UL Certified Constant Airflow Fan Motor 120VAC Input 45W

AirVent 3.3inch EC fan Motor

EC stands for Electronically Commutated, and it combines AC and DC voltages bringing the best of both worlds. The motor runs on a DC voltage, but with a single phase 115VAC/230VAC or three phase 400VAC supply. The motor incorporates voltage transformation within the motor. The non-rotating part of the motor (stator) is extended to make room for an electronic PCBoard which includes power transformation AC to DC, as well as the controls.

An EC motor (Electronically Commutated) is a brushless, direct current, external rotor type of motor. In commutation electronics, an AC voltage is changed into a direct voltage by a commutator. The motor position is dependent upon voltage supplied via an inverter module (similar to the principle of a frequency inverter). The EC commutation electronics are different from a frequency inverter in that they decide how the motor phases in the stator are supplied with current (commutation) depending on position, rotation direction and default.

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EC Motors Great Advantages

Advantages of EC technology

Very high degree of efficiency

Integrated controller (continuous control)

Very simple connection

Additional functions (pressure control, airflow, speed, temperature, air quality, etc.)

Smaller-sized motor for the same level of performance

Less power consumption

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AirVent 3.3 inch EC Motor Constant Airflow Developed in 2021

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AirVent 3.3inch EC fan Motor2

Retek 3.3inch EC motor Great Advantages

- Perfect drop-in replacement of 3.3” PSC motors

- Controller embedded connecting to power source 120VAC/230VAC directly.

- Built by UL standards and now under UL certification procedures.

- Power range 20W~Max. 200W.

- Efficiency over 80%, MORE energy saving.

Applications: central ventilation system/bathroom vent fans/air coolers/standing fans/wall bracket fans/air purifiers/humidifiers/industrial ventilation fans/air conditioners/automobile cooling fans

Retek 3.3 INCH EC Motors

Excellant Optional Solutions

(a) AirBoost version: Sensorless constant airflow software compatible with Android and Windows.

(b) DIP-SWITCH version:16 Speeds combination.

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HOT knock-out features

AirBoost version

Re-define your products performance connecting Retek software from your PC/Mobile Phone to motors. Simply achieve the constant airflow performance.

DIP-SWITCH version

Define the motor performance by 16 Optional DIP-Switches with a small screwdriver from rear cap window.
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AirVent 3.3inch EC fan Motor9

AirBoost Version Outline (Model: W8380AB-120)

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AirBoost Version Performance(Constant Airflow)

Testing Pictures (Testing Standard: AMCA)

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Testing Results (Example for reference)

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DIP-SWITCH version (16 speeds combination)

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Testing Results (Example for reference)

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Tranditional PSC motor pictures

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Post time: Mar-09-2022