ImpellerØ400 mm15.7 in
Max airflow9,682 m³/h5,695 CFM
Max static pressure1,627 Pa6.53 in. wg
Voltage400 V
Speed2,650 rpm
Input power2,060 W2.76 hp
Noise84 dB(A)

LWBE3G400-188NT-17 EC Backward Curved Centrifugal Fan Ø400 mm

Ø400 mm | EC | Max airflow 9,682 m³/h | Max static pressure 1,627 Pa | 84 dB(A)

SKU: LWBE3G400-188NT-17 Categories: Backward Curved Centrifugal Fans, Centrifugal Fans, Impeller Ø400–560 mm

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Samples in 1–3 days
Production 15–30 days
18-month warranty
CE · RoHS · ETL on request

Engineering files (on request)

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

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 LWBE3G400-188NT-17drawings · curves · datasheet

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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.

LWBE3G400-188NT-17 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWBE3G400-188NT-17 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

LWBE3G400-188NT-17 Wiring diagram — **Wiring diagram**Lead colours and terminal assignment; TK = motor thermal contact.

Downloads for LWBE3G400-188NT-17

DOCXDatasheet · 651 KB PDFDatasheet · 717 KB

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

LWBE3G400-188NT-17 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø400 mm, rated 400 V EC, maximum airflow 9,682 m³/h, maximum static pressure 1,627 Pa, noise 84 dB(A), input power 2,060 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	LWBE3G400-188NT-17
Series	LWBE3G400
Motor type	EC
Phase	3-phase
Rated voltage	400 V
Frequency	50 Hz
Current	4.2 A
Input power	2,060 W
Speed	2,650 rpm
Max. airflow	9,682 m³/h
Max. airflow (CFM)	5,695 CFM
Max. static pressure	1,627 Pa
Noise	84 dB(A)
Ambient temperature	-25 ~ 60 °C
Storage temperature	-25 ~ 70℃
Humidity	0 ~ 85% RH
Altitude	< 1000m
Impeller diameter	Ø400 mm
Rotor diameter	188
Impeller material	Aluminum Alloy (Impeller)
Protection class	IP54
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℃room, humidity 15%~65%RH
Speed control	Control input 0~10VDC/PWM/RS485
Control signal	Control signal VSP voltage range 1.5±0.1VDC~9.5±0.2VDC(During normal operation, when the VSP voltage is below 0.9±0.1VDC, the motor switches from operating mode to standby mode)
Speed feedback	Tach output: 15 Pulse/R; FG internal open circuit output, external pull-up resistor 10K, pull-up voltage V+
Auxiliary output	Output 10±0.3VDC, Max Current: 22mA
Communication	LWRS485-03
Protection functions	Current limiting protection, Over-temperature protection, Over-current protectionLocked-rotor protection, Input power supply lacks phase protection
Soft start	Delay time <35 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 LWBE3G400: 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 (Ø400 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
LWBE3G400-188NT-17 this model	9,682 m³/h	1,627 Pa	2,650 rpm	2,060 W	84 dB(A)	400 V
LWBE3G400-102PS-11	3,554 m³/h	546 Pa	1,460 rpm	300 W	76 dB(A)	230 V	View
LWBE3G400-102NS-16	3,554 m³/h	546 Pa	1,460 rpm	300 W	76 dB(A)	230 V	View
LWBE3G400-102PS-01	3,914 m³/h	556 Pa	1,430 rpm	330 W	70 dB(A)	230 V	View
LWBE3G400-102NS-02	3,914 m³/h	556.2 Pa	1,430 rpm	330 W	70 dB(A)	230 V	View
LWBE3G400-102PS-09	4,463 m³/h	420 Pa	1,250 rpm	297 W	—	230 V	View
LWBE3G400-102NS-14	4,463 m³/h	420 Pa	1,250 rpm	297 W	62 dB(A)	230 V	View
LWBE3G400-102NS-15	5,476 m³/h	600 Pa	1,520 rpm	500 W	68 dB(A)	230 V	View
LWBE3G400-102PS-10	5,615 m³/h	622 Pa	1,520 rpm	500 W	—	230 V	View
LWFE3G400-102PS-02	6,489 m³/h	978.5 Pa	1,800 rpm	700 W	85 dB(A)	230 V	View
LWBE3G400-102NS-11	6,489 m³/h	978.5 Pa	1,800 rpm	700 W	85 dB(A)	230 V	View
LWBE3G400-138PT-04	7,459 m³/h	840 Pa	2,060 rpm	1,100 W	77 dB(A)	400 V	View
LWBE3G400-138NT-12	7,459 m³/h	840 Pa	1,100 rpm	1,480 W	71 dB(A)	400 V	View
LWBE3G400-188PT-07	9,682 m³/h	1,627 Pa	2,650 rpm	2,060 W	84 dB(A)	400 V	View