I suppose in most applications a 60Hz Xfmr would work ok at 400Hz.
My interest perks-up when somebody specifies an application, like 'driving a vibe meter'.
What's the application, or is this just some test set-up?
If you use a 60Hz Xfmr at 400Hz, I'd make sure I didn't exceed the Xformer input voltage, and I'd pay attention to the
fact that you'd have less voltage regulation at the secondary output because emf increases. (Again, what's the accuracy needed
for this application)
I looked on-line, and if colum is in the US, 'Surplus Sales of Nebraska' sells a lot of different 400Hz transformers.
Most people probably know 400Hz is used on aircraft to cut down on physical size and weight.
I know colum said his application is a one-time test of several instruments, but my perked-up interest is in why, and what
those instruments are being vibe tested for. Are these very heavily regulated aircraft instruments? Or just hobby-work?
Because of the filters needed for operation of 60hz equipment on 400 Hz circuits, the power supply circuitry can become
an issue because some types don't work correctly at 400Hz.
I may be over analyzing this, but as I said, the topic perked my interest, and I thought I'd submit my 2-cents worth.
Just some input for consideration (or not)
