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Sunsynk (DEYE) Hybrid Inverters

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Comments

  • #212
    hexosan
    Registered Users, Registered Users 2 Posts: 1,728 ✭✭✭hexosan


    Any recommendations on panels to look at.



  • #213
    unkel
    Registered Users, Registered Users 2 Posts: 60,114 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/120492011#Comment_120492011

    Unless you are very restricted with space, the best panels are the cheapest panels per watt.

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #214
    SD_DRACULA
    Registered Users, Registered Users 2 Posts: 2,689 ✭✭✭SD_DRACULA


    https://www.boards.ie/discussion/comment/120491760#Comment_120491760

    You can't mix aspects on the same MPPT, Sunsynk have confirmed that to me because I asked them about it in the past.

    They have to be the same aspect and you have to have the same amount of panels (or max up to 2 panels difference) when splitting an MPPT.

    Now if you were to optimize all E/W panels and then connect them to the same MPPT I don't see why not?



  • #215
    Mr Q
    Registered Users, Registered Users 2 Posts: 1,085 ✭✭✭Mr Q


    https://www.boards.ie/discussion/comment/120492501#Comment_120492501

    I would have thought you could mix them on one MPPT, you definitely can on some inverters once the string size match. But if that's what they say it must not be the case for their models.



  • #216
    unkel
    Registered Users, Registered Users 2 Posts: 60,114 ✭✭✭✭unkel


    @SD_DRACULA - "They have to be the same aspect and you have to have the same amount of panels (or max up to 2 panels difference) when splitting an MPPT."

    Woot? And have hugely different voltages in parallel? Doesn't make sense to me.

    Having E and W identical strings in parallel on an inverter that can take 26A per MPPT seems fine to me

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



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  • #217
    SD_DRACULA
    Registered Users, Registered Users 2 Posts: 2,689 ✭✭✭SD_DRACULA


    image.png

    Just going by what they suggested which I assume is best setup but other things might work too, i.e. they say DO NOT go over 425v and I see mine at times go over that in the morning and no issue (yes it's 525v in reality)

    Won't E/W always have different voltages anyway?



  • #218
    unkel
    Registered Users, Registered Users 2 Posts: 60,114 ✭✭✭✭unkel


    Thanks for sharing, but they seem just to state text book answers. And they seem to interpret the one about the split in split over the two MPPT inputs rather than 2 strings in parallel on one MPPT input

    Also the spec sheet says 450V iirc (which is far lower than other similar inverters) yet the CEO has said on YT that 520V is fine too really

    I think I shall make up my own mind on these matters, rather than listen to dodgy advice. DYOR, YMMV, IANAL, etc. 😂

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #219
    hexosan
    Registered Users, Registered Users 2 Posts: 1,728 ✭✭✭hexosan


    €1300 ex vat for a 5.5kw Ecco hybrid does this seem like a good price



  • #220
    unkel
    Registered Users, Registered Users 2 Posts: 60,114 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/120599147#Comment_120599147

    Yeah I think Kelleher's list price is €1350 + VAT

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #221
    hexosan
    Registered Users, Registered Users 2 Posts: 1,728 ✭✭✭hexosan


    What’s the max panels the sunsynk 5.5 can handle per string. I’m looking at 14). 390w panels south facing



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  • #222
    hexosan
    Registered Users, Registered Users 2 Posts: 1,728 ✭✭✭hexosan


    https://www.boards.ie/discussion/comment/120609326#Comment_120609326

    And if the 14 panels have to be split into two strings is that the inverter maxed out or can another east facing string be added



  • #223
    unkel
    Registered Users, Registered Users 2 Posts: 60,114 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/120609418#Comment_120609418

    Depends on the panels. But you can't parallel strings on the 5.5kW (you can on the 8.8kW). Max voltage an MPPT input takes is 450V officially but Keith (CEO of SunSynk) has said on Youtube that it is 520V really. So if your panels have an VoC of 35V you could fit 14, if 45V then 11. And yes you would only use one MPPT for that so the other east facing string can go on the other MPPT

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #224
    graememk
    Moderators, Home & Garden Moderators Posts: 7,265 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/120609418#Comment_120609418

    14 is too many for one string, no matter what the VOC is.

    What panels are you looking at, what is the VoC of the panels

    The max voltage of the sunsynk is 500v afaik @unkel I think you said it's officially 500, but you can push the limit a bit, (on a sunsynk YouTube video?)

    Limit is likely to be around 10 per string.



