General features Single-phase modular UPS systems (19” rack) Power from 1250 to 5000 VA VFI-111 on-line double conversion Adaptable, expandable and redundant solutions Easy and fast management and maintenance Functions Wide voltage range and input frequency Operating frequency from 50 to 60 Hz with auto-recognition Frequency conversion 50 in – 60 out or vice versa Extension of the input frequency range for operation with power-supply units Operation in eco mode (energy-saving) Possibility to set on line mode with a minimum load rate Adjustable output voltage with 1V intervals from front panel Low level of noise Measures internal and external temperature Controls the ventilation in relation to the temperature and the load Designed for remote emergency switch-off