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Re: [TCML] BPS Testing
In a message dated 3/13/2008 7:36:52 A.M. US Eastern Standard Time,
>> Gary, when you depotted the NST, did you disassemble the
>> core and slide the straight core off of the laminated frame?
>> Or did you leave the core intact and just soak it to clean it?
>I'm sure that I completely removed the core from the windings when I
depotted it. But I have very little >recollection of the core geometry. I'm still
kicking myself for not taking photos, but that was before I >got my first
digital camera. I don't recall having any trouble getting the core tightly
reassembled, so the >laminations (with integral shunts) may have been riveted or
welded together into two separable >assemblies. It sounds like your
laminations were individually loose?
My laminations were riveted, but I removed the rivets which was not easy.
I did this because otherwise I was not able to disassemble the core, for
reason. But anyhow I was suggesting that since you disassembled your
core, and even though it went back together tightly, maybe there's some
sort of change in performance as a result of the re-assembly. I don't know.
I'm thinking this may explain the super-power of your NST. And my
15/60 also drew 25 amps after re-assembly, but I'm not sure what it
drew before repotting. However my 12/30 didn't seem to change much
as a result of re-potting.
Regards, Gary Lau
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