inverter

100kwh-hunter

100kwh-hunter

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Mar 2, 2019
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So i am not even out of the "harvesting and testing" section yet.
But i would like some advice on inverters.

I would like to have an inverter that uses my powerwall FIRST.
If the powerwallruns empty/low it must switch on to the grid, and back on the wall when the powerall is nearly 80% full again
The continuous power consumption will be in the first setup 600w an hour 24/7.(pound)

Those ones of vectron seems nice, but won't do the job.(first powerwall and then grid)
On internet they do the job, but if you are in the store and ask them directly, they say its not possible, that they will charge also youre bank....from the grid.......
Whythe heck i wantthose solar panels for.......but oke.

There are cheaper mppt inverters(not pwm) i can buy 3 for the same money.

BUT i also have in mind to just buy a mppt controller and a off grid inverter that will suit my demand.
That off grid inverters are cheaper and more durable.
BUT (yes again but), they switch off when the power is low, and there is no more power to the pound.

When i was younger i had a schematics of a device that would swits between 230ac and 230 ac.
Just for the "must have/really want to haveback", does anyone have a schematic or thing like this.
I could not find it on the net, maybe i used the wrong words?
So maybe this will be an good solution?

Anyway i dont see the forest anymore due to all the tree's, like looking for wood in a forrest( i am a carpenter by trade)

Anywaythis jibber jabber reflects that i am really swimming in the dark.
powerwall must be drained first to 21v (3v a cell)max (24v system wanted to start with)
then get power from the grid, then when the powerwall is coming up again, cut off the grid and use powerwall again.
Is there such device in existence?

Any help and adviceis greatly appreciated, thanks in advance
 
The guys at the store are right in a way, the victron units do not have a solar charge controller but they do have a ac charge controller so if you only bought the multigrid or multiplus then it can only charge from the ac. You need to couple them with a victron mppt solar charge controller for the whole setup to work the way you want.

There's very few units out there that has all built in one, ie. solar charge controller, ac charge controller, inverter, grid-tie all in one unit. The chinsese branded ones like mppsolar are the only ones I know of that are capable of doing it.
 
Thank you for your replays.
However, as the victrons seems appealing, they dont match my demands, especially for that price.
If i want victron to meet my requirements it will cost me 1600e, and every 6 months an update(with i suspect an email to our big brother)
and i must buy a "first choice" switch, because they will load anyway my powerwall if empty.
I am not afraid to spend money, but he, if i can buy what i want that will meet my requirements aldo half of its giving capacity.....
I can buy 7 for the same money and achieve a lot more.

But the victrons, you can specify the voltage of you're load and everything else, except.....deplete my bank first and then use the grid....and leave my bank for what it is(~40-50%dod)......Victron won't do that, as perfect as it may seems.(lithium settings)
In a way Victron is perfect....if you have a boat or a camper or such small thingy, or you are really of grid, in between a big NO, sorry

Those pip's do the same, but for an 8th of the cost.
Aldo i can buy a separate mppt and inverterter, from victron (that will meet my recruitments) will cost me 1400 and no room for expanding.
Yes i did some home work(thanks again to both, really appreciated!), that's way my late replay.

With those pips i can go expanding.
For my first fase it will be a mpp solar, than expand, then a victron off grid device. if i accumulated enough cells.
Or leave it as it is and buy one for spare?
Panels, i dont think they going to be a problem, BUT still thinking.

More advice is welcome and very appreciated, with best regards Igora.


image_mepvql.jpg


perfect, i think(the umschaltstation), it's a simple relias??.,., f...i had a cheap and better solution and schematic somewhere,..... when i was younger.
 
100kwh-hunter said:
But the victrons, you can specify the voltage of you're load and everything else, except.....deplete my bank first and then use the grid....and leave my bank for what it is(~40-50%dod)......Victron won't do that ........


Click to expand...


Yes they can, self consumption/with battery life/pick your own DoD. Theres very little Venus doesnt do out if the box, if it's not doing what you want, as it's open you can make it do it :)
 
My victron inverter is doing this right now, it's a Multiplus model.
It powers my house 100%* of the time from batteries - I have it set to drop back to grid supply if the batteries are depleted.
You do this by settings in the "virtual switch" section.
The batteries are charged by victon MPPT chargers.
*It's only had to do this once so far, but did so seamlessly (wife & family didn't even notice). After a week of partly cloudy weather in mid winter, someone put the kettle on. When the kettle switched off, it cut back to the batteries, then sun came up, all good again from there.
 
