I'm going to run a 25kW 10kV 3phase pig . I calculated that I need 250nF,
voltage will be more than 20 kV (because of 6pulse mode and resonant
charging), so I think 30 kV is the minimum.
What do you mean custom-made cap?
Actually I have lots of capacitors,
Mddeming@xxxxxxx wrote:
In a message dated 12/3/07 1:13:36 P.M. Eastern Standard Time,
Tomas.Stankevic@xxxxxxxx writes:
,
what capacitors would you recommend me to build a 250nF @ 40kV MMC? (for
DC TC powered by 3phase pig) how much (approximately) it will cost? What
about shipping to Lithuania?
Tomaš
Hi Tomaš,
The cost would depend not just on the voltage, but also how much power
you will be putting through, as power determines the peak current your
caps will have to handle. Since the CD caps run ~$3.30 each, and you may
need several hundreds of them, a custom-made cap might be cheaper than
an MMC. I believe Dr R. may be the best source for truly large caps. Matt
D.
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