Need to know transformer calculations

Discussion in 'General Electronics Chat' started by Aaqib Mushtaq, Jun 23, 2015.

  1. Aaqib Mushtaq

    Thread Starter New Member

    Jun 23, 2015
    2
    0
    I want to construct a transformer for my solar inverter which is 3 phase 220 volt but i want to use two phases and convert it to single phase using single phase transformer. Also I want to tap this transformer at primary side that is 0-220-380v and output only 220v. I need to know the bobbin size and core size and also turn per volt if the transformer is 2kva that it is able to flow 8 amps current.
     
  2. Ramussons

    Active Member

    May 3, 2013
    557
    92
    Do you want to wind a transformer?
    Can you give a schematic of your plan?
    Remember that you will be putting an unbalanced load on your invertor.
     
  3. Aaqib Mushtaq

    Thread Starter New Member

    Jun 23, 2015
    2
    0
    yeah actually I want to wind a transformer with 0-220-380v primary and 220v output.
    2kva at most. 8 amp from secondary is fine. Just need to know the size of core and turns per volt.
     
  4. Ramussons

    Active Member

    May 3, 2013
    557
    92
    Thumb rule calculation:
    VA is proportional to Square of Core Area; 1 Sq Inch = 30 VA
    1 Volt = 6 Turns.
     
  5. AnalogKid

    Distinguished Member

    Aug 1, 2013
    4,546
    1,252
    A 1000 VA single phase isolation transformer from Signal weighs over 33 pounds, and you're shooting for twice that and multi-phase. At 70 pounds and bigger than a football, a very ambitious project. How do you plan to fabricate the transformer core? For this type of application, most transformer cores are many layers of stamped steel plates.

    ak
     
  6. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
    760
    Good luck winding the Tx
     
Loading...