If Not Fronius or SMA, Alternatives Like Volt Spirvent, Elnix Elektronixa, Zeversolar? Opinions?

I am interested in the opinion about less known / cheaper inverters on the market,
for example "Volt" Spirvent, "Elnix" Elektronixa, Zeversolar etc.
Someone may use something similar? Possibly knows where you can find some opinions?

I have a Fronius and it is reliable.

Lisciasty wrote:

"Volt" Spirvent, "Elnix" Elektronix, Zeversolar etc.

It's a lower shelf.

And some development of the phrase "lower shelf"?
I am asking for real.

Lisciasty wrote:

And some development of the phrase "lower shelf"?
I am asking for real.

You just have inferior components inside these inverters, the production cycle is different, the control cycle after production, etc ...
This applies to all electronics, not only inverters ...
For example, SMA produces the latest inverters in China, when you search the net, enthusiasts from Germany compared the older model with the newest one, they compared what they are made of, the conclusions are that it is not what was produced in Germany anymore ...

Zeversolar is a subsidiary of SMA.
I have 6 kW with a heat sink from May, it runs smoothly.


Generally, it's hard with opinions.
You can find some single ones after reading http://www.pvforum.pl/inwertery-f10.html, there is not much of it.
I have not heard or read about any of them breaking down remarkably, because there is generally nothing to break down there, well somewhere I have heard that those with fans can be heard and the windmill itself can fall.
There are also no comparative tests.

cuuube wrote:

Zeversolar is a subsidiary of SMA.

This is a Chinese inverter converted from Ever Solar.

Today I installed Fronius for my mother-in-law, it actually looks nice and everything is well thought out, much more pampered than my Growatt.
I am trying to find an answer to the question of whether it makes sense to install our native inverters. They are so a bit in between with prices in between
higher shelf and cheap Chinese food. And theoretically, it is easier to contact us in the event of a service or problems.
But it will probably be difficult to find opinions on this topic ...

China has gone up with quality, I prefer to buy Chinese because it is better quality than ours.

I confirm, I have a 3 kW hybrid - you can easily load 4 kW, and the maximum load I saw is over 8 kW, but only in peak.
Below is an example chart from one day ...

prose wrote:

China has gone up with quality, I prefer to buy Chinese because it is better quality than ours.

I think I was unlucky and all the Chinese inverters I had in my hands looked nice from the outside and inside, very poor quality of assembly and poor quality components ...
It is true that I only had about 10-15 pieces of various Chinese inverters, so that is not the whole picture of the market, but ...
You can find Fronius or SMA models at auctions and they are 30-year-old fully functional, I wonder if the Chinese will reach halfway through this time ...
The quality can be assessed by dismantling the inverter and assessing what it is made of, or let's say after 10 years of continuous trouble-free operation ...

Leon444 wrote:

I think I was unlucky and all the Chinese inverters I had in my hands looked nice from the outside and inside, very poor quality of assembly and poor quality components ...

I am just undressing and I saw what Chinese and Polish look like. Fronius or SMA are incomparably, I have 2 Fronius and 1 Chinese.

I had just started from Italian inverters through Chinese to Fronius and SMA, now I have three SMA and I will not exchange it for anything else ...
I have never had a Polish inverter, so I cannot comment on this issue ...

I used to dismantle a few inverters and repaired a few. These were the old Deltas and Danfos. I can confirm the excellent quality of the items.
For example, the thickness of the cables inside, capacitors for voltage much higher than on the plate, for high temperature operation.

Personally, I use an older type Fronius IG40 and it works beautifully. I have seen the use of IG20 for less than PLN 1000, so for a small installation it is a good solution.
For a slightly larger set, I would risk this Elnix. There is a separate topic for this inverter, where my colleagues did not leave a dry thread on it, so I would not like to develop the discussion here. I just see the producer growing. After all, you can see the device on their website, nice diagrams and explanations, and the last slanderous videos on yt are from two years ago. Of course, it has a lot of disadvantages, but there are also advantages. The worst (maybe best) is that I visually like this horrible box.

Yes, I know this Elnix topic, generally not very substantive, so I started a new thread:>
Anyway, I'm going to try different equipment, but when I take it for myself or my friends, I can always
it is to embrace when something happens. If something starts to happen to someone else or who is still living in, this is already a problem
logistics and cost ...

As for the elnix, it's a TRAGEDY. A colleague was assembling at home, the first one walked for 3 hours and got out, the next one had such disturbances that it is a pity to tell and the third one was already fronius (at my insistence) and the problem is over! This is equipment that is to work for many years, according to there is no unnecessary risk for me here.

Spirvent blew me away. I wrote via the contact form on the website, I also sent an e-mail to the merchant's mailbox. No response.
There are also no such inverters in solar wholesalers. Maybe it is some money laundering or an empty shell for EU subsidies? :>

And what about the twerd company from Toruń, apparently very good.

When it comes to Chinese inverters, Growatt is a good choice.

