DC axial fan 638 /2HPU ebm-papst St. Georgen GmbH & Co. KG Hermann-Papst-Straße 1 D-78112 St. Georgen Phone +49 7724 81-0 Fax +49 7724 81-1309 [email protected] www.ebmpapst.com Nominal data Type 638 /2HPU Nominal voltage VDC 48 Nominal voltage range VDC 40 .. 60 Speed min-1 6400 Power input W 1.8 Min. ambient temperature °C -20 Max. ambient temperature °C 70 Air flow m3/h 44 Sound power level B 5.4 Sound pressure level dB(A) 35 ml = max. load · me = max. efficiency · rfa = running at free air · cs = customer specs · cu = customer unit Subject to alterations Web data sheet D · Page 1 of 4 ebm-papst St. Georgen GmbH & Co. KG · Hermann-Papst-Straße 1 · D-78112 St. Georgen · Phone +49 7724 81-0 · Fax +49 7724 81-1309 · [email protected] · www.ebmpapst.com DC axial fan 638 /2HPU Technical features General description Particular design features: Rigid compression curve for high air flow at high counterpressure. Motor has very low structure-borne noise. Control inputs and alarm and speed signals available on request. Developed for applications with stringent environmental requirements. General features: Material: fibreglass-reinforced plastic. Impeller PA, housing PBT. Electronic commutation completely integrated. Protected against reverse polarity and locking. Connection via single strands AWG 22, TR 64, bared and tin-plated. Air exhaust over bars. Rotational direction clockwise looking at rotor. Mass: 70 g. Mass 0.07 kg Dimensions 60 x 60 x 25 mm Lifetime L10 at 40 °C 85000 h Lifetime L10 at maximum temperature 42500 h Web data sheet D · Page 2 of 4 ebm-papst St. Georgen GmbH & Co. KG · Hermann-Papst-Straße 1 · D-78112 St. Georgen · Phone +49 7724 81-0 · Fax +49 7724 81-1309 · [email protected] · www.ebmpapst.com 638 /2HPU DC axial fan Product drawing Web data sheet D · Page 3 of 4 ebm-papst St. Georgen GmbH & Co. KG · Hermann-Papst-Straße 1 · D-78112 St. Georgen · Phone +49 7724 81-0 · Fax +49 7724 81-1309 · [email protected] · www.ebmpapst.com DC axial fan 638 /2HPU 90 80 2 [in H O] 2 0,4 100 0,35 110 0,3 [Pa] Charts 40 30 0,2 0,15 50 0,1 60 0,25 70 10 0,05 20 0 5 5 10 10 15 15 20 25 20 30 35 25 40 [CFM] [m3/h] Web data sheet D · Page 4 of 4 ebm-papst St. Georgen GmbH & Co. KG · Hermann-Papst-Straße 1 · D-78112 St. Georgen · Phone +49 7724 81-0 · Fax +49 7724 81-1309 · [email protected] · www.ebmpapst.com