Hi All, I need to pick your brains. The Allanson "pow R pak" NST has an internal ground fault interrupt that starts to kick in when I raise up the voltage on the variac beyond 45 VAC.
I been google-ing all over today and have had no luck finding any info on disabling GFIs. Before I dig into it, I thought I'd see what your collective thoughts were.
Thanks,
Ed
Disabling Internal GFI in newer NST?
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Ed Meserve
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Disabling Internal GFI in newer NST?
Ed Meserve
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Jon Rosenstiel
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Ed Meserve
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- Real name: Ed Meserve
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Re: Disabling Internal GFI in newer NST?
Thanks, John! I pinged the search, but I didn't pull this up. Tough to know what to ask when you don't know what to ask. : )
Ed
Ed
Ed Meserve
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David D Speck MD
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Re: Disabling Internal GFI in newer NST?
Ed,
First of all, is this a traditional 60 Hz iron core transformer, or a modern high frequency solid state supply? If it's a solid state high frequency supply, you are out of luck.
If it is an iron core transformer, then you may be able to remove the bottom plate and see if the GFI circuit module is identifiable. On some of the GFI protected transformers, it is a discrete unit in one corner of the case. You can trace out the wires and figure out how to bypass it.
Unfortunately, many of the modern iron core transformers are completely potted in some sort of impenetrable epoxy. Bypassing the GFIs on these is essentially impossible.
Dave Speck
First of all, is this a traditional 60 Hz iron core transformer, or a modern high frequency solid state supply? If it's a solid state high frequency supply, you are out of luck.
If it is an iron core transformer, then you may be able to remove the bottom plate and see if the GFI circuit module is identifiable. On some of the GFI protected transformers, it is a discrete unit in one corner of the case. You can trace out the wires and figure out how to bypass it.
Unfortunately, many of the modern iron core transformers are completely potted in some sort of impenetrable epoxy. Bypassing the GFIs on these is essentially impossible.
Dave Speck