Re: primary voltage

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Mddeming@xxxxxxx 

In a message dated 3/30/06 9:22:48 A.M. Eastern Standard Time, 
tesla@xxxxxxxxxx writes:
Original poster: "MakingLightning" <MakingLightning@xxxxxxxxxxx>

I see most people use 14.4KV or 15KV for their primaries.

Has anyone had any experience using 19.8KV or 20KV? Was it hard to control?
What were your results?

Kevin M. Conkey



Hi Kevin,

    While there are increased corona tendencies and insulation and 
spacing considerations with higher voltages, the use of 14.4 kV and 
15 kV is mostly a matter of availability. The 14.4kV is the most 
readily available distribution transformer size in the US, while 12 
kV and 15 kV are the ubiquitous sizes of traditional NSTs. 
Transformers in other sizes are harder to find, usually more 
expensive, and getting an exact replacement in case of a disaster is 
a problem. Once you get above "standard" voltages, the cost of other 
parts increase dramatically. For example,in an MMC, for a fixed value 
of capacitance, doubling the voltage requires four times as many caps.

Hope this helps,

Matt D.