Re: [TCML] capacitors

[Tomas Stankevic <Tomas.Stankevic@xxxxxxxx>]

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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