UPS HACK solar power and wind turbine DIY.
on May 26 in Lowes DIY
I bought a UPS by APC what a great add on to solar and wind turbine setup. I will keep you posted on how it works out.
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@davevanden1 Your right I am very inpressed with the UPS. I now have run designated cicuits to my office and entertainment equipment.
Thanks for the comment.
@MrLagros
you say they are going bad?
if they are smart ups”s and there is a bad battery they will not work
i just had a customer give me two units cause they said they didnt work threw new batteries on them presto good as new lol it takes quite a bit to kill these units they also have a great surge protector built in
the good thing with these ups ’s is the smart ups has cold start function the regular ones dont.
the small ones are 12 volt the 750 is 24 volt then they jump up to 48 volt this is what i am using for my inverter it works great and pure sine wave and the beauty of it I can give my batteries a good solid charge every so often keeps them equal
@OBXSOLWIND I’m guessing you mean 50-80? I guess that’s not too bad, maybe a little less than what a commercial sine wave inverter/charger would give you (maybe the same, probably depends on load). Pretty neat!
@linuxpyro I dont know the efficiency. I would guess 5 to 8 percent and yes it is a pure sine wave inverter.
CHEERS OBX NC
That’s a pretty neat hack. What’s the efficiency like on it? Also, is the output a sine wave?
VERY NICE. THANKS
@OBXSOLWIND That’s exactly what I was thinking. Since I have two entirely seperate circuits, I was thinking about setting an APC on the circuit that will run my computer, and have everything else on the modified sine circuit. I would be running it at about one third capacity also.
Thanks Skiipy.
I just want everv one to be cautious with these things because we are asking them to do somthing they are not realy ment to do. I bought a large one for this reason. I am planning to only run it at about a third of its capacity.
Have fun but be safe.
Kevin
I think I may have answerd you Q on your video you just made.
Kevin, that is awesome. I am scouting around for one of these right now.
I tryed running my Apc in to my Xatrex 300wat the apc relays just claderd it didnt whant to work right.
Mr Lagros
That is a great question. I have thought of this and I will test it. It dose say on the UPS that it cleans interferance and surges but I dont think it will correct sine waves. I did a stess test on this thing tonight. I ran a 1500w heater for 1HR and it did fine.
OBX NC
You know… I just threw away a UPS similar to what youre showing. I have two more that are going bad that I may have to consider changing over. Question, could a person take a modified sign wave as input into this, then the output would all be pure sign? Just a thought?
OK, I finally get it, thanks. I now realize your stereo is powered by the wall inverters and is not directly connected to the UPS. So your UPS supplies 120V AC to the wall inverters and the wall inverters pass that on to the stereo. When the 48V battery bank fails, the wall inverters make 120V AC from your 12V battery bank.
My inverter must be cheap because it doesn’t have a transfer switch in it.
Hey Mark
I will try to do a video on fusing and maybe go into how my system is wired and point out all the safty features.
Another great video Kevin thanks. Have you posted about fuses before? I have the 300Watt inverter like yours but had to move up to the 600Watt due to my panel putting out to many volts. My tests have worked great now. I was thinking I needed to put in a fuses for safety. Can you post a video on how you have yours system set up. Maybe I can use a rest switch. Very new to this game so I’m looking for lots of input from those who have had success.
Thanks again!!
Cheers Mark
Hey FIELD
When the inverters on the wall are pluged into A power source the transfer switches inside pass the power strait through. When the power is removed they switch to battery.
I guess the answer to your qustion is the UPS will feed through the inverter till its batterys are drained and will shut down. Then the inverter on the wall will see no power coming in and switch to the main battery bank.
I hope that was what you were looking for.
Kevin OBX NC
Thank you FIELD16
I think it is important to keep safty in mind.
Thats why I am huge on propper wire and fuses on every thing. Fire is the #1 danger with these types of systems because of the large amperages involved.
Once again thank you for bringing up that point.
Kevin OBX NC
The last two sentences were quoted from the web. I just wanted to mention that to let others know that when you start playing with higher voltages, you should take extra safety measures. That’s one reason I love 12V… almost no danger of getting shocked. Cheers!
It’s great that the UPS includes its own battery charge controller. Great work!
7:34 – Are you saying the wall inverters come to the rescue when your 48V batteries under the table get too low? Your inverters on the wall are supplying 120V AC, right? Seems like the UPS would switch immediately when it sees AC power coming in. Did you modify your UPS to drain the 48V batteries first?
My college electronics lab text says that 42V is the lowest fatal jolt on record. Water was involved.
Yes let me know if I left any info out on my last reply.
Take care
Hey fanman
There is a pure sinewave inverter built in. What I dont know is how it will perform continuously. Another thing to think about is that it has a built in charger so if you want to plug it into the wall it will charge itself up and your solar or wind will have nothing to do just like th inverter I showed on the bench. That is one of the main reasons I chose the two inverters on the wall. I wanted to have the inverters on stand by with out charging thats what my solar and wind is for.
Thanks Micael
ohh does it charge the batteries too??