Friday, September 16, 2011

UPS battery sizing for power failure in September as Food Network


!±8± UPS battery sizing for power failure in September as Food Network

The batteries in an uninterruptible power supply (UPS) are the heart and lungs, the ability to ride through short interruptions, while in office and run a different source or backup power supply (eg diesel generator) starts, or power Automatic shutdown routine.

UPS batteries must be rated for a certain period of time, have typically measured in minutes or hours to charge on a specific Watts, kW or MV. These load factors are integrated in aBattery resizing algorithm that takes into account a number of criteria, such as temperature and efficiency of the inverter and the system of continuity of supply to which it applies.

While manufacturers offer battery discharge diagrams and tables to facilitate the selection, use and expert manufacturers of UPS sizing software programs custom designed battery products around their properties'. Based battery packs usually also consistent with certain typesranging from battery and the battery manufacturer's own or stand.

The combination of UPS and battery in a solution of the next adjustment will be calculated load. For example, for a total load (including losses UPS) of 20kW, is the closest match 30kVA/24kW a UPS system. Provide a duration of 30 minutes in this scenario would be for the next battery option, for example, a 38Ah battery kit, which 25 minutes or 33 minutes at 24kW20kW.

Several factors need to be with the size of a set of batteries for uninterrupted power supply. In particular, the site's history in determining the depth, frequency and likelihood of power interruptions is important. The size of the critical loads must be determined. If there is a well-maintained standby generator on the site, this must be considered. How long does it take to perform load shedding to meet and / or the correct procedure for closing? The thought must be given immediateEnvironment, what is available on the floor and rack space is there, for example, and is a warm, wet and cold and dry? Impact on the cost must also be taken, especially in a difficult economic climate in which the cost reduction program is a must. What are the comparative cost advantages, for example, for the installation of a series of strings of batteries, particularly in the run individual lines of a standby generator or fuel cells?

Comparisons between the various Performancecontinuity of power supply manufacturers can be misleading. First, comparing the performance of the battery life between them is difficult without a common basis. The best solution is to ensure all terms are the same formula - load / watt ratings, load and performance factors. An example would be: a 10kVA UPS support a load of 8 kW to 0.8 pF, the term of a series 12Ah internal battery would be 14 minutes. But at 75 percent load (6 kW) and 0.6pF, would have the same UPS system offers nearly 20Minutes of operation.

It should be possible to set the battery size, which can be used to estimate domestic consumption specification of the stage with a performance of pollution control project, but because it is so important for the UPS to the mains supply and the resistance, put battery sizing planning be carried out by professionals to obtain accurate and reliable assessments.


UPS battery sizing for power failure in September as Food Network

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