Recent content by Grubbs1960

My second 17 in that line was a typo, I did indeed mean to type 7-8-17-12-13-16-7. At least that is what I penciled in on the wiring diagrams that I printed out from your post. I am apparently really good at making typos. Do I understand correctly that since these coils are wired in a loop...

Thank you profusely for getting me on the right track! It will probably be next week before I actually get a chance to actually test this, but I will post results when I do.

Below find new data, which does include only two distinct low readings in each row and column. My apologies for posting incorrect data in prior posts. Any insights this new data provides will be greatly appreciated. (Edited to add: I believe if I have gained a correct understand of what I...

... I have rearranged the data into two tables, as suggested. Neither conforms to the two distinct low values in each column and row. I am going to retest the leads the next time I am in the shop and will post my results. In the meantime, please find below the two tables just in case you are...

No need to apologize. I was just afraid that you might have missed that particular post since you responded to one that was a few posts later. If there is some additional tests that I can conduct to help verify this is a Dahlander and/or better understand the twelve loose winding ends, please...

This is my understanding as well. @Baluncore: My post #9 was a response to some of the previous observations you’ve made and I had a couple of additional questions that I am hoping you can answer.

This is a 1/2 hp, 3 ph motor. It powers a lathe, which would have no start up load. I don’t believe that it requires a starter.

Yes, but I when I did I was under the (apparently mistaken) impression that each set of six wires represented the ends of three different winding sets. And that bias caused my cursory examination of the diagrams to recognize only three windings. I now realize after reading what you wrote and...

Thanks for your response and that link. I’m getting more confident my motor is a double Dahlander, i.e. it has two independent sets of windings. The motor has a complicated mechanical rotary switch that I believe, depending on which position it was in, provided power to only one of those sets of...

I just checked and there are actually 48 slots in the stator As pointed out by Baluncore, there is an error in this table. The junction of the cell representing the row 15, column 14 should read 8.3 instead of open.

The motor is 230v, 3 ph, 1/2 hp vintage motor madeby Oliver Machinery Company. It originally had a drum switch that provided speeds of 600-1200-1800-3600 rpm. Speculation is that it is most likely a double Dahlander winding configuration. I suspect that there are more than 48 slots as the...

I have a stator from a 1/2 hp, four speed, 3-phase motor. Coming from the stator windings there are 12 wires (two separate sets of six on opposite ends of the motor). Unfortunately these are identified in what appears to be a non-standard numbering system and I have no diagram. One set of wires...