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Maximum Load Factors

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camfink

Electrical
May 4, 2007
8
Hey guys, I was just wondering if anyone had on hand the Maximum Load Factors for various transformers? any help would be appreaciated, Thanks.
 
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Load factor is the ratio of the average to peak load. This is very much dependent on the loads served by the transformer. It is not a number that relates to a particular transformer.

If this is your question, where are you located and what type of loads are being served? Also what transformer sizes are you talking about?
 
Well I was basically wondering if for instance a Low Voltage Dry transformer had a lower/higher load factor than any other types mainly used. I am not that experienced with the use of transformers yet so its hard for me to explain any more. Thanks for the help though...
 
If you are asking if you can load up a dry-type transformer the same as an oil-filled, the answer is basically yes, subject to ambient temperature limitations, etc. Short-term overloading might be another matter.

But load factor is a function of the load, not the transformer.
 
Usually , but not like a rule , you can take a factor of 0.8 for oil transformer , and 0.9 - 0.95 , for dry transformer.
Everything depends on manufacturer.
Example , if you have S=630kVA, you can "count" on 630*0.8=504kW , oil transformer , and 630*0.92=580kW , dry transformer.
 
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