Oil-injected screw air compressor
GL 55-90 VSD
The Smart Choice for Highly Reliable, Energy Efficient Applications


1.Advanced low-pressure screw mainframe
- Advanced asymmetric rotor profile design, large air volume, low energy consumption.
- Equal diameter design of rotor, close rigidity of yin and yang screws, better overall strength.
- Specially designed for low-pressure head, no over-compression, more energy-saving.
2.High efficiency motor
- High-efficiency IE3 motor, F-class insulation, B-class temperature rise, can ensure normal operation in harsh environments.
- SKF bearings ensure long motor life
- Equipped with phase sequence protector as standard, effectively preventing the motor from reversing.
3.Enlarged high-efficiency oil and gas separation system
- Reduced system pressure drop, effectively reducing energy consumption
- Oil content less than 2PPM, low oil consumption, lower maintenance costs, longer service life.
4.Pre-filter
- Air inlet filtration, effective protection of internal components, prolonging the life of the product
- Easy to disassemble and reuse
5.Heavy Duty Filter
- Removes 99.9% of coarse dust particles and protects compressor components.
- Extra large dust capacity for longer maintenance intervals.
6.Enlarged design of oil cooler and aftercooler
- Longer oil life due to lower rotor outlet temperature
- Elimination of thermal shock in the heat exchanger
- Elimination of thermal shocks in the heat exchanger Reduced system pressure drop and lower energy consumption
7.Integrated frequency converter
- Fast adjustment response, speed range 30-100%
- Integrated frequency converter design, compact structure, easy maintenance
8.Elektronikon® touch screen controller
- Built-in intelligent algorithms to optimise system pressure and reduce overall energy consumption
- Remote control, alarm outputs, maintenance scheduling and network diagnostics.
- Built-in Smartlink remote monitoring to keep track of the system status.
Flow chart
Variable speed drives: Reduced energy consumption
Compressor energy consumption accounts for more than 80 per cent of total life cycle costs, and the cost of producing compressed air is about 40 per cent of a plant's entire electricity bill (based on experience in the air compressor industry).To reduce energy consumption, Atlas Copco has developed variable speed VSD air compressors, a technology that not only achieves significant energy savings, but also protects the environment for future generations. Atlas Copco is able to offer a full range of VSD air compressors.
Why Atlas Copco variable speed technology?
- The air supply can be matched in real time to drastic changes in demand, with no additional energy wastage
- Elektronikon® controllers smoothly adjust motor speed in response to pressure fluctuations.
- No wasteful idling and emptying
- The compressor can be started/stopped at full pressure with no unloading waste.
- No peak starting currents, no impact on the grid
- No peak starting current, no impact on the grid Reduced system operating pressure, reduced system leakage
Technical parameters
Type | Maximum working pressure | FAD* | Motor power | Noise | Weight | Outlet |
bar(e) | psig | I/s | m³/min | cfm | kW | hp | dB(A) | kg |
GL55VSD | 3.5 | 52 | 81-218 | 4.9-13.1 | 171-457 | 55 | 75 | 77 | 2600 | DN100 |
5.5 | 80 | 82-216 | 4.9-12.9 | 172-457 | 55 | 75 | 77 | 2600 | DN100 |
GL75V5D | 3.5 | 52 | 115-305 | 6.9-18.3 | 242-646 | 75 | 100 | 77 | 2900 | DN100 |
5.5 | 80 | 117-299 | 7.1-179 | 247-633 | 75 | 100 | 77 | 2900 | DN100 |
GL90VSD | 3.5 | 52 | 147-385 | 8.8-23.1 | 310-815 | 90 | 120 | 77 | 3040 | DN100 |
5.5 | 80 | 150-378 | 9.0-22.7 | 315-801 | 90 | 120 | 77 | 3040 | DN100 |
Dimension:
L*W*H:2845*1750*1930mm
Product Tags:
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Smart Choice For Energy Atlas Copco Air Compressor GL 55-90 VSD Images
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