Product Introduction
Energy saving is the most prominent advantage of EC ventilation axial fan. Compared with traditional AC axial fans, energy consumption can be reduced by 20–50%, with even greater savings in variable-speed applications.
This advantage stems from two key design factors. First, the high efficiency of permanent magnet synchronous motors allows energy conversion efficiency to exceed 90%, far surpassing the 70–80% efficiency of conventional induction motors. Second, the "on-demand output" intelligent speed control enables the fan to dynamically adjust speed according to actual system requirements, avoiding energy waste caused by constant-speed operation.
In HVAC systems, for example, EC axial fans significantly reduce overall system energy consumption. Although the initial purchase cost may be slightly higher, the energy savings typically offset the cost difference within 1–3 years, resulting in lower total lifecycle costs.
EC ventilation axial 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-G250-H040-E115-B01 |
115 |
90~135 |
50/60 |
2.70 |
175 |
3100 |
2180 |
350 |
75 |
|
EN-G250-H040-E230-B01 |
230 |
184~274 |
50/60 |
1.35 |
175 |
3100 |
2180 |
350 |
75 |
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 |
||
Low-noise performance is another key advantage of EC ventilation axial fan. Through both mechanical and control optimization, operating noise is significantly reduced.
The brushless motor design eliminates friction between brushes and commutators, fundamentally reducing mechanical noise. Maintenance-free ball bearings ensure smooth operation without abnormal sounds. Meanwhile, precise electronic speed control minimizes noise caused by start-stop impacts and speed changes. Optimized airfoil impellers and inlet guide rings further reduce aerodynamic noise caused by airflow turbulence.
Testing shows that under equivalent airflow conditions, EC axial fans can reduce noise levels by 5–15 dB, making them ideal for hospitals, laboratories, offices, residential buildings, and other noise-sensitive environments, while also improving industrial workplace conditions.
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FAQ
1. Does an EC fan require special electrical wiring?
EC fans do not require external frequency converters. Standard power supply and control signal wiring are sufficient. Wiring must comply with electrical specifications. Proper grounding is also important for safe operation.
2. What happens if an EC fan is overloaded?
EC fans typically include built-in overload protection. The integrated controller limits current and temperature. If overload occurs, the fan may reduce speed or shut down. This helps protect the motor from damage.
3. How should airflow direction be verified during installation?
Airflow direction should match system design requirements. The fan housing or documentation usually indicates airflow direction. Incorrect direction can reduce performance. Verification should be done before final installation.
4. Are EC fans sensitive to voltage fluctuations?
EC fans are designed to tolerate normal voltage variations. Excessive fluctuations may affect performance or protection functions. Stable power supply is recommended. Voltage limits should be checked in the technical specifications.