Fronius IG Plus 2LT-2 6kW Solar Inverter Teardown

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Күн бұрын

Пікірлер: 24

@lukasaran45 5 ай бұрын

Hi, to be honest, i was pleasantly surprised when i saw that familar shape on the thumbnail ^^ I've been with Fronius for almost 10 years now, so the IG Plus line of inverters was already cancelled and replaced by the SnapINverter series when i joined, but i had my fair share of work with the components in the electronic manufacturing department, as it was sold with up to 20 years of warranty. The lower section of the inverter, that is missing with yours containes the AC and DC connection area and the system control board, as well as the display. 60Vdc are way to low, i would need to look at the datasheet again, but start up voltage should be around 250Vdc. Each power class uses the same board + inductor combination, it's numbers are varying, depending on the phase number and AC output power. There was a revision of the power board, you either have the older PINCI 1, or the more recent, backward compatible PINCI 2 board. The newer one can vary the power factor, as some DNO require a Q/(U) or Q/(P) control. If you want to make the INV operational again, i can send you the article number of the bottom section, you need a specific control board, called the IG brain (yeah, the pcb designers had the TV show (Pinci and the Brain) in mind 😅, when naming the boards), that has been programmed for a 2 power stage / 6kw output power inverter and the specific region. Ps: the conformal coating was dropped with the succeeding generation of inverters, as by then the housing was IP66 protected, so nothing stopping you there from salvaging some components! Best regards from Austria

@Kryptychon 5 ай бұрын

Thank you for the Insights. It's great to see such a design and build quality. For me it's art on it's own.

@KaizerPowerElectronicsDk 5 ай бұрын

Thank you very much for the insights! The PV voltage I stated as 60V is way wrong, I also noted that in video editing :) This inverter is not going to run again, I got no business case in repairing stuff like this.

@KaizerPowerElectronicsDk 5 ай бұрын

@lukasaran45 Could you tell me a bit more about the isolation / boost transformer? Why does it have triple parallel primary wires from PV side and only single thinner wires on the secondary side? Is it just built like a tank for very low PV voltages?

@lukasaran45 3 ай бұрын

@@KaizerPowerElectronicsDkHi there :) Sorry for the late reply, i might have overlooked the notification.... The primary side of the High Frequency Transformer has 3 inputs to cover the entire DC input voltage range of the inverter, the 3 relays next to the connections are for switching the DC input to the desired "section" of the HF transformer. So the output voltage on the secondary side is always the same Before passing over the relays, the DC voltage is "chopped" into an AC voltage with a frequency of 20kHz, if i recall correctly. After that, the voltage is rectified and fed into the intermediate circuit. Hope this explanation was helpful :) Best regards from Austria

@SatyajitRoy2048 5 ай бұрын

Beautiful construction and PCB layout

@barjan82 5 ай бұрын

Noic! This is possibly the galvanically isolated version.

@Alexelectricalengineering 5 ай бұрын

Wow, beautiful looking inverter ❤️👍👍👍👍

@KaizerPowerElectronicsDk 5 ай бұрын

Kaizer Power Electronics Design Award 2024

@Alexelectricalengineering 5 ай бұрын

@@KaizerPowerElectronicsDk Yes for sure 😁

@dmitriyv4557 5 ай бұрын

Thanks! Seems guys who designed PCBs had so many revisions, and so boring development and debugging of this stuff, that they even have added nice pictures, to make life slightly happier. ) Very cool HW!

@KaizerPowerElectronicsDk 5 ай бұрын

I think they just had fun, good old fun as fun should be haved! :)

@tuopeeks 5 ай бұрын

Nice build. Always think the p.c.b. designers are enjoying their work when they add art work. A team I worked with many years ago at Digital Corp. used to do this too.

@KaizerPowerElectronicsDk 5 ай бұрын

If we all remember to put a little play in our work, it lightens up, gets easier and everyone happier :) I try to add as many easter eggs as possible in my work.

@fogelmclovin6815 5 ай бұрын

Very cool, thanks for sharing!

@KaizerPowerElectronicsDk 5 ай бұрын

The sharing. I like to do it.

@Slesar. 5 ай бұрын

Сколько преобразователю лет? Что это за старинный дизайн такой?

@inothome 5 ай бұрын

I doubted the 230/400V but is actually is. So what the hell runs on 400V single phase there or an odd combination of 230/400 like that? Since from neutral to each phase is a 120 phase shift, if it was 180 it would be 230/460V. Or do some house get fed like that to split the loads across two phases and save on wiring in a third and the loads are all 230V?

@KaizerPowerElectronicsDk 5 ай бұрын

It just uses 2 out of our 3 phases. So there is still 120 degrees between them. All Danish houses are fed with 3x400VAC.

@inothome 5 ай бұрын

@@KaizerPowerElectronicsDk OK so what is the purpose of missing one phase if the houses are fed three phase? Are there any 400V devices or is this just to save on costs and run two 230V L-N phases instead of three.

@KaizerPowerElectronicsDk 5 ай бұрын

@@inothome Good question. I think it is an adoption from standard products to Danish markets where subsidies from government to solar panel owners was limited to 6 kW installations. Balancing the entire distribution system was properly not considered to be an issue, unless installers get directions from power plants on which phases to install it to.

@inothome 5 ай бұрын

@@KaizerPowerElectronicsDk Ahh, ok. That can make some sense of it. Thanks!