step down transformer used as step up transformer

Discussion in 'The Projects Forum' started by ebenezer fapohunda, Jul 21, 2012.

  1. ebenezer fapohunda

    Thread Starter New Member

    Jul 21, 2012
    1
    0
    i have seen engineers using a step down transformer for a step up transformer (33/11kv transformer primary side Star and the secondary Delta but now reversed in connections as 11/33kv)

    1. what are the implications it?
    2. if the practice is acceptable, what happen to the star point (neutral of the 33kv side)
     
  2. wmodavis

    Well-Known Member

    Oct 23, 2010
    737
    150
    No implications! A transformer is a bi-directional device.
     
  3. K7GUH

    Member

    Jan 28, 2011
    191
    23
    However, there is a lurking gotcha: the insulation on the 33KV winding may not be sufficient for that voltage.
     
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