High voltage device unknown parts.

[quzuwe]

Hello,
I found an old flocking device (?). I guess it was used to create static
to have same velvet feeling when applying flocks.
I can remember that I had a look
at it as a kid and stopped there because of the high voltage.

However, now I’m wondering what the components are.
I guess (1) is a high voltage transformer to get some kV from
mains and (2) is a transformer to get 90kV (there is „90kV“ weakly written on it at the side).
But I have no clue that (3) is - maybe an inductor for earth reference or so?. 
It has mains connected to it and one highly insulated wire going to (2).
Additionally, there is a hole in the case where the connector from outside can directly plugged into (2).

I’d appreciate any information on the parts and circuitry.

Thanks!

[fcb]

My guess is that once past the interlock (relay PCB at top), mains is fed to the variac (front panel - bottom right). Output from the variac goes to (1) which is probably a step-up transformer, which then feeds high voltage AC to the main transformer (2) where it is turned into EHT - which could then be be switched by (3) - or possibly (3) is a potential divider (for monitoring the EHT).

Block (2) is probably a similar design to a TV LOPT (line output transformer), with multiple secondarys connected in series with HV diodes.

One other thought.  Block 3 could be a high voltage tube/valve. This could be used to shunt regulate the EHT. I've seen similar (but only at a few KV) for regulating focus voltage on high-brightness CRT's.

[quzuwe]

Thank you @fcb! 

[gbaddeley]

90kv doesn’t seem right. The wire insulation and clearance is not enough for 90kv, which can arc a few cm. Maybe 9kv?

[fcb]

90kv doesn’t seem right. The wire insulation and clearance is not enough for 90kv, which can arc a few cm. Maybe 9kv?

50kV cable can be 5mm diameter (https://www.genvolt.com/files/Datasheets/TV%20Cable%20Brochure.pdf)