1 General Characters

1.1 Rated Voltage 48 VDC

1.2 Operating Voltage 36~57 VDC

1.3 Low-Start Voltage 30VDC

1.4 Rated Speed 2750RPM

1.5 Input Current 2.2A

1.6 Input Power 105W

1.7 Air Flow 1119CFM /1900m3/H

1.8 Static Pressure 0.88inH2O / 220Pa

1.9 Acoustical Noise 69 dB(A)

1.10 Life Expectance 50,000Hours(L10) At 40℃ room, humidity 15%~65%RH.

1.11 Direction of Rotation clockwise seen on motor

1.12 Direction of Air Flow axial

1.13 Insulation Class Class B

1.14 Insulation Resistance 50 Mega Ohm minimum at 500VDC Between frame and (+) terminal

1.15 Motor Protection: Locked rotor protection; Polarity protection; Automatic restart capability

1.16 Speed Control Control input 0~10VDC / PWM

1.17 Protection Type IP44

1.18 Dielectric Strength 10mA maximum at 1000VAC 50Hz five second Between frame and (+) terminal

1.19 Signal Output FG (Frequency Generator)

2. Mechanical Characters

2.1 Dimension Ø320mm X 80mm(see dimension drawing)

2-2 Material of Impeller Steel and coated in black

2-3 Number of Blades 7

2-4 Impeller Plate No

2-5 Mounting Position Any

2-6 Surface of Rotor Coated in black

2-7 Bearing System NMB ball bearing

2-8 Lead Wire AWG20#

2-9 Weight 2450g

2-10 Package Standard

Quick Details:Place of origin: Jiangsu, China

Model no.: HA250-092D024H / HA250-092D048H

Brand Name: HEKO

Motor Type: EC brushless external rotor motor

MOQ: 1~200 pcs based on EXF price; 200pcs above based on FOB price.

Payment terms: T/T; L/C; Paypal

Approvals: CE

Type of Protection: IP44

Insulation Class: B

Speed Control: 0-10VDC/PWM

Application of 250mm 24V 48V DC high efficiency industrial axial flow fans for telecom: 

The telecom axial fans were usually used for telecom base station. Axial flow fans for telecom is usually 250mm and the axial fan efficiency can be higher than 80%. Under certain temperature conditions (18 ℃ ~28 ℃), all kinds of electronic equipment in the telecom room can run normally for a long time. According to the temperature difference between indoor and outdoor and hot and cold air exchange, ventilation system to exhaust the air by the high efficiency axial fans. Under the premise of normal operation of equipment inside room, to achieve the purpose of effectively reduce the internal temperature of the room and also saving electricity. This axial fan can be also used in other equipments where ventilation and air cool is needed.