4 Inch Centrifugal Fan DC Blower Fan 100*25mm 12V 24V 48V

Item

Specification

Test Condition

1

 Rated Voltage

 12V ±10%

 DC power supply

2

 Rated Current

 1.00Amp (Typical)

 DC power supply at Rated Voltage

4

 Rated Power

12W

At Rated Voltage.

5

 Starting Voltage

15V (Max.)

DC power supply

7

 Speed

4800RPM  ±5%

Measured at 5 minutes

after starting under 25±5℃, 65±5%RH ambient

8

 Acoustical Noise

59dB(A)(measurement tolerance ± 5 dBA)

Measured at typical speed with an acoustic microphone 1 meter away from the fan intake in a test chamber with  background noise level  below 18dB(A)

9

 Static Pressure

25.27mm-H₂O

Refer to PERFORMANCE CHART ITEM 9 at zero airflow.

10

 Air Flow

46.43CFM

Refer to PERFORMANCE CHART ITEM 9 at zero static Pressure.

11

Direction of rotation

Counter-anticlockwise

DC power supply, viewed from impeller.

12

Noise test

 25dB-A

Bearing

√ (Dual Ball Bearing) 

◊

(Sleeve Bearing)

Frame

√

PBT of UL94V-0.

◊

Die-cast Aluminum Alloy

Impeller

√

PBT of UL94V-0.

◊

Steel

Bobbin

PBT of UL94V-0.

Lead Wire

√

Red(+)

√

Black(-)

◊

Blue(PWM)

UL 1571   28#

◊

Yellow(FG)

◊

White(RD)

2 wires  100±10mm

Connector

No

Tube

No

ITEM

Specification. Condition

Locked Rotor Protection

◊

Safety Condition

 
√

Auto power off after locked at rated voltage for 1sec
After auto power off ,circuit attempt restart in 2 to 6sec

Polarity Protection

√

Open circuit when Vcc&GND are exchanged

◊

Circuit won’t be burned within 5 seconds when Vcc &GND are exchanged

Insulation Resistance

10MΩ Between unshielded wire and frame at 500VDC/min

Dielectric Strength

5mA Max/ Measured b/w lead wire(+)and frame at 500VAC/min

Special Function

◊

Soft Start
5s (0 to Max speed)

◊

Current Limiter