UPS Battery Cabinets

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Alwayslearningelec

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Any of you guys ever deal with large UPS battery cabinets.

I beleive the battery don't come installed in them. WOuld be very heavy. Is that correct?

What type of wiring is involved with them. I'm just curious. I'm surely not "figuring" anything for that type of scope. Thanks.
 
The one in our back room runs the computer, the phone switch, and selected lights. It's loaded a lot lighter than when it was new-- our newer computer takes only part of a single rack! Used to take a row of them.
Definitely came 'empty.' And the service company comes in now and then and measures things at each battery, and sometimes swaps out either a single battery or a block of them.
Wiring is direct to a panel about 3' from the unit. "All the electricity in the world" feeds the thing. Haven't looked at the breakers in ages!
 
What size systems? I just installed two decent size systems last year. The batteries are factory installed in the cabinets and connected by jumpers between the cabinets. Depending on the battery size the cabinets can weigh up to 5000 pounds each. Let me see if I can find some photos.
 
System with the battery cabinets on the right and the system components on the left. Battery cabinet (sorry about it being blurry). I believe that these were 5200 pounds each.UPS 3rd Floor 001.jpgUPS Battery Cab 001.jpg
 
infinity said:
What size systems? I just installed two decent size systems last year. The batteries are factory installed in the cabinets and connected by jumpers between the cabinets. Depending on the battery size the cabinets can weigh up to 5000 pounds each. Let me see if I can find some photos.
Click to expand...
10 kva
 
PaulMmn said:
The one in our back room runs the computer, the phone switch, and selected lights. It's loaded a lot lighter than when it was new-- our newer computer takes only part of a single rack! Used to take a row of them.
Definitely came 'empty.' And the service company comes in now and then and measures things at each battery, and sometimes swaps out either a single battery or a block of them.
Wiring is direct to a panel about 3' from the unit. "All the electricity in the world" feeds the thing. Haven't looked at the breakers in ages!
Click to expand...
It's a 3-phase unit, 6KVA/phase. Estimated to hold things up for 52 minutes. Never been tested fully; the generator out back kicks in first. [knock on wood]
 
For the ones that we installed, my guys had to install and wire the batteries in the cabinet. Remember that since you can't shut off a battery this is permitted live work and will require PPE. The last few I did had a DC supply voltage of 480 volts.
The size and number of batteries will vary based on the kva of the UPS and the design run time.
 
infinity said:
System with the battery cabinets on the right and the system components on the left. Battery cabinet (sorry about it being blurry). I believe that these were 5200 pounds each.View attachment 2569946View attachment 2569945
Click to expand...
curious for battery system like this - was there any requirement for Hydrogen detection in the room?

Sorry to hijack the thread, this has recently come up from an AHJ on a project we are supporting. Are folks generally required to put H2 detection / alarming in the room, like you would for 'battery rooms'?
 
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