Selecting a static uninterruptible power supply
In the not-so-distant past, quality electric power received from the utility company could be properly defined as a power supply with reasonably good voltage regulation accompanied by relatively few and brief outages. This simple but adequate definition lost all validity with the launching of the solid-state electronic revolution--and most notably, with the proliferation of digital electronics. There are numerous types of power conditioners that eliminate or minimize power quality problems on an individual basis. Such equipment includes surge suppressors that effectively arrest transient spikes, voltage regulators that cope with problems of voltage deviation, and shielded isolation transformers that effectively screen out electrical noise. There are also hybrid conditioners that combine two or more of these individual functions. But when problems are severe, and supplied systems and equipment have a low tolerance level for even occasional and minor power quality aberrations--and where operations must be maintained on total loss of power--only a uninterruptible power supply (UPS) suffices. Static UPSs are offered in three basic versions--online, line interactive, and offline. Each is described.
- OSTI ID:
- 404455
- Journal Information:
- Plant Engineering (Chicago), Vol. 50, Issue 11; Other Information: PBD: Oct 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Rural-facility electric-power quality enhancement. Final report
Status of static UPS (uninterruptible power supplies) applications in the United States