Why should you care about back end supplier issues when it's sold as "EG4" inverters? Do you accept your Tesla not working properly if they chalk it up to a supplier problem out of their control?
Of course there are people running grid-tied inverters off grid but as some have explained they use a hybrid inverter and batteries as the grid forming inverter to activate and more importantly curtail/disable grid-tied inverter power via frequency shifting as needed. The hybrid inverter and...
UL9540A is a part of the UL9450 standards for ESS. UL9540A is a test method/report for thermal run away performance of ESS including its BMS, cells, etc. UL9450A does not get the battery cell a "listed" mark. Only stand-alone products can get "listed" in general.
Review tests should definitely include a significant but common non-linear appliance load like a microwave oven. Especially for HF split-phase inverters the test will show performance and power quality with phase imbalance. Many inverters have good power quality with no load but degrade...
It's a common symptom of poor/slow inverter voltage regulation response to non-linear loads. Adding inductors with capacitor to the LED circuits can help. But it might be cheaper/easier to change the LED's.
First, Encharge and most other home battery systems do not guarantee no device/computer reset whenever the grid goes down. It may happen depending on the where the AC power cycle is when the grid goes down but it's not guaranteed. It's an inherent limitation of all line-interactive backup...
It's better in terms of the actual metering HW and open source SW. It's capable of higher accuracy than Vue and not limited to cloud only monitoring. Vue uses a microcontroller for signal sampling at lower resolution and sampling frequency. Vue bundle is certainly cheaper at high number of...
The short answer is no. It wouldn't work in the DC case either when you have a current source that will raise voltage as high as it needs to push power.
Tesla Powerwalll maybe similar in the sense that it can't start up with drained batteries even if there is solar. However, Tesla is probably different in that it won't allow charging drained batteries from a generator. I don't think Sol-Ark or any other hybrid inverters have such restriction.
Really? Why would they have docs with instructions for setup in the US?
https://www.deyeinverter.com/deyeinverter/2020/12/29/502012022%E3%80%90a%E3%80%91%E5%82%A8%E8%83%BD%E5%8D%95%E7%9B%B8%E8%AF%B4%E6%98%8E%E4%B9%A6sun-5-8k-sg01lp1-useu-ver2.0-deye.pdf
Once a profile has been successfully installed it's stored in the Envoy. If you have installer access to Envoy then you can reapply the profile at any time without Internet connectivity.
Good thing Enphase came to their senses. It's likely that telling affected customers to buy their batteries just pissed off the customers and didn't increase battery sales much.
The new LCD looks good. The assembly is pretty easy especially for experienced DIY. The officially supported local control interface is much less brittle than a reverse engineered interface without official support for any long term system.
iQ8 is certainly faster but not that relevant to the AC coupling issues being discussed. The main AC coupling issue in an island grid with iQ8's is the lack of full initial sync and power ramp up with the grid-forming inverter (GFI). It happens well before there is excess power beyond the load...
Hard to see how they are generally practical. The reviews never show how you actually move and lift one of these for indoor setup in the dark during outages. The marketing often shows them already setup sitting in a large empty kitchen. I doubt most people can just leave one sitting in a kitchen.
I agree it's current delivery limited but I think it's very much due to some fundamental differences between LF and HF architectures. Specifically, I think the issue is that balanced dynamic current sharing through the components in the inverter power chain is more difficult in the HF...