I read the "NOT compatible with AC coupled systems" as either:
Does not work on a basic grid-tie inverter (non-hybrid), as there simply is no way to connect batteries to them
Incompatible with many commercial non-48V grid-tie/hybrid systems in the market, as they require 300V battery banks.
In...
It's related to the MPPT trackers. Basically what is happening during these early morning scenarios is open circuit voltage will initially measure beyond 140V, which turns on the system. However, right when the panels experience load with very little sunlight available, there will be a voltage...
The PV connections are decent. Not as sturdy as the connections on the SunPower (ABB) inverter I replaced, but they still feel secure. At least I didn't have to fight with the terminals to get them open, so that's a plus ;)
My system is quite small compared to many others on this forum -...
Case is steel (magnetic)
Could you let me know which firmware yours came with? My case is completely unbranded. I’m wondering if there are any differences, firmware or otherwise.
I've been using Solar Assistant with my GSL inverter for a few weeks now. By default, Solar Assistant will pass through battery stats as provided by the inverter. When using it in this way, the battery does not need to be directly supported by Solar Assistant. However, Solar Assistant...
Bad press? Please share. I'm curious to how a few negative experiences represent the product as a whole. As for myself and quite a few others, I have nothing but good things to say with all things considered - *especially the price*. Is a Sol-Ark 15k better? Probably. Does it justify 2-3x...
This morning, I noticed my inverter relays were clicking on and off every few seconds. I don't really spend much time in the garage, so I haven't really noticed it before. The fix was simple - increase Vpv so the inverter does not attempt to pull power from the panels when not enough sun is...
I'm grid-tied, and aside from some extremely non-intuitive settings I've had to discover, no problems to report.
Main use cases (all successful):
Charge batteries from PV first, but only before 4PM (peak period starts). When batteries are full, send excess back to grid.
Zero export between...
I don't think anybody here was downplaying your contribution, or claiming your efforts were trivial. Though, I hate to be the one to point out that it seems this is exactly what your are claiming in regards to syssi's "simple serial reading" work, yet still valuable enough to start your repo on...
GSL is the OEM, LuxPower is the ODM. Similar to how Deye is the ODM for Sol-Ark (and others).
If unfamiliar, here's a very simplified explanation:
ODM: Original Design Manufacturer. This is the company that basically creates the reference design, often sold to other OEM's as a "white label"...
I am currently using an isolated 48V => 5V DC-DC converter. Search for VRB4805S-6WR3 - This part works perfectly for me. I avoid non-isolated converters for this amount of drop-down, as a component failure (transistor or oscillator) will send full pack voltage to the ESP32, and potentially to...
What URL are you using to access SA? If it is the 'public' one, obviously it will not have any data to relay if the internet is disconnected for whatever reason. Have you tried accessing it via internal IP?
No major issues discovered so far, though I am still tuning the system for my use case.
Build quality seems to be very good. No "flexing" of terminals when tightening down connections. And yes, they definitely will support large gauge wiring - the main GRID/EPS terminals use a 17mm socket...
You can, and even easier if you flash ESPHome to it, assuming you're already running the Home Assistant ecosystem. I do this with a similar device. Just be aware - some are able to read voltage state, some cannot. I have not yet done the research to see what this particular device is capable...
Re: GSL compatible batteries - it's a BMS thing. While I was working out a converter for my JKBMS, I set the GSL to use lead acid. Not ideal, but works. Now I have a protocol converter setup, my JKBMS communicates over Pylon, which the GSL inverter does support. Without a doubt, this is 100%...
I completely agree with everything @fromport has already mentioned. It is also highly unlikely (aside for a one-off defective unit) for the GSL inverter to backfeed during a grid-down scenario for not just one, but multiple reasons I won't get into here.
Here's an out of the box thought for...
Good point - I can test this tonight as my whole house metering does report power factor. I will need to shut off every other breaker in the process, which should be fun... I might as well label my breakers while I'm at it.
However, I do notice an average change of ~200W+ (pf already accounted...
I understand the intent, though behavior will likely not be as expected at best, and potential damage at worst. From what I understand about the inverter internals so far, the only difference between the generator and grid port is which way the internal relay is flipped. If you want the GSL...
In some cases, GEN ports are physically incapable of bridging itself to the grid, as there is absolutely zero reason to do so, and it brings in major safety concerns. Furthermore, it is unclear on how this port will interact with the inverter when it comes to UL1741 features - in a grid-down...
Hey @fromport - you're exactly right! Very interesting measurements from my initial test...
All breakers on:
Real power: 581W
Power factor: 0.63
Apparent power: 933VA
Phase angle: 317
Clamp meter on inverter L1: 1.09A
All breakers off, except inverter and router circuit:
Real Power: 120W...
To put it simply, modbus meters produce a digital signal (meter tells inverter: you're using xxx watts), while CT clamps produce an analog signal (here's 20mV, it's your job to determine how to convert that to watts). The GSL(/LP) inverter supports Eastron Modbus meters as an option in place of...
Ok, so I'm a bit disappointed. Went down the route of simulating a modbus meter to the point where the inverter recognizes it and produces no errors. Packet captures look clean. However, no matter what I try, reported power is always 0W. Why? Engaged support for more information on what...
From the Luxpower user manual, "Fast zero export":
Feed-in Grid: is for users to set zero export function. If exporting solar power is not allowed, users need to disable “Feed-in Grid” option. If users' utility meter will be tripped with even a little solar export, “Fast zero export” can be...
For what it's worth, I'm also still on the original firmware. However, I'm probably the only one not using their CT's. Being the impatient engineer that I am, I just built my own solution after support basically implied there was no current support for any split-phase compatible modbus meters...
Now this is what open source is all about! Thank you for your contribution! Do you plan to fork the repo in github?
Also, it's great you have an isolated DC-DC converter module explicitly listed, fused appropriately on the input.
I mentioned this in another post, but as a reminder to those...
First, I'd like to echo the same gratitude in regards to uksa007's original contribution(/improvement) as an open source solution. Open source is NOT at all about money, patents, or copyright. It's about contributing to an idea, bringing it to the next level, and sharing how it was done with...
I am grid tied, but only have a few circuits on a 50A breaker'd CL panel passed through from the EPS port. For all intents and purposes, behavior of circuits on the CL panel will be identical to a full 200A passthrough, just at a smaller scale.
Do you have any specific questions or concerns...
Are you able to confirm if voltage is present on the grid terminals when the grid is disconnected? Curious to how you determined the grid was still connected, as it would typically (not always) appear as a dead short during a grid down scenario.
This was the first thing I tested when I...