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[Fan types and features] ACDC Fan (EC fans)
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Appropriate measures against heat generation are essential for various devices equipped with electronic components. Cooling fans play an important role in ensuring stable operation of such devices.
Among these, AC-powered fans are used for a variety of purposes, such as in industrial equipment and facilities, but there is also a growing need to utilize the features of DC Cooling Fan, such as high efficiency and long life.The"ACDC Fan (EC fan*)" meets these needs, achieving the performance of DC Cooling Fan with AC power.
In this article, we will introduce the mechanism of ACDC Fan (EC fans*), the features of SANYO DENKI 's ACDC Fan, and examples of their use.
*Depending on the manufacturer, they may be called ACDC Fan, EC fans, etc., but SANYO DENKI lists them under the same name as "ACDC Fan".
ACDC Fan (EC fan) is a fan that incorporates a miniaturized AC-DC conversion circuit.
It operates by converting AC (alternating current power) to DC (direct current power). Therefore, there is no need to prepare a DC power supply, and it can be operated with an AC power supply. It exhibits the excellent features of DC Cooling Fan such as low power consumption and long life.
In the example shown in Figure 1, power consumption is up to 91% lower than that of our AC Cooling Fan of the same size.
▼Figure 1 Comparison between AC Cooling Fan and ACDC Fan
AC Cooling Fan are also widely used in production line control panels and equipment.
Although the difference in power consumption for a single cooling fan may seem small, by adopting ACDC Fan across an entire production line or facility, significant energy savings can be achieved.
In addition, ACDC Fan consume low power and have a long expected life, which helps reduce maintenance efforts.
By optimizing the shape of the blades and frame, we have achieved high airflow and high static pressure.
Low power consumption has been achieved by optimizing the conversion circuit and motor drive circuit.
Compared to our AC Cooling Fan, the expected life span is improved.
The operating voltage range is AC90V to 264V, and it can be used with either AC100V or AC200V.
The rotation speed remains constant regardless of the input voltage or frequency. Unlike AC Cooling Fan, there is no change in characteristics due to power supply conditions.
*Excluding Centrifugal Fan
The fan speed can be controlled using PWM control function (excluding some models). The fan speed and static pressure can be adjusted according to changes in the heat generation (load) of the device, allowing for efficient cooling and reducing power consumption and noise.
*If you have any questions regarding wiring or other usage, please contact our sales office.
Waterproof models (protection grade IP56/IP68) are also available.
[Released in May 2025] 92x25mm ACDC Fan
May 26, 2025 San Ace | Product News | Product Information | SANYO DENKI CO., LTD.
We have developed and released the ☐92 × 25 mm thick ACDC Fan "San Ace 92AD" 9AD type, which achieves the industry's top*1 high static pressure. It is ideal for cooling servers, communication racks, control panels, etc.
*1 As of May 26, 2025, for ACDC Fan of the same size. (Based on our research)
From here on, we will introduce some examples of ACDC Fan being used.
More details on this case study can be found here: "What is ACDC Fan that reduces the power consumption of equipment?
You can see the details of this case study here: "What is ACDC Fan that achieves the performance of DC Cooling Fan with AC power?"
You can read more about this case here: "What is ACDC Fan that achieves the performance of DC Cooling Fan while still using an AC power source?
[Precautions for use]
When voltage is applied or when there is a voltage fluctuation, a charging current flows to the capacitor inside the fan, which can cause a large peak current called an inrush current to flow for a period of time ranging from a few microseconds to a few milliseconds. Customers are responsible for selecting fuses and breakers on the equipment side to deal with inrush currents, and should evaluate the product in advance using the actual equipment before use.
Supervisor: Ryuji Ueki, Group Manager, San Ace Group, Sales Department, SANYO DENKI CO., LTD.
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