Description
The ZIEHL-ABEGG RH28C-2DD.3I.CR is a high-capacity 3-phase AC Centrifugal Fan with a 280 mm impeller, specifically engineered for intensive thermal management in industrial frequency converters and power conversion equipment. Driven by a high-torque external rotor motor (MK092) with THCL 155 (Class F) insulation and IP54 protection, this unit features flexible power ratings up to 1.10 kW at 460 V (60 Hz). Operating at a peak rated speed of 3270 RPM, it features a high-performance ZAmid backward-curved impeller meticulously balanced to G 2.5 standards, ensuring a static efficiency of 50.6 %. This 10.10 kg German-engineered unit includes a 65 cm high-quality Li7Y2G-J cable and is UL-recognized, providing maximum reliability and mechanical stability for mission-critical industrial applications at the end.
RH28C-2DD.3I.CR Fan Parameters
Model Number: RH28C-2DD.3I.CR
Manufacturer: ZIEHL-ABEGG (Made in Germany)
Type: 3-Phase AC Centrifugal Fan (Backward-curved)
Designation: Single inlet impeller with backward curved blades
Impeller Size: 280.0 mm
Weight: 10.10 kg
Quality of Bearings: Ball bearing with long-time lubrication
Nominal Voltage: 3~ 400 – 500 VAC ±10% (Δ)
Phase: 3~
Frequency: 50/60 Hz
Rated Performance (50 Hz 400V): 0.66 kW | 1.25 A | 2800 RPM | cos φ 0.77 (70 °C)
Rated Performance (60 Hz 400V): 1.00 kW | 1.65 A | 3170 RPM | cos φ 0.90 (60 °C)
Rated Performance (60 Hz 460V): 1.10 kW | 1.55 A | 3270 RPM | cos φ 0.86 (60 °C)
Max. Air Flow: 1677.4 CFM (2850.0 m³/h)
Max. Static Pressure: 102.0 mmH₂O (1000.0 Pa)
Working Air Flow: 2850.0 m³/h
Static Pressure Increase: 1000.0 Pa
Efficiency Grade (ErP): Nactual = 63.1 (Ntarget = 62 / ErP 2015 compliant)
Efficiency nstatA: 50.6 %
Electrical Connection: Supply cable side, 65 cm
Cable Quality: Li7Y2G-J, 9x 0.82 mm² (AWG18)
Connection Diagram: 1360-106XA
Motor Protection: Thermal contact (Integrated)
Type of Protection: IP54
Thermal Class: Thermal class 155 (Class F)
Balancing: G 2.5
Material Impeller: ZAmid (High-performance composite)
Colour Impeller: Like RAL 5002 (Ultramarine blue)
Painting Impeller: Unpainted
Installation Position: Fitting position H / Vu / Vo
Min. Operating Temperature: -20 °C
Labelling UL/CSA: E111399 ZA-155, MK092-2DK.14.U
Certification: Motor-Recognized Component (UL)
Application
The ZIEHL-ABEGG RH28C-2DD.3I.CR 3-phase fan is the primary cooling component for heavy-duty industrial frequency converters, power conversion equipment, and modular AHU systems requiring high-efficiency airflow and durability in 400-500V power grids.
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