Liebert® Super 400D (10/20 kVA)

True On-line DSP Based UPS with Unity Power Factor

The Liebert Super 400D is a true Online sine wave UPS system that provides the user with clean computer-grade power for continuous operation of his critical load, regardless of any disturbance on the upstream AC power. The system offers many innovative features to give the user maximum reliability and flexibility at the lowest operating cost. With the Liebert Super 400D UPS system, you have complete peace of mind.

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  • IGBT based rectifier
  • 10,20 kVA Models
  • Full Digital Signal Processing using the latest DSP technology
  • Parallel operation for Redundancy
  • Wide Input Voltage Range
  • Low Input Current Harmonic Distortion of less than 5%
  • Unity Input Power Factor
  • High Overload and Short-Circuit Capacities
  • Compatible with Engine Generators
  • High Reliability for Maximum System Availability
  • Handles 3:1 Crest Factor Loads
  • Intelligent Battery Management
  • LCD Display and Mimic Panel for Real-time information
  • Output Isolation between UPS and Critical Load
  • Temperature compensated Battery charging to enhance the Battery life
  • Battery test facility
  • Inverter output short circuit protected
  • Rectifier output short circuit protected
  • Immune to Reverse phase sequence
  • Auto retransfer facility
  • Alarms can be stored in the memory
  • DSP and Dual microprocessor based system


  • Facility wide networks
  • Medical equipment
  • Industrial processes
  • Large computer room

Technical specifications