What is this please? HV generator?

I bought the gelredome here.

the part weighs 17.5 kg.

on the offline partial discharge is a "guitar-amplifier input" (see photo)
You can see the inner workings on the photos.
and the connection front: sing the 3 small grounded.
and the great in the Center, is a hole that up completely in the transformer (or what is that) enters.
the ways I I put there the screwdriver into it.

I have what could be looked up on the net, but found nothing because the part built in 1978 is.

VLT can you help me.!
I already thought that this part produce the music with HV is so like TC music,.
but who needs something, or it was vlt time for the research.?

I hope you know more than I, as will you not drum rumkommen probably to create a wiring diagram of the intestines. If you have the ready, can you put it here and we then help you to figure out the how it works.
Until then help all labels on or in the body, the most stable and in good resolution (linked, not directly involved). I've done this now ;D
first of all, I want to say that I really mieß in the sketching am and this complicated rellertiv wr
to pursue, because I could not unscrew the middle part the cable :D
so I hope I forgot no cable, and yes that is why has become plan so badly on google I now as an ehnliches device found.
This was a beflockungsgerät and also works with HV

the device is called velourdecor, and beflocktes paper, is called Velo Urpapier...
There is a connection: hihi:
but perhaps much more of you know? I came now already pretty on it, what is it; D
but you can tell me vlt what share each are?

because T1 go cable,
then 2 thick to T2
and T2 only a thick to T3 (why only 1 pol??)
at T3, go and then restore normal cable away to normal cable with 230.

I don't that just online PD  , why only 1 pol zon T2 to T3?? Perhaps, the other pole of the transformers/coil is connected to the housing. There are also single-transducer the functioning ;) I don't look through it, but it is an interesting part. Do you have a multimeter with resistance range/inductance range? Then ring around the outputs (E.g. the single-pole cable with the housing).