VKS 500×250-4-L1

Rectangular duct fans for ventilation and air conditioning systems, mounted into a system of rectangular air ducts. Used for the air supply or extract. Not suitable for polluted air, aggressive and explosive gases. Compact, with low noise level, mounted in any position, simple access to clean an impeller.Impeller with forward curved blades made of galvanized steel. Ziehl-Abegg motorized impeller. Motor: external rotor, motor protection with built-in thermal-contact, maintenance free ball bearings. Housing: made of galvanized steel.

FEATURES

• 400×200 mm to 1000×500 mm flanges;;
• Airflow up to 7200 m3/h;
• Can be mounted on floors, walls or ceilings;
• Forward-curved galvanized steel impeller;
• Cost-effective;
• Acoustically insulated (VKSA only) ;
• Power supply: 230V/50Hz/1f or 400V/50Hz/3f;

*Note: Phases of the motor (L1 – 1f, L3 – 3f)

*Note: Number of motor poles (4)

DESIGN

• Casing: galvanized sheet steel;
• Acoustic and thermal wall insulation – 50mm (VKSA only);
• Fan: centrifugal impeller and external rotor motor;
• Motor protection with built-in thermal-contact;
• Motor protection class: IP54;
• Terminal box protection class: IP55;
• From -25C up to 40/70C, depending on unit size;

SPEED CONTROL

• Voltage controlled speed controller
• Electronic voltage controller