SUA3000XLI - How many amps when batteries depleted ?

[Anonymous user]

TLDR; Got an APC SUA3000XLI in the basement where I share the breaker with about 10 other tenants on a 15AMP breaker. Can/should I attempt to limit the input on the UPS even tho "Input Nominal Voltage" is 240v ?

So I got a large 2700 Watts / 3000 VA UPS for free to protect my 3x Workstation HP Z420's that take about 600W total when measured. I will have to replace the batteries (RBC55) since they are shot and UPS is not starting, and will also buy the NIC for it so all 3 of my nodes can start shutting down once power is out.

The thing I am afraid of is that they are located in the basement, where I share the breaker with about 10 other tenants on a 15AMP breaker meaning that a tripped breaker will make life hard for them, since potentially it could take up to THREE days too bring it to life again.

Now the manual says "Input Nominal Voltage" is 240v (I live in Sweden), so can/should I attempt to limit the input on the UPS in a blackout event and the batteries need to recharge?

Misc other questions that might help noob me:

• This is an old UPS and RBC55 are not cheap. Wondering if I should buy a cheaper/weaker UPS ? I only ever need about 5min of shutdown time..

• The manual states that my UPS has one RBC only, but I pulled out 2 of them. The pics on ebay are of 2. What gives ?

• In case of water, I plan to get an IOT water sensor and send shutdown. Alternatively, build a HIGH plastic wall of sorts encompassing the rack..

• Any other tricks and tips is useful.

Thank you ever so much!

[BillP · Accepted solution]

Hi Alex,

The UPS will only draw what is attached to it, plus a maximum of 300watts or so overhead if the charger is fast charging the batteries. Ideally you should have more than a 15Amp circuit feeding the unit, but if your total draw is less than 15 amps you wont have an issue. RBC55 is indeed the correct battery kit. One RBC55 includes 2 battery modules. Each module is comprised of 2 batteries and a wiring harness.

Liam