I only recommend Polish ale. It's a pity, because Spirvent also ignored me, he wanted exclusivity, and when he sent the prices, it was much higher than Fronius, but I am pressing to lower the prices. Twerd also has a very high price, but it is focused on specific customers and now Elnix competes with it strongly in inverters for wind or stream turbines. Elnix followed the path of ABB and Twerd some strange in the current control of windmills and not with every turbine. It is interesting to do on the turbine market because Elnix already has inverters up to 40KW, including cascades 15 / 25kW, and now I am preparing for PV. I wonder what Twerda's answer will be. Spirvent is also already preparing higher power of inverters, but only for PV, and they are much better than the Chinese ones.
It is getting interesting among Polish producers.
No Growatt or any other Chinese. Only Polish and give the boys a chance to develop so that people in Poland have jobs, not only in China.

That's right, only Poles have to try harder, even when it comes to accessibility.
Note that there are not many opinions about domestic inverters and the auction portals bring in stimulants from the west, Kostale or Chinese, etc. What do you think the interested party will buy if Polish inverters cannot be sold for even one unit?

You are right, but how can they try to boycott Polish products when companies importing Chinese equipment? I talked to traders from Spirvent or Elektronix, companies importing Chinese equipment do not even want to know what they produce and do not know this equipment. Tverd had a large network of sellers. When the Chinese market entered, they left it and many I knew from its distribution now say, we already have Chinese and now Twerd sells its products itself. See what large wholesalers sell - no Polish equipment and they do not want to know it. This is the promotion of the Polish industry. That is why it is worth calling and writing directly to manufacturers and buying from them directly.
At least it will be cheaper, faster and more reliable!

If Elnix had passive cooling like a normal civilized inverter, I would gladly take it. But the windmills? Err ....

Again buddy Leafy, stereotypes and lack of knowledge.
Now, inverters with active walking are new on the market.
Some knowledge: I recommend Article:

https://magazynfotowoltaika.pl/spis_tresci_3_2017/
Why active cooling is better for PV inverters.

As in the case of chemicals or even chocolate, the West sells us antiques and they use other inverters with active cooling.
For example, Fronius.
http://www.fachowyelektryk.pl/technologie/odnawialny-zrodla-energii/2109-d Why-chlodz-aktywne-jest-lepsze-w-falownikach-pv.html

So Fronius introduces active cooling to its market because it has many advantages.
Like for example.
-Lower maintenance cost over many years - virtually no need to perform service activities,
- Easy to install - the inverter is smaller and lighter.
-Increased safety of operation
- Greater energy yields.
And the most important
- Longer service life of electronics due to lower temperature of inverter components.
Elektronix already has active (intelligent) cooling and only now is Fronius introducing it. Another point in favor of Polish equipment.

Witek, what you cited are sponsored articles, in such you can prove everything.
Too high temperature for passive cooling or the need for cleaning every 6 months, I do not agree with that. There is nothing about the working conditions (building or outdoor).
For so many years the inverters have operated at maximum efficiency with passive cooling, and it worked. Producers wanting to lower the price add to it an ideology of efficiency and reliability.

In that case, ask Fronius why he sells new products with active cooling and tells us that passive is for us on our market.
This is Fronius' opinion about the advantages of active cooling, not of Elektronix. Elektronix has long introduced active cooling. And please, they 'got' again.
Intelligent active cooling temporarily consumes about 1W of power for a short time, and how many benefits.

Active cooling is an ever-present trend of material savings. Instead of a heavy aluminum heat sink, we have a few pieces of bent steel sheet or a small piece of alu.
In return, we get moving parts, prone to failure, and probably filters to be replaced from time to time (how can an active heat sink break down?).
What IP does this actively cooled Fronius have? Will IP 65 cope with passive cooling?

The heat sink can break down by being killed with dirt, but why the manufacturers themselves prohibit the installation of their buckles in a dirty environment?
Since it is impossible to install in a dirty one in a clean one, the problem of a dirty radiator does not exist.
My clasp has been hanging in the boiler room for over 1.5 years and, apart from a few spiders, nothing is wrong with it. The fact that it was heavy, but still on its own without help
I hung it on the wall so the argument that the heavy inverter is also weak. Nobody wears it, only hangs it once and forgets about the matter until the end of the world; P.

After all, I am tempted to give Elnix a chance, if I find an installation in the vicinity to keep an eye on it, why not.
Thank you to Spirvent for ignoring the customer.

Anything else there is noteworthy, domestic production?

I installed the first old passive cooled inverter connected to cheap oelmaier amorphous panels, I also bought a new Elnix with a mains heater, I still have some old Sma - one three-phase inverter does not ensure the reliability of the system. I have a comparison -Elnix- tragedy of disruption two warranty repairs loud-active cooling = cost cutting- ended as an inverter for a heater in a boiler German old inverter are like old Mercedes with Polish Polonaise you can drive it, but how ........

Lisciasty wrote:

...

do you live in Wrock itself? Have you heard about it https://www.wroclaw.pl/biznes/miasto-stawia-n...energii-zwolnienia-z-podatku-od-nieruchomosci