Weiguang YWF4D-550S-137/50-G 550 mm Three-Phase Axial Fan with Grille
The Weiguang YWF4D-550S-137/50-G is a high-capacity, three-phase axial fan featuring an external-rotor motor, 550 mm steel impeller and protective grille. Its suction airflow configuration is ideal for commercial refrigeration, HVAC and industrial ventilation equipment.
Features
Energy-efficient external-rotor motor
High airflow performance
Five-blade 550 mm steel impeller
Suction airflow configuration
Protective grille included
Integrated thermal-contact motor protection
Sealed-for-life ball bearings
IP54-rated enclosure
Continuous-duty operation
Suitable for demanding commercial environments
Specifications
| Specification | Details |
|---|
| Manufacturer | Weiguang |
| Model | YWF4D-550S-137/50-G |
| Fan type | Axial fan with external-rotor motor |
| Impeller diameter | 550 mm |
| Motor type | Three-phase asynchronous |
| Number of poles | 4 |
| Supply voltage | 380 V AC, three-phase |
| Frequency | 50 Hz |
| Input power | 600 W |
| Operating current | 1.20 A |
| Rotational speed | 1,300 RPM |
| Maximum free-air volume | Approximately 8,510 m³/h |
| Air volume at 20 Pa | 8,193 m³/h |
| Noise level | 72 dB(A) |
| Airflow direction | Suction |
| Number of blades | 5 |
| Impeller material | SPCC steel |
| Rotor material | Die-cast aluminium |
| Motor protection | Thermal contact, 150 ±5°C |
| Enclosure protection | IP54 |
| Insulation class | F |
| Bearing type | Ball bearings |
| Duty rating | S1 continuous duty |
| Operating temperature | −30°C to +60°C |
| Storage temperature | −40°C to +80°C |
| Approvals | CE and CCC |
| Connection | Terminal box |
| Mounting arrangement | Protective grille |
Model Code Identification
YWF – External-rotor axial-fan series
4 – Four-pole motor
D – Three-phase asynchronous motor
550 – 550 mm impeller diameter
S – Suction airflow direction
137 – 137 mm rotor diameter
50 – 50 mm laminated-core thickness
G – Protective grille assembly
Typical Applications
Commercial refrigeration systems
Cold rooms and freezer installations
Condensing units
Air-cooled chillers
Evaporators and air coolers
HVAC and air-conditioning equipment
Dehumidifiers
Side-wall ventilation systems
Industrial equipment cooling
Sources: Weiguang manufacturer product data
