Uninterruptible Power Supply

Conservatively, Computer Power Supplies use a simple rectifier bridge to change the incoming alternating line voltage to the direct voltage required to power computer circuits. Such rectifier works fineApple iPad 2 Case with all common voltage waveform types. Therefore, most Line Interactive and Standby UPS systems, based on economical considerations provide non sinusoidal output waveform. These systems however, are prone to drop load when powering newApple iPad 2 Hard Cases computer servers build to comply with recent green oriented legislative requirements.
Uninterpretable Power Supply (UPS) systems provide output voltage either from the utility mains (line) or from internal batteries by means of an inteApple iPad 2 Pouch Casesrnal DC to AC inverter which converts the DC battery voltage to Alternating AC waveform. Utility line voltage has a sinusoidal waveform with a grid frequency of 50Hz or 60 Hz. UPS inverter has a sinusoidal voltage waveform in most OnliniPad 2 Cases Stande UPS systems, and mostly a non sinusoidal, pulsed type (called also square, modified sine-wave, stepped) waveform in Stand By or Line Interactive UPS systems.
Pulsed waveform includes the basic sinusoidal waveform with the fundamental iPad 2 Adaptorsfrequency of the mains, and additional high frequency parasitic harmonics which do not contribute to the UPS output power. Recent green oriented legislations, such as Energy Star need increasing computer server’s efficiency and its poweApple iPad 2 Cabler factor by eliminating input current harmonics. In order to comply, new server power supplies use an Active Power Factor Correction (APFC) circuit instead of the passive simple rectifying bridge. We can expect most future standard compuiPad 2 Chargerters to include APFC circuits as manufacturers follow suit.
The new computers designed to work with sinusoidal input voltage, as reported, drop in certain cases the load if the Inverter provides a non sinusoidal waveforms. different to Apple iPad 2 Cool Casethe conservative passive rectifier circuits, which all contain similar input circuits; the specific design of the APFC circuit depends on the manufacturer. Thus, the exact behavior of a particular UPS with a particular computer cannot beiPad 2 ED Hardy Cases predicted.
Both Standby and Line Interactive UPS system are normally powered from the utility line, which provides sinusoidal waveform as required by the computer’s power supply circuit. Only when the line power fails (or deviates beyiPad 2 Glittery Casesond an allowed voltage window) the protected load is transferred to the internal Inverter.
The main threat with Line Interactive and Standby UPS systems with non sinusoidal inverters lies in the fact that its inability to protect new coiPad 2 Snake Casemputers is revealed at the very moment when the utility power fails and the Inverter kicks in. It’s like finding out that the brakes in your car aren’t working when you are on a steep downhill.
Hence, when purchasing a UPS make sure tApple iPad 2 Sleeveshat UPS Inverter supplies a sinusoidal waveform, to ascertain that it will be able to protect your current computer and any future computer you might need.
Megavolt Solutions is one stop solution for all your UPS Rental, Laptop Rental, iPad 2 StandInverter on Sale, IT Equipments on Hire, Online UPS Renting, Offline UPS on Lease & other IT needs & services in India. Type of UPS Inverter is only one aspect to consider when buying UPS systems for operation with new and future compute