DC axial fans 2011 [PDF] - ebm-papst

DC fansTechnical informationProduct lineOur centrifugal product line includes fans forevery application. Whether as free-runningimpellers with a diameter between 97 mm and225 mm or as assemblies in a ready-to-install,compact housing with inlet nozzle with an edgelength between 51 mm and 270 mm. Of course,all models feature high-efficiency, brushlessmotor technology.Electronic protection againstreverse polarityebm-papst DC fans have electronically commutateddrives with electronic protection againstreverse polarity.The electronics are convenientlylocated in the fan hub.Product life expectancyA distinctive feature of DC fan technology isthe convincingly high product life expectancy.Thanks to the excellent efficiency of the brushlessdrives, the thermal load of the bear ings isreduced, thus con siderably increasing the lifeexpectancy of the fans.Protection classDC fans with sleeve and ball bearings are poweredby Class E insulated motors. All ebm-papstfans conform to the requirements of ProtectionClass IP 20. Fans conforming to IP 54 and specialprotection classes are also avail able.Voltage rangeMany of our DC fans can be operated on voltagesthat are up to 50% lower and 25% higherthan their nominal voltage (see Voltage range inthe technical tables). This enables the air performanceto be adapted to the cooling requirementsand allows the noise to be reduced, evenif the fan does not have a control input.Closed-loop speed control and monitoringClosed-loop speed control and function monitoringare becoming increasingly important inmany applications. ebm-papst offers many fansin the standard design with a control input andopen collector speed signal.S-Force centrifugal – RadiCalThe new S-Force centrifugal fans provide peakperformance among fans of this type. With airflow capacity at over 1500 m³/h and a pressurebuild-up of up to 1000 pascals, the highest heatflows are manageable. In addition, the modelsare extremely efficient due to the multi-pole,electronically commutated drive motors and canbe adapted individually to every applicationthanks to intelligent motor features. Somemodels use our new, highly efficient RadiCalimpellers.76