Compact fans for AC and DC [PDF] - ebm-papst

DefinitionsSubject to technical alterations.Our products are not designed for use in the aerospace industry!German and international patents, registered designs and utilitymodels.ebm-papst is a registered trademark of ebm-papst MulfingenGmbH & Co. KG.PAPST, SINTEC, VARIOFAN and Vario-Pro are registered trademarksof ebm-papst St. Georgen GmbH & Co. KG.Nominal voltage (Volts)The voltage at which the nominal values (the tabularvalues listed in this catalogue) were determined.The fan operation for DC fans is not limitedto the nominal voltage. Fan speed and fanperformance can vary according to the permissiblevoltage range that is specified on thenameplate of each fan.Frequency (Hz)ebm-papst AC fans are made for operating frequenciesof 50 Hz or 60 Hz. Their technical dataalter accordingly.Air flow (m 3 /h)The air performance of the fan in free air operation,i.e. the fan blows into the free space withoutstatic pressure build-up.Fan curvesThe fan curves are determined in accordancewith DIN 24 163 specifications on a dual-chambertest stand with intake-side measurement.This measurement technique closely approximatesthe operating conditions experienced intypical applications for fans and yields realisticperformance curves. The curves apply to an airdensity of ρ = 1.2 kg/m 3 , corresponding to anair pressure of 1013 mbar at 20 °C. Variations inPa3530252015105[in H 2 O]0,02 0,04 0,06 0,08 0,10 0,120Fan CurveOptimum OperatingRange0,4 0,8 1,2 1,6 2,0CFM1 2 3 4 m³/hair density affect pressure generation but notthe flow rate. The pressure generated at otherair densities may be estimated with the formula∆ρ2 = ∆ρ1 (ρ2 / ρ1).The nominal speed values, air flow and powerinput listed in the table were measured in freeair operation with horizontal shaft at an ambienttemperature of 20 +5 °C, air densityρ = 1.2 kg/m 3 after a warm-up period of 5 min.Optimum operating rangeDuring operation, fans are required to producean air flow with a simultaneous increase ofpressure. These operating conditions aredescribed in the section “Optimum OperatingRange”. The optimum operating range is thereforealways indicated in this catalogue in theshaded area. In this range the fans operate bestwith respect to efficiency and noise level. Withinthis optimum operating range the noise levelonly fluctuates insignificantly.Noise [dB(A), Bel(A)]1. Sound pressure level – dB(A)Noise ratings of the fan in free air operation, i.e.at maximum flow rate.2. Sound power level – Bel(A) / dB(A)Extent of the overall sound radiation of the fan.The sound power level is determined in theoptimum operating range.PAPST Sintec ® sleeve bearingsA particularly efficient bearing system withexcellent qualities:– Very precise, large sintered bearings– Low running noise– High service life expectancy– Insensitive to shock and vibrationBall bearingsPrecision ball bearings for particularly highambient temperatures and high service lifeexpectancy.Power input (Watts)Input performance of the fan motor whenoperating at nominal voltage. Depending on theoperating condition in the application, the powerinput may be higher.Temperature range (°C)The permissible ambient temperature rangewithin which the fan can be expected to runcontinuously.Service life [h]Service life L 10 at 40°C and T maxStandard figures for service life at ebm-papst.These two temperatures are based on intensive,in-house endurance tests and on the experiencemore than 60 years developing fans.Life expectancy L 10∆ (40°C)Figures oriented towards the calculation methodsemployed by other fan manufacturers. Databased on the internal expected service life at70°C, more optimistically extrapolated to 40°C.We expressly state that none of the informationor data in this catalogue is to be construedas a guarantee or warranty of properties.Unit conversionAir flow1cfm = 1,7 m 3 /h1l/s = 3,6 m 3 /h1l/min = 0,06 m 3 /hPressure1Pa = 1x10 -5 bar1 inch H 2 O = 249 Pa1 mm H 2 O = 9,81 Pa16