Centrifugal Fans - Rosenberg USA

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Performance Curves The performance curves indicate the static pressure increase Dpfa as a function of the volume flow. The performance curves refer to an air density of 0.075 kg/ft³. Fan performance curve at rated voltage 60Hz: Single phase motors: Curve A=rated voltage (115 V or 230 V ; depends on motor execution) Three phase motors: Curve A=460 V Y-connection Curve B=230 V D-connection Fan performance curve at rated voltage 50 Hz Information: Every three phase motor can be used at 460 V (Star connection) and 230 V (Delta connection). The performance curves show that the 230VD (curve B) performance is a little less than the 460VY (curve A)performance. In Delta connection the motors are also suitable for 208V 3~ power supplies. Type DRAE 181-4 DRAE 181-4 DRAE 181-4 Technical Information U [Volt] 1~115 1~230 1~230 f [Hz] Curve P 1 [kW] 60 60 50 A A B I N [A] n -1 [min ] t R [°F] t R [°C] C [μF] [%] I/I A N [kg] 0.23 2.10 960 158 70 16 - 1.1 54 01.025 10 0.23 1.05 960 158 70 4 - 1.1 54 01.025 10 0.20 0.90 1060 158 70 4 - 1.5 54 01.025 9.7 Designation Unit U Rated voltage V P1 Motor input power consumption kW IN Rated current A n Fan speed -1 min tR Max. permissible medium temperature °C / °F LW(A) A-rated sound power level dB(A) DI Current increase in component voltage % I /I Ratio of starting current to rated current - A N Information of the dimensions in inch and mm! 90 89 C 90 B DRAD 356-4 IP10 A 90 91 93 Sound power level IP protection class Wiring diagram Weight 9
10 High Efficiency Radial <strong>Fans</strong> with forward curved radial impellers Advantages: • The speed is 0-100% adjustable using auto transformers or electronic control • Easy air volume adjustments via a large range of control products based on pressure and temperature • Compact and space saving design • Easy installation in many positions • Extremely low starting currents • Motor protection by thermal contacts in motor windings
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No. 01.005 Three phase motor in Y c
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Centrifugal Fans - Rosenberg USA

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