View attachment 6View attachment 6View attachment 6
Hi,
I'm new to Solar installations and Im just starting to wire my 10 X 100KW PS Germany Monocrystalline solar panels to a 3KV PIP2424HS Hybrid Pure Sine WaveGrid Tie Inverter ( which I bought from Lazada ) and to a 3 X 200 AHr Panasonic deepcycle batteries. I use a WatchPower alternatively with MPP Tracker Softwares.
May somebody help me out onhow to connect the AC input and AC output to the grid, I mean will I connect the AC input to my breaker and use the AC output as an outlet just in case I need it, say for charging my laptop ? I have all the safety electronics like disconnects and appropriate breaker in between all connections and I've watched so many You Tube videos on safe connections.My goal is like all our goals, to charge my battery from the solar panels and use both or either solar or battery to reduce my utility bill which is the general use of this solar installation in the 1st place.
Your kind assistance please, even sketches or jot down base on your experience will do. Big Thanks in advance.

image_fahxvs.jpg
 
Ric said:
Hi,
I'm new to Solar installations ....
May somebody help me out onhow to connect the AC input and AC output to the grid, I mean will I connect the AC input to my breaker and use the AC output as an outlet just in case I need it, say for charging my laptop ? I have all the safety electronics like disconnects and appropriate breaker in between all connections and I've watched so many You Tube videos on safe connections.
Click to expand...

If you are new to electrical stuff, you really need to get an electrical contractor (electrician) to do this (should get electrician anyway!).

Read the inverter instructions and follow it.
See here:https://www.mppsolar.com/v3/pip-hs-series/
Have AC circuit breakers in mains input side.
Have DC breakers or fuses + isolatoron battery before any gear.
 
@Sean,

https://www.bootschappen.nl/easy-solar.html?id=167845724

So basically this one will do what i want, without hesitation or adaptation of the device itself?
Powerwall FIRST with charge and discharge and then SECOND if i got a wall without power the grid!

I can set the minimum voltage when he must switch to the grid and i can set a maximum voltage to charge up my bank?
I want him to use the grid if my bank is lower than 3.2 volts and stop charging (pv array only!)at 4.00 volts.

Is it also possible to let him charge first up to 4.00 volt (with pv array only!)after my powerwall has been discharged to 3.2v.
And then use my pw again?
Without using the grid to charge?

Thanks in advance
 
Perhaps I'm of a different generation, from back when knowledge and understanding was gained through lots of reading and often time consuming research of physical material -Janet made life easier, and made research far faster. Janet morphed into the global access monstrosity now called The Internet, whichseems to enable folks to gain short lived, non retained knowledge within a fraction of a second - everyone can be an expert as long as someone or Google feeds them the answers ... which I suppose is all good.

..... butfolks seem to have lost the willingness, or ability to do their own research -the ability to read a lengthy document and comprehend the content seems rather a retro talent, reading around a topic learning things you didn't think you needed to learn is an unknown concept.

.... everyone seems to expectto learn by being spoon fed bullet pointed info - which isn't so bad if you want to learn how to bake a cake.

@100kwh-hunter and anyone else who wonders why I sometimes come across as grumpy, please dont ask questions that you could answer for yourself having done just a little reading around the topic, even reading the FAQ or some old posts will help you...

I'm always happy to point folks in the right direction if theyshow some indication that they are at least in some part willing to do some of the legwork .....

https://www.victronenergy.com/live/ess:design-installation-manual
 
In my off-grid setup, I handle this by using Midnite Solar Classic aux1 relay to turn on/off my inverter at specific voltage range and then automatic transfer switches such as Go Power TS-30 (30amp) and Progressive Dynamics PD52DCVS (50amp with surge) so that my circuits in house are powered either from inverter or grid. For sensative circuits (computer, tivo, ..) I use an APC downstream from one of the automatic transfer switches to power a set of plugs. This lets me charge the battery via Midnite Solar Classic controller and control battery DOD etc by voltage range. The battery bank size (40kwh), the inverter (12,000w), and number of circuits - average/max power draw - are coordinated.

In the main panel case I have a tandem Progressive Dynamics PD52DCSV Transfer Switch Surge Protected automatic transfer switch powering a Reliance Controls Pro/Tran 2 - 30-Amp (manual) Transfer Switch - which lets me toggle on/off various circuits to adjust the overall load on that feed from the inverter.
 
@sean.
I am not picking a fight or whatsoever, or want to insult someone.
I want to thank you for your compliment, that you think my (technical) english is very good.
I am not being sarcastic, i really see this as a compliment that you think my english is that good.
But unfortunately my english is not that good, that's why i have those questions, cous some things don't want to sink in.
Aldo i reread some pieces THREE times, it just won't sink in.

The power of learning is repeating, and read it all, no i don't want to have a tailored answer or pre chewed answer to my question.
Then you would end uphavinga working system and you don't even know how it works, and what if a problem occourse?
That's why i keep on asking questions, cous indeed with the internet of today, you can get the info with the speed of a bullet, but what does make the bullet fly? and why, and how, how to obtain accuracy/hit the target.
Hit a target at 10 yards or you want to be able tohit a target at 1.4 miles?
My old fashioned library contains 12.000 PAPER books, i like to read not to collect books

I don't see as grumpy: i see it more as a very polite rage.
Hey at least you where proving human:).

I apologize for my lack of technical english knowledge, and want to have some reinsurance before i spend hard earned money.(2000 euro)
I did not wanted to offend someone, that is not what i am here for.

Thanks for reading

@OffGridInTheCity.

I was also thinking about the option to do something with relais.
Something called pre choice switch, very simple to make.

Seems to be a nice device, i will dug in to that one.
Thanks
 
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