There are different types of UPS systems available, each with distinct performance characteristics. Some of them are:
Standby - The Standby UPS is the most common type used for personal/desktop computers.
Line Interactive - The Line Interactive UPS is used for small business, web, and departmental servers.
Standby On-Line Hybrid – A UPS which is under 10kVA and is labelled as ‘on-line’ is referred to as a standby On-line Hybrid USP.
Double Conversion On-Line - This is the most common type of UPS with a rating above 10kVA.
Delta Conversion On-Line - This UPS design is a new technology introduced to eliminate the drawbacks of the Double Conversion On-Line design and is available in the range of 5kVA to 1 MW.