John Thornton wrote: > When it trips it is so fast you can't see any change on the meter, if > only I had an analog meter I could watch the needle swing. > Right, that's why I was suggesting making the spindle accelerate to just less than what causes it to trip. I assume the spindle takes a second or so to spin up to 2000 RPM. That should be enough to detect a voltage dip (or surge). You say the DC bus does NOT fluctuate when it trips, is that right?
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