I've managed to find the same panels so going to buy them instead of chancing mixing them and finding there's some incompatibility - thanks for the advise though all.
Look at the spec sheet for the VOC voltage. Divide 600v by that to give the number of panels permitted on the string.
Do NOT just take your current DC volts reading, because particularly in winter sun, that voltage level will shoot much higher than in summer
So at 41v per panel, that would allow for 14 in a string. However, given that it's a dual string inverter, there may be a max amps level that you need to look at.
So overall, look at the inverter DC Input Specs and ensure that you do not exceed any individual item
Just ask your installer if its worth it. Not an answer but if I have an issue or question they are always my first port of call.
At the end of the day they are the experts.
Hi Jonathan,
Occurred at 12:55 and rectified at 13:37
EDIT: Will monitor the ac frequency in hassio and see how it goes.
What time was this at? Big drop in grid frequency at at 15:56. One of the big plants must have tripped out.
Similar thing came up on another discussion, Solis inverters (like most inverters) have a 600v limit per string.
Datasheet_RHI-3-6K-48ES-5G.pdf (solartricity.ie)
Each solar panel operates about 38-40V, and they are connected in series, so if you have 12 panels you are rocking about 456-480 volts already on that string. Your inverter probably has a PV Voltage telemetry. But you should be able to add 3 panels to that one safe enough
Can you go above 600V? Possible for very brief periods but I wouldn't exceed it much. (610-620V would be all I'd push it)
With the other string (your Peimar's) . I'd say getting panels to match the internal resistence is the key. Voltages should be ok I'd think, but I'd be interested to hear what others think also.
Had an error thrown up today - Grid Over Frequency
Wont know until I go home but looks like the power had been out for a period as I couldn't connect to any of the systems at home and looking at the solis online portal it would appear the frequency at this time was reading 0.02 whereas it would normally be 50hrz, assuming power outage would be reason for the error?
Wouldn't normally have too many blackouts but time to get the backup power socket wired up.
Anyone here expert enough to answer this one: I want to add 4-5 panels to me existing system. Currently I have 12x 340 Qcell panels on one string of my inverter - a Solis 5Kw 4G Hybrid. They are facing south but get shadowed badly at this time of year.
On the other string I have 7x Peimar 310watt panels roof mounted facing south west. I want to add 4-5 additional panels to this string. I can't get the Peimar panels so thinking of Qcell 350watts. I understand basic electrical principles and therefore that mixing the panels will cause some inefficiencies (as I can work it out, the 350watt panels will act as 310watt). That's fine with me!
All I want to understand is if I can safely add panels to that string. Inverter says it can take 11A+11A so I can't see it's a problem. But I'm getting contradictory advise from a certain supply company in Dublin. They say it's not recommended - but they can't explain why (or rather they bluster about DC voltage being too high but they don't seem to be able to explain where exactly these limits on voltages are).
Anyone?
That is the plan alright. Between home assistant and loxone most things are integrated into those systems so shouldn't be much work in setting up a few automations based on pv output.
With the myenergi products any excess can be diverted there for now.
Electricity Map uses ENTSO-E as the backend. The problem is that Ireland stopped sending data to ENTSO-E on the 23rd Nov for some reason.
If you want to fix, you're probably best off creating a new scraper based on the Eirgrid dashboard.
http://smartgriddashboard.eirgrid.com/
Already in process of switching to Avant. Cheaper than even the "green" mortgages. 🤔
What is your plan for the integration? do you plan on turning on or trying to get items to turn on if excess power is generated?
Now go off and get a green mortgage from AIB. I did and saved a shxt load. Had to move from ulster Bank anyway.
That will keep you busy over Christmas, down the home assistant rabbit hole😁
New BER completed. Now an A3 rating 😎
Did you have to piss on his parade, just let him enjoy the moment.
Cool thanks, just got my PV system up running mid October (and moved into my new build house) and I really want to get a better handle of my energy consumption and use my PV to the max. I have a Solis inverter but their online portal isn't the greatest.
Anyway Santa Claus is getting me a Raspberry Pi4 for christmas and Im going to dive into Home Assistant over the holidays so this link is great.
Not to be an arse but you don't have a 7.1kW system, your system will be limited to your inverter size, like most of us you are oversizing which is the right way to go, I'm 7.4kWp but a 6kW system, might have hit 6kW maybe for an hour tops over the last year
Looks great. Using HA myself. Pity the https://app.electricitymap.org/map has broken in the last couple of weeks to get non-fossil data. I had a look but no idea how to fix..
That's great. My 7.1kW system is currently being installed. I have home assistant setup already so will be good to get all data into HA.
For those running home assistant there is a solis integration and a myenergi integration that might be of interest.
Just playing around with them at the moment but should be good to integrate into the home assistant energy integration and pull various statistics and keep an eye on how things are performing.
Have updated the installed capacity thread with details.
Throw up a few pics when its done. Always nice to see the finished article
For those with newly installed systems, check that your system is performing as it should be (especially since output is so low in these months)
https://www.boards.ie/discussion/2058050685/
Single aspect, slightly ssw. Figured I'd get the extra panels fitted when the guys are here.
Nice work. 8kWp is a big system! Single aspect or E/W?
First day of install done, back tomorrow to finish off.
Aiming for 24 panels, 8.16kw to max out inverter.
Team arrived at 9 and started packing up when getting dark and just worked away, very tidy job so far. Just had to supply some boiling water for the tay and a few scones.
And it just done as it was told? Good stuff. I only have a normal inverter, and it's dark so my inverter is off 😂.
But this could open a world of automation for people.
Have not had problems writing to single registers with old firmware using node-red. Hopefully this has not changed in the new one.
Appreciate the comment. there is an AC coupled diagram from this page
https://images.squarespace-cdn.com/content/v1/5354537ce4b0e65f5c20d562/1516270403151-HW7WH26WU8V65JI1N3ZE/AC+Coupled+Solar+battery+system+diagram+v2.jpg?format=1000w
that I was using as guidance, and I thought someone here said to add a battery to an existing system with a hybrid inverter you would need to take a cable out of the consumer unit to the 2nd inverter (storage inverter). I would love to know how it can be done easier than that. (Of course I can't find the message now).
