SDA450 4 1EC Raptor Case Mounted Axial Fan Single Phase EC 450mm

The Elta SDA450/4-1EC is a 450mm Raptor SDA short cased axial fan for fitting in 450mm ductwork. It moves up to 4903 m³/h in free air, 4392 m³/h at 50 Pa and still 3269 m³/h at 100 Pa, the highest pressure in Elta's published table for this model.A single phase EC external rotor motor (200-277V 50/60Hz) with an integrated variable speed drive runs at up to 1303 rpm and draws 284 W at best efficiency (1.38 A peak), with internal electronic overload protection. Speed is set by a 0-10V signal or Elta's 149-POT-10-MI potentiometer. The Ziehl-Abegg FE2owlet aerofoil impeller has serrated trailing edges and winglets for lower noise, the mild steel case is powder coated in RAL 7045 with an IP55 terminal box, the motor is IP54, and Elta give a 12 month warranty. 1 Phase EC Motor Up to 4903 m³/h Speed Controllable What it is best used forDucted extract or supply on 450mm duct for sports halls, school kitchens, retail units, workshops and factory areas. At 50 Pa it moves 4392 m³/h, roughly 6 air changes an hour in a space of about 730 m³.Above 100 Pa Elta publish no figures, so for long duct runs with filters, heater batteries or attenuators an inline mixed flow or centrifugal box fan is the safer choice. It is not suitable for corrosive or explosive atmospheres, and the air must stay between -20°C and +70°C.Why choose this over alternativesThere are 4 Raptor SDA models in the 450mm case, and the choice comes down to supply, noise and control. This EC version gives fully variable speed from a 0-10V signal with no separate controller needed for BMS control, and at 41.0% overall efficiency it is more efficient than the AC equivalent (34.0% for the SDA450/4-1AC). In the same size there is also the Elta SDA450/4-1AC (4 pole single phase, 6674 m³/h, 50 dB(A)), the Elta SDA450/6-1AC (6 pole single phase, 4536 m³/h, 42 dB(A)) and the Elta SDA450/46-3AC (two speed three phase, 7182 m³/h, 50 dB(A)).If you need more air, the Elta SDA500/4-1EC moves 8582 m³/h in free air. For a smaller duct the Elta SDA400/4-1EC gives 5076 m³/h. If the fan will sit in a wall or panel rather than in a duct, the Elta SPA450/4-1EC plate fan uses the same Raptor impeller and motor family on a square mounting plate.Installation notes Fit it in the duct run at any angle, securely supported, with access for maintenance. The case is 255mm long with 12 holes of 10mm on a 487mm PCD at each end for Elta matching flanges 061A-0450-C, and mounting feet 060A-0450-C are available. Wire to Elta diagram 152-00044 through the fitted terminal box (21mm cable entry). For variable speed connect a 0-10V signal or the 149-POT-10-MI potentiometer to the 10V, E1 and GND terminals. Disconnect the fan before any insulation resistance testing. Elta warn this can damage the EC electronics and is not covered by warranty. Fit a local means of isolation, and site the discharge so exhaust cannot be drawn back into a room through the open flue of a gas or fuel burning appliance. At first start check rotation, airflow direction and that the running current is within the rating plate. Inspect and clean the blades and guards at least every 12 months. You'll also need Elta EC electronic controller 149-POT-10-MI (the potentiometer controller Elta list for every EC Raptor SDA) Elta ancillary pack APK450SCD/001 (flexible connections, matching flanges, anti-vibration mounts and mounting feet) available to order, ask us Browse more cased axial fans, axial fans or Elta fans, or call us for help choosing the right fan.Specifications Model SDA450/4-1EC Type Cased axial fan, short case Diameter 450mm Max airflow 4903 m³/h Static pressure 100 Pa Motor Single phase EC, 200-277V 50/60Hz, 1303 rpm Power 284 W (1.38 A peak) Noise 56 dB(A) at 3m IP rating IP54 motor, IP55 terminal box Warranty 1 Year Manufacturer Airflow at 50 Pa 4392 m³/h Airflow at 5V control signal 2304 m³/h, 41 dB(A) at 3m Speed control Integrated variable speed drive, 0-10V or potentiometer Overall efficiency 41.0% at best efficiency point FMEG 51 Case 255mm long, 450mm internal diameter, 521mm flange diameter Flange fixings 12 holes 10mm on 487mm PCD Impeller Ziehl-Abegg FE2owlet aerofoil with serrated trailing edges Finish Powder coated mild steel, RAL 7045 Operating temperature -20°C to +70°C, up to 95% RH Weight 14 kg Wiring diagram 152-00044 Manuals & Guides Elta Raptor SDA Datasheet Elta Raptor SDA Installation Manual