diy solar

diy solar

Recent content by magnet creek

  1. M

    Voltage detector for starting and stopping generator

    Tim, The "start- stop behaviour" is actually exactly the way it is described in the manual. See below screenshot from the manual. I am curious as you seem to not have this issue in your setup. Did you somehow change the settings?
  2. M

    Voltage detector for starting and stopping generator

    Tim, They do indeed have different settings for Open Contact Activation and Deactivation. My units is a SPF10000T ; Those are settings 12 and 13 and they are set at 40% and 80% (I have a LI battery). This Inverter starts the generator nicely at <40% SOC, but as soon as it detects AC input (as...
  3. M

    Voltage detector for starting and stopping generator

    I have the same issue. The Open Contact in the Growatt Inverter Closes nicely at below 40% SOC LI, but opens right back up again as soon as there is power detected. It is Shocking that a mass market product has a clear error in the programming , I mean it is even in the manual: Its agravating to...
  4. M

    Growatt replacement coil parts.

    I just had one of my Growatt SPF 10000 Inverters quit. A couple of months out of warranty. There is a short in on of the "coils"; I'm not sure if that is the right term but the 2 large transformer coils that are basically do all the work. I think I put to much load into it I guess and rather...
  5. M

    Water Heater 110V or 240V?

    I am looking for an Electrical water heater. Just need it for a shower so 20 Gallon or even less would be OK. I am powering it from a 10kW Growatt SPF with 2x200ah 48V LiPo batteries. I don't think I need quick recovery time per se. Would it be better to go for a 240V option or would a 100V...
  6. M

    Protect Growatt from freezing

    My 10kW Growatt inverter shuts down every night; presumably because of Low temp. The last recorded temp on Solar Assistant is just below 2.5C I have the batteries on heating pads, but if the Inverter shuts down the power generation I lose the heating pads. I tried connecting the heating pads...
  7. M

    Can Solar Assistant control Dry Contacts on (Growatt) Inverter?

    Yes, But not connected and only one is running SA
  8. M

    Can Solar Assistant control Dry Contacts on (Growatt) Inverter?

    I am not getting nearer to any sort of understanding of how my Growatt inverter actually works it looks like. If I look at the Screen on my Inverter the settings that should trigger the Dry Contact are #1 SBU #12 40% #13 80% If I look at the Inverter Config Page in Solar Assistant, it shows...
  9. M

    Dry contact Port (DO) on battery , any idea what they are for?

    Never "played" with BMS tools, can you assign certain signals to the dry contact in BMS tools?
  10. M

    Newbie needs help re: pumps for two water sources

    I'm not sure if I 100% understand the full setup of your system but pumps are pretty simple. You power them with 240V (mostly) (Sure you can use 120V or DC even, but from what I think your setup is, you are going to need 240V) and they pump. I use VEVOR 3HP deep well pumps in a barrel to pump...
  11. M

    Dry contact Port (DO) on battery , any idea what they are for?

    I understand the concept of Dry Contacts, it's basically binary code :"OPEN"-0 OR "CLOSED" -1. So with 4 terminals on the server rack battery , you can basically create 16 "messages", or communicate different states. I wonder if somebody knows what these messages are, I assume they are...
  12. M

    Water pump run-time limiter

    Kudos for solving this "problem", before it was an actual problem :) Where is the water from the stored water tank coming from? Are you bringing it in? In that case I understand you went as far as figuring out this 15-minute cap. I have a similar situation, but I am pumping water from a creek...
  13. M

    Dry contact Port (DO) on battery , any idea what they are for?

    My Sunpal 48V 200ah Batteries use a PACE BMS that has 4 dry contact ports on the front. I have seen them on a lot of server rack batteries. I have never used these contacts (I use the CAN connection to the inverter and the RS232 to connect to Solar Assistant) but I'm curious. I have tried to...
  14. M

    Best material to insulate batteries? Best R-value?

    The question is easier than the answer. The problem is (in practice) that by only looking at the material you overlook the actual enclosure package. I assume You are probably not going to enclose the front and therein lies the problem. In order to calculate the R value of the enclosure as a...
  15. M

    Growatt (SPF) Inverter Touchscreen vs Server settings

    The settings in the Growatt inverters can be changed manually by changing the values of the 28 menu options on the touchscreen. They can also be changed remotely by logging into the server (https://server-us.growatt.com/index) and accessing the settings via the wifi datalogger (if installed)...
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