[Amps] Big transformers?

[David G4FTC]

>From: Manfred Mornhinweg wrote

>perhaps someone can help me with a purely technical transformer question:
>
>I understand that large transformers have to be designed for lower flux
>density than small ones. Otherwise the core loss would become excessive,
>due to the less favorable area-to-volume ratio of the larger
>transformer. The question now is very simple: For an 8kVA transformer,
>using common inexpensive standard 0.5mm thick silicon steel laminations
>(no Hypersil  nor anything like that), what's the optimal flux density?
>

This is a question I've also asked myself.

>From my research I believe that most power transformers are designed to run 
with a flux density of up to about 1.5 Tesla at 50Hz.

Perhaps another reflector member can correct me one way or the other.

Regards

David G4FTC

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