Autotransformer Starter

[ptonsparky]

Anyone happen to have a wiring diagram for a CH Autotransformer Starter circa the early 70s or 60s handy?

Just had a horrible thought that we "missed something" on this type of controller as we change from all maunual start/stop to a PLC at this small industrial. Would help if I go in Monday with a plan vs just a hunch.

 

[cadpoint]

31 results are their home page. www.Eaton.com using your terms of

diagram+CH+Autotransformer+Starter

http://www.eaton.com/EatonCom/Searc...t=diagram+CH+Autotransformer+Starter&x=12&y=7

 

[ptonsparky]

Just have to know how to ask the question.

Thanks, I think this is what I need.

My help is good enough that they may have already compensated for my lack of planning. Sometimes they just don't let me know.

 

[masterinbama]

Keep it as simple as possible. You are going from this.

http://ecmweb.com/images/706ecmMFfig2.jpg

To this.

http://ecmweb.com/images/706ecmMFfig1.jpg

 

[ptonsparky]

Master, for all but three of our larger motors, you are correct. I wasn't sure how the extra timer or two on the the autotransformer starts worked in the holding circuits.

 

[templdl]

Please remember autotransformer starters either have 2 coil or 3 coil autotransformers and will have different controls.

 

[Jraef]

Please remember autotransformer starters either have 2 coil or 3 coil autotransformers and will have different controls.

I don't think the number o coils in the autoransformer has any effect on the control circuit. It's still 3 contactors and a timer.

 

[ptonsparky]

My help already had it under control.

 

[masterinbama]

My help already had it under control.

That's punny