ImpellerØ250 mm9.8 in
Max airflow1,751 m³/h1,031 CFM
Max static pressure290 Pa1.16 in. wg
Voltage220/230 V
Speed3,150 rpm
Input power170 W
Noise69 dB(A)

LWAE3G250SS-7MEW-03 EC Axial Fan Ø250 mm

Ø250 mm | EC | Max airflow 1,751 m³/h | Max static pressure 290 Pa | 69 dB(A)

SKU: LWAE3G250SS-7MEW-03 Categories: Axial Fans, EC Axial Fans, Impeller Ø200–250 mm

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Samples in 1–3 days
Production 15–30 days
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.

LWAE3G250SS-7MEW-03 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWAE3G250SS-7MEW-03 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

LWAE3G250SS-7MEW-03 Wiring diagram — **Wiring diagram**Lead colours and terminal assignment; TK = motor thermal contact.

Downloads for LWAE3G250SS-7MEW-03

PDFDatasheet DOCXDatasheet · 609 KB

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LWAE3G250SS-7MEW-03 is a LONGWELL EC Axial Fan from the EC Axial Fans range, impeller Ø250 mm, rated 220/230 V EC, maximum airflow 1,751 m³/h, maximum static pressure 290 Pa, noise 69 dB(A), input power 170 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	LWAE3G250SS-7MEW-03
Series	LWAE3G250
Motor type	EC
Phase	1-phase
Rated voltage	220/230 V
Voltage range	176 ~ 264 V
Frequency	50/60 Hz
Current	0.9 A
Input power	170 W
Speed	3,150 rpm
Max. airflow	1,751 m³/h
Max. airflow (CFM)	1,124 CFM
Max. static pressure	290 Pa
Noise	69 dB(A)
Ambient temperature	-25 ~ +60 ℃
Storage temperature	-25 ~ 70℃
Humidity	0 ~ 85 % RH
Altitude	< 1000m
Impeller diameter	Ø250 mm
Impeller material	Sheet steel ( Impeller )
Protection class	IP54
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 °Croom, humidity 15%~65%RH
Speed control	Control input 0~10VDC or PWM
Control signal	Control signal VSP voltage range1VDC~9.5VDC(During normal operation, when the VSP voltage is below 1.0VDC, the motor switches from operating mode to standby mode)
PWM input	PWM signal: frequency 1K–10KHz, amplitude 10–12V,duty cycle 30%–70% .
Speed feedback	Tach output: 1 Pulse/R; FG internal open circuit output, external pull-up resistor 10KΩ, pull-up voltage +10V
Auxiliary output	Output 10VDC, Max Current 10 mA
Protection functions	Over-temperature protection, Over-current protection, Locked-rotor protection’
Soft start	Delay time <20 seconds to full speed

Typical applications

Condensers, evaporators and dry coolers
Heat-pump and chiller outdoor units
Building and workshop ventilation
Cooling towers and transformer cooling

Series LWAE3G250: 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 (Ø250 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
LWAE3G250SS-7MEW-03 this model	1,751 m³/h	290 Pa	3,150 rpm	170 W	69 dB(A)	220/230 V
LWBE3G250-072PS-15	1,215 m³/h	391 Pa	2,150 rpm	90 W	68 dB(A)	230 V	View
LWDE-250 (10")U-MWN-01	1,219 m³/h	see curve	3,000 rpm	195 W	69 dB(A)	110-120 V	View
LWDE-250 (10")U-MWN-03	1,219 m³/h	see curve	3,000 rpm	195 W	62 dB(A)	110-120 V	View
LWDE-250S-MBN-07	1,231 m³/h	1,030 Pa	2,700 rpm	170 W	71 dB(A)	230 V	View
LWBE3G250-092PS-21	1,421 m³/h	556 Pa	2,600 rpm	170 W	69 dB(A)	230 V	View
LWBE3G250-072PS-17	1,421 m³/h	639 Pa	2,760 rpm	140 W	77 dB(A)	230 V	View
LWBE3G250-102PS-22	1,524 m³/h	773 Pa	3,150 rpm	240 W	78 dB(A)	230 V	View
LWBE3G250-092PS-16	1,531 m³/h	785 Pa	3,010 rpm	140 W	72.1 dB(A)	230 V	View
LWBE3G250-102PS-24	1,700 m³/h	1,082 Pa	3,500 rpm	370 W	82 dB(A)	230 V	View
LWBE3G250-092PS-20	1,730 m³/h	525 Pa	2,500 rpm	145 W	74 dB(A)	230 V	View
LWBE3G250-102PS-23	1,751 m³/h	824 Pa	3,170 rpm	270 W	84 dB(A)	230 V	View
LWDE-250 (10")S-MWN-02	2,075 m³/h	see curve	3,000 rpm	195 W	69 dB(A)	220-240 V	View
LWDE-250 (10")S-MWN-04	2,075 m³/h	see curve	3,000 rpm	195 W	62 dB(A)	220-240 V	View
LWFE3G250-102PT-08	3,708 m³/h	1,751 Pa	3,860 rpm	1,000 W	92 dB(A)	400 V	View