EC Backward Curved Blade Centrifugal Fans

EC Backward Curved Blade Centrifugal Fans

Motor type: BLDC external rotor motor
Impeller Diameter: 355mm
Impeller Material: PA66
Direction of Rotation: CW, see on rotor
Speed Control: 0-10VDC/PWM
Type of Protection: IP44 / IP54
Insulation Class: B
Operation Mode: S1
Bearing: Maintenance-free ball bearing
Ambient Temperature: -25~+60℃
Motor Protection: Locked-Rotor Protection, Reverse Polarity Protection, Thermal Protection, Soft Start
Certificate: CE, LVD, ROHS, ETL
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Description
Technical Parameters

Product Introduction

From an environmental perspective, EC backward curved blade centrifugal fans fully comply with international environmental standards such as RoHS and CE. All components are manufactured using environmentally friendly materials that do not release harmful substances into the environment.

The high-efficiency EC motor greatly reduces electricity consumption, helping to lower carbon emissions and support sustainable industrial operations.

Furthermore, the brushless design eliminates dust generated by carbon brush wear, preventing secondary pollution. Combined with low noise operation, the fan meets strict environmental regulations and is suitable for industries such as food processing, pharmaceutical manufacturing, and renewable energy production.

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EC backward curved blade centrifugal fans technical parameters:

 

Model No.

Rated
Voltage

Operation Voltage

Frequency

Rated
Current

Rated Power

Rated
Speed

Air Flow

Air
Pressure

Noise
Level

VAC

VAC

Hz

A

W

RPM

m3/h

Pa

dBA

EN-B355-H106-E115-C01

115

90~135

50/60

4.00

450

1900

4400

650

76

EN-B355-H106-E230-C01

230

184~274

50/60

2.00

450

1900

4400

650

76

EN-B355-H106-E380-C01

380

310~460

50/60

1.25

450

1900

4400

650

76

 

Outline Drawing:

 

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Performance Curve

 

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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

 

For ventilation systems in commercial buildings, EC backward curved blade centrifugal fans provide an efficient and intelligent solution. These fans feature high efficiency, low noise operation, and advanced control capabilities, making them suitable for shopping malls, office buildings, and hotels.

The airflow range can be adjusted dynamically according to occupancy levels and environmental conditions at different times of the day. This ensures optimal indoor air quality while minimizing unnecessary energy consumption.

The compact design allows the fan to be installed inside ceilings, ventilation ducts, or concealed spaces, preserving the aesthetic appearance of indoor environments.

Additionally, the fan can be integrated with building automation systems, allowing coordinated operation with air conditioning systems and fresh air ventilation units. This intelligent control significantly improves building energy management and reduces property operating costs.

 

1Product details

 

Our factory

 

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2Typical Applications

4Package and Transportation

 

FAQ

1. Can EC fans be integrated into prefabricated ventilation units?

Yes, EC fans are commonly used in prefabricated ventilation units. Compact size and integrated control simplify unit design. They support standardized production. This makes them suitable for modular ventilation systems.

2. Are EC centrifugal fans suitable for high-demand commercial projects?

EC centrifugal fans are suitable for high-demand commercial projects. They offer stable performance and energy efficiency. Flexible control supports complex system requirements. Proper specification ensures reliable operation.

3. Are EC centrifugal fans suitable for energy audits or efficiency upgrades?

EC centrifugal fans are often selected for energy audits and retrofit upgrades. They help reduce power consumption compared to traditional fans. Improved control supports energy optimization. This makes them suitable for efficiency improvement projects.

4. How stable is airflow output from an EC fan?

EC fans provide stable airflow due to electronic speed control. Output remains consistent under changing conditions. Integrated control compensates for minor system variations. This improves system performance and reliability.

5. Are EC fans suitable for export to Europe and North America?

EC fans are commonly used in European and North American markets. They are designed to meet regional efficiency and electrical requirements. Voltage and certification options should be confirmed. This makes EC fans suitable for global export projects.

 

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