RadiCal and AC fans K3G280, R3G280, R2E280, R4E280 impellers 133 - 630 mm, made  of high-tech composite material with efficient GreenTech EC motors that  allows you to create high fan speed at high pressure.
Fans have  impellers with backward curved blades for working without housing, which  gives - optimal flow with low air loss through the impeller.
The new  engine in GreenTech EC technology with integrated control electronics  designed for installation in a variety of sizes - from 190-250 mm the  same mounting dimensions as the wheels with an induction motor, EC fan  but reaches much higher air performance than an identical version of AC.
New  features for use in ventilation and air-conditioning, AC models can be  replaced with GreenTech EC without increasing the cost of the equipment,  but at the same time to achieve high productivity, reduced noise and  lower power consumption.

2. When selecting a fan for a specific application, these parameters play an important role:

• Air flow with given back pressure
• Voltage supply, divided into DC and AC voltage (1~, 3~)
• Noise generation
• Efficiency
• Available mounting space

Checklist

• Part designation / type
• Quantity needed
• Field of application
• Ambient conditions (humidity, temperature, climate)
• Impeller diameter
• Air flow
• Back pressure
• Voltage supply

axial-fan_ac_hyblade_500-910_en_07-2010.pdf

Ebmpapst K3G280 RadiPac

Ebmpapst R3G280 RadiPac

6. Decoding name