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How does transformer taps work?

  1. Dec 4, 2017 #1
    • Member advised to use the provided formatting template when starting a new thread in a homework forum.
    In the question below i know 200/480 V is rated voltage at primary and secondary side of a transformer, but '13' is what i do not know. Also how does the solution work out? i have tried every possible thing. Thanks


    (Sorry if i could not phrase my question in accordance to the pattern)


    upload_2017-12-4_14-42-38.png
     
  2. jcsd
  3. Dec 4, 2017 #2

    BvU

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    It is not 13, 200 but 13200 V
     
  4. Dec 4, 2017 #3
    omg! what was i thinking. Lack of sleep yesterday night may be causing this weird behavior .
     
  5. Dec 4, 2017 #4

    cnh1995

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    Possibly:wink:.
    I often make ridiculous arithmatic mistakes when I am sleep-deprived.

    In practice, distribution transformers are always step-down transformers, so you won't find any 200/480 transformer.
     
  6. Dec 4, 2017 #5

    BvU

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    I had good use for a 110 -> 220V transformer while living in a developing country...
    But I grant that the nameplate didn't say 'distribution transformer':smile:
     
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