ImpellerØ225 mm8.9 in
Max airflow3,502 m³/h2,061 CFM
Max static pressure371 Pa1.49 in. wg
Voltage230 V
Speed1,250 rpm
Input power750 W1.01 hp
Noise77 dB(A)

LWFE3G225-138DS-03 EC Dual Inlet Forward Centrifugal Blower Ø225 mm

Ø225 mm | EC | Max airflow 3,502 m³/h | Max static pressure 371 Pa | 77 dB(A)

SKU: LWFE3G225-138DS-03 Categories: Centrifugal Fans, Dual Inlet Forward Curved Blowers, Impeller Ø180–355 mm

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

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Engineering files (on request)

CAD files exist for this model and can be released for assembly checks in SolidWorks / CATIA / Creo / Inventor.

STP3D model (STEP)6.7 MBRequest →

CAD models contain the blade geometry and are not downloadable. Tell us the project; an engineer sends the file after a short check, normally within 1 business day.

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WhatsApp / Phone+86 183 5827 4663 E-mail an engineersales@longwellfans.com Datasheet (PDF)electrical & performance data All files for LWFE3G225-138DS-03drawings · curves · datasheet

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From ~30 pcs for a first validation order
T/T 30 / 70 · FOB / CIF / DDP
100% tested · 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.

LWFE3G225-138DS-03 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWFE3G225-138DS-03 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

LWFE3G225-138DS-03 Wiring diagram — **Wiring diagram**Lead colours and terminal assignment; TK = motor thermal contact.

Downloads for LWFE3G225-138DS-03

PDFDatasheet

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

LWFE3G225-138DS-03 is a LONGWELL EC Dual Inlet Forward Centrifugal Blower from the Dual Inlet Forward Curved Blowers range, impeller Ø225 mm, rated 230 V EC, maximum airflow 3,502 m³/h, maximum static pressure 371 Pa, noise 77 dB(A), input power 750 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	LWFE3G225-138DS-03
Series	LWFE3G225
Motor type	EC
Phase	1-phase
Rated voltage	230 V
Frequency	50 Hz
Current	3.5 A
Input power	750 W
Speed	1,250 rpm
Max. airflow	3,502 m³/h
Max. airflow (CFM)	2,061 CFM
Max. static pressure	371 Pa
Noise	77 dB(A)
Ambient temperature	-30 ~ 60 °C
Storage temperature	-25 ~ 70℃
Humidity	0 ~ 85% RH
Altitude	< 1000m
Impeller diameter	Ø225 mm
Rotor diameter	138
Impeller material	Galvanised sheet steel (Impeller)
Protection class	IP44
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 40℃room, humidity 15%~65%RH

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 LWFE3G225: 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 (Ø225 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
LWFE3G225-138DS-03 this model	3,502 m³/h	371 Pa	1,250 rpm	750 W	77 dB(A)	230 V
LWFE3G225-072PS-01	1,009.4 m³/h	618 Pa	2,300 rpm	85 W	65 dB(A)	230 V	View
LWBE3G225-072PS-11	1,112 m³/h	433 Pa	2,500 rpm	80 W	69 dB(A)	230 V	View
LWBE3G225-072NS-10	1,112 m³/h	433 Pa	2,500 rpm	80 W	69 dB(A)	230 V	View
LWFE3G225-072PS-02	1,184.5 m³/h	669.5 Pa	2,600 rpm	115 W	67 dB(A)	230 V	View
LWFE3G225-072PS-03	1,313.25 m³/h	1,030 Pa	3,100 rpm	170 W	70 dB(A)	230 V	View
LWFE3G225-092PS-04	1,359.6 m³/h	906.4 Pa	3,600 rpm	230 W	71 dB(A)	230 V	View
LWBE3G225-092NS-10	1,359.6 m³/h	906.4 Pa	3,600 rpm	230 W	71 dB(A)	230 V	View
LWBE3G225-092NU-17	1,359.6 m³/h	906.4 Pa	3,600 rpm	230 W	71 dB(A)	115 V	View
LWBE3G225-092PS-12	1,528 m³/h	683 Pa	3,060 rpm	170 W	71.1 dB(A)	230 V	View
LWBE3G225-092NS-11	1,528 m³/h	683 Pa	3,060 rpm	170 W	71 dB(A)	230 V	View
LWBE3G225-092PS-13	1,545 m³/h	731 Pa	3,000 rpm	160 W	71 dB(A)	230 V	View
LWBE3G225-092NS-12	1,545 m³/h	731 Pa	3,000 rpm	160 W	71 dB(A)	230 V	View
LWBE3G225-092PS-07	1,630 m³/h	839 Pa	3,500 rpm	315 W	71 dB(A)	230 V	View
LWBE3G225-092NS-13	1,630 m³/h	839 Pa	3,500 rpm	315 W	71 dB(A)	230 V	View