ImpellerØ280 mm11.0 in
Max airflow1,854 m³/h1,091 CFM
Max static pressure433 Pa1.74 in. wg
Voltage48 V
Speed2,000 rpm
Input power135 W
Noise69 dB(A)

LWBD3G280-092NH-05 DC Backward Curved Centrifugal Fan Ø280 mm

Ø280 mm | DC | Max airflow 1,854 m³/h | Max static pressure 433 Pa | 69 dB(A)

SKU: LWBD3G280-092NH-05 Categories: Backward Curved Centrifugal Fans, Centrifugal Fans, Impeller Ø250–355 mm

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18-month warranty
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Required airflow Required static pressure

Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade. The system resistance curve depends on the actual ductwork — confirm the operating point on site. Need an engineer to verify the duty point? Contact us or add the model to your RFQ and note the duty point.

LWBD3G280-092NH-05 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWBD3G280-092NH-05 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

LWBD3G280-092NH-05 Wiring diagram — **Wiring diagram**Lead colours and terminal assignment; TK = motor thermal contact.

Downloads for LWBD3G280-092NH-05

PDFDatasheet DOCXDatasheet · 651 KB

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LWBD3G280-092NH-05 is a LONGWELL DC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø280 mm, rated 48 V DC, maximum airflow 1,854 m³/h, maximum static pressure 433 Pa, noise 69 dB(A), input power 135 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.

Technical data

Model	LWBD3G280-092NH-05
Series	LWBD3G280
Motor type	DC
Rated voltage	48 V
Current	2.9 A
Input power	135 W
Speed	2,000 rpm
Max. airflow	1,854 m³/h
Max. airflow (CFM)	1,289 CFM
Max. static pressure	433 Pa
Noise	69 dB(A)
Ambient temperature	-25 ~ 80 °C
Storage temperature	-25 ~ 80℃
Humidity	5 ~ 90 % RH
Altitude	< 1000m
Impeller diameter	Ø280 mm
Rotor diameter	92
Impeller material	Galvanized Metal Sheet ( Impeller )
Protection class	IP42
Insulation class	B
Bearing	Maintenance-free deep groove ball bearings
Duty	S1
Balance grade	G6.3
Vibration standard	JB/T 8689
Service life	40,000Hours(L10), At 25 °Croom, humidity 15%~65%RH
Rotation	Clockwise,seen on rotor

Typical applications

Air handling units (AHU) and rooftop units (RTU)
Data-center CRAH / CRAC units and fan walls
Dust extraction and process ventilation
Fan filter units and air purifiers

Series LWBD3G280: models in the same series share the impeller and motor platform and differ in speed grade, voltage or lead-out / terminal-box configuration — compare them in the table below or ask for the best fit at your duty point.

Nameplate values: maximum airflow is measured at zero static pressure and maximum static pressure at zero airflow; the two never occur together. Confirm the operating point on the performance curve. Final selection is subject to the duty point (airflow / static pressure / voltage / control mode) and project verification.