Description   Uninterruptible power supplies (UPS) are backup batteries that provide emergency power to electrical systems in case power becomes unavailable. They are connected between a power source (such as an electrical outlet) and the equipment to protect (such as a motor or computer).   Types   There are two main types of UPSs: single-phase and three-phase. DC power supplies are also available. Typically, single-phase UPSs are used with computers, bridges, routers,...
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Q & A on Uninterruptible Power Supplies (UPS)

We asked our users for their input on Uninterruptible Power Supplies (UPS). Here are the results of 131 users familiar with Uninterruptible Power Supplies (UPS).

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing uninterruptible power supply design?
19 answers
Answers:
1 to 1 Power factor, Improved energy efficiency, internal redundancy, longer life batteries, hot swappable battery packs, smart PDUs, redundant power modules.
~Stephen N, Sales, Londonderry, NH
High frequency technology, built-in power factor improvement technology, only d.c.o/ps for computers, lcd monitors,or any instrument which having smps power supply.
~Sanjay D, Design Engineer, Kolhapur, India
Technologies which are useful for cost cutting, especially use of low material like copper etc.
~Atul K, Marketing/Sales, Pune, India
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Q:
From your perspective, which companies are creating the most innovative uninterruptible power supplies?
19 answers
Answers:
MGE, EATON, APC, Tripplite, GE, Emerson.....
~Design Engineer, Skopje, Macedonia
APC By Schneider Liebert Powerware
~Hector Carrillo Bogard, Engineer, Veracruz, Mexico
Dell but that's because we purchased our servers from which they build UPS for the exact configurations of the server model.
~Mauro Campos, Technical Support, Brentwood, NY
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Applications and UseTop

Q:
What are some of the applications you have used uninterruptible power supplies for?
28 answers
Answers:
I have installed UPS's in retail outlets to protect their servers and routers and POS registers including protection of banking systems and in data centers. Have installed and commissioned and serviced UPS's from single phase to 3 phase .
~Technical Support/Services, North Bergen, NJ
Data center backup applications that require high availability. Disaster Recovery sites. Building power backup. Industrial/machinery power backup. Medical equipment power backup. Banking/ATM machine OEM sales for backup power.
~Stephen N, Sales, Londonderry, NH
In our country load shedding period is about 8-10 hrs daily so we use it for lighting and fan for cooling.
~Khalid M, Technical Support, Karachi, Pakistan
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Q:
Please share with us any “non-standard” applications that uninterruptible power supplies have been used for.
13 answers
Answers:
Electric fence energiser that works off 12vdc via a 220vac relay when the power goes down. Main input is a 13.8vdc power supply, switched to 7amp/hr battery, lasts for 24hrs when power is off. Maybe a reverse (UPS)?
~Alan P, Hydraulics Engineer, Durban, South Africa
A non standard application should be the emergency power necessary to refrigerate the nucleus of the reactor in Nuclear Power Plants like that at Fukushima.
~Paulo Wilson R, Engineer, Lorena, Brazil
To connected in parallel UPS from different branch Special Monitoring for several parameters Medical Application
~Hector Carrillo Bogard, Engineer, Veracruz, Mexico
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Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of uninterruptible power supplies?
8 answers
Answers:
Yes, plenty. Where people don't respect the "engineering and technology" they face serious consequences of it, in the long run. Especially here in India, space allocation, cooling and sub standard battery usage have created "fires" in many places. This created loss to the facility, danger to life, and man hour losses!!!
~Atul K, Marketing/Sales, Pune, India
If UPS is far and you don't have remote monitoring, you can "guess" if system is on line on bypass. Use remote monitoring capabilities available on all brands today, don't wait until a blackout to notice where the system is installed and what the status is.
~Israel H, Engineer, Coacalco, MEXICO
The interruption of the energy supplies for more than 12 hours due to a electric pane at the transmission lines from Itaipu, cracked out of the job many applications recently.
~Paulo Wilson R, Engineer, Lorena, Brazil
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FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
16 answers
Answers:
To be linked up with renewable energy sources such as solar(PV) or wind power generation where the batteries are also charged via these sources as well as mains power charging.
~Anil V, General Management, Johannesburg, South Africa
1. Auto shifting with out shutting of computers 2. Auto battery full cut off 3. Auto battery low cut off 4. Over load protection 5. Auto shift on Main low 6. Auto charging
~Khalid M, Technical Support, Karachi, Pakistan
Oil and Gas applications in several configurations Different type of batteries bank like NiCd o Gel batteries Configurator in mixed with Solar applications
~Hector Carrillo Bogard, Engineer, Veracruz, Mexico
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Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of uninterruptible power supplies?
14 answers
Answers:
Make sure that the inverter produces a good sine wave. Must have a good built in charger that preserves battery life by reducing the rate of charge as the batteries charge starts to reach capacity (ie nearly fully charged).
~Anil V, General Management, Johannesburg, South Africa
Don't only go with "brand" and price check the "real" specifications offered to your advantage. And see the local serviceability, let the local service industry be sustainable, global brands really don't bother of providing services, though they claim!!
~Atul K, Marketing/Sales, Pune, India
Yes, first you need to see if the system is modular so you don't have to expend much money at the beginning because you know you have scalability if it will be needed tomorrow.
~Paulo Wilson R, Engineer, Lorena, Brazil
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Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using uninterruptible power supplies?
14 answers
Answers:
Make a list of absolute requirements...attempt to purchase units that can be self serviced with hot swappable batteries and power modules..check TCO of various brands by determining OPEX for min of 10-15 years including battery replacement, preventative maintenance services.
~Stephen N, Sales, Londonderry, NH
As important as brand and price is service and maintenance. Look for authorized representatives and sub-vendor capacities. Don't buy "special offers"
~Israel H, Engineer, Coacalco, MEXICO
Yes make sure UPS has an alert system to let know network administrators that power has went out.
~Mauro Campos, Technical Support, Brentwood, NY
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