KRD 500/4/80/50 A
KRD 500/4/80/50 A
Rectangular-centrifugal fan with swing out motor, 3 PH impeller unit, 3-phase
Ref.-No. 08643
Features
Rectangular-centrifugal fan with backward curved impeller for direct installation in rectangular duct system. Fan with swing out motor and impeller unit. Casing made from galvanised steel and flanged on both ends, compact design, service friendly (cleaning) through swing out motor and impeller unit. Starting from size 450 additional locking of swing out motor and impeller unit. Highly efficient centrifugal impeller with backward curved blades from impact resistant polymers and galvanised steel. Dynamically balanced (Class G 6.3 to VDI 2060 and ISO 1940). Totally enclosed, 3-phase external rotor motor with thermal contacts wired to the terminal block. Speed control by use of a 5-step transformer controller or an electronic controller (stepless) as well as with a Helios frequency inverter and sinus filter on all poles Maintenance free, low-noise sealed for life ball bearings, tropical protection of windings. Mains supply via pre-assembled terminal box (IP 55).Additional data and accessories
Technical Data
General Information
| Ref.-No.: | 08643 |
|---|---|
| Type: | KRD 500/4/80/50 A |
| Flow rate free-blowing: | 8460 m³/h |
| Speed control: | TRAFO / ELECTRIC / FREQUENCY |
| RPM: | 1360 min-1 |
| Number of poles: | 4 |
| Voltage: | 230 / 400 V , 3 ph , 50 Hz |
| Rated current (FLC) uncontrolled: | 4.7 / 2.7 A |
| Max. air flow temperature (controlled): | 60 °C |
| Max. air flow temperature (uncontrolled): | 60 °C |
| IP protection category: | 54 |
| Insulation class: | F |
| Duct dimension: | 80/50 mm |
| Weight: | 64 kg |
| Wiring diagram no.: | 860 |