ImpellerØ310 mm12.2 in
Max airflow2,235 m³/h1,315 CFM
Max static pressure474 Pa1.90 in. wg
Voltage230 V
Speed1,850 rpm
Input power160 W
Noise75 dB(A)

LWBE3G310-092NS-20 EC Backward Curved Centrifugal Fan Ø310 mm

Ø310 mm | EC | Max airflow 2,235 m³/h | Max static pressure 474 Pa | 75 dB(A)

SKU: LWBE3G310-092NS-20 Categories: Backward Curved Centrifugal Fans, Centrifugal Fans, Impeller Ø250–355 mm

Factory direct
OEM / ODM
Samples in 1–3 days
Production 15–30 days
18-month warranty
CE · ETL · RoHS

View RFQ →

Get a quote · LWBE3G310-092NS-20

Price, curve check and lead time within 1 business day.

Used only for this quotation and technical support.

WhatsApp / Phone+86 183 5827 4663 E-mail an engineersales@longwellfans.com Datasheet (PDF)electrical & performance data All files for LWBE3G310-092NS-20drawings · curves · datasheet

Samples 1–3 days · fee credited to your order
From ~30 pcs for a first validation order
T/T 30 / 70 · FOB / CIF / DDP
100% tested · 18-month warranty
How ordering works →

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.

LWBE3G310-092NS-20 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWBE3G310-092NS-20 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

LWBE3G310-092NS-20 Wiring diagram — **Wiring diagram**Lead colours and terminal assignment; TK = motor thermal contact.

Downloads for LWBE3G310-092NS-20

DOCXDatasheet · 542 KB PDFDatasheet · 553 KB

Need a non-standard size or another format? Ask an engineer or search the download center.

LWBE3G310-092NS-20 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø310 mm, rated 230 V EC, maximum airflow 2,235 m³/h, maximum static pressure 474 Pa, noise 75 dB(A), input power 160 W. The EC motor integrates the drive electronics: stepless speed control by 0–10 V or PWM signal, speed feedback and high efficiency at part load.

Technical data

Model	LWBE3G310-092NS-20
Series	LWBE3G310
Motor type	EC
Phase	1-phase
Rated voltage	230 V
Frequency	50 Hz
Current	1.25 A
Input power	160 W
Speed	1,850 rpm
Max. airflow	2,235 m³/h
Max. airflow (CFM)	1,315 CFM
Max. static pressure	474 Pa
Noise	75 dB(A)
Ambient temperature	-25 ~ 60 °C
Storage temperature	-25 ~ 70℃
Humidity	0 ~ 85 % RH
Altitude	< 1000m
Impeller diameter	Ø310 mm
Rotor diameter	92
Impeller material	Aluminum Alloy( Impeller )
Protection class	IP44
Insulation class	F
Bearing	Maintenance-free deep groove ball bearings
Duty	S1
Balance grade	G6.3
Vibration standard	JB/T 8689
Service life	40,000Hours(L10), At 40 °Croom, humidity 15%~65%RH
Speed control	Control input 0~10VDC/PWM
Control signal	Control signal VSP voltage range1±0.1VDC~9.5±0.2VDC(During normal operation, when the VSP voltage is below 1.0±0.1VDC, the motor switches from operating mode to standby mode)
Speed feedback	Tach output: 4 Pulse/R; FG internal open circuit output, external pull-up resistor R, pull-up voltage V+
Auxiliary output	Output 10VDC, Max Current 10 mA
Protection functions	Current limiting protection , Over-temperature protection, Over-current protectionLocked-rotor protection’ , Input power supply lacks phase protection
Soft start	Delay time <30 seconds to full speed
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 LWBE3G310: 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.

Alternatives with the same impeller (Ø310 mm · EC)

Same impeller, different speed grade, power or wiring. Step up for more airflow, step down for lower noise.

Model	Max airflow	Max static pressure	Speed	Power	Noise	Voltage
LWBE3G310-092NS-20 this model	2,235 m³/h	474 Pa	1,850 rpm	160 W	75 dB(A)	230 V
LWBE3G310-092PS-11	2,235 m³/h	474 Pa	1,850 rpm	160 W	75 dB(A)	230 V	View
LWFE3G310-072PS-01	2,266 m³/h	700.4 Pa	1,810 rpm	175 W	66 dB(A)	230 V	View
LWBE3G310-092PS-12	2,410 m³/h	443 Pa	1,750 rpm	150 W	75 dB(A)	230 V	View
LWFE3G310-092PS-08	2,523.5 m³/h	669.5 Pa	2,050 rpm	220 W	66 dB(A)	230 V	View
LWFE3G310-092PS-07	2,678 m³/h	607.7 Pa	1,500 rpm	175 W	63 dB(A)	230 V	View
LWBE3G310-102PS-02	2,869 m³/h	630 Pa	2,150 rpm	285 W	70 dB(A)	230 V	View
LWBE3G310-102PS-16	2,884 m³/h	963 Pa	2,600 rpm	450 W	78 dB(A)	230 V	View
LWBE3G310-102PS-15	2,936 m³/h	700 Pa	2,300 rpm	370 W	76 dB(A)	230 V	View
LWFE3G310-102PS-03	4,120 m³/h	1,081.5 Pa	2,960 rpm	700 W	85 dB(A)	230 V	View
LWBE3G310-138PT-04	4,398 m³/h	824 Pa	2,600 rpm	980 W	74 dB(A)	400 V	View
LWBE3G310-138NT-05	4,398.1 m³/h	824 Pa	2,600 rpm	980 W	74 dB(A)	400 V	View
LWFE3G310-102PT-09	5,150 m³/h	1,730.4 Pa	3,000 rpm	1,100 W	85 dB(A)	400 V	View
LWBE3G310-138NT-25	5,592.9 m³/h	1,082 Pa	3,300 rpm	1,588 W	92 dB(A)	400 V	View
LWBE3G310-138PT-10	5,593 m³/h	1,082 Pa	3,300 rpm	1,588 W	92 dB(A)	400 V	View