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  #1  
Old 01-05-2012, 11:55 AM
bell bell is offline
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Default Trasformers or PDUs

i was going through a white paper on modular data centers and I came across a section where the author said it is advisable to use transformers instead of PDUs when you are planning for future expansion of the data center. Can someone explain why it is so?
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Old 01-09-2012, 12:04 PM
bell bell is offline
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im guessing the author was talking about using more floor mounted PDUs instead of rack mounted ones. but even that does not make sense. floor mounts take up a lot of space and not to mention expensive. what advantage could they possibly have over the rack mounts. i was under the impression taht the two sort of worked hand in hand and that's what made the power distribution easy.
can someone throw light on it, please?
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Old 01-09-2012, 02:57 PM
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KenB KenB is offline
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I think you may be confusing two types of PDUs:

Rack PDUs are power strips mounted inside individual equipment racks that provide outlets for plugging in equipment. These units sometimes have power and environmental monitoring capabilities. More sophisticated devices can turn individual outlets on and off.

Stationary PDUs are large, floor mounted units often containing a transformer to convert voltage to a level usable by rack mounted equipment. These units usually provide circuits to multiple equipment racks -- directly via internal breaker panels, or indirectly via external remote power panels. These devices often contain power monitoring features.

It's not clear from your description how PDUs, which are generally a means of power distribution, might be interchangeable with transformers, which are devices for power conversion.


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Old 12-13-2012, 02:20 PM
dataeletric dataeletric is offline
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Hi All,

I am under the assumption that a floor standing PDU would have a higher p.f vs. a rack mounted PDU - providing less loss from distribution.

Glenn
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Old 03-12-2013, 09:05 PM
ITivan80 ITivan80 is offline
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PDU are the best way to go transformers are bulky and take up to much space. It also creates heat. Hence raising you AC cost PDU strips are the best way to go because they have easy monitoring web portal.
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