ImpellerØ450 mm17.7 in
Max airflow7,725 m³/h4,547 CFM
Max static pressure638.6 Pa2.56 in. wg
Voltage380 V
Speed930 rpm
Input power3,500 W4.69 hp
Noise74 dB(A)

LWFA6D450-188NT-01 AC Forward Curved Centrifugal Fan Ø450 mm

Ø450 mm | AC | Max airflow 7,725 m³/h | Max static pressure 638.6 Pa | 74 dB(A)

SKU: LWFA6D450-188NT-01 Categories: Centrifugal Fans, Forward Curved Centrifugal Fans, Impeller Ø225–500 mm

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Production 15–30 days
18-month warranty
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WhatsApp / Phone+86 183 5827 4663 E-mail an engineersales@longwellfans.com All files for LWFA6D450-188NT-01drawings · curves · datasheet

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Drawings & downloads
Technical description

LWFA6D450-188NT-01 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWFA6D450-188NT-01 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

Series catalogue

PDFLWFA LWFA Series Direct Driven centrifugal blower · 1.4 MB

Covers the whole series, not only this model.

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

LWFA6D450-188NT-01 is a LONGWELL AC Forward Curved Centrifugal Fan from the Forward Curved Centrifugal Fans range, impeller Ø450 mm, rated 380 V AC, maximum airflow 7,725 m³/h, maximum static pressure 638.6 Pa, noise 74 dB(A), input power 3,500 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.

Technical data

Model	LWFA6D450-188NT-01
Series	LWFA6D450
Motor type	AC
Phase	3-phase
Rated voltage	380 V
Frequency	50 Hz
Current	5.9 A
Input power	3,500 W
Speed	930 rpm
Max. airflow	7,725 m³/h
Max. static pressure	638.6 Pa
Noise	74 dB(A)
Ambient temperature	-30 ~ 60 °C
Impeller diameter	Ø450 mm
Rotor diameter	188
Insulation class	F
Bearing	Maintenance-free ball bearings
Duty	S1

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 LWFA6D450: 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 (Ø450 mm · AC)

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
LWFA6D450-188NT-01 this model	7,725 m³/h	638.6 Pa	930 rpm	3,500 W	74 dB(A)	380 V
LWBA6D450-138NT-07	4,017 m³/h	309 Pa	920 rpm	300 W	60 dB(A)	380 V	View
LWBA6E450-138NS-05	4,017 m³/h	309 Pa	930 rpm	260 W	60 dB(A)	230 V	View
LWBA4D450-138NT-08	4,450 m³/h	381 Pa	1,050 rpm	360 W	61 dB(A)	380 V	View
LWBA6E450-138NS-06	4,450 m³/h	381 Pa	1,050 rpm	350 W	61 dB(A)	230 V	View
LWBA4E450-138NS-02	6,077 m³/h	618 Pa	1,350 rpm	800 W	76 dB(A)	230 V	View
LWBA4D450-138NT-01	6,077 m³/h	618 Pa	1,350 rpm	800 W	76 dB(A)	380 V	View
LWBA4D450-138NT-09	6,164 m³/h	630 Pa	1,395 rpm	616 W	78.8 dB(A)	380 V	View
LWBA4D450-188NT-03	6,695 m³/h	618 Pa	1,350 rpm	800 W	79 dB(A)	380 V	View
LWBA4D450-188NT-04	7,210 m³/h	695 Pa	1,400 rpm	1,100 W	82 dB(A)	380 V	View
LWFA8D450-188NT-02	7,416 m³/h	370.8 Pa	680 rpm	2,000 W	68 dB(A)	380 V	View