Randy Gross said:
I read a very good analogy of Magnetic Shunts at the Pupman site where it
was discussed that the shunts were like putting a large inductor in series
with an Ideal transformer, diverting a portion of the flux back to its
By removing the shunts, I assume the full rated KVA of the transformer is
available? My question is: What are the negative effects (if any) of this
Not being a professional ee or designer like some of the others claim
to be... I think the rated kva of a transformer with current limiting
shunts is with the shunts installed....in other words the core is
designed to include the shunts
If the transformer is designed to be operated with the shunts
installed then removing too many or all of them would cause the core
to saturate...the primary will draw more current and the secondary
output will not see any increase........you could burn up the primary
When you remove a few shunt plates you will increase the current
output on the secondary but will generate more heat in the transformer
and if you remove too many shunts you may risk burning up the
secondary winding or windings.
I would remove a few shunts at a time and would then test the
transformer monitoring input current and output current.....you will a
reach a point where the input current and heat keeps rising with no
significant increase in output.
Doing any more will only saturate the core.
Ive done quite a few neons and oil burner igniton transformers.....did
a couple of oddball transformers. Never left more than 50 percent of
the plate out though......
Now then........lets see........I bottom posted so that will keep the
really anal off my back here .....oh.... I must warn you that I am a
hobbyist and not an engineer with a design business in my basement or
spare bedroom like some of the more educated guys on here.......but I
have offered this post from my personal experiences.......
be carefull......experimenting with electricty can kill you or at
least turn you into a complete asshole like it has done to a few of
the posters in here...