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BD-B250B-EC-N07 is a 250 mm DC backward centrifugal fan with an external-rotor EC motor, 0-10 VDC/PWM speed control and FG tachometer output.
Basic Info
| Model | BD-B250B-EC-N07 | Fan Size | 250 × 250 × 99 mm |
|---|---|---|---|
| Rated Voltage | 24 VDC | Voltage Range | 24 VDC |
| Rated Speed | 2900 RPM | Maximum Input Power | 180 W |
| Maximum Input Current | 7.5 A | Sound Level | 75 dB(A) |
| Operating Temperature | -25°C to +60°C | Ingress Protection | IP44 |
Technical Description
| Impeller Material | Plastic | Number of Blades | 7 |
|---|---|---|---|
| Rotation | Clockwise, viewed toward rotor | Airflow Direction | All around |
| Insulation Class | Class B | Operation Mode | S1 |
| Bearing | Ball bearing | Cable Length | 500 ±20 mm |
| Motor Protection | Locked rotor, thermal, over/undervoltage, overcurrent | Speed Control | 0-10 VDC / PWM |
Product Application
| 1 | Charging Column | 9 | Equipment Cooling Project |
| 2 | Kitchen Smoke Exhaust System | 10 | Ventilation Unit Project |
| 3 | FFU Project | 11 | AHU Project |
| 4 | Computer Room Cooling | 12 | Air Purifier Project |
| 5 | Rail Transit Air-Conditioning | 13 | Heat Exchanger Project |
| 6 | Electrical Appliances | 14 | Telecom Container Project |
| 7 | FanGrid Project | 15 | Data Center Cooling Project |
| 8 | Ventilation Equipment Project | 16 | Industrial Cooling System |
Air Performance
Air performance measured according to AMCA 210 / GB 1236, installation category A. Maximum airflow is approximately 1470 m³/h and maximum static pressure is approximately 670 Pa under the specified test conditions.
Overal Dimmensions
The fan has an outer diameter of 250 mm and an overall depth of 99 mm. Refer to the drawing below for mounting and inlet-ring dimensions.
Electrical Connection
U1: power supply positive; U2: GND; U3: 0-10 VDC/PWM speed-control input; U4: FG tachometer output.
Download
BD-B250B-EC-N07-Technical-Specification
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