I watched the video. By what he is saying about dissipating 10 watts at 10 v and 1 amp. If it has a heat sink that big and it still gets that hot to burn you and the fet is at 244F degrees. I would not trust ever having a mosfet for a dump load . And also to let you know. My system right now has no battery tie. I feed the little one into the 22-60 GTI and the big one into the 10.8-30 GTI. Then the disconnect goes between the two. So when the fets burned out only the little pma was on the 22-60 GTI that burned out the fets. The 10.8-30 volt GTI is still on the external dump system and I have not had a problem with it since I changed the system.
Do you guys think preventing the 10-30 from activating until 16V or so is of any benefit, or is it very windspeed dependant? Perhaps Tom can make a version of his circuit to define the low-end cut in point for the 10-30 unit.
I do not see why. With the wind I get here it would not be a benefit. Without the battery tie it goes all the way to over volt every time just about when there is a gust.
I just wanted to add here. I tried a few settings on that VCS-1AH switch and the best I have found is 20v disconnect 18 volts reconnect. Any lower than 18 volts on the disconnect and it just spins for a long time without making any power. It also has a 1 sec delay both ways. to connect and to disconnect. I do not like it. it needs to be 0 delay.
This is not on the new switch I designed. This is the one I have mentioned before. That I am using for my dump load and GTI disconnect at the moment. I can not get it any closer or it will not work right.
Larry, Woke up looked at the GTI's. The 10.8-30 volt wind GTI light was green and not moving and showed 3.4 watts on the watt meter. Checked wind it was at 12 mph. Thought to myself. What is up with that. Great after all this testing my GTI DIED. Decided to unplug and replug in the GTI. And voila it started making power and the lights started bogeying. Felt a great weight lift off my shoulders. And a sigh of relief came over me.
Only thing I can think is that a spike or partial brown out did it. (UPDATE) This actually happened a few times. GTI would just lock up and stop working.
Ok makes sense. Do you have a surge protector on your electrical system? That may help prevent any future spikes.
Yes I do but sometimes we get a sudden drop and the lights do a quick flicker. Hardly noticeable some times.
Got home today and guess what?? Two grid ties were giving readings this time. No wind and one was at 23.7 watts and one was at 8.8 watts. They are on different circuits and I have the solar gti's split up on those two circuits. They are reading fine. I am starting to think it is the kill-a-watt meters starting to act up.
I would not doubt it. I have one kw meter that says my grid voltage is always 130v. I hope that is an easy fix for you.
Well I had one go bad about six months ago. It just stopped registering incoming watts. Also just thought about it. Since I have taken the battery tie off they have been beeping and going blank a whole lot more. Probably just scrambling the cpu brains from all the new action. LOL
I have found the same thing when i was using them that they would go blank sometimes and would register wrong readings. The new ones i have posted about work pretty good so far. I do not think we will find anything real good with out spending a ton on money to get a watt meter that is balls accurate. More with the ever chainging fast watts seems top be most of the problem with the ones i have had in the past. The ones i have now i would recommend but the have to be hardwired in the system and set in their own enclosure box. About 35 bucks all said and done per set up. I would not use them for more then one turbine's power readings. Here is another one i was considering that looks pretty good but it is about 65 bucks. More for just real time use only. I does not hold kw hr's but a nice looking unit and made in the USA. Link http://www.murata-ps.com/en/product...s/multifunction-meters/acm20-5-ac1-r-f-c.html Video http://www.youtube.com/watch?v=N_jkBAQL3GY
Well after a day of removing 5 inches of dirt and grass from a 14ft X 16ft area in the front yard. I have two new phrases. The spring chicken is now starting to feel like an autumn fowl. I've been STUPID and I can't wake up !!!! Been on the to do list for 17 years. Should have done it a least that long ago. Got 12 bags of sand and topsoil to work in today. Then it will all be over I hope. This area has been a real pain to mow for years.
I hear ya, i have been at it too. Lot's to do outside this time of year. The weather has been great. After my few projects outdoors it's onto a larger tower for my 1kw. Go'n big. LOL Good luck
The first boards that I can not use are in. They are just as they were pictured from OSH Park. All component holes are plated through the hole. Also the name I put on the board did end up as copper on the board. That is why it gave so many errors. Go to properties and change it to 25 tNAMES or 26 bNAMES. Also the pads are too small. On the second board I increased them. Same with the traces. Also if you look at edges it still has the tabs where they broke them apart.
