The fan casing made of galvanised steel is reliably protected against corrosion. The Canal-EC(-RC) casing for all sizes has a service cover for direct access to the impeller and motor during installation or maintenance.
Fan impellers with backward curved blades are carefully static and dynamically balanced. EC-motors (electronically commutated) are DC motors with external rotor, permanent magnets, with control function.
The principle of operation of an EC motor. Permanent magnets embedded in the rotor create a force field.
By controlling the direction of current in the stator winding, the magnetic field vector can be changed. An inbuilt switching controller creates maximum torque on the shaft by applying voltage to the motor phases.
The controller calculates and signals the polarity of the current to the stator winding and ensures continuous rotation of the rotor at a predetermined speed. An integrated switching module allows the EC motor to be connected post...
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