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Re: [TCML] Looking for info on GE 30F series capacitors

On 7/10/18 8:51 PM, Andrew Cobaugh wrote:
Please excuse the off-topic-ness of the post, but I'm hoping someone on
this list can help me out.

I am looking for information, hopefully datasheets, on some high voltage
capacitors that are long since discontinued. I have looked online and
cannot find any references to them. They are series 30F. These are the
catalog numbers and nameplate specs.

30F1427 3.3uF 10000VDC
30F1427 5uF 10000VDC
30F1431 13uF 10000VDC
30F1404  46uF 5000VDC

I contacted GE and the person that responded claimed they had no record of

Not surprising..

But that part number is of the right form for an older GE capacitor, but I couldn't find a "series list" that tells you what a 30F type is.

Have you got any more information? A photo of the markings might give some clues (date code, for instance)

They're large, rectangular, oil filled with dual ceramic bushings. I have a
bunch of these, and was hoping to use them to make a small can crusher or
exploding wire rig.

Since they're DC rated, they were probably intended for power supply filter duty, that being a much more common application than pulse discharge use (although you never know).

it's also possible that some research project contracted with GE to build them a batch of capacitors for, e.g., a rail gun, and GE assigned them a part number and built them.

But I'd be thinking about big radar/radio transmitter/high power RF applications. Lots of tubes run at anode voltages of multiple kilovolts, and there's countless industrial applications.

The voltage seems a bit high for a DC link in an inverter, but I don't know for sure, that's another application area.

It is very likely that GE made them in days gone by, but has sold that division to someone else.

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