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.
- ImpellerØ355 mm14.0 in
- Max airflow3,915 m³/h2,304 CFM
- Max static pressure770 Pa3.09 in. wg
- Voltage230 V
- Speed2,050 rpm
- Input power498 W
- Noise70 dB(A)
LWBE3G355-102NS-15 EC Backward Curved Centrifugal Fan Ø355 mm
Ø355 mm | EC | Max airflow 3,915 m³/h | Max static pressure 770 Pa | 70 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
Engineering files (on request)
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 downloadable. Tell us the project; an engineer sends the file after a short check, normally within 1 business day.
Need a non-standard size or another format? Ask an engineer or search the download center.
LWBE3G355-102NS-15 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø355 mm, rated 230 V EC, maximum airflow 3,915 m³/h, maximum static pressure 770 Pa, noise 70 dB(A), input power 498 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 | LWBE3G355-102NS-15 |
|---|---|
| Series | LWBE3G355 |
| Motor type | EC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 5.3 A |
| Input power | 498 W |
| Speed | 2,050 rpm |
| Max. airflow | 3,915 m³/h |
| Max. airflow (CFM) | 2,303 CFM |
| Max. static pressure | 770 Pa |
| Noise | 70 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -40 ~ 80℃ |
| Humidity | 5 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø355 mm |
| Rotor diameter | 102 |
| Impeller material | Galvanized Steel Sheet ( Impeller ) |
| Protection class | IP54 |
| Insulation class | F |
| Bearing | Maintenance-free deep groove ball bearings |
| Duty | S1 |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 40,000Hours(L10), At 25 °Croom, humidity 15%~65%RH |
| Speed control | Control input 0~10VDC |
| 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: 5 Pulse/R; FG internal open circuit output, external pull-up resistor 10K, pull-up voltage V+ |
| Auxiliary output | Output 12±0.3VDC, Max Current: 10mA |
| Protection functions | Current limiting protection, Over-temperature protection, Over-current protectionLocked-rotor 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 LWBE3G355: 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 (Ø355 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 | |
|---|---|---|---|---|---|---|---|
| LWBE3G355-102NS-15 this model | 3,915 m³/h | 770 Pa | 2,050 rpm | 498 W | 70 dB(A) | 230 V | |
| LWBE3G355-092PS-15 | 2,472 m³/h | 350 Pa | 1,400 rpm | 120 W | 68 dB(A) | 230 V | View |
| LWBE3G355-102PS-17 | 3,142 m³/h | 670 Pa | 1,900 rpm | 330 W | 77 dB(A) | 230 V | View |
| LWDE-355 (14")U-MWN-03 | 3,467 m³/h | see curve | 2,800 rpm | 659 W | 67 dB(A) | 110-120 V | View |
| LWBE3G355-102PS-16 | 3,554 m³/h | 618 Pa | 1,800 rpm | 285 W | 76 dB(A) | 230 V | View |
| LWBE3G355-102PS-18 | 3,915 m³/h | 770 Pa | 2,050 rpm | 423 W | 74 dB(A) | 230 V | View |
| LWFE3G355-102PS-09 | 4,171.5 m³/h | 906.4 Pa | 2,550 rpm | 520 W | 75 dB(A) | 230 V | View |
| LWFE3G355-102PS-03 | 5,047 m³/h | 1,009.4 Pa | 2,200 rpm | 700 W | 85 dB(A) | 230 V | View |
| LWBE3G355-138PT-20 | 5,356 m³/h | 639 Pa | 2,100 rpm | 990 W | 79 dB(A) | 400 V | View |
| LWFE3G355-102PT-10 | 6,180 m³/h | 1,751 Pa | 2,550 rpm | 1,100 W | 86 dB(A) | 400 V | View |
| LWDE-355 (14")S-MWN-04 | 6,200 m³/h | see curve | 2,800 rpm | 659 W | 67 dB(A) | 220-240 V | View |
| LWBE3G355-138PT-12 | 6,249 m³/h | 1,353 Pa | 2,710 rpm | 1,100 W | 77 dB(A) | 400 V | View |
| LWBE3G355-188PT-26 | 6,756 m³/h | 2,524 Pa | 3,800 rpm | 3,100 W | 96 dB(A) | 380 V | View |
| LWBE3G355-138PT-05 | 7,045 m³/h | 830 Pa | 2,700 rpm | 1,700 W | 81 dB(A) | 400 V | View |
| LWBE3G355-188PT-11 | 8,034 m³/h | 1,545 Pa | 3,200 rpm | 3,090 W | 96 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.
Related products
Other models in the LWBE3G355 seriesSame impeller, different speed grade or wiring
LWBE3G355-102NS-11Ø355 mm · 5,047 m³/h · 1,009.4 Pa · ECsame series
LWBE3G355-102NS-24Ø355 mm · 4,171.5 m³/h · 906.4 Pa · ECsame series
LWBE3G355-102NT-25Ø355 mm · 6,180 m³/h · 1,751 Pa · ECsame series
LWBE3G355-092NS-19Ø355 mm · 2,472 m³/h · 350.2 Pa · ECsame series
LWBE3G355-102NS-20Ø355 mm · 3,554 m³/h · 618 Pa · ECsame series
LWBE3G355-102NS-21Ø355 mm · 3,141.5 m³/h · 669.5 Pa · ECsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWBA4D315-138NT-15Ø315 mm · 2,318 m³/h · 371 Pa · ACadjacent size
LWBA4E315-102NS-18Ø315 mm · 2,079 m³/h · 399 Pa · ACadjacent size
LWBA2D315-188NT-17Ø315 mm · 4,120 m³/h · 1,082 Pa · ACadjacent size
LWBA4D315-138NT-16Ø315 mm · 2,781 m³/h · 515 Pa · ACadjacent size
LWBA4E315-102NS-19Ø315 mm · 1,859 m³/h · 294 Pa · ACadjacent size
LWBA4E315-138NS-13Ø315 mm · 2,318 m³/h · 371 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWBE3G355-102PS-18Ø355 mm · 3,915 m³/h · 770 Pa · ECsimilar duty
LWBE3G400-102NS-02Ø400 mm · 3,914 m³/h · 556.2 Pa · ECsimilar duty
LWBE3G400-102PS-01Ø400 mm · 3,914 m³/h · 556 Pa · ECsimilar duty
LWAA6E450S-5MEB-06Ø450 mm · 3,899 m³/h · ACsimilar duty
LWBE3G280-102NS-06Ø280 mm · 3,862.5 m³/h · 1,658 Pa · ECsimilar duty
LWFE3G280-102PS-04Ø280 mm · 3,862.5 m³/h · 1,658 Pa · ECsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point