Product Introduction
Modern EC backward curved silent centrifugal fans are designed with efficiency and reliability as key priorities. By selecting the appropriate impeller design and motor technology, these fans can deliver optimal performance while minimizing energy consumption. Advanced manufacturing techniques and balanced impellers contribute to smooth operation, reduced vibration, and extended service life.
EC Backward Curved Silent Centrifugal Fan Technical Parameters:
|
Model No. |
Rated |
Operation Voltage |
Frequency |
Rated |
Rated Power |
Rated |
Air Flow |
Air |
Noise |
|
VAC |
VAC |
Hz |
A |
W |
RPM |
m3/h |
Pa |
dBA |
|
|
EN-B220-H044-E115-A01 |
115 |
90~135 |
50/60 |
1.90 |
106 |
3050 |
1110 |
670 |
70 |
|
EN-B220-H044-E230-A01 |
230 |
184~274 |
50/60 |
0.95 |
106 |
3050 |
1110 |
670 |
70 |
Outline Drawing
Performance Curve
Connection
|
DC Wire |
AC Wire |
||
|
Color |
Function |
Color |
Function |
|
Red |
+10VDC |
Brown |
L |
|
Blue |
GND |
Blue |
N |
|
Yellow |
0~10VDC/PWM |
Green/Yellow |
PE |
|
White |
FG |
||
Energy efficiency is a defining feature of EC backward curved silent centrifugal fans. The electronically commutated motor operates with significantly higher efficiency than conventional AC motors, especially under part-load conditions. This allows ventilation systems to meet stringent energy regulations and sustainability targets without compromising performance.
The EC motor enables precise speed control through standard interfaces such as PWM, 0–10V, or Modbus communication. This makes the fan fully compatible with modern building management systems and intelligent control strategies. Airflow can be dynamically adjusted based on temperature, pressure, humidity, or air quality sensors, ensuring optimal ventilation only when needed.
Our factory
FAQ
Q: 1. Are EC fans suitable for high-efficiency building projects?
A: EC fans are widely used in high-efficiency and green building projects. Their low energy consumption supports sustainability goals. Precise control enables demand-based ventilation. This helps meet modern building efficiency standards.
Q: 2. How does temperature affect EC fan performance?
A: EC fans are designed to operate within a specified temperature range. Performance remains stable under normal operating conditions. High ambient temperatures may affect maximum output. Temperature limits should be checked during selection.
Q: 3. What protection features are included in EC centrifugal fans?
A: EC centrifugal fans typically include built-in protection functions. These may include overload, overvoltage, and thermal protection. The integrated controller helps prevent motor damage. This improves reliability during long-term operation.
Q: 4. Can EC fans be used in dust or industrial environments?
A: EC fans can be used in industrial environments when properly specified. Housing design and protection class should match the application. Filtration and regular inspection may be required. Application conditions should be clearly defined before selection.
Q: 5. Are EC fans suitable for continuous 24/7 operation?
A: Yes, EC fans are designed for continuous operation. High motor efficiency reduces heat generation. Integrated protection features support stable long-term use. They are suitable for ventilation systems requiring nonstop operation.