Description
LWBE3G400-102NS-11 — EC Backward-Curved Centrifugal Fan
The LONGWELL LWBE3G400-102NS-11 is a backward-curved centrifugal fan driven by an EC external-rotor motor. Decoded from the LONGWELL type code: Ø400 mm impeller, Ø102 mm motor rotor, without housing / bracket, supply 230 VAC, three-phase winding, series number 11.
EC backward-curved fans are the standard choice for AHU, FCU, FFU, air purifiers, sterilisation and humidifier equipment, EC fan grids (fan walls) and data-centre cooling — speed is set steplessly by a 0–10 VDC or PWM signal, so the fan runs only as hard as the duty requires.
Type code — LWBE3G400-102NS-11
| LW | LONGWELL |
| B | Backward-curved impeller |
| E | EC motor |
| 3G | Three-phase winding |
| 400 | Impeller diameter Ø400 mm |
| 102 | Motor rotor diameter Ø102 mm |
| N | Without housing / bracket |
| S | Supply 230 VAC |
| 11 | Series number |
Product characteristics
| Impeller material | Glass-fibre reinforced plastic (PA6+GF / PA66) |
| Direction of rotation | Clockwise, seen on rotor |
| Protection class | IP54 / IP55 (per model) |
| Mounting position | Horizontal or vertical |
| Bearing | Maintenance-free ball bearings |
| Mode of operation | S1 (continuous) |
| Insulation class | F |
| Operating temperature | -25 °C to +60 °C |
| Control input | 0–10 VDC / PWM |
| Protection functions | Tach output, locked-rotor protection, reverse-polarity protection, over-voltage protection, soft start |
Performance data
Air volume, static pressure, input power and sound level for LWBE3G400-102NS-11 depend on the operating point you set through the 0–10 VDC / PWM input. Send us your required airflow and static pressure and our engineers will return the full duty point, the measured sound level and a dimensional drawing for this model — normally within one working day.
Typical applications
AHU (air handling units) · FCU (fan coil units) · FFU (fan filter units) · air purifiers · sterilisation equipment · humidifier equipment · EC fan grid / fan wall · ventilation units · data-centre cooling.
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