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My 17' Turbine so far
nekit:
Added some more lightning protection I built these varistors in parallel for surge protection. They are rated at 420 DCV an 22K A each. 4 of them on each leg is 88K a per leg or 176K A total capacity. Four have one leg goes to the + DC side and one goes to the common and 4 have one leg -DC and one leg common.
They should ground out at 420 VDC and protect at a much lower voltage than the Delta surge protection.
taylorp035:
To solve your vibration issues, maybe you could add a mass - spring damper to change the frequency and damping characteristics of the tower. Or even just adding some weight to the vibrating tower area, which would lower the frequency at which it vibrates.
nekit:
Added nearly 5kw of solar. Not nearly as exciting as wind, but it sure puts out nice stead power. System consist of 20- Evergreen Solar 220W panels that I got from Sun Elec. for 78 cents/watt and Power One 4200 Inverter. Built the mounting system myself. 6" dia. tubes on each end of frames made of 1" square tubing. Each frame holds 4 panels. Tiltable for summer and winter angles. Local power company is paying me Feed In Tariff of 30cents/kwh for solar and 17cents/kwh for wind.
nekit:
Figured while I was updating I'd show my solar hot water system. It consists of 4 panels of 15 vacuum tubes each for 60 tubes. I have a 100 gallon Stiebel Eltron tank w/exchanger on a closed loop system w/Ghrundfos pump. Supplies all my domestic hot water and supplements my radiant floor heat.(very little) I also have a backup on demand heater. Been up and running for about 4 years. For the $ this system is a no brainer.
nekit:
Just an update. Turbine is running good. It's been up and running for a 1 1/2yrs now. Seems to be holding up well. Has made 3600kwh over the past 12 months. Removed the furling shock and added some more weight to the tail a few months ago.
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