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Classification of UPS power supplyUPS power supply is composed by the host and battery, battery cabinet, which is divided into online, reserve and online interactive. According to frequency, there are high frequency machine and the frequency machine. It will rectify and store the mains AC in its own power supply when the machine has power to work, once the power supply is stopped, it will be able to provide power to maintain the use of electrical equipment for a period of operation, the holding time may be 10 minutes, half an hour, the delay time is generally determined by the capacity of the battery.? High reliability and uninterruptible power supply - to ensure power continuity? Grid regulation, purification function - eliminate grid fluctuations, pollution? Battery management functions - extend battery life?Intelligent monitoring function – an effective solution to the power maintenance functions Working Principle of UPSUPS is a constant voltage, constant frequency uninterruptible power supply which contains an energy storage device, using the inverter as the major component. When the mains is normal, uninterrupted power supply regulator mains or frequency stabilization for load frequency use, and simultaneously charge the battery in the machine; When utility power is interrupted, (abnormal) UPS immediately continue to supply the battery power to the load in 4-10 milliseconds or the interruption time of "zero" through the inverter switching, so that the load can maintain normal working, in order to save the data and to protect the load hardware and software from damage.Features of UPSIn principle, UPS is a power electronics equipment which integrates digital and analog circuits, automatic control inverter and maintenance-free storage device; In function, UPS can effectively purify mains when mains is abnormal; power the computers and other devices the mains suddenly interrupts for some time, allowing you to have plenty of time to cope with; In purposes, with the advent of the information society, UPS is widely used from the information collection, transmission, processing, storage, applications, and its importance is increasing with the increasing importance of information applications.Standby UPS power is more suitable for home useThe standby UPS power: usually in the battery state of charge, the inverter emergently switching to a working state when a power outage, turn the DC power provided by the battery into stable AC output, so standby UPS is also referred to off-line UPS. The ups backup power advantages are: high efficiency running, low noise, and is relatively cheap, mainly applicable to places with less demanding for mains fluctuations and power supply quality, which is more suitable for home use. However, there is a switching time for this UPS, so it is not suitable for the workplace cannot be interrupted in critical supply. But actually, this switching time is very short, usually between 2-10 milliseconds, and switching power supply power of the computer itself should maintain about 10 milliseconds, so the personal computer systems generally do not have problems because the switching time. The backup UPS generally lasts supply for a few minutes to tens of minutes, so you have the time to back up your data, and finish work at hand as soon as possible, and its price is also lower. For computer applications not too critical, such as personal home users, you can equip with small power back-up UPS.www.everexceedcorp.com develops, designs, and manufactures products to provide safe, reliable power solutions worldwide. We offer a full range of lead acid batteries (network & motive power) and Nickel Cadmium batteries covering a wide range of applications from sophisticated telecommunications, uninterruptible power supplies, AGV to emergency lighting and security applications, and offers a full range of Monocrystalline, Polycrystalline Solar Modules combined with PWM/MPPT solar controllers, etc.This article come from:http://www.storage-battery.com/index.php/introductions-about-uninterrupted-power-supply.htm