Back-UPS RS 800 230V ampere rating?

[Anonymous user]

what will happen if you are using a APC Back-UPS RS 800VA 230V with Cooler master extreme power 500w (RP-500-PCAR) PSU

the label [behind my UPS|http://www.apcmedia.com/salestools/ASTE-6Z7V4E_R1_EN.pdf] says it has a *3.5A* max output where as my PSU's input requirement is *6.3A@230Vac.* i have been using this setup for almost 2 years but now my UPS has stopped working. After powering on the UPS continuously beeps and the red "overload" indicator starts flashing (the technical support confirmed its a permenant damage and requires replacement).

the website has conflicting information on the ammpere rating, the manual and the rear of my UPS mentions it's 3.5A but the technical specs here [http://www.apc.com/resource/include/techspec_index.cfm?base_sku=BR800-IN|http://www.apc.com/resource/include/techspec_index.cfm?base_sku=BR800-IN] says the output is 6A.

now which is right and where can i find the exact details of my UPS. tried to contact the online chat support but there is no representative and the email response link is also down.


so could this prolonged use of low ampere ouput caused any damages to my PSU aswell? after the replacement can i continue using the same UPS or should i choose a higher specification model please help

Vivek

Message was edited by: brethart

[BillP]

Hi Bret,

Please check my response on one of your threads.

[Step Approximated Sine Wave|https://community.exchange.se.com/t5/Datacenter-Forum/bd-p/datacenter-forum]

[Anonymous user]

6.3A @ 230 = 1449W!

This number printed on your PSU is just telling you this PSU can draw as much as 6.3A when you turn it on for the first time during the day, when the PSU is cold and it happens in mileseconds then the PSU comes back to its steady state which is far below 6.3A

500W @ 230V = 2,17A + 20% due to efficiency losses, is still below 3.5A.

Don't worry, your 800VA UPS is capable of feeding your PSU that I also assume is not even close to supplying all its 500W power.

[Anonymous user · Accepted solution]

thank you rau i am much relieved,

going through many forums & articles i had actually decided to go for a smart series or 1 kva, but still i don't think it be sufficient for 1449W!, that's really a lot, now i know why my system wouldn't cold start on battery.

just one doubt though why do you think my ups faulted, i read somewhere that if the ups is consistently overloaded it may cause permanent damage. my ups went into overload more often in the last 6 months whenever i switched on my pc during self test, but this never happened when i bought it new. I am just powering my 500w psu, a 19" tft & broadband adaper. so will my ups fault again?

and my psu being able to deliver 500w which i suppose as with most higher end psu.is rated after accounting for efficiency losses?

hope you can give some advice. thank you

Vivek