Transformer with four secondary windings

[Cerkit]

Hi,

Has anyone come across a transformer with four secondary windings?

Does anyone know if it is alright to use a lumped impedance for modelling this or do I need to model as 4x transformers in parallel?

Thanks

 

[waross]

Are these four windings in parallel?
Most of a transformer impedance will be in the high voltage winding.
There may be little difference between the impedance of one low voltage winding and four low voltage windings in parallel.
The greater the transformer ratio, the less difference.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[cranky108]

At least for power transformers you can just about get anything you want.

I have seen a 115 Y/34.5 Y /34.5 Y/ unknown delta. mainly to reduce fault current on the 34.5kV windings.