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Waross, I also think that problem is the transformer due to the back that the SCR controller works in the other lines when installed. I am wondering if you have any ideas on how to prove that without replacing the transformer for a test. I dont think that management would be to keen on spending...

itsmoked I do have a schematic from the manufacturer and I will post on monday also

itssmoked, I apologize for not getting back to you sooner. I am sure that the scr unit has auto trip reset, When the fault clears it automatically resets and keeps running. Many ScR controllers have this option. I will send you the manufacturer name and model number on monday as I dont have the...

composite pro This line had gone thru the drying process during startup and was in operation 24/7 for afew months and this problem started showing up. I would hope that moisture would have been takenn care by this point, but maybe you could enlighten me about it more.

jraef, The explanation of the snubber circuit being a result of the problem is a good one , but how do you explain that the unit has no problem in another line . I would also like your explanation of why the same symptom effects whatever controller I put in this one line and are not effected in...

Thank you operahouse, but the controller has a built in snubber and MOV in it. Please explain if you think that would not be enough

As I explained, we have three units that are identical. We took the SCR controller out of the system and put it in a different unit and it worked. WE then took the unit taken out of the working unit and installed in the line that was the original problem and the samething occurred with a...

I have reached out to manufacturer and they stumped with it also.

The wiring required to get the 240 v would be 3wire conductor which is a black red and white wire with a ground. You will need to know the amp rating of what will be conneted to it for you to choose the right gauge wire. The probability will be that you will be using 12 gauge wire. You need to...

Condern1 I am looking for some tips in troubleshooting a system I am working on consisting of a 3 phase 480 volt line conntected to a 3 phase fired scr power controller with command signals of 4 to 20 ma from a temp controller. The output is sent to the primary of a 110 kva transformer where...