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Offline/standby UPS: The green line illustrates the flow of electric power. Typical protection time: 5–20 minutes. Capacity expansion: Usually not available. The offline/standby UPS offers only the most basic features, providing surge protection and battery backup. The protected equipment is normally connected directly to incoming utility power.
In an online UPS system, a rectifier-DC-link-inverter is used to protect the load from transients and harmonic content. A battery in parallel with the DC-link is kept fully charged by the output in case the grid power is interrupted, while the output of the inverter is fed through a low pass filter to the load.
The Smart-UPS is a series of enterprise-level uninterruptible power supplies (UPS) made by American Power Conversion (APC). [1] Most of the units have a SmartSlot (with the exception of SC and SMC series) which accepts an optional interface card providing features ranging from network connectivity to temperature and humidity monitoring. [ 2 ]
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The following other wikis use this file: Usage on bs.wikipedia.org Neprekidno napajanje; Usage on en.wikibooks.org Minimizing Hard Disk Drive Failure and Data Loss/Electricity Control
UPS will move the majority of air cargo in the U.S. for the postal service following a transition period, according to UPS. UPS will become the primary air cargo provider for the United States ...