ImpellerØ500 mm19.7 in
Max airflow8,137 m³/h4,789 CFM
Max static pressure464 Pa1.86 in. wg
Voltage400 V
Speed1,100 rpm
Input power870 W1.17 hp
Noise71 dB(A)

LWBE3G500-138NT-13 EC Backward Curved Centrifugal Fan Ø500 mm

Ø500 mm | EC | Max airflow 8,137 m³/h | Max static pressure 464 Pa | 71 dB(A)

SKU: LWBE3G500-138NT-13 Categories: Backward Curved Centrifugal Fans, Centrifugal Fans, Impeller Ø400–560 mm

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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.

LWBE3G500-138NT-13 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWBE3G500-138NT-13 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

Downloads for LWBE3G500-138NT-13

DOCXDatasheet · 518 KB

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LWBE3G500-138NT-13 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø500 mm, rated 400 V EC, maximum airflow 8,137 m³/h, maximum static pressure 464 Pa, noise 71 dB(A), input power 870 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	LWBE3G500-138NT-13
Series	LWBE3G500
Motor type	EC
Phase	3-phase
Rated voltage	400 V
Frequency	50 Hz
Current	1.46 A
Input power	870 W
Speed	1,100 rpm
Max. airflow	8,137 m³/h
Max. airflow (CFM)	4,786 CFM
Max. static pressure	464 Pa
Noise	71 dB(A)
Ambient temperature	-25 ~ 60 °C
Altitude	< 1000m
Impeller diameter	Ø500 mm
Rotor diameter	138
Impeller material	Aluminum Alloy
Protection class	IP54
Insulation class	F
Bearing	Maintenance-free ball bearings
Duty	S1
Balance grade	According to JB/T 9101-1999 requirements G6.3
Vibration standard	Test method accord with JB/T 8689
Service life	40,000Hours(L10). At 40℃ room, humidity 15%~65%RH
Speed control	Control input 0~10VDC / PWM (RS485 external control box can be connected)
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)
PWM input	PWM signal: frequency 1K–10KHz, amplitude 10–12V,duty cycle 30%–70% .
Speed feedback	Tach output: 12Pulse/R; FG internal open circuit output, external pull-up resistor 10KΩ, pull-up voltage +10V
Auxiliary output	Output 10±0.3VDC, Max Current: 10mA
Communication	LWRS485-01
Protection functions	Over-temperature protection, Over-current protection, Locked-rotor 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 LWBE3G500: 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 (Ø500 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
LWBE3G500-138NT-13 this model	8,137 m³/h	464 Pa	1,100 rpm	870 W	71 dB(A)	400 V
LWAE3G500SS-5PKW-15	5,900 m³/h	see curve	900 rpm	200 W	56 dB(A)	230 V	View
LWBE3G500-138PT-08	8,137 m³/h	464 Pa	1,100 rpm	870 W	71 dB(A)	400 V	View
LWBE3G500-188PT-07	10,305 m³/h	903 Pa	1,705 rpm	1,900 W	—	400 V	View
LWBE3G500-188NT-14	10,305 m³/h	903 Pa	1,705 rpm	1,900 W	72 dB(A)	400 V	View
LWAE3G500TT-5MNW-02	10,506 m³/h	330 Pa	1,690 rpm	850 W	78 dB(A)	380 V	View
LWAE3G500TT-5MKW-06	10,506 m³/h	330 Pa	1,690 rpm	850 W	78 dB(A)	380 V	View
LWAE3G500TT-5MEW-04	10,506 m³/h	330 Pa	1,690 rpm	850 W	78 dB(A)	380 V	View
LWAE3G500TS-5MNW-01	10,506 m³/h	330 Pa	1,690 rpm	850 W	78 dB(A)	380 V	View
LWBE3G500-188PT-02	12,243 m³/h	1,265 Pa	2,000 rpm	3,160 W	—	400 V	View
LWBE3G500-188NT-09	12,243 m³/h	1,265 Pa	2,000 rpm	3,160 W	78 dB(A)	400 V	View
LWBE3G500-188PT-05	13,472 m³/h	1,541 Pa	2,200 rpm	4,200 W	88 dB(A)	400 V	View
LWBE3G500-188NT-10	13,472 m³/h	1,541 Pa	2,200 rpm	4,200 W	66 dB(A)	400 V	View
LWBE3G500-188PT-04	14,214 m³/h	886 Pa	1,800 rpm	3,000 W	89 dB(A)	400 V	View
LWBE3G500-188NT-08	14,214 m³/h	886 Pa	1,800 rpm	3,000 W	89 dB(A)	400 V	View