Representative image of the series — dimensions and configuration of this model are given in the drawing and data table below.
- ImpellerØ146 mm5.7 in
- Max airflow1,009 m³/h594 CFM
- Max static pressure670 Pa2.69 in. wg
- Voltage230 V
- Speed1,450 rpm
- Input power115 W
- Noise61 dB(A)
LWFE3G146-092DS-03 EC Dual Inlet Forward Centrifugal Blower Ø146 mm
Ø146 mm | EC | Max airflow 1,009 m³/h | Max static pressure 670 Pa | 61 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 D2E146 — side-by-side comparison on longwellfans.com. Mounting is confirmed against the LONGWELL drawing before ordering.
Performance curve (P-Q) LWFE3G146-092DS-03
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 230 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.
Video LWFE3G146-092DS-03
LONGWELL 146mm EC Dual Inlet Centrifugal Blower Fan | LWFE3G146 · open in video library
Intelligent Wind Power, High Efficiency—Longwell EC Forward-Curved Centrifugal Fan | LWFE3G146-092DS-09 · open in video library
Drawing, Curve & Wiring LWFE3G146-092DS-03
Files for LWFE3G146-092DS-03: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.
Technical description LWFE3G146-092DS-03
LWFE3G146-092DS-03 is a LONGWELL EC Dual Inlet Forward Centrifugal Blower from the Dual Inlet Forward Curved Blowers range, impeller Ø146 mm, rated 230 V EC, maximum airflow 1,009 m³/h, maximum static pressure 670 Pa, noise 61 dB(A), input power 115 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 | LWFE3G146-092DS-03 |
|---|---|
| Series | LWFE3G146 |
| Motor type | EC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 0.8 A |
| Input power | 115 W |
| Speed | 1,450 rpm |
| Max. airflow | 1,009 m³/h |
| Max. static pressure | 670 Pa |
| Noise | 61 dB(A) |
| Ambient temperature | -30 ~ 60 °C |
| Storage temperature | -40 ~ 75℃ |
| Humidity | 5 ~ 95 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø146 mm |
| Rotor diameter | 92 mm |
| Impeller material | Galvanized steel sheet ( Impeller ) |
| Insulation class | F |
| Bearing | Maintenance-free deep groove ball bearings |
| Duty | S1 |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 50,000Hours(L10), At 40 °Croom, humidity 15%~65%RH |
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 LWFE3G146: 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 certificateETLIntertek Authorization to Mark, control no. 5022563; the covered model ranges are stated on the document.
PDFETL Authorization to Mark · report 220400508HAN-001 · LWBE3G / LWDE3G / LWFE3GNeed a Declaration of Conformity for this model and your destination market? Ask us — we arrange additional certification on request.
How to order LWFE3G146-092DS-03
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 (Ø146 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 | |
|---|---|---|---|---|---|---|---|
| LWFE3G146-092DS-03 this model | 1,009 m³/h | 670 Pa | 1,450 rpm | 115 W | 61 dB(A) | 230 V | |
| LWFE3G146-072DS-04 | 752 m³/h | 567 Pa | 2,400 rpm | 115 W | 66 dB(A) | 230 V | View |
| LWFE3G146-092DS-02 | 855 m³/h | 536 Pa | 1,300 rpm | 80 W | 59 dB(A) | 230 V | View |
| LWFE3G146-072DS-01 | 989 m³/h | 474 Pa | 1,350 rpm | 120 W | 72 dB(A) | 230 V | View |
| LWFE3G146-092DS-05 | 1,133 m³/h | 876 Pa | 3,200 rpm | 220 W | 74 dB(A) | 230 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 LWFE3G146 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWFA2E150-092SS-02Ø150 mm · 494 m³/h · 639 Pa · ACadjacent size
LWFE3G150-092SS-01Ø150 mm · 577 m³/h · 412 Pa · ECadjacent size
LWFA2E150-092NS-02Ø150 mm · 500 m³/h · 649 Pa · ACadjacent size
LWFA2E150-092SS-01Ø150 mm · 546 m³/h · 464 Pa · ACadjacent size
LWFD3G150-092SZ-01Ø150 mm · 597 m³/h · 773 Pa · DCadjacent size
LWFA2E150-092NS-01Ø150 mm · 551 m³/h · 464 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWAA2D200S-7MEB-06Ø200 mm · 1,009 m³/h · ACsimilar duty
LWAA2D200S-7MNW-02Ø200 mm · 1,009 m³/h · ACsimilar duty
LWAA2E200S-7MEB-04Ø200 mm · 1,009 m³/h · ACsimilar duty
LWAA2E200S-7MKW-08Ø200 mm · 1,009 m³/h · ACsimilar duty
LWAE3G200SS-7PKW-14Ø200 mm · 1,009 m³/h · 279 Pa · ECsimilar duty
LWAE3G200SS-7PNW-13Ø200 mm · 1,009 m³/h · 279 Pa · ECsimilar dutySee all 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
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- Data center coolingCRAH, FanGrid, server rooms