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Everything posted by FixAMess

  1. You MUST NEVER SAY THAT! The Victron die hards will crucify you....They're still stuck in the dark ages...The big plus for Victron is remote control which hopefully will be available soon for the sunsync, then there's no reason to go Victron if you are comparing price/functionality across the 2 brands...
  2. I have a Goodwe, BUT if i had a do over I'd go Sunsync...
  3. It sounds like the BMS has shut the batteries down because you have taken them too low. Set the minimum SoC to 20% (DoD 80%) and see what happens. There is an inverter setting that allows depleted batteries to be recharged, set this and see what happens tomorrow.
  4. Did they tell you what the problem was, and was it specific to LG battery?
  5. Limiting the discharge current on the inverter side is a really nice feature to have!
  6. A bit of a side question, Will RIOT work on any battery, I'd like to get accurate in/out power on my pylontechs?
  7. There is a discussion about this somewhere. IRC, the limit refers to the feeding back into the grid. If you disable (by software) or hardware limit the feedback it may not exceed the figures you have quoted above. So a 8kW inverter is acceptable as long as you limit the grid feedback. There is a list of inverters which CT finds acceptable, the inverter youo chose must be on this list. I'm sure more CT people will confirm/reply soon...
  8. Here's the software; https://www.dropbox.com/s/r97brpq9f3vflg2/BatteryView.zip?dl=0
  9. If you read their warranty, irrespective of the 5 or 10 years it only warrants that its good to 50% capacity up to 3000 cycles...So after 3000 cycles (irrespective of time, at 1C) they are happy that it will still have 50% of rated power. In contrast the Pylontechs warranty, specific to SA, warrants 10yrs to 60% (if you don't register your batteries with them you only get 7 yrs but its to 70%) of original capacity. BUT the Pylontech warranty point 5 , says must use on "daily cycle basis", what does that mean? It MUST be cycled daily or it can only be cycled once daily? Otherwise the warranties seems to have the same "non abuse" clauses etc.... Pylontech product warranty-US serie V1.1 SA20WS7055 South Africa.pdf
  10. Hi CEF, it looks like the Battery DoD on/off grid figures are not correct. Otherwise, at a quick glance, all looks good so far!
  11. So I checked my battery versions; I see there is a software Version as well as a boot version. Youngest Battery is 2.5 and 2.0 boot version (Dec 2020) All others are 1.3 and 1.4 Boot version. (2019) Will let sleeping dogs lie and not upgrade.
  12. Has anybody seen any real benefit to the upgrade? I'm hesitant to play if there's nothing wrong with my batteries.
  13. What is the impact of having an 2 strings (7,6) that differ on the 2 available MPPT inputs, 1 for each input?
  14. What is the correct update file for USB3000A, is it the same as the US3000B"?
  15. What size/ cost would a heatpump be to heat a geyser? How does one determine the specs required?
  16. If I were you, I'd buy the 8kW inverter and offset the price difference vs the 5kW by buying fewer panels now with max power available to match 8kW inverter....Gives you a long term growth path.. I have a maxed out 5kW inverter, panels to max allowed..To upgrade I need a new inverter...$$$$$!
  17. You should charge the 2 existing batteries to 100% then disconnect them from the inverter and charge the new one to 100% by itself. Then join the 3 batteries in parallel, switch them on and let them equalise for a day (but not connected to the inverter yet), then connect them to the inverter and discharge them to 50% and recharge...Over a few days the batteries will equalise. If you dont do this the batteries will all be at a different state of charge and you will pick up errors on charging.
  18. Here it is; https://www.dropbox.com/s/sng0rotu6pjjk78/BView.rar?dl=0
  19. You can leave it on but theres no point if you are only taking your batteries down to 80% DoD. Have you got batterview.exe to look at the state of your batteries? You will also need a special cable to link your pc to the batteries. You can then go look at the errors, issues with each battery on a cell level....
  20. As per the guide ; "Battery Activated: Used when lithium battery switch off because of low voltage. But for some battery like LG, should switch on battery switch manually first."...This is to recharge depleted batteries. Are you sure you are not taking your batteries too low, try a DoD of 79%, SoC 21%, then see if the batteries still turn off? They are only supposed to go to 80% DoD under normal operation.
  21. Very nice software! Well done CEF, it really does provide a much more granular view of what's going on with the system. What is also interesting to watch is how it switches from PV power and then adds/removes escom, battery power as required. This is a good view of what a hybrid system does. NOT SOFTWARE RELATED... Goodwe has one fatal flaw - It does not show the battery usage, i.e. how much power went into the batteries and how much went out, it shows SOC but that does not tell one how much power (AC) your batteries have provided. If between 6pm and 9pm I only use batteries, it looks like my "load" total is not updated even though I am obviously using power but its not from escom but rather the batteries. I suppose it could have something to do with the placement of the meter....
  22. Yes, but theres is another setting they change as well... Log a call and they will fix.
  23. What capacity are you referring to PV production? What is your installed PV capacity? Looks like you're really punishing your battery... I read the other post so now see what your issue is....I had the same behavior, I logged a call with Goodwe and they updated my firmware and the problem was solved.
  24. Here is a list of good practice/stds that should be followed, they are not mine I copied them from another forum members post but cannot find the post now; 1) AC and DC conductors shall not be in the same trunking | 6.1.10, 3.85, 6.1.7,6.4.1, good practice 2) Protection devices shall be DC rates (see other post, very well explained) | 3) Correct protection and cable selection for batteries | 4) All DC cables must be labelled accordingly | Clause 7.12.x somewhere 5) The neutral shall not be earthed beyond an earth leakage | 6) a TN-S system shall not be converted to a TN-C system | 7) If a system is a hybrid and can operate in island mode, the earth leakage on the plug circuits shall be tested when inverter is islanded. Where applicable a earth-neutral bond (via relay) shall be installed to ensure proper operation of the earth leakage during grid loss events. | Clause 7.12.3 Notice/Labelling to indicate alternate supply, this includes that all “back-up” circuits be specifically and clearly labelled. | Clause Alternate supply short circuit current taken into account with main incoming short circuit currents | Clause 9) Earth Leakage installed after the inverter output | Clause 10) Correct Surge Protection has been installed on all DC and AC components as required by the lightning risk assessment 11) Neutral bar shall be split between council supply and on-site supply | Clause 13) Solar panel frame and structure shall be bonded to the consumer earth | Clause 7.12 14) Where single core conductors are used, such conductors for each circuit shall be tied together at intervals to ensure identification, unless another suitable arrangement is employed. | Clause 7.12 15) All DC (string cables) to be in conduits or where applicable affixed to the structure (no matter if they are UV rated) 16) All DC string cables to be labelled accordingly and voltage levels indicated on both the cable ends and the Distribution board. Note both operating voltage (max) and allowable voltage for the system on the DB board. 17) In addition it shall be recognised that the supply from each inverter,battery arrangement and PV panel (or identified clustered group), constitutes a supply, and requires arrangements similar to point of supply, which shall include switch-disconnection arrangements and shall comply with 7.12.5. 18) Does the CoC specifically include mention of the Alternative Supply? Has all the appropriate boxes been ticked and the description made specific to in the PV installation?
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