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500kVA-UPS.jpg

While not limited to safeguarding any particular type of equipment, a UPS is typically used to protect computers, data centers, telecommunication equipment or other electrical equipment where an unexpected power disruption could cause injuries, fatalities, serious business disruption or data loss. UPS units come in sizes ranging from units which will back up a single computer without monitor (around 200 VA) to units which will power entire data centers or buildings (several megawatts).

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Wikipedia About Battery Backup

500kVA-UPS.jpg

While not limited to safeguarding any particular type of equipment, a UPS is typically used to protect computers, data centers, telecommunication equipment or other electrical equipment where an unexpected power disruption could cause injuries, fatalities, serious business disruption or data loss. UPS units come in sizes ranging from units which will back up a single computer without monitor (around 200 VA) to units which will power entire data centers or buildings (several megawatts).

Common power problems

There are various common power problems that UPS units are used to correct:

  1. Power failure
  2. Voltage sag
  3. Voltage spike
  4. Under-voltage (brownout)
  5. Over-voltage
  6. Line noise
  7. Frequency variation
  8. Switching transient
  9. Harmonic distortion

UPS units are divided into categories based on which of the above problems they address, and some manufacturers categorize their products in accordance with the number of power related problems they address.

Technologies

The general categories of modern UPS systems are on-line, line-interactive, and standby. An on-line UPS uses a "double conversion" method of accepting AC input, rectifying to DC for passing through the battery (or battery strings), then inverting back to AC for powering the protected equipment. A line-interactive UPS maintains the inverter in line and redirects the battery's DC current path from the normal charging mode to supplying current when power is lost. In a standby ("off-line") system the load is powered directly by the input power and the backup power circuitry is only invoked when the utility power fails. Most UPS below 1 kVA are of the line-interactive or standby variety which are usually less expensive.

For large power units, Dynamic Uninterruptible Power Supply are sometimes used. A synchronous motor/alternator is connected on the mains via a choke. Energy is stored in a flywheel. When the mains power fails, an Eddy-current regulation maintains the power on the load. DUPS are sometimes combined or integrated with a diesel-generator , forming a diesel rotary uninterruptible power supply, or DRUPS.

A Fuel cell UPS have been developed in recent years using hydrogen and a fuel cell as a power source, potentially providing long run times in a small space.

Offline / standby

Standby%20UPS%20Diagram.png

The Offline / Standby UPS (SPS) offers only the most basic features, providing surge protection and battery backup. Usually the Standby UPS offers no battery capacity monitoring or self-test capability, making it the least reliable type of UPS since it could fail at any moment without warning. These are also the least expensive, selling for as little as US$40. The SPS may be worse than using nothing at all, because it gives the user a false sense of security of being assured protection that may not work when needed the most.

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News about Battery Backup

GE charges up its battery strategy with NY sodium plant

vnunet.comDanny Bradbury, BusinessGreen , Wednesday 13 May 2009 at 09:56:00 Just weeks after investing in lithium-ion battery firm A123, GE announces plans for new $100m sodium cell battery plant in Upstate New York General Electric (GE) provided a further boost to New York State's burgeoning battery industry yesterday with the announcement it is to build a $100m manufacturing facility in Upstate New ...http://feeds.vnunet.com/c/554/f/7147/s/42886b4/l/0L0Sbusines...

GE To Build Advanced Battery Plant In NY State

InformationWeekSodium battery business is expected to bring 350 "green collar," clean technology jobs to upstate New York.http://www.informationweek.com/news/showArticle.jhtml?articl...

GE to build new battery plant in upstate NY

San Francisco ChronicleGeneral Electric Co. plans to boost its profile in the battery business with a new plant in upstate New York that will produce high-tech sodium cells to power locomotives and heavy equipment. GE Chief Executive Jeffrey Immelt and New York Gov. David Paterson,... Related: New York - David Paterson - Upstate New York - United States - New York Gov. David Patersonhttp://www.sfgate.com/cgi-bin/article.cgi?f=/n/a/2009/05/12/...

General Electric to Power Up New Battery Plant in Upstate New York

GreenBizNISKAYUNA, N.Y. -- General Electric plans to open a $100 million state-of-the-art, heavy-duty battery manufacturing plant just north of New York's state capital, where it is expected to be the core of the firm's new battery business, the company announced today.http://www.greenbiz.com/news/2009/05/12/ge-battery-plant

GE to build new battery plant in Albany area

Capital News 9A new battery plant is on its way to Upstate New York. Governor David Paterson was on hand for the announcement at the GE Global Research Center in Niskayuna. Our Steve Ference has more.http://capitalnews9.com/default.aspx?ArID=139261

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MSN MoneyCentralThe MTSO is also equipped with enough backup battery power to keep the building operational for an additional eight hours, giving Verizon Wireless' network team ample time to refuel and maintain the generator and continue providing customers with ... http://news.moneycentral.msn.com/provider/providerarticle.as...

