How is the current of a UPS distributed?

Question

I have a 1000 kVA UPS (I assume it's a standby UPS), described on the case as a Proline. In the specifications, the transfer time is given as 8ms typical, 10ms max, including detection and transfer (but I have no way of testing this).

Thanks to the previous replies to my query about this UPS, it seems as if the UPS is either faulty or is just an inferior product. In any event, I'm still reluctant to run my PC on it. I'm therefore still only using it for a 60W reading lamp. (The lamp flicks off and on briefly when there's a power failure).

Is it possible to tell how the current is distributed between the lamp and the UPS battery? In other words, if I keep only this lamp on all the time while the UPS is plugged into the mains, is the UPS battery charging up or will it eventually run down? Or isn't it that simple?

Answer 1

I have spoken to the people at Superior Electric about this problem. They were stunned at the flood of Standby UPS units on the market, since they felt that those would be unacceptable for computers.

But most computer power supplies are very resistant to the lamp flickering that you see. They probably will survive a majority of these "events".

But if you really want a True On-Line UPS, then visit http://www.superiorelectric.com/
Their STABILINE® SEG1000 would do the trick for you.

Do not use a UPS if you have power interruptions due to poor wiring. If you see lights flickering several times during the day, and this is NOT due to the local power company, you should call an electrician to check those circuits.

Answer 2

to the largest load, take the lamp and monitor off and just have your computer on it , it will work for that, it's not designed to run your whole house...