Description
The ZIEHL-ABEGG RD28S-4DW.4R.2L is an industrial-grade 400 / 460 VAC 3-phase AC Centrifugal Fan with an impeller size of 280 mm, engineered for heavy-duty double-inlet ventilation. Constructed with an unpainted aluminum scroll housing, a galvanized sheet steel double-inlet impeller, and long-life ball bearings, it has a total weight of 26 kg. Driven by a 3-phase AC external rotor motor operating across 50 / 60 Hz, it delivers input power consumptions of 1350 / 1550 / 1700 W (1.35 / 1.55 / 1.70 kW) and draws rated currents of 2.7 / 2.7 / 2.6 A across 400V D (50Hz) / 400V D (60Hz) / 460V D (60Hz) operating conditions (2.7 / 1.55 A @ 400/690V D/Y 50Hz). Operating at nominal speeds of 1290 / 1300 / 1370 RPM, it produces a static pressure (PsF) of 29.57 mmH₂O (290.0 Pa / 1.16 inAq) with power factors (cos φ) of 0.73 / 0.83 / 0.82. Engineered for continuous duty up to 70 °C ambient temperatures, it features IP10 degree of protection, Thermal Class 155 (Class F) insulation, ErP 2015 compliance (N44, N=45.7%), IEC60034-1 standard certification, UKCA and CE agency approvals, and is manufactured in Germany.
RD28S-4DW.4R.2L Fan Parameters
Manufacturer: ZIEHL-ABEGG
Model Number: RD28S-4DW.4R.2L
Part Number: 105354A
Batch Number: 33753933/042
Type: AC Centrifugal Fan (Double Inlet)
Impeller Size: 280 mm
Weight: 26 kg
Housing Material: Unpainted Aluminum
Impeller Material: Galvanized Sheet Steel
Bearing Type: Ball Bearing
Degree of Protection: IP10
Insulation Class: Class 155 (THCL155 / Class F)
Power Factor (cos φ): 0.73 / 0.83 / 0.82
Efficiency Rating: ErP 2015 (N44, N=45.7%, statA=39.2%)
Standard Compliance: IEC60034-1
Country of Origin: Made in Germany
Nominal Voltage: 400 / 460 VAC (3-Phase, D/Y)
Operating Voltage Range: 400 – 690 VAC (±10%)
Frequency: 50 / 60 Hz
Rated Current: 2.7 / 2.7 / 2.6 A (2.7 / 1.55 A @ 50Hz D/Y)
Power Consumption: 1350 / 1550 / 1700 W (1.35 / 1.55 / 1.70 kW)
Speed: 1290 / 1300 / 1370 RPM
Static Pressure (PsF): 29.57 mmH₂O (290.0 Pa / 1.16 inAq)
Max. Operating Temperature: 70 °C
Agency Approvals: CE, UKCA
Application
The ZIEHL-ABEGG RD28S-4DW.4R.2L is deployed in industrial frequency converters, VFD panels, high-power HVAC air handling units, data center cooling systems, and heavy machinery requiring high-volume double-inlet centrifugal ventilation.
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