DRAD & DRAG EC Forward Curved Centrifugal Fans
Available in Two Sizes; 250mm and 280mm
The DRAD and DRAG series of EC forward curved centrifugal fans are made of galvanised sheet steel. They feature external rotor motors with high rotor resistance. DRAD & DRAG models are versatile and energy efficient. They can provide airflows up to 15,000 m³/h.
Get in touch for a quote or to discuss your fan requirements. We can select the correct fan for your application. We aim to enhance your system efficiency and performance.
Available With Impeller Sizes 180mm – 400mm
DRAD and DRAG double inlet fans are available with forward curved impellers from size 180mm to 400mm. Impellers are made from galvanised sheet steel and mounted directly to the rotor of the external rotor motor. They are dynamically balanced on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11.
DRAD: Double-sided inlet design, three phase
DRAG: Double-sided inlet design, EC motor
•Air handling units
•Compressors
•Industrial buildings
•Renewable energy sources (e.g. wind turbines)
Technical Data
DRAD and DRAG models are paired with an EC asynchronous external rotor motor with an IP54 Protection class and a thermal class F. The motor adjusts its operation according to the respective loads and this changes the speed dependent on the total pressure. This is particularly advantageous in systems where resistances vary during operation.
| Fan Type | Voltage (V) |
Frequency (Hz) |
Input Power (kW) |
Rated Current (A) |
Speed (rpm) |
Max Temp (°C) |
IP Rating (IP) |
|---|---|---|---|---|---|---|---|
| GKHM 355-CIG.102.5HF IE Gen3 (IE5) | 3~ 380-480 | 50 / 60 | 2.33 | 3.7 at 400V | 3120 | 40 | IP54 |
| GKHM 400-CIG.114.6FF IE Gen3 (IE5) | 3~ 380-480 | 50 / 60 | 4.48 | 7 at 400V | 3170 | 40 | IP54 |
| GKHM 450-CIG.128.6IF IE Gen3 (IE4) | 3~ 380-480 | 50 / 60 | 5.9 | 9.05 at 400V | 2950 | 40 | IP54 |
| GKHM 500-CIG.143.6NA IE Gen3+ (IE4) | 3~ 380-480 | 50 / 60 | 7.48 | 11.4 at 400V | 2625 | 40 | IP54 |
| GKHM 560-CIG.160.6NA IE Gen3+ (IE4) | 3~ 380-480 | 50 / 60 | 6.85 | 10.7 at 400V | 2125 | 40 | IP54 |
| GKHM 630-CIG.180.6NA IE Gen3+ (IE4) | 3~ 380-480 | 50 / 60 | 5.1 | 7.88 at 400V | 1580 | 40 | IP54 |