Yea, the house will take the higher voltage. But, the grid voltage did fluctuate to a little below 260V, and still the inverter did not output AC.
The fact that the inverter is configurable to over 270V, I would have expected it to be capable of outputting in the 260s at the very least.
E.g. If the grid was 262V, I'd have expected the inverter to be outputting 265V (or thereabouts), and hence it serving the house load.
Unless there is some other config that I didnt set/can't find...
Careful there lads. ESB threshold is 230v +/- 10%, meaning that they can supply electricity from 207v - 253v and be withing limits. If they are sending you electricity over that, that would be something to get onto ESB about.
The issue is if they are sending say 260v and you then come along and your inverter pumps out 262-264 or whatever it ups it by, the equipment in your house now (and potentially your neighbours) could be consuming that out of spec electricity. Most electronic usually have some threshold, but it could burn out things.
So while upping your voltage on the inverter solves your problem of the alarm, you could be creating a bigger problem for yourself (and neighbors when you export)
We're in a similar boat. Datalogger wont connect to the app, and the inverter gives these over voltage warnings and wont work.
The inverter is now off and the installer is coming back early next week to add the batteries and replace the inverter. All this is due to being grid tied. If I could go off grid I would in a heartbeat. None of this messing.
I suspect that the incoming grid voltage being so high means that it's taking that for the house instead of the PV generation. PV gen needs to be slightly higher voltage than the grid in order for the house load to be covered.
Is anyone changing the Grid Over Voltage settings on their Solis Hybrid?
We have had high grid voltage here today (261V - 266V). It rose immediately, and has yet to go down.
I had set the Grid-Over-Voltage settings on the inverter to 269V (see image below), and this has made an improvement on how the inverter works. Previously (when inverter was set to 253V) it would cause an inverter alarm, taking it offline for 5 mins or so: no PV generation, etc.
Now, whats happening is:
Anyone know if there are any other settings that need to be changed:
Here are the ones I changed already:
And these ones cannot be changed:
(note, this question is on the inverter settings. Reporting to ESB NW is a different thing)
Thanks
Anyone in Rush/Loughshinney seeing grid over voltage alarms this morning?
Alarm was over an hour ago and grid voltage still showing as 255v...
Thanks @bullit_dodger so the highest I've seen my 4kw system generate is 3.2kw, going by what you said including the Lower 33% overage I could potentially add another 5-6 panels? How do I check the 600v value? I have an eddi and myenergi app.
The inverter size will tell you the maximum amount that an inverter can process. So a 4Kw will only "draw down" 4kw, even though you might have 5Kw in panels. However, for most of the time, your panels will never be giving you the max output they are rated for.
For example if you have 4Kwp in panels, you might be getting 2Kw in actual power. Increasing the number of panels (assuming same size panels and same orientation on your roof) to 5Kwp will mean that your inverter will now output 2.5Kw....as you increased your panels by 25% the inverter power will go up by 25% and you are still under 4Kw
Usually though there are some limits to how far you can "over subscribe" an inverter. 33% is typically about it, some people say 50%, and in addition to that, there are also some string voltage considerations that you need to be careful of on the inputs. Normally that is 600v, so if your existing panels are generating close to that, you won't be able to add more.
Is the maximum array size you can increase your install to limited by the inverter size? The inverter I have is a saj r5 4k s2 15, does the 4k mean its a 4kw inverter and therfore I couldn't increase from my current 4.1kw system without a new inverter?
It worked on the smart meter. Might be a while before I can compare though. Taking it easy due to back issues so don't think I'll be climbing into the attic. I'll see what solis say today but I have a feeling I may have to get the installer back.
Worth checking the smart meter ports with a smartphone camera... CMOS sensors can usually "see" IR.
Interesting, I get what you're saying there. I don't think it will work on my meter as it's one of the smart ones with an IR rather than LED port. Should be possible on the acrel. Other idea would be one of those LED readers and an IR one also. They don't seem the cheapest though.
Ok thanks, moving tarrif or supplier in October. Night rates dont look great at the moment due to higher standing charges and scary day rates. I'll leave battery on self use so. Might heat water with kerosene instead of immersion for winter(eddi installed), coz I dont see the point putting a bit of solar charge in battery just to power the immersion afterwards when timer comes on. Maybe it's all the same..
You'll still generate enough at times in every month to put into the battery so make the most of it.
Have you a night rate tarriff?
If so you can charge the battery at night, use during the day. Would be the equivalent of around 2 kWh free every day. Over say a 100-150 days of winter, that'd soon add up
Hi folks, does anyone have any suggestions what I might do with my 5.1kw Dyness for the winter? Should I leave it in self use mode?(SOLIS 6Kw inverter). Not too impressed with the Ev tarrifs now as they seem to hike the standing charge(bit sneaky). it's an east/west 6.6kwp array
I suspect the acrel meter or the run from acrel meter to CT is the issue.
Just to rule things in and out, try running house from grid tonight for a while (set charge current to 0A), get a stable baseload (everyone else in bed), and compare the instantaneous load readings on the acrel to the ESBN meter (using LED pulses).
I haven't tried the remote feature of this, but you could get the herself or one of the kids to stand at the meter box while you're up in the attic. 😅
Still nothing back from Solis support but at least they've reopened the ticket. I thought it was pretty cheeky the guy made the change and just closed it and said job done.
Looking at the data for the night of 1st Sept to morning of 2nd Sept, after and before generation this is what's happening below (in kWh).
I've had to put the Eddi into Stop mode at night as the export power is enough to trigger it.
Keep in mind that my battery is only 5kWh total so I'm not too mad about it dumping out each night. It seems counter to the idea of a hybrid system.
EDIT: last night was a similar story although I charged the car for a few hours with battery in "charging"... and it still discharges 300W! the export from generation stop to start was about 1.2kWh or about 25% of my battery.
would you mind pm of who you went with. I have a good few quotes but not sure who to go with .
I posted the job and got some quotes via https://www.bercert.com/
Was pretty reasonable from what I recall. Circa €200.
Anyone know a BER person/company they have used recently to get there solar systems inspected for seai grant?
Pm if you can please , thanks 😊
Long lead time but there’s SFA to be gained over Winter, install for April 23 will be perfect to hit the ground running
Took the plunge and placed the order with ****** Today.
14 panels, inverter and diverter fir running the immersion, not going with the battery for now
26 week lead time is the only stinger, so a long wait.
I think he's referring to an upgrade. He already had 10kWh and added another 10 for €1200
Brilliant, that worked Jonathan! Thanks so much.
Good idea for a business is a company that services/maintains PV installs done by another. I couldn't get anyone to touch my install with a barge pole as they hadn't installed it themselves. Total sh*tshow. I'm thinking of taking a course in this just so I know how to operate my own equipment.
€1200 for 20kWh have the prices gone up a lot on AliExpress haven't seen anything like that recently
Ah sorry, Adding another 2.4 was to the panels, not the battery !!! My bad
I had the 2kwh Pylon, selling that, have the LifePo up and running.
With the nightsaver "estimate" method I'm not really bothered about what I send to the grid, as little as possible hopefully.
Sounds like you have a Pylontech stack ???
You'd do well to go the 10kW DIY route and you could sell the Pylontechs and have money left over !!!
Very true mate - although it occured to me after my post above that now with FIT....having a high "self-usage" percentage means less than it did 12 months ago. Technically every unit you produce now is "self-used" in some capacity, as even if your exporting to the grid...your getting paid for it.
I've only the 10 myself with 3.3kw of panels. Adding another 2.4.
Always trying to reduce daytime load, not counting the EV we probably use about 12 to 14 per day.
