DC Fans Model 281 Size: 60 mm x 25 mm (2.36" x 1") Part Number Bearings Voltage Voltage Range Current(mA) Input(watts) Noise(dBA) Speed(rpm) Airflow(cfm) Air Pressure (In H20) Ball 12 7.0-13.8 180 2.16 33 5000 23 0.27 281DS-2LP11-000 Ball 24 14.0-27.6 90 2.16 33 5000 23 0.27 281DH-5LP11-000 Ball 5 4.5-5.5 310 1.55 28 4250 19.4 0.19 281DH-1LP11-000 Ball 12 7.0-13.8 120 1.44 28 4250 19.4 0.19 281DH-2LP11-000 Ball 24 14.0-27.6 80 1.92 28 4250 19.4 0.19 281DM-5LP11-000 Ball 5 4.5-5.5 220 1.10 24.5 3600 16.2 0.14 281DM-1LP11-000 Ball 12 7.0-13.8 80 0.96 24.5 3600 16.2 0.14 281DM-2LP11-000 Ball 24 14.0-27.6 60 1.44 24.5 3600 16.2 0.14 281DL-5LP11-000 Ball 5 4.5-5.5 150 0.75 22.5 3100 14.1 0.10 281DL-1LP11-000 Ball 12 7.0-13.8 60 0.72 22.5 3100 14.1 0.10 281DL-2LP11-000 Ball 24 14.0-27.6 50 1.20 22.5 3100 14.1 0.10 281DS-1LP11-000 Optional frequency generator or rotation detector versions available. Consult factory. 281DL/DM Performance Curve 281DH/DS Performance Curve ETRI, Inc., 1503 Rocky River Road North * Monroe, NC 28110 * Tel. 704.289.5423 * Fax 704.283.7170 18 ETRI Model 281 DC FANS Size: 60 mm x 25 mm (2.36" x 1") ELECTRICAL SPECIFICATIONS Item Motor type Input current Input power Max air flow / Back pressure Dielectric strength Electrical connection Speed Specification DC at nominal voltage at nominal voltage All tested in submerged orifice chamber 5 mA leakage @ 500 VAC, 60 hz. UL 1007 awg 24 at nominal voltage Conditions/Tolerances brushless 10% 10% 4% cfm/8% pressure 1 minute between frame and (+) terminal 305 mm (12"), (+) red (-) black 4% MECHANICAL SPECIFICATIONS Item Life expectancy Bearing Airflow direction Housing material Mounting type Impeller Weight Rotation Specification 50,000 hours ball bearing air intake over impeller PBT plastic - 30% glass fiber flange PBT plastic - 20% glass fiber .077 kg (2.72 oz.) clockwise viewed from nameplate Conditions/Tolerances continuous operation @ 25C, 65% relative humidity top and bottom UL 94V-0 UL 94V-0 ENVIRONMENTAL SPECIFICATIONS Item Operating temperature Storage temperature Drop test Shock test Vibration test Acoustical Specification - 10 o + 70C - 40 to + 75C one drop ea. 3 faces 50 g peak acceleration x,y,z direction, 1 hour anechoic chamber at free air Conditions/Tolerances 30 cm height onto 10 mm thick wooden board duration - 11 ms frequency - 10-55-10 Hz, amplitude - 0.75 mm microphone - 1 meter away PROTECTION Item Locked rotor Polarity protected Insulation class Auto restart Agency approvals Warranty Specification impedance protected will withstand pos and neg lead reversal UL class A automatic restart by timer UL, CSA, VDE, CE 3 years PANEL CUT-OUT 1503, Rocky River Road North Monroe, NC 28110 USA Tel: 704.289.5423 Fax: 704.283.7170 Website: http://www.etrinet.com Conditions/Tolerances 72 hours @ rated voltage locked rotor condition ETRI fans are available with a wide range of accessories, from finger guards to filter assemblies to special termination. Request our accessories brochure or call your nearest distributor for complete details. ACCESSORIES 9-11, rue de Moulin des Bruyeres 92400 Courbevoie FRANCE Tel: (33-1) 49 04 92 00 Fax: (33-1) 47 89 09 38 Email: sales@etrinet.com Specifications subject to change without notice. 19