UPS BACK UP

This is required to work on the system continuosly without saving data even in case of power fails.

What does this mean?

save or not save data when power is off?

you may use a 5v supply instead of your converter.

to store data at usb

It means he is not saving backup data each evening or once a week. The UPS is always online 100% 24/7 so they do not need to backup data (save). This does not mean 'save periodically' (to our hard drive) as we do while working inside some application

it means that when power is off at evening, or get off work, they neednt to save data, but the converter is still online and waste power energy? what they hope to do is keeping the converter away from line? and when they are working, the converter will put into work? if so, that s very simple things. its enough just add a timer switcher Thank you PetroPower, very much for your helping me understand the sentence.

if there is still something wrong. pls point out as well.

In a home environment, a UPS provides power only so that you can save your work and shut your PC down in the normal way. You're not supposed to keep using your computer on battery power hoping that the utility power will return before the battery runs out.

In a business or industrial environment, if you want your computers to keep functioning in spite of power outages, you should have an emergency generator on standby to kick in a few seconds after a power failure. That way, your UPS will have to provide power for only a minute or two.

If you do not have a standby generator, you can take a risk by sizing your UPS to provide power for the longest duration of power outage that you can remember. If the longest power outage you experienced is one hour, then get a UPS that can run for an hour and a half or more. Again, this is a risk since the outage can last more than that.

The practical time expired with starting an emergency generator set and placing it on line is 10 seconds (the required safety code in most countries). Your suggestion is quite good. This is the normal setup.

I've also used the DG as prime power for the building, paralleled with utility (cheaper to generate your own power in a lot of cases), and I use an unstable utility as the back up supply . . no interruption on transfer.

Lastly I used a DG as prime power and NOT parallel with utility but use a motor generator set to provide 2-3 seconds of ride through while a transfer switch transfers to utility as the backup in a few milliseconds.

All these systems are common and have been utilised for 30 years.

You require to change batteries every 3/4 years , that doen`t make big difference to your budjet , when your UPS supports your system with power outages ,spikes,surges. Going for good quality , branded UPS system is better practice to avoide regular expenses

I assume that when you say:-

This is required to work on the system continuously without saving data even in case of power fails.

You do not mean that you do not have backups? As there are many other possible means of losing your data, not just from the UPS system failure......

How often are you replacing batteries? What exact type and size are these batteries?

How often does power fail to your system?

For how long?

The battery bank is usually used to maintain power to the computer UNTIL an auxialliary generator can pick up the load during a power outage. Once normal power is restored everything goes back to standby conditions.

Daily, weekly, and sometimes monthly back-ups are de rigor.

All else is folly.

I agree, but the original poster has not come back and made any statement to that effect up to now....

Thanks for all your posting & comments.Unfortunatly due to my health condition i have not gone through all the above points till this time.The UPS is ON line.So the Transfer Switch will not solve the proublem.Even when utility power is ON the ups output will be obtained through rectifier invertor combination.When the power is off the output will be through invertor from battery.My interest is to reduce the recurring expenditure of batteries or any other R & D request in this regard.Can we operate the system without UPS? What are all the effects? The reliable power can be maintained by Stabiliser.Is it adquate or battery back up is essential?

You need to tell us how you back up your data in the event of a crash happening, so you can recover quickly too as this will form the answers you will get!

Dear G .Swaminathan

UPS and stabilisers have different functions to perform , one only stabilises voltage fluctuations that you get from your suplayer and upto certain level protects from surges , spikes if they have suppressors built , UPS gives back up on power failure also with advantages of stabiliser , so it is upto you to decide . even if power failure is not issue in your place stil you have a back up they do not cost that much ?? online UPS does have advantages on offline due to pure energy through battery to load at all the times , but little expensive and batteries require maintanance (constant topping for acid batteries , replacements at regular intervals if using cheaper batteries)due to cotinuous use, you could opt for offline in that case , better than stabilisers , I suggest to have a good quality UPS like APC , siemens , microtech , with high quality battery , panasonic. i have not replaced battery since 4 years on my 1200 W online UPS , you have to have data backup if you know how important it is

G,

Your emphasis on On-line, and your revised functional description, suggest to me (others please correct if this is wrong) that your's is functionally an On-line (type of) UPS; so the inverter functions continuous duty (supplying AC output from battery to computer input) while the AC-mains input only maintains 12V battery charge (presumably only while the UPS is powered On).

In that case (again, others correct if I err), seems to me an automatic transfer switch could be one solution. It could be made to switch the mains to a local generator or even to local, "back-up" batteries--to increase computer run time while waiting for mains power to recover. (Those back up batteries could themselves be maintained, say, from the utility mains; or with solar power trickle charge;.....?)

Also, as I'm led to understand by some battery literature, you would want to keep the back-up battery (of batteries) isolated (when not in use--i.e., don't parallel them to the UPS battery for extra on-board capacity) from the UPS battery, and initiate standby service simultaneously of (if more than one) all new battery-back-up batteries. ...because a failing or bad battery in a multi-battery-case set-up can damage (promote failure in) the other (not failing or bad) batteries.

Just curious...what is the application....such that a high-quality, very rapid response, Off-line UPS won't suffice...at lower cost and with cheaper battery and longer battery life cycle? I have a UPS that will report inverter starts and mains recoveries for outages of such minute duration I never (by room light sag or flicker, or on screen) detected that they happened. The three unit battery is good for minimum 7 years. It can even be set up to start and stop computer operatons on a schedule every day; keep power mains event records; notify my by email or beeper of any power event....

