Re: Delta-Wye Secondary Voltages With One Lost Pri Phase
You are welcome W7. Tangents are fun. I've renewed some of what I forgot. I've been in maintenance mostly for the past 30 years. Don't get to use my engineering training much. After I read the document closer, the voltages I calculated were correct for the 480/277 delta. The results the article shows is in per unit of Van volts. This works out to the 277 and 138.5 and 415.5. Two readings show -30 degrees and and one shows 150 degrees but it is 180 out from the reference I used which would make it -30 or 330 degrees. This basically makes them in phase.
You are welcome W7. Tangents are fun. I've renewed some of what I forgot. I've been in maintenance mostly for the past 30 years. Don't get to use my engineering training much. After I read the document closer, the voltages I calculated were correct for the 480/277 delta. The results the article shows is in per unit of Van volts. This works out to the 277 and 138.5 and 415.5. Two readings show -30 degrees and and one shows 150 degrees but it is 180 out from the reference I used which would make it -30 or 330 degrees. This basically makes them in phase.