We have a two winding single phase transformer that is rated 460V primary and 230V secondary in a control cabinet. Our distribution is 480V and this transformer was purchased incorrectly (European supplied cabinet) and is therefore providing a high voltage of about 260V on the secondary which is causing problems with controls and electronics.
Aside from the obvious answer of simply replacing the transformer I'm curious as to what other theoretical solutions exist.
The first one I can think of is finding a 20V buck boost transformer and wire it with the transformer to buck the voltage by 20V in order to supply the correct voltage on the secondary.
My second solution I dont know is possible, but can you install a reactor on one of the primary lines in order to drop the voltage across the reactor and thus present a lesser voltage at the primary of the transformer. The more I think about this solution the more I think it wont work, because the voltage drop across the reactor will be dependent on current in the primary which will change depending on the load on the secondary and therefore vary the voltage on the primary?
Aside from the obvious answer of simply replacing the transformer I'm curious as to what other theoretical solutions exist.
The first one I can think of is finding a 20V buck boost transformer and wire it with the transformer to buck the voltage by 20V in order to supply the correct voltage on the secondary.
My second solution I dont know is possible, but can you install a reactor on one of the primary lines in order to drop the voltage across the reactor and thus present a lesser voltage at the primary of the transformer. The more I think about this solution the more I think it wont work, because the voltage drop across the reactor will be dependent on current in the primary which will change depending on the load on the secondary and therefore vary the voltage on the primary?