I think that almost all of your comments are completely valid, they reflect my impressions too.

With regard to the battery problems, assuming that the batteries are of reasonable quality and size, then I suspect that the charging circuit he is using is not switching in and out correctly as the battery reaches full charge and is simply overcharging to a degree, lowering the battery life span dramatically.

It is also possible that the batteries are so often in "use" and for such long periods that they are being deep discharged simply too often and getting damaged in this way....

Of the two options, I do not have a clue at this time as to whether it is one, or the other or simply both!!

Either way, the batteries, unless of very high quality leisure type (which will help ONLY with regard to deep discharging) are dying off too quickly.

Even HOW quickly the Batteries are dying has not been exactly reported I believe!! Correct me if I am wrong.

We are sadly still missing a lot of very pertinent information to enable us to give some good fix(es)....he is not making this easy for us or him either!!!

G.S. Please go to www.activepower.com and you find answers to your questions. I currently have two 900 kVA Flywheels and two more on the way for another project. This UPS do not use batteries. Below are additional infos from Active Power.

How efficient is your critical power solution? CleanSource^® UPS from Active Power is the most energy-efficient UPS system in the world. At up to 98% energy-efficient, their solutions deliver real impact to your bottom line by reducing power consumption costs.

CleanSource UPS systems are designed to be more energy efficient, at both full and partial loads, than the conventional UPS systems available in the market today. This reduces your energy consumption and your corresponding energy expense. The power-dense and temperature-indifferent solution takes up less than half the space required by other UPS systems, and can be located virtually anywhere.

All this adds up to a solution with a much lower total cost of ownership. Talk to one of the power professionals to find out how your business can earn up to 60% cost savings over the system's life and pay for itself in a delightfully short period of time.

• Battery-free technology
• Smallest footprint available
• 98% efficient
• Continuous voltage regulation
• Power factor improvement
• Harmonic cancellation
• One-to-one genset sizing
• No additional HVAC requirements

• Highest system reliability
• 40°C rating on entire system
• Various remote monitoring options
• Expandable sizes available
• Low maintenance
• Simple installation
• No spill containment or special ventilation required
• Non-toxic

Product Features

• Flywheel Energy Storage
• Less than 150 second recharge
• Static bypass and wraparound contactor
• Bi-directional converter
• Local Emergency Power Off (EPO)
• RS232 or RS485 serial connection

• LCD monitor/control panel
• Programmable input and output contacts
• Redundant cooling fans
• Auto restart (programmable)
• Back-feed protection
• Self-diagnostics

Product Options

• GenStart - 24-volt gen set start power
• CSView™ - real-time monitoring software
• Remote EPO (Emergency Power Off)
• Local ESO (Emergency System Off)
• Remote status panel
• Static bypass switch

• Maintenance bypass
• Dual Input - no maintenance bypass
• 4-wire input & output - 480V 60Hz
• External Source Synch Option
• Seismic tie-down

I hope this will give you some ideas to determine your needs.

Rudy

Dear Texmo,

Thank for your response.You have given me the solution by fly wheel Technology.All are may please go through his comment, which is solve my proublem.I thing my written content was confused others.Thank you for all taking much strain to give solution.

G.Swaminathan

You probably got the solution , Texmo got it right , even though mechanical battery outperforms and outlives conventional batteries you have to consider energy density , power density per load , price is secondary issue if perposeful , i too admire this flywheel technology and see as technology of the future due to clean energy , longitivity , fast recharging(finest advantage) ,virtually maitance free but complete replacement to chemical one are unclear for given conditions and variable require ments , any way best of luck

G., hello to you.

You use a word or two that can have more that one meaning...perhaps I can ask about that later but first some thoughts...

First, UPS is not a substitute for backing up data on your hard disc(s)...unless perhaps you have RAID mirroring or something like that.

It could be that the UPS you have selected is not adequate to what you are trying to do with it.

The short life expectancy of your deep-cycle battery (or batteries?) could be due in part to the way you are using the UPS (continuously recharging the battery even when not necessary).

You could be using the UPS without any communication connection to the computer(s?)...so you have no way to set the UPS's functions with a GUI (on screen keyboard commands) -- software control would allow this kind of much better control--and it could allow you to use the UPS more efficiently and optimally to conserve battery and ensure capacity always for automatic shutdowns (with saving of open documents).

But before we go on to some suggestions, it would be very helpful for you to describe what you have in more detail. Here are some question that come to mind:

What is the computer operating system? ___________________________________

How many computers?___________________________________________

What is the computer's or computers' total wattage?_____________________

How many hard disc drives?_______________________________________

What UPS control service, (either within your operating system or provided with the UPS), if any< are you using to "manage" UPS functions?___________________________________________________________

Have you tested the UPS battery capacity (by turning off mains power to the UPS) to see how much time you have to do a manual save and shutdown?_________________________________________________________

How many and what are the peripherals connected to the UPS or computer?_______________________________________________________________

What is the rating and capacity of the UPS?___________________________

How much did the UPS cost and what does a replacement battery or batteries cost you._________________________________________________________________

That should do it for now.

Please, waiting to see your responses.

Thank you.

Well put.