Tripp Lite’s SU20KX (20kVA) SmartOnline Modular 3-Phase Intelligent, True On-Line UPS System provides 100% system availability with 1+1 parallel capability. In 1+1 configuration, two SU20KX models connected in parallel can provide fail-safe redundancy (two 20kVA models supporting a 20kVA load) or increased capacity (two 20kVA models supporting an 40kVA load). The SU20KX provides mission-critical equipment with the highest level of power protection available. Large capacity 20,000VA/16,000W UPS continually converts incoming AC power into filtered DC power, and then resynthesizes it back into AC power with a pure sine wave. Perfectly regulated, continuous sine wave output with zero transfer time assures compatibility with all equipment types.
High input power factor, advanced IGBT inverter technology and Digital Signal Processor (DSP) technology produce less than 3% input total harmonic distortion (THDi). With low THDi, generators run cooler and last longer, allowing managers to save installation costs by installing a generator with a capacity equal to the equipment load (1:1 ratio). Extremely efficient operation (up to 97%) saves money by lowering electricity consumption. Hardwire input and output connections. The SU20KX features 50 or 60 Hz (auto-selectable) frequency. The SU20KX combines internal power and battery modules in a single small-footprint tower compartment. Typical half-load/full-load runtimes are 13 min./5.5 min. Battery runtime can be extended with optional stand-alone hardwired external battery modules (Models BP480V26B and BP480V40C, available separately). A manual bypass breaker and an automatic bypass function ensure 100% availability of connected equipment by safely passing through AC power if the UPS requires maintenance.
Some of the feature of?Tripp Lite’s SU20KX are,

Low THDi (less than 3%) reduces installation costs by allowing 1:1 generator sizing
Maintains continuous operation with zero transfer time through blackouts, voltage fluctuations and surges
Removes harmonic distortion, electrical impulses, frequency variations and other hard-to-solve power problems
20,000VA/16,000W power capacity with 3-phase, hardwire input/output connections
Wide input voltage correction range: 173-276V/300-477V AC
Extremely efficient operation (up to 97%) saves money by reducing electricity consumption
1+1 configuration: Two SU20KX can be connected in parallel to provide either fail-safe redundancy or increased capacity
Precision +/-1% output voltage regulationTrue on-line, double-conversion UPS with IGBT technology provides pure sine wave AC output at all times