variable reactance transformer

[pavi1]

I have a request from a customer who wants us to use a "variable reactance transformer(VRT) in conjunction with a saturable core reactor. This unit shall be controlled by a solid state reactor driver." We normally use SCR controllers for our transformer coupled heaters. Does anybody know where I can find out more about this kind of setup and who makes them in the US. Any help will be appreciated.

 

[jraef]

Google "Mag-Amp" (with or without the dash).

 

[Skogsgurra]

The saturable core reactor is also known as a transductor.

(Yes, transductor, not transducer)

These devices were used a lot before the SCR became available and cheap. They are very sturdy. Can take lots of abuse. And they are simple. So they may find a use even today if the situation is such that you do not have access to qualified technicians, if you have a bad grid or if you need the ultimate in availability.

Wikipedia has an article about tranductors, but it seems to be about low level signal amplifiers instead of power applications. Same principles, though.

http://en.wikipedia.org/wiki/Transductor

Gunnar Englund

http://www.gke.org

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