STSH-VSD Series 290 PSI
The STSH VSD 290 PSI Variable Speed Rotary Screw Compressors deliver high-pressure industrial compressed air from 25 to 100 HP with Variable Speed Drive technology for maximum energy efficiency and reliability.
- ✓Power range 25–100 HP with airflow 35–190 CFM and operating pressure up to 290 PSI.
- ✓Variable Speed Drive (VSD) technology with IE4 ultra-high efficiency motor and frequency inverter control.
- ✓Direct drive system with low-speed radial fan and microprocessor-based control panel.
- ✓Remote monitoring compatible with Industry 4.0 — ultra-quiet operation with heat recovery option.
- ✓Designed for environments ≥45°C — backed by a 5-year airend warranty.
Description
STSH VSD 290 PSI Variable Speed Rotary Screw Compressors – Precise Control and Maximum Efficiency
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.
The STSH VSD 290 PSI Variable Speed Rotary Screw Compressors are designed for critical applications where 290 PSI pressure stability and energy savings are essential to production performance.
Advanced VSD Technology for Industrial Compressed Air Systems
The STSH VSD 290 PSI Variable Speed Rotary Screw Compressors represent a significant advancement in high-pressure industrial air generation. By continuously adjusting motor speed to match real-time air demand, the system eliminates the energy waste associated with traditional fixed-speed compressors that cycle on and off at full load.
The frequency inverter control system monitors pressure levels and airflow requirements in real time, automatically optimizing motor speed to maintain stable 290 PSI output while minimizing electrical consumption. This intelligent control capability is especially valuable in industrial facilities where air demand fluctuates throughout production shifts.
The IE4 ultra-high efficiency motor used in the STSH VSD 290 PSI Variable Speed Rotary Screw Compressors exceeds standard efficiency requirements, delivering maximum performance while reducing heat generation and mechanical wear. Combined with the direct drive system and low-speed radial fan, the unit operates with significantly lower noise levels compared to conventional high-pressure compressors.
Remote monitoring compatibility with Industry 4.0 platforms allows maintenance teams to track performance data, monitor pressure trends, and schedule preventive maintenance without interrupting production. The optional heat recovery system captures thermal energy generated during compression and redirects it for use in facility heating or process applications, further improving overall energy efficiency.
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.
The STSH VSD 290 PSI Variable Speed Rotary Screw Compressors are the ideal solution for facilities requiring precise high-pressure air with maximum energy efficiency.
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
STSH-VSD Series 290 PSI Manual
STSH-VSD Series 290 PSI Catalog
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