Blauberg Box EC Centrifugal Fans for Rectangular Ducts
The Blauberg Box EC series offers high-efficiency centrifugal fans specifically designed for rectangular air ducts. These fans are ideal for ventilation systems in commercial, office, and industrial environments, providing energy-efficient and controllable airflow.
Application
- For supply and exhaust ventilation systems in commercial, office, and industrial premises.
- For creating economical and controllable ventilation systems.
- Suitable for rectangular air ducts with cross-sections from 300x150 mm to 1000x500 mm.
Performance: Up to 11190 m³/h (3109 l/s)
Power Consumption: From 91 W
Sound Pressure Level: From 43 dBA
EC Motor Technology: Ensures energy savings up to 35% compared to asynchronous motors.
Construction
- Casing made of galvanized steel, resistant to atmospheric influences.
- Designed for continuous operation.
- Equipped with standard 20 mm wide connection flanges for mounting to rectangular air ducts.
- Includes a service hatch for motor inspection and maintenance.
Motor
- High-efficiency DC EC motor with an external rotor and backward-curved blades.
- EC technology meets modern energy-saving and control requirements.
- Provides controllable operation across the entire fan performance range.
- Features built-in thermal protection with automatic restart.
- EC motor has no friction or wear parts like commutators and brushes; these are replaced by an electronic EC controller board.
- Dynamically balanced impeller.
- Can operate on 50 Hz and 60 Hz power grids without affecting maximum speed.
Control and Speed Regulation
- Speed is regulated via a 0-10 V control signal from sources such as:
- Built-in or external speed controller.
- Controller equipped with sensors.
- Centralized building management system.
- The control signal can vary based on temperature, pressure, smoke content, and other air parameters.
- EC motor fans adjust speed and airflow based on the control signal to meet current ventilation system demands.
- Centralized building management systems can network multiple EC motor fans for precise control.
Mounting
- Designed for installation in rectangular ducts and can be mounted in any position.
- Mounting holes on the fan flanges allow direct attachment to air ducts.
- Adaptation to round ducts is possible using an optional adapter.
- When connecting via flexible inserts, ensure the fan is secured to mounting structures using supports, suspensions, or brackets.
- Ensure access to the service hatch for maintenance during installation.
Technical Specifications and Performance Data
The following tables and charts provide detailed specifications, dimensions, and performance curves for various Box EC models.
Dimensions (mm)
| Model | H | H1 | H2 | H3 | L | W | W1 | W2 | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| Box EC 30x15-1 | 150 | 170 | 190 | 228 | 350 | 300 | 320 | 340 | 5.5 |
| Box EC 30x15-1 max | 150 | 170 | 190 | 228 | 350 | 300 | 320 | 340 | 6.0 |
| Box EC 40x20-1 | 200 | 220 | 240 | 278 | 440 | 400 | 420 | 440 | 8.3 |
| Box EC 40x20-1 max | 200 | 220 | 240 | 278 | 440 | 400 | 420 | 440 | 10.0 |
| Box EC 50x25-1 | 250 | 270 | 290 | 328 | 530 | 500 | 520 | 540 | 15.7 |
| Box EC 50x25-1 max | 250 | 270 | 290 | 328 | 530 | 500 | 520 | 540 | 17.9 |
| Box EC 50x30-1 max | 300 | 320 | 340 | 410 | 530 | 500 | 520 | 540 | 18.7 |
| Box EC 60x30-1 | 300 | 320 | 340 | 407 | 650 | 600 | 620 | 640 | 24.1 |
| Box EC 60x30-1 max | 300 | 320 | 340 | 370 | 680 | 600 | 620 | 640 | 26.5 |
| Box EC 60x35-1 | 350 | 370 | 390 | 457 | 650 | 600 | 620 | 640 | 25.2 |
| Box EC 60x35-3 max | 350 | 370 | 390 | 512 | 650 | 600 | 620 | 640 | 36.0 |
| Box EC 70x40-1 | 400 | 420 | 440 | 496 | 750 | 700 | 720 | 740 | 42.2 |
| Box EC 70x40-3 max | 400 | 420 | 440 | 555 | 750 | 700 | 720 | 740 | 43.0 |
| Box EC 80x50-3 | 500 | 520 | 540 | 614 | 850 | 800 | 820 | 840 | 62.3 |
| Box EC 80x50-3 max | 500 | 520 | 540 | 670 | 850 | 800 | 820 | 840 | 54.3 |
| Box EC 90x50-3 max | 500 | 520 | 540 | 656 | 950 | 900 | 920 | 940 | 72.0 |
| Box EC 100x50-3 max | 500 | 520 | 540 | 656 | 950 | 1000 | 1020 | 1040 | 77.0 |
General Parameters
| Parameter | Box EC 30x15-1 | Box EC 30x15-1 max | Box EC 40x20-1 | Box EC 40x20-1 max |
|---|---|---|---|---|
| Supply Voltage, V/50 (60) Hz | 1~230 | 1~230 | 1~230 | 1~230 |
| Power Consumption, W | 97 | 101 | 91 | 192 |
| Current Consumption, A | 0.73 | 0.80 | 0.69 | 1.43 |
| Max. Airflow, m³/h (l/s) | 565 (157) | 665 (185) | 810 (225) | 1190 (331) |
| Speed, min⁻¹ | 3300 | 3500 | 2470 | 3010 |
| Sound Pressure Level at 3m, dBA | 44 | 46 | 43 | 47 |
| Air Temperature Range, °C | -25...+50 | -25...+50 | -25...+50 | -25...+50 |
| Energy Efficiency Class | B | B | B | B |
| Ingress Protection (IP) | IPX4 | IPX4 | IPX4 | IPX4 |
| Motor Protection | IP55 | IP54 | IP55 | IP54 |
| ErP | 2018 | 2018 | 2018 | 2018 |
Performance Curves
The following graphs illustrate the performance characteristics (airflow vs. static pressure, airflow vs. power consumption) for various Box EC models. These curves are essential for selecting the appropriate fan for specific ventilation requirements.
Example Performance Curves Description:
Each graph displays multiple curves, representing different speed settings or control signal levels. The X-axis typically shows airflow in m³/h or l/s, and the Y-axis shows static pressure in Pa or power consumption in Watts. Users can identify the operating point of the fan by finding the intersection of the system's resistance curve with one of these performance curves.
Acoustic Data
Detailed acoustic data, including sound power levels in octave bands and overall weighted sound pressure levels, is provided for each model to assist in noise level calculations and system design.
Example Acoustic Data Description:
Tables list sound power levels (LwA) at the inlet (КО входу), outlet (к выходу), and to the surroundings (к окружению) across various octave bands (63 Hz to 8000 Hz). An overall 'A'-weighted sound pressure level (LpA) at 3 meters and 1 meter is also provided.
For complete technical data, including performance curves and acoustic data for all models, please refer to the detailed tables within the original document.
