Underloaded Transformer

Discussion in 'Homework Help' started by sh312, Dec 10, 2014.

  1. sh312

    Thread Starter New Member

    Dec 6, 2014
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    0
    What are the implications if a transformer is underloaded for example

    A transformer rated 300kVA but the load it takes is only 220kVA
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,148
    1,791
    There are none. A load takes what it takes and the rating is the maximum load that can be supported without consequences.
     
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  3. crutschow

    Expert

    Mar 14, 2008
    13,028
    3,237
    The only consequence is that the transformer output voltage will be a little higher due to less current through the internal primary and secondary winding resistances.
     
  4. Papabravo

    Expert

    Feb 24, 2006
    10,148
    1,791
    Does a little higher mean negligible in this instance. For example if I have 10:1 transformer rated for 5 Amps and I place 120VAC on the primary and draw 1 Amp from the secondary how much does the voltage increase?
     
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