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87 Dream

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Everything posted by 87 Dream

  1. The order of the pics is out of place. Not sure why You will need to make sense of it all 87
  2. Coulombs comments on EEPROM fault Click on the above to take you to his comments on the same issue one of forumites has also had in the past. Here is the ESS Datalogger reset guide: 87
  3. So the unprocessed written in red means that the logger has not been able to process the event & when you view the Watch power the little dot next to the inverter will be in amber. However, usually the next day this unprocessed log starts a new day & the inverters stay green. This EEPROM has no effect in operation as I said before. Maybe someone like @Coulomb with buckets of knowledge of the insides of this machine will shed more light on this & why it is triggered. The app is called Smart ESS & the login details are the same as Watchpower. It's found on the Play store on Android. Not sure about the Fruit show device store. 87
  4. This is a generic type of fault code. It has zero effect on the operation of the inverter or WiFi logger. There is other software that can reset this fault & can be used to restart your WiFi logger remotely. Basically a system reset but only for the logger. 87
  5. What would you do if you were buying a new car? Accept a repaired vehicle or insist on a new vehicle off the factory production line? This unit obviously had an issue & needed some attention. What else needs attention in the future? These machines are put together by human beings, we are not perfect & maybe the said factory assembler had a bad day at work. Maybe you have a repaired lemonThe new PCB boards do not constitute the only parts of this machine. Also, when parts are changed its a totally different procedure than an initial assembly. At initial assembly with most electronics or automotive, the said item is in bare pieces & being build up from the ground up so to speak. Once it's already