STSH-VSD Series 290 PSI
Variable-Speed Rotary Screw Compressors | 25–100 HP | 290 PSI
- Power range: 25 – 100 HP
- Airflow: 35 – 190 CFM
- Operating pressure: 290 PSI
- Direct drive system
- Variable Speed Drive (VSD) technology
- IE4 ultra-high efficiency motor
- Frequency inverter control
- Low-speed radial fan
- Microprocessor-based control panel
- Remote monitoring compatible with Industry 4.0
- Ultra-quiet operation
- Heat recovery option available
- Designed for environments ≥45°C
- 5-year airend warranty
Description
Precise Control and Maximum Efficiency at 290 PSI
The STSH-VSD 290 PSI series is engineered for industrial processes that require consistently high pressure with maximum stability and energy efficiency.
Thanks to its direct-drive system and frequency inverter control, the compressor automatically adjusts motor speed according to real-time air demand, eliminating unnecessary load/unload cycles. This reduces energy consumption, improves pressure stability, and extends equipment service life.
The high-efficiency IE4 motor, combined with a low-speed radial fan, optimizes both thermal and mechanical performance, enabling reliable operation even under demanding environmental conditions. Its design is focused on critical applications where 290 PSI pressure is essential to the process.
Applications
Industrial processes requiring 290 PSI.
Automotive industry.
PET blow molding.
High-pressure instrumentation systems.
Specialized manufacturing plants.
Pneumatic processes with variable demand.
24/7 industrial operations.
Advantages
Significant energy savings through VSD technology.
Precise and stable control at 290 PSI.
Reduction of electrical consumption peaks.
Extended service life through variable speed operation.
Lower operational noise level.
Thermal energy recovery capability.
Adaptability to demand fluctuations.
Long-term reduction of operating costs.
Precision Engineering for High-Pressure Applications
The STSH-VSD series incorporates bar-and-plate heat exchangers from AKG – Thermal Systems, up to 60% more compact than traditional fin-and-tube designs, improving heat dissipation and maintaining consistent efficiency under high-load conditions.
The non-proprietary motors supplied by WEG S.A. simplify replacement and reduce maintenance costs. Models up to 40 HP operate in tri-voltage configuration, while higher capacities run on standard 460V. All units feature Class F insulation for enhanced thermal resistance.
The microprocessor-based control system includes:
- Optional touchscreen display
- Integrated phase protection
- Current protection for main motor and fan motor
- ABS enclosure with IP65 protection rating
- MODBUS communication
- IoT integration readiness
The intake system incorporates precision valves that optimize inlet airflow, maintaining stability under high-pressure conditions and contributing to overall compression efficiency.
Downloads
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Serie STSH-VSD 290 PSI
Variable-Speed, Direct-Drive Rotary Screw Compressor
- Variable Speed Drive (VSD) technology for automatic demand adjustment.
- Working pressure up to 290 PSI.
- High-efficiency IE4 motor.
- Direct-drive configuration with no transmission losses.
- Low-speed radial fan with integrated inverter.
- Ultra-quiet operation.
- Remote monitoring and Industry 4.0 / IoT compatibility.
- Optional heat recovery.
- Reliable operation in ambient temperatures of 45°C or higher.
- Service program and 3-year warranty on the airend.
Serie STSH-VSD 290 PSI
Variable-Speed, Direct-Drive Rotary Screw Compressor
- Variable Speed Drive (VSD) technology for automatic demand adjustment.
- Working pressure up to 290 PSI.
- High-efficiency IE4 motor.
- Direct-drive configuration with no transmission losses.
- Low-speed radial fan with integrated inverter.
- Ultra-quiet operation.
- Remote monitoring and Industry 4.0 / IoT compatibility.
- Optional heat recovery.
- Reliable operation in ambient temperatures of 45°C or higher.
- Service program and 3-year warranty on the airend.
Series STS-T y STS-TD
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- Tank-mounted design for simplified installation
- Available with integrated dryer and filters (STS-TD version)
- High-efficiency IE3 motor
- Low-speed operation for extended durability
- Ultra-quiet performance
- Automatic drain with built-in timer
- Ready for remote monitoring and digital integration
- 6-year airend warranty
- Service program available
Series STS-T y STS-TD
Belt-Driven Rotary Screw Compressor Mounted on Tank
- Tank-mounted design for simplified installation
- Available with integrated dryer and filters (STS-TD version)
- High-efficiency IE3 motor
- Low-speed operation for extended durability
- Ultra-quiet performance
- Automatic drain with built-in timer
- Ready for remote monitoring and digital integration
- 6-year airend warranty
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