Thanks to all helping us,
I learned a lot, mainly to be more precise when asking and talking.
The technical meaning of KVA was the only thing that was clear to us,
however we missunderstood the following:
it sounded for us that you get more power out of the system
than you put in (what would be a big conflict with the physics)
but now we hope to understand this:
Are we right that you build a system in which you put some power in for a
long time and get this power (without a loss factor) out in a
very short time, generating the sparks at a very high power of some KVA?
Frank & some more
P.s.: .de stands for deutschland=germany (somebody asked)