• Hardware Relating To Distillation OF Spirits

  “Designing a Circuit with a Latching Relay for Still Protection”

  Posted by Yummyrum on December 7, 2024 at 11:17 am

  Nothing new here but it was asked about in a recent topic so I thought I’d throw up some diagrams if others are interested . The idea uses the simple latching circuit often seen where the big Red and green buttons are used to control a Contactor or heavy duty relay .

  ( Coils have inductance and that limits the current flow . If it says AC , it means AC). Getting back to the lamps in the switches . The Auxiliary contacts have been setup so that they can also switch the supply to the Lamps as well as providing the latching function . All this could have been done at higher voltage . But if we are going to have cables running to flow sensors and Over temp sensors , having a nice low 24V AC is a great safe option . I have bot shown connections to the Main contacts . It is intended that this unit goes before any controller or elements and the main contacts would feed such circuits .My recommended goto .wiki/index.ph … ion_Theory

  shadylane replied 1 week, 1 day ago 2 Members · 1 Reply
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  shadylane

  Member

  December 7, 2024 at 11:11 pm

  I also use a latched relay for the power to the still.There are two STC-1000 temp controllers with the contacts in series with the relay coil to shut off the power if the output end of the product condenser gets hot or the boiler exceeds 210’fThe reason I did it this way was to make the still as stupid proof as possible. I figure anything that limits drama is good. 120v is used for the control circuit, a 24v stepdown control transformer like your using would have been better. But my rig doesn’t have any remote wiring like switches to worry about. There’s power into and out of the box but the other wires are just coming from low voltage thermocouples. I did it this way based on simplicity and safety.

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