Properties
- flow rates up to 17,000 m³/h
- size: 250 - 630 mm (impeller diameter)
- highly efficient EC technology
- backward curved impellers
- integrated control system (EC controller)
- speed is 100% infinitely variable
The Rosenberg centrifugal fans with free running, backward-curved, high-performance impellers in the GKHM / GKHS / GKHR series form a very compact, constructively optimal ventilator unit in conjunction with an electronically commutated external rotor motor (EC motor) with newly developed integrated power electronics.
In developing these centrifugal fans, compact power electronics was adapted to the proven Rosenberg EC external rotor motor (GD 150). This drive concept results in a very compact unit in which the EC controller and the EC motor no longer have to be physically installed separately from each other.
Free running impellers with EC motors are available depending on the size of different designs:
GKHM fan built-in module
GKHS fan built-in module with spider design
GKHR fan impeller with or without loose enclosed inlet cone