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Transformer Nameplate Help

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    Transformer Nameplate Help

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    How can I determine where H1 and H3 are located? Where would the terminal board be located?

    Thanks!

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    Quote Originally Posted by rofo42 View Post
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    How can I determine where H1 and H3 are located? Where would the terminal board be located?

    Thanks!
    Without looking at the terminal board, you could determine where H1 & H3 are connected after doing a TTR test based upon your results.

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    Transformer nameplate

    Quote Originally Posted by rofo42 View Post
    Click image for larger version. 

Name:	Transformer.png 
Views:	14 
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ID:	480

    How can I determine where H1 and H3 are located? Where would the terminal board be located?

    Thanks!
    Usually the bushings are H3, H2, H1 left to right when facing the primary. The nameplate will usually reference the items to the drain valve or DETC on the transformer. With a Wye secondary use the nameplate for the location of the X0 busing and then observe the opposite winding layout. Dry type transformers are not always that simple as I have discovered numerous dry type in which the layout was incorrect. In this case I followed the connections of the "middle" winding to get the correct nomenclature for the terminals.

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