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  • March 25, 2014 at 8:06 am #5616
    Rhonda
    CVRS Member

    This is something I am interested in building but won’t get to it for a year because I already have other stuff on the go. I was just wondering how much interest there would be in such a circuit? There are newer capacitors out there where there is a need to go up to 1000 VDC instead of the traditional 500 VDC levels.

    Any thoughts on what you would like to see in this circuit?

    Regards,

    Gerry Shand
    780-910-7031

    April 3, 2014 at 11:42 am #5624
    Bruce Winter
    CVRS Member

    Hi Gerry – I use my Heathkit IT-28 capacitor checker for reforming electrolytic caps.Its maximum voltage is 600 volts.
    The eye tube provides a continuous leakage reading as I slowly step up the voltage and easy to see if the leakage starts to exceed an acceptable limit. Where does one find 1000 volt electrolytics. Highest rating I have found is 600 volts. If I needed a rating that high, I would likely use two 500’s in series.
    Cheers,
    Bruce

    April 8, 2014 at 1:17 pm #5625
    phil
    Forum Participant

    If you are really into capacitor checking, have a really fancy capacitor analyzer. I couldn’t tell you how it works exactly and haven’t really played with it much but I have the manual with it. This is a lot more of a piece of industrial grade test equipment and was surely an expensive piece of test equipment. If I recall it has calibration stickers on it. I think it may have come from BC hydro or BC telephone originally as I got it with some other stuff from an ex employee. If you have interest in it I’ll see if I can find it and take some pictures, and you can offer what you will for it. I have the little heathkit eye tube one and that’s probably sufficient for my needs.
    Phil

    April 24, 2014 at 6:17 am #5665
    Rhonda
    CVRS Member

    Hi All:

    I did a check and my memory is failing me!!! The largest voltage electrolytic I could find is 630 VDC and we would use two of them in series to filter 850 VDC on industrial variable speed drives running at 600 V, 3 phase input.

    But I do know there are other higher voltage capacitors out there but they are more specialized and would probably not require reforming or not as much of it.

    Thanks for the input.

    Regards,

    Gerry Shand
    780-910-7031

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