Technical Data Overview

This document provides detailed technical specifications for the BERG KOMPBERG® BSDF series screw compressors with inverter and direct drive (1:1 ratio). The focus is on the BSDF 45 bar model with a nominal motor power of 55 kW.

1. Compressor Specifications

• Type: KOMPBERG® BSDF 45 bar
• Drive: Direct drive without gearbox (1:1 ratio)
• Motor Power: 55 kW
• Speed: Approximately 2970 rpm (varies with operating pressure)
• Voltage: Standard 400 V, optional 480 V
• Frequency: 50 Hz standard, 60 Hz on request
• Protection Class: IP55
• Insulation Class: F
• Cooling: Air-cooled with 7000 m³/h cooling air requirement
• Oil Capacity: 45 liters
• Oil Carry Over: 1-3 mg/m³
• Compressed Air Outlet Temperature: 10°C above ambient temperature
• Ambient Temperature Range: +5°C to +40°C
• Sound Level: 76 dB(A)
• Weight: 1300 kg
• Dimensions (L x W x H): 2000 x 1000 x 1640 mm

2. Performance Data

• Free Air Delivery (FAD): Varies by pressure:
  - At 7.5 bar: 2.5 - 7.7 m³/min (88.2 - 271.9 cfm)
  - At 10 bar: 2.5 - 7 m³/min (88.2 - 247.2 cfm)
  - At 13 bar: 2 - 5.8 m³/min (70.6 - 204.8 cfm)

3. Electrical and Control Features

• Variable Speed Drive (VSD): YASKAWA or Danfoss inverter for energy-efficient speed regulation
• PLC and HMI Controllers: Siemens-based control system for operational management and monitoring
• Electrical Connection: 3x50 mm² + PE cable section
• Motor Nominal Current: 72 A

4. Mechanical and Construction Details

• Base Frame: Carbon steel construction
• Sound Enclosure: Sheet metal profiles with removable doors for maintenance access
• Powder Coating Colors: RAL 7047 for frame, RAL 5002 for doors
• Compressed Air Outlet Connection: G 1 1/2 inch

5. Operating Conditions and Limitations

• Designed for ambient temperatures between +5°C and +40°C
• Compressed air outlet temperature maintained at approximately 10°C above ambient
• Oil carry-over limited to 1-3 mg/m³ to ensure air quality

6. Additional Notes

• The compressor is equipped with an electronic microprocessor control system for optimized operation.
• The direct drive eliminates the need for a gearbox, reducing maintenance and improving efficiency.
• Cooling air inlet and outlet dimensions and airflow rates are specified to ensure proper thermal management.
• The document includes proprietary information and usage restrictions by BERG Kompressoren GmbH.

This summary captures the essential technical parameters, construction features, and operational guidelines for the BERG KOMPBERG® BSDF 55 screw compressor model.