Voltage (V) |
Frequency (Hz) |
Horsepower (HP) |
|---|---|---|---|---|---|---|---|
| 2.8A | 1450 | 1.1-4 | 2680-4770 | 580-430 | 220/380 | 50 | 1.5 |
| 3A | 1450 | 1.5-4 | 3267-5544 | 600-450 | 220/380 | 50 | 2 |
| 2.2-4 | 3850-6780 | 712-590 | 220/380 | 50 | 3 | ||
| 3.2A | 1450 | 2.2-4 | 3960-6039 | 630-500 | 220/380 | 50 | 3 |
| 960 | 1.1-6 | 2772-5148 | 380-350 | 380 | 50 | 1.5 | |
| 3.5A | 1450 | 3-4 | 5050-7810 | 1000-820 | 220/380 | 50 | 4 |
| 1450 | 4-4 | 5560-8217 | 1200-840 | 380 | 50 | 5.5 | |
| 960 | 1.5-6 | 3180-5645 | 450-400 | 380 | 50 | 2 | |
| 4A | 1450 | 5.5-4 | 7030-11680 | 1280-990 | 380 | 50 | 7.5 |
| 960 | 2.2-6 | 5158-7980 | 620-512 | 380 | 50 | 3 | |
| 960 | 3-6 | 5677-8345 | 650-520 | 380 | 50 | 4 | |
| 4.5A | 1450 | 7.5-4 | 7940-14200 | 1470-1180 | 380 | 50 | 10 |
| 960 | 4-6 | 7420-12350 | 810-720 | 380 | 50 | 5.5 | |
| 5A | 960 | 5.5-6 | 11920-17880 | 970-750 | 380 | 50 | 7.5 |
| 7.5-6 | 13405-18110 | 1100-840 | 380 | 50 | 10 | ||
| 6A | 960 | 7.5-6 | 12890-19890 | 1150-980 | 380 | 50 | 10 |
Frequently Asked Questions
Q1
What does the model number (e.g., 2.8A, 3A, 4.5A) represent in the parameter table?
The model number refers to the fan's impeller or housing size designation. A larger number generally indicates a larger fan with higher airflow capacity and power output. For example, the 6A model supports traffic up to 19,890 m³/h, while the 2.8A model handles up to 4,770 m³/h.
Q2
What is the difference between 4-pole (1450 r/min) and 6-pole (960 r/min) motor configurations?
The 4-pole motors run at approximately 1450 r/min and deliver higher total pressure and airflow, making them suitable for applications requiring strong ventilation force. The 6-pole motors run at approximately 960 r/min, operating more quietly and energy-efficiently, ideal for scenarios where lower noise and moderate airflow are preferred.
Q3
Which models support dual voltage (220V/380V), and which require 380V only?
Smaller models such as 2.8A, 3A, 3.2A (1450 r/min), and 3.5A (1450 r/min, 4-pole) support dual voltage at 220V/380V, offering greater installation flexibility. Larger models — including 4A, 4.5A, 5A, and 6A — operate exclusively on 380V, which is standard for industrial three-phase power supply environments.
Q4
How do I select the right model based on required airflow (Traffic m³/h)?
First, calculate the required air volume for your space based on room size and air change rate. Then match it to the Traffic (m³/h) column in the parameter table. For instance, if you need approximately 10,000–15,000 m³/h, models like the 4.5A or 5A would be appropriate choices. Always consider total pressure requirements alongside airflow.
Q5
What does "Total Pressure (Pa)" indicate, and why is it important?
Total pressure (measured in Pascals) represents the fan's ability to overcome resistance in the duct system, including friction losses and dynamic pressure. A higher total pressure rating means the fan can push air through longer or more complex duct systems. For example, the 3.5A at 1450 r/min offers 820–1000 Pa, while the 4.5A at 1450 r/min reaches up to 1470 Pa.
Q6
All models operate at 50 Hz frequency — are these fans compatible with international power standards?
All listed models are rated at 50 Hz, which is the standard frequency used in most countries across Europe, Asia, Africa, and Australia. For regions using 60 Hz power supplies (such as the United States, Canada, or parts of Latin America), please consult the manufacturer to confirm compatibility or inquire about 60 Hz variants, as operating at a different frequency may affect motor speed and performance.