County approves items

El Dorado TimesTechnology and maintenance were a couple focuses on the agenda as the Butler County Commission met Monday and Tuesday. One of those items was requested approval of a Maintenance Agreement with Liebert. That agreement supports the battery backup unit ... http://www.eldoradotimes.com/news/x1272966946/County-approve...

Arup Signs European Email Backup and Recovery Deal with COPAN Systems

Forbes ... Stadium, Heathrow Terminal 5 and the Sydney Opera House, today announced that it has selected COPAN Systems to backup its ... company is privately held with investments by Austin Ventures, Globespan Capital, Pequot Ventures, Credit Suisse and Battery ... http://www.forbes.com/businesswire/feeds/businesswire/2008/1...

PMC-Sierra enlists GPON devices for FTTH deployments

Electronic Engineering TimesAdvanced power saving modes can lower PON deployment costs by reducing battery backup unit expenses. The reference designs come with complete GPON ONT software, featuring GPON functions, QoS bridging, VoIP, SIP and OMCI. The MSP7162 leverages the ... http://www.eetasia.com/ART_8800547715_590626_NP_e29bdea5.HTM

Free electronics dropoff set for Madison residents

Madison Daily LeaderItems that will be accepted include desktop and laptop personal computers, monitors, mainframe computers, battery backup uninterruptible power supplies, printers, scanners, copy machines, fax machines, TVs, VCRs, laser disc players, digital video ... http://www.zwire.com/site/news.cfm?BRD=1302&dept_id=181979&n...

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Backup battery - Wikipedia, the free encyclopedia

Backup battery is the name given to a secondary power supply, usually a direct current battery, to provide power in the absence of the main power supply.http://en.wikipedia.org/wiki/Backup_battery

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Wikipedia results for Battery Backup

Uninterruptible power supply - Wikipedia, the free encyclopedia

An uninterruptible power supply (UPS), also known as a battery back-up, provides emergency power and, depending on the topology, line regulation as well to connected equipment by ... http://en.wikipedia.org/wiki/Battery_backup

Backup battery - Wikipedia, the free encyclopedia

Backup battery is the name given to a secondary power supply, usually a direct current battery, to provide power in the absence of the main power supply.http://en.wikipedia.org/wiki/Backup_battery

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Sump pumps are usually hardwired into a home's electrical system, and may have a battery backup. Some even use the home's pressurized water supply to power the pump, eliminating the ... http://en.wikipedia.org/wiki/Sump_pump

Nickel-iron battery - Wikipedia, the free encyclopedia

... Nickel Iron Battery Frequently Asked Questions" BeUtilityFree ^ a description of the Chinese nickel-iron battery from BeUtilityFree ^ Web archive backup: Edison Battery Booklet original ... http://en.wikipedia.org/wiki/Nickel-iron_battery
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Answers for Battery Backup

angeldust0931What kind of battery backup would I need to run a 100 watt light bulb for 8 hours?angeldust0931I'm assuming you are talking about a UPS which has an inverter to convert the 12 volts DC from the battery to 120 VAC. PS, use a CFL, and a 30 watt bulb will give you the same amount of light. U...lift&shift 101Is there a type of system or way to hook a battery backup to an existing sump pump?lift&shift 101I have an AC sump pump that is set to turn on when the water reaches a certain height. If the AC fails, or the AC sump pump fails, then I have a 12 Volt battery system that will turn on when the wate...MachineDogWhat would happen if you plugged a battery backup into itself?MachineDogDepends on the UPS. Some UPS don't like to see the output waveform when running on battery as their mains input, so they won't switch back to AC. Likewise some UPS don't like to be powered from a gene...ashHow do I determine what size battery backup/surge protector I need?ashTo be accurate, you could add up all the wattages listed on all the equipment you just mentioned but, generally with what what you described, a 450VA would be just a bare minimum. Something in the 600...RebeccaI need a battery backup for my iPod for an 11 hour plane flight. What is a good one that is cheap & fast?Rebeccayou won't put it on for 11 hours straight don't you? i think it will last for like 7-8 hours. just reduce the brightness because you won't need it. it will save a lot of battery energy. or you can bri...
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