  • #225
    unkel
    Registered Users, Registered Users 2 Posts: 60,114 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/120609487#Comment_120609487

    Answered above 😁


    BTW might as well post here, I've a complete system with my old Sunsynk 5.5kW plus 5kWh server rack battery put up for sale today, for a very cheap price, see here:

    https://www.boards.ie/discussion/comment/120608640#Comment_120608640


    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #226
    hexosan
    Registered Users, Registered Users 2 Posts: 1,728 ✭✭✭hexosan


    Looking at either 14). Recom 385w from solartricity or 12). Junkie Tiger Neo 420w



  • #227
    graememk
    Moderators, Home & Garden Moderators Posts: 7,265 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/120609585#Comment_120609585

    The recom are bifacial? Yeah VOC of 44v, 10 is your limit for a string.



  • #228
    hexosan
    Registered Users, Registered Users 2 Posts: 1,728 ✭✭✭hexosan


    I’ve only a bit over 7m in length to play with on the roof so I can get 7 of the 1038mm or 6 of any of the 1134mm wide panels.

    I’m leaning towards the jinko. It’ll be a 5.1kw array vs 5.4kw with the recom. But the jinko will be about €900 cheaper. That €900 will cover the cost of adding more panels on either my east or west facing roof.



  • #229
    hexosan
    Registered Users, Registered Users 2 Posts: 1,728 ✭✭✭hexosan


    https://www.boards.ie/discussion/comment/120609487#Comment_120609487

    The VoC for the jinko on the data sheet shows 38.95v STC & 37v NOCT. A string of 12 would be 467.4v would that fall within the 450v-500v mentioned. 



  • #230
    graememk
    Moderators, Home & Garden Moderators Posts: 7,265 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/120609822#Comment_120609822

    I'd be going for the 900 euro cheaper one, all day.

    That would be nearly 8 panels for east or west (I'd go west)



  • #231
    unkel
    Registered Users, Registered Users 2 Posts: 60,114 ✭✭✭✭unkel


    Yep agree with @graememk - cheapest per kwp wins!

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



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  • #232
    hexosan
    Registered Users, Registered Users 2 Posts: 1,728 ✭✭✭hexosan


    https://www.boards.ie/discussion/comment/120609910#Comment_120609910

    Yeah just typing it out here made my mind up on the jinko panels. I’ve two west roof sections, the easiest roof to do will fit 4/5

    are the 12 panels covered with a VOC of 467



  • #233
    graememk
    Moderators, Home & Garden Moderators Posts: 7,265 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/120610305#Comment_120610305

    Yeah the VoC of 467 is fine.



  • #234
    hexosan
    Registered Users, Registered Users 2 Posts: 1,728 ✭✭✭hexosan


    Looking at the install sheet for the inverter it recommends 1.6m off the floor and 500mm both sides and above the unit for air circulation. How warm does the unit run as I’d just be able to get 500mm each size but I’d probably be within 300mm of the ceiling. Area it’s in is on average 18/20° year round. With the batteries and inverter that will probably increase.



  • #235
    unkel
    Registered Users, Registered Users 2 Posts: 60,114 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/120610922#Comment_120610922

    Not sure why it says to have it 1.6m off the floor. The lower, the cooler you'd have thought. Obviously nobody is going to tell you to ignore the manufacturer's recommendation but if it was me, I'd rather mount it a bit lower and have more space on top. All the heat is coming out of the top. That said, it really doesn't get red hot either, the (loud enough) fans do a good job. And I have had the 5.5kW Sunsynk charging battery at max amps for hours on end last winter

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #236
    DC999
    Registered Users, Registered Users 2 Posts: 1,604 ✭✭✭DC999


    https://www.boards.ie/discussion/comment/120611361#Comment_120611361

    1.6m is to avoid people banging into it I reckon. But that matters not in an attic :)



  • #237
    unkel
    Registered Users, Registered Users 2 Posts: 60,114 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/120611681#Comment_120611681

    You'd need to be a dwarf not to bang into something that is 1.6m above the floor 😂

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #238
    graememk
    Moderators, Home & Garden Moderators Posts: 7,265 Mod ✭✭✭✭graememk


    Could be to have the screen at eye,-ish level



  • #239
    hexosan
    Registered Users, Registered Users 2 Posts: 1,728 ✭✭✭hexosan


    with the jinko panels the data sheet says max series fuse rating is 25a. I want to bring the panels in from the roof and before the inverter fuse each string and add a surge protector. So I assume it’s just a 25a DC MCb for each string. From that box an into a DC isolator and then into the inverter.

    does that sound about right



  • #240
    graememk
    Moderators, Home & Garden Moderators Posts: 7,265 Mod ✭✭✭✭graememk


    I dont think any of us has a fuse on any of our PV strings.



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  • #241
    hexosan
    Registered Users, Registered Users 2 Posts: 1,728 ✭✭✭hexosan


    https://www.boards.ie/discussion/comment/120613734#Comment_120613734

    Any reason not to do it. MCB’s are cheap and the inverter isn’t. If anything went wrong on the panel side I’d rather just have the mcb trip



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