Whoops hit the enter button sorry ADMIN please delete last diary entry.
Thanks.
Anyway, It finally got warm enough to get out to the barn and get some readings off of the 3 hp Baldor I've been working on. Last posting on this I was having problems with a digital meter and the low speed my 'cheap' lathe is capable of producing. Thew together a bridge rectifier and a cap in a small test bundle and yesterday marched out to the barn to tackle it again. Lathe was only capable of turning genny at lowest speed but cap smothed things out nicely. Here are the results.
All coils weighed in at 1.3 ohms resistance
Htz 5.7 - 5.8
Calculated RPM at that frequency 171 - 174. Stated RPM of lathe 170.
Each coil peaked between 16.27 and 16.37V open DC(hope .1 volt variance is OK)
Wired in 1 star (as per Zubbly's instructions):
Resistace 2.7
Line 1 32.9VDC
Line 2 33.1VDC
Line 3 33.1VDC
Using Ed's blade designer(if I'm using it right) I figure a 12' rotor w/TSR 8 would be a good match in low wind (up to about 15MPH) maybe furl at 20MPH.
Can someone who know what they are doing check my math on this?
A problem with Delta
In looking at Zub's chart delta has got me completely and utterly confused. Other than it appears to make these tests I should have a load on the curcuit to check amps I'm stumped. For instance listed as line 1 on 1 delta you connect and insulate leads 4 and 7. Where do you get your voltage reading across 1 and 12? If so, by looking at the diagram it doesn't even look like 1 and 12 are part of the same curcuit:-0 Can someone explain this to me in very simple 1st grade terms? Based on what I have read Delta is only efficient in higher winds and my average daily wind speeds here are between 6 and 18 MPH I probably won't use a delta configuration but I still would like to understand it. Maybe for switching on those days it's blowin 20 - 35 (also common, I'm on top of a hill)
Well that's it for now
Wildbill
