Need to know transformer calculations

Thread Starter

Aaqib Mushtaq

Joined Jun 23, 2015
2
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.
 

Ramussons

Joined May 3, 2013
1,417
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.
 

Thread Starter

Aaqib Mushtaq

Joined Jun 23, 2015
2
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.
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.
 

AnalogKid

Joined Aug 1, 2013
11,147
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
 
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