Hi Bert,
Thanks for the response.
This is the information that I have:
It's a Maxwell (now General Atomic - model 37330, using their proprietary
"oil". Impregnant: BTDP
Regards
Paul
On Mon, Apr 1, 2019 at 10:04 PM Bert Hickman <bert@xxxxxxxxxxxxxxxxxxxxx>
wrote:
> Hi Paul,
>
> If you can provide links to images of your capacitors, especially the
> face-plate, label, or stamped info, or if you can provide manufacturer
> info and model number, there is a possibility that we can identify the
> type of dielectric fluid. Was "Atomic Research" the manufacturer or
> perhaps the application they came from?
>
> As Jim Lux indicated, a large variety of capacitor dielectric fluids and
> blends have been used in HV capacitors over the last half century. Many
> of these fluids were proprietary and not readily available to a casual
> hobbyist and others (such as PCB's) are no longer available. And some
> benzine-based "aromatic" fluids were more volatile than others, so its
> possible that the capacitor rolls may have partially dried out.
>
> The easiest fix is to try adding mineral oil and resealing it. before
> resealing, drawing a partial vacuum for 24 hours or so may help to
> remove entrapped air inside the rolls if they've partially dried out.
> Finally, if the cap is packaged in a cylindrical container, remember to
> leave a small air bubble in the cap to provide room for expansion of the
> capacitor rolls especially if you plan to use the cap for Tesla Coil
> operation. The repaired cap should be usable, but you may need to derate
> its operating voltage...
>
> Bert
>
> Paul McGlen wrote:
> > Hi All,
> > I recently acquired some Atomic Research Pulse Capacitors. They are 50kV
> > and 100nF, however, one of them was damaged and the oil has leaked out,
> so
> > I need to replace this. Does anyone know what this oil is and where I can
> > get it. If not can I replace it with high voltage transformer oil?
> >
> > Cheers.
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> >
> >
>
>
>
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