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Variable speed systems

RECOVAR®-E: the variable speeddrive system

RECOVAR®-E is a highly reliable, variable-speed gearbox with an energy recovery system and maximum efficiency across all operating points. A state-of-the-art system consisting of mechanical and electrical features, it offers an ideal solution of both worlds.

  • Maximized uptime and process security to ensure sustainable operation
  • Broadest flexibility to support various process and industries
  • Highest Efficiency to increase profit and lower emissions
  • Smart design to simplify installation and servicing at point of operation

RECOVAR®-E stands for RENK ECOnomic VARiator. From an operator perspective it means highest productivity in the oil and gas, chemical, hydrogen and many other process industries. 

Features

RECOVAR®-E: the variable speeddrive system

  1. Drivetrain efficiency 95% – Best in class for variable speed solutions
  2. Maximum availability – Mean time between critical failure is over 30 years 
  3. On-site maintenance – Spare part exchange possible on-site: gear rotor set, bearings, SI motor
  4. Low inertia – Allows for easy direct on-line starting of motor
  5. Low total harmonic grid distortion – Ideal for local grids
  6. Unparalleled simplicity – Engineered for maximum modularity
  7. Water or oil cooling – SI motor cooling is adapted to site requirements
  8. Smaller footprint – Same output while taking up much less space in the electrical room
  9. Less weight – than a full-power FC and transformer
  10. Less heat load – in the electrical room
Technical Data

RECOVAR®-E: the variable speeddrive system

Power transfer:3–25 MW (up to 150 MW with special design)
Low speed shaft:< 1,800 rpm
High speed shaft:4,000–25,000 rpm
Compressor speed range:70–105%
Transmission ratio:3–15
Toothing:Straight and double helical
Efficiency:95%