** Another source of high-potential tester components is sign-shops that
sell and service neon signs. Such shops typically have
used/'previously-owned' neon sign transformers that they sell at little
cost in my experiences. The only drawback to using a neon sign
transformer is that the secondary-CT is connected to Neutral/G -- so, the
DUT must be isolated from ground during testing.
>I mentioned the Hi Pot tester on eBay. But, I neglected to note the number
>and have had some requests. Sorry. It is 2585458595.
>
>I may sell out of the ones I have remaining, but if you are interested,
>similar units show up from time to time. Watch out, though, as I have seen
>them listed for over $500. For our purposes, they are valuable because they
>have a nice Variac and a 3 kv transformer. The AC voltmeter can be mentally
>converted to the dc output voltage and you can build an external
>rectifier/filter combination to obtain dc voltage. You will also need a
>microammeter to measure leakage current. This is a good unit for those who
>are partly lazy or who would have to purchase new parts.
>
>73, Colin K7FM
>
>
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