PRZOOM - /newswire/ -
Miami, FL, United States, 2010/05/03 - UPSonNet launches "Online UPS Features and Prices Comparison Guide" to assists in selecting application oriented Uninterrupted Power Supply (UPS) solution.
A decision which UPS to buy is normally based on UPS Type, Size and Backup time; these however, are far from being sufficient. Additional factors, which affect Power Quality, Reliability and Cost, differentiate between various offered online UPS systems. These should be explored and compared before a decision is made. "UPS Feature and Price Guide" compares main features of Online Single Phase North American UPS brands from leading manufacturers, enabling to implement the most effective application oriented, and power protection solution.
Here is a partial list of ten items, in addition to warranty and Price compared in UPSonNet guide:
UPS Volt Ampere (VA) Value
Volt-Ampere, derived by multiplying UPS rated output current by output voltage forms the main UPS sizing feature, and should be higher than the sum of respective consumer's ratings.
UPS Watt Value
Volt Ampere (VA) figures do not suffice to define the needed UPS capacity. UPS Real Power measured in Watt units should also be checked to verify that it is above the Real power which the consumers require.
UPS Backup Time Value
Backup time is mainly affected by UPS Real Power. Therefore backup times are compared considering also UPS Wattage rating.
UPS Efficiency Value
UPS running and associated cooling costs should be calculated based on UPS efficiency and added to initial investment for cost/performance evaluation.
ECO mode Feature
Certain UPS system offer Economic (ECO) mode operation regime to enable 97% to 98% Efficiency figure. This High Efficiency mode of operation can decrease dramatically UPS running and associated cooling costs.
UPS Parallel Operation Feature
To meet future load demands, UPS systems should have paralleling ability, which enables increasing UPS capacity if required.
UPS Redundant Operation feature
Certain systems with Paralleling ability, offer also N+1 Redundancy, which enables to meet high reliability figures, needed in vital and data center applications.
User Replaceable Batteries Feature
User's ability to replace failed batteries, increases power availability and reduces costs. Hot swap batteries, enable to replace battery packs without turning the UPS off.
Maintenance By-Pass (MBP) Feature
Statistics indicate that 30% of UPS Power failures result from errors, made by maintenance personnel. MBP when equipped enables to isolate the load from the UPS, by connecting the load to the utility mains during UPS maintenance.
Load Shedding feature.
Load shedding helps Increasing UPS Backup Time by turning off consumers which require UPS protection from mains disturbances, but are not required to operate at utility outage.
Most manufacturers offer two years warranty. Some however do offer full 3 year warranty. The difference may have a considerable affect on purchasing decision.
Price of the UPS including internal batteries in US $, as offered by the UPS manufacturer or by manufacturer's recommended reps.
For additional important information, including guidance, buying contacts and links to manufacturer's specifications visit upsonnet.com/.