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UPS - for a new building

By tejalr ·
Can you name 3 to 5 critical parameters that are important to be addressed
Your views about Delta conversion on-line / APC
Your views about DB Power system, APC, Merlin Gerin and Emerson brands / makes
What brands and capacities you have and yourexperience with those in one or two sentence
What is the connected load Vs. actual measurable current experienced in your site
What is the AMC price (% of the equipment value i.e. basic or all inclusive)
What are the response levels, resolutions time, etc (SLA) at your sites
Any other that you feel most important

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UPS - for a new building

by tejalr In reply to UPS - for a new building

Point value changed by question poster.

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UPS - for a new building

by djent In reply to UPS - for a new building

These are questions that should be asked of UPS OEMs.

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UPS - for a new building

by tejalr In reply to UPS - for a new building

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UPS - for a new building

by Tim.Doyle In reply to UPS - for a new building

What are your goals? Do you want to keep your server room running, the whole building or just a couple machines? Do you have an onsite backup generator?

I have an APC symmetra UPS in my server room running 10kva. It will power my Meridian Option 11C phone system, 14 servers (3 Proliant 1600's with RAID 5, the rest are duplexing Proliant ML350's or lower), 19" monitor, 1 fiber switch, 1 36 port 10/100 switch, 2 24 port hubs 4 routers and a couple of modems for about 50 minutes in a total blackout. Current load is about 30% of the UPS's stated output capacity.

On top of that we have a natural gas powered generator onsite that runs my server room and every other light in the building. In an full blackout situation I could run some extension cords from my server room the my training room and hookup a couple dozen laptops to run off the generator/UPS.

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UPS - for a new building

by techrepublic In reply to UPS - for a new building

The trouble is... most of this stuff is completely irrelevant to you. UPS choice and sizing is on a per site basis.

I installed an APC Silcon 30kVA unit, with a load of approx 30% per phase. This gave over 90 minutes of runtime on battery, for all machines in my server room. Production critical machines were in a datacenter cage elsewhere.

My PBX, office NS, MX and switches were in another room, and connected to an APC Matrix 5kVA unit. Over 120 minutes of runtime there.

The rating plates on all of your machines are lying. These are the maximum power ratings, with some tolerance added too. It is highly unlikely that you will ever see whatever machine draw its maximum rated current.

For a server room, some sort of online, or online equivalent system is required. The Silcon is a Delta conversion unit, and I had no problems with it, beyond its first calibration.

When you are getting a unit installed, insist that the engineers do a load test on it, to ensure the UPS has been calibrated properly, and will give you the runtime expected (and indeed displayed) by the UPS.

Don't run your UPS over 75% capacity it is not polite. (You should really be looking at another unit if that is where you end up...)

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