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SFCube provides Sag-Free Fluctuation-Free (SFFF or SFCube) Power which makes it a cost-effective automatic sag and surge compensation device that ensures maintenance-free operation of electronic equipment over a wide range of sag and surge. TSi-SFCube series is designed to provide protection against sag and surge events within a typical compensation time of 20 milliseconds to comply with the requirements of the ITIC curve for power supply to electronics. 

How the SFCube works:

The high frequency Insulated Gate Bipolar Transistor (IGBT) driven compensator takes the incoming AC power, measures it against the nominal voltage reference to detect a sag or surge event. It then adds or subtracts a compensating voltage to achieve a regulated 230 V output.

Reliable TSi-SFCube Technology for Next Gen Electronic Machinery:

Key Features and Benefits:

  • Ability to handle sag of indefinite length.
  • Provides optimum sag and surge voltage compensation, as well as spike & noise control. 
  • Handles sag up to 45% of the nominal voltage and provides the output voltage within +/-2% of the nominal voltage.
  • Static technology results in quiet operation, high product up-time & low maintenance. 
  • Since the AC-AC Compensator is always online, hence even routine voltage fluctuations are compensated real-time.
  • Internal surge voltage protection assures trouble-free operation.
  • AC input circuit breakers and load over current protection prevents costly equipment damage.
  • Tight control over electronic card failures, data corruption and machine breakdowns result in higher productivity, lower operating costs, and greater consumer
  • Lightweight and compact size makes for ease of installation comfort..


Three Phase 6kVA to 30kVA, - 45%