UPS White Papers
UPS Topologies and Standards
Overview With the vast increase in the number and types of sensitive loads, the term UPS (Uninterruptible Power Supply) is now used to identify devices with power ratings ranging from a few hundred VA, designed to protect desktop computer hardware, up to several million VA (MVA), for large computer and telecommunication centers. That is why the IEC (International Electrotechnical Commission) established standards for the different types of UPS and the methods used to measure their performance. Standard IEC 62040-3 and its European equivalent ENV 50091-3 now clearly define three types of standardised UPS and the methods used to measure their performance. The three types of UPS are: passive standby; line-interactive; double conversion. A comparison between the three UPS topologies shows that the double-conversion topology offers many advantages. However, at low power ratings (< 2 kVA), the three types of standardised UPS are all employed, but for higher power ratings, double conversion UPS are used almost exclusively.
| Publisher | MGE UPS Systems | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | December 1999 | Downloads | 280 |
| Format | White Papers | ||
| Topics | |||
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