Representative image of the series — dimensions and configuration of this model are given in the drawing and data table below.
- ImpellerØ500 mm19.7 in
- Max airflow10,305 m³/h6,062 CFM
- Max static pressure903 Pa3.63 in. wg
- Voltage400 V
- Speed1,705 rpm
- Input power1,900 W2.55 hp
- Noise72 dB(A)
LWBE3G500-188NT-14 EC Backward Curved Centrifugal Fan Ø500 mm
Ø500 mm | EC | Max airflow 10,305 m³/h | Max static pressure 903 Pa | 72 dB(A)
- Direct from LONGWELL
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 12-month warranty
- CE · ETL · RoHS
CAD models (STEP / DWG) are released on request — see “Engineering files” below. Another format or a non-standard variant? Ask an engineer · download center
Cross-reference: same impeller size class as ebm-papst K3G500, ebm-papst RadiPac 500, Ziehl-Abegg RH50C — side-by-side comparison on longwellfans.com. Mounting is confirmed against the LONGWELL drawing before ordering.
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 publicly downloadable. Tell us the project; an engineer sends the file after a short check, normally within 1 business day.
Performance curve (P-Q) LWBE3G500-188NT-14
Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade (1 here, rated 400 V). Data version: catalogue curve re-digitised 2026-09-20 (axis-calibrated, cross-checked). 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.
Drawing, Curve & Wiring LWBE3G500-188NT-14
Files for LWBE3G500-188NT-14: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.
Technical description LWBE3G500-188NT-14
LWBE3G500-188NT-14 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø500 mm, rated 400 V EC, maximum airflow 10,305 m³/h, maximum static pressure 903 Pa, noise 72 dB(A), input power 1,900 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 | LWBE3G500-188NT-14 |
|---|---|
| Series | LWBE3G500 |
| Motor type | EC |
| Phase | 3-phase |
| Rated voltage | 400 V |
| Frequency | 50 Hz |
| Current | 4 A |
| Input power | 1,900 W |
| Speed | 1,705 rpm |
| Max. airflow | 10,305 m³/h |
| Max. airflow (CFM) | 6,062 CFM |
| Max. static pressure | 903 Pa |
| Noise | 72 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Altitude | < 1000m |
| Impeller diameter | Ø500 mm |
| Rotor diameter | 188 mm |
| 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(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) |
| Speed feedback | Tach output: 15Pulse/R; FG internal open circuit output, external pull-up resistor R, pull-up voltage V+ |
| Auxiliary output | Output 10±0.3VDC, Max Current: 22mA |
| Communication | LWRS485-04 |
| 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 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.
Product-line certificates
Scans of original documents held by Ningbo Longwell Electric Technology Co., Ltd.: the company ISO management-system certificate and the certificates whose model list covers this model. Click a scan to open the original.
ISO 9001 / 14001 / 45001Management systems of Ningbo Longwell Electric Technology Co., Ltd. (company certificate).
PDFISO 9001 / 14001 / 45001 management system certificateCE-LVDVoluntary certificates of conformity issued by KTS; the covered models are listed on each certificate.
PDFCE-LVD certificate of conformity KB2206066L01 · LWBE3GRoHSVoluntary certificate of conformity issued by KTS; the covered models are listed on the certificate.
PDFRoHS certificate of conformity KB2206068R01 · LWBE3GNeed a Declaration of Conformity for this model and your destination market? Ask us — we arrange additional certification on request.
How to order LWBE3G500-188NT-14
Most first orders follow the same eight steps. Quantities, terms and lead times are confirmed in your quotation.
- 1SelectFind models by duty point in the selector or by model number, compare on the curve and add them to your RFQ list.
- 2Engineering checkWithin 1 business day you receive the duty-point check on the curve, price and lead time.
- 3SamplesStock models ship in 1–3 days.
- 4Validation supportDatasheets, drawings, wiring diagrams and DoC per model; test reports, CAD and register maps after a short project check or NDA.
- 5Order & paymentProforma invoice; first orders on T/T 30 / 70.
- 6Production & release15–30 days at the partner factory that builds your model, then inspected and released to LONGWELL standards with outgoing sampling to AQL 2.5.
- 7ShippingFOB / CIF / DDP by sea from Ningbo or Shanghai; express and air on EXW / FCA / DAP.
- 8After-sales12 months standard, extendable to 18–24 months by project agreement; test records retained for 5 years; 8D closed-loop for any issue; annual technical review for framework customers.
Test & release at LONGWELL
Specified and drawn by LONGWELL; built to LONGWELL drawings by qualified partner factories; inspected and released to LONGWELL standards before shipment.
See test and release photos (8)
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 | |
|---|---|---|---|---|---|---|---|
| LWBE3G500-188NT-14 this model | 10,305 m³/h | 903 Pa | 1,705 rpm | 1,900 W | 72 dB(A) | 400 V | |
| LWBE3G500-138PT-08 | 8,137 m³/h | 464 Pa | 1,100 rpm | 870 W | 71 dB(A) | 400 V | View |
| LWBE3G500-138NT-13 | 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 |
| LWBE3G500-188PT-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 |
Not sure which one? Send us the duty point (airflow / static pressure / noise limit) — use the selector or ask an engineer.
Other models in the LWBE3G500 seriesSame impeller, different speed grade or wiring
LWBE3G500-138NT-13Ø500 mm · 8,137 m³/h · 464 Pa · ECsame series
LWBE3G500-188NT-09Ø500 mm · 12,243 m³/h · 1,265 Pa · ECsame series
LWBE3G500-188NT-08Ø500 mm · 14,214 m³/h · 886 Pa · ECsame series
LWBE3G500-188NT-10Ø500 mm · 13,472 m³/h · 1,541 Pa · ECsame series
LWBE3G500-138PT-08Ø500 mm · 8,137 m³/h · 464 Pa · ECsame series
LWBE3G500-188PT-02Ø500 mm · 12,243 m³/h · 1,265 Pa · ECsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWFE3G450-102PT-06Ø450 mm · 8,652 m³/h · 1,390.5 Pa · ECadjacent size
LWBE3G450-102NS-21Ø450 mm · 5,050 m³/h · 417 Pa · ECadjacent size
LWBA4E450-138NS-02Ø450 mm · 6,077 m³/h · 618 Pa · ACadjacent size
LWBA4D450-138NT-01Ø450 mm · 6,077 m³/h · 618 Pa · ACadjacent size
LWBA4D450-188NT-03Ø450 mm · 6,695 m³/h · 618 Pa · ACadjacent size
LWBA6E450-138NS-05Ø450 mm · 4,017 m³/h · 309 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWBE3G500-188PT-07Ø500 mm · 10,305 m³/h · 903 Pa · ECsimilar duty
LWEA700S(T)M-071EØ700 mm · 10,200 m³/h · ACsimilar duty
LWEX-AF-7A-1.1-4P-3-00110,200 m³/h · ACsimilar duty
LWEAF700-01Ø700 mm · 10,200 m³/h · ACsimilar duty
LWAA6D600S-5MEB-05Ø600 mm · 10,197 m³/h · ACsimilar duty
LWAA6E600S-5MEB-03Ø600 mm · 10,197 m³/h · ACsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point
Go deeper on longwellfans.com
Application guides, project stories and engineering calculators for centrifugal fans — on our main site.
Solutions
- Commercial HVACAHU, rooftop, fan coil, air curtain
- FanGridsN+1 fan arrays for AHU retrofit
- Data center coolingCRAH, FanGrid, server rooms