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Liquid Rheostat

Liquid Rheostat

Liquid Rheostat

(OP)
We have a 6k, 6.9kV Rotor Would Indiction motor that was probably built back in 40's. It is connected to a Liquid Rheostat control that is probably just as old as the motor.

There isn't too much documentation on the liquid rheostat. Does anyone know where I can find some good information about the operation and maintenance of a liquid rheostat?

Thank you!

RE: Liquid Rheostat

Do you know the make?
I used to come across an electrolytic starter made by a French company called AOIP. I used to come across them in quarries etc where the maintenance was very much lacking-they went on forever and so nobody tended to know much about them-apprentice quarry tech's would 'top them up'.
http://www.aoip.fr/us/epm.html
 

RE: Liquid Rheostat

The good news is they are still manufactured, I found a web site you might find useful.
http://www.lmpforum.com/inforum/Fixed-Electrolytic-Liquid-t2290.html
It seems the common electrolytes are Salt/Water of Caustic Soda/Water.
I expect you will be able to refurbish it and it will still be good to go in 2040
Good Luck
Roy

RE: Liquid Rheostat

(OP)
Thanks guys! I will read through it and see if any questions come up!  

RE: Liquid Rheostat

I recently designed a system at a cement plant for a crusher with a liquid rheostat.  I used Eletele at the recommendation of the cement plant.  They already had one which worked well.  Eletele was quite easy to work with and no real language barrier.  www.eletele.com.br/Reostatos_e.htm

I checked with flomatcher also but their unit is designed specifically for variable torque loads and variable speed rather than constant torque loads with high inertia like crushers and shredders.



 

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