Extractor fan K EC SERIES

ductcommercialsteel

K 315M EC Circular duct fan made of steel, EC DN315, 230V50Hz, 1~, imp. backw. curved Centrifugal circular duct fan designed for easy and direct installation in ducts. Galvanized sheet steel housing. Circular connection spigot, length 25mm, acc. to EN1506:1997 Free-running, backward curved centrifugal impeller made of plastic. Balancing made to G 6.3, motor compl. with impeller statically and dynamically balanced in two planes acc. to DIN ISO 1940 T.1. Energy-saving, energy-efficient EC-external rotor motor, maintenance-free, the motor is placed inside the air flow for cooling. Integrated, electronic motor protection. Integrated speed controller, the fan is equipped with a potentiometer (0-10V) to set the operating point directly. The potentiometer is factory-set to a value between 6 and 10V. Silent, long-life ball bearings. Terminal box (IP55) on the casing. Air leakage class C acc. to EN 12237:2003. Installation in any mounting position. Casing made of galvanised sheet steel, corrosion class C3 is fully air tight class C according to EN1751. The fans are equipped with an external terminal box with protection class IP55. K fans use backward curved radial impellers. These are from lightweight, hard-wearing fiberglass reinforced polyamide, dynamically balanced and paired with corresponding external rotor motors. Depending on type, K fans are equipped with AC or high efficient EC external rotor motors. All motors are suitable for 50Hz and 60Hz. Fans with AC motors have integrated thermal protection with manual (electrical) reset. Size 100 and 125 has an impedance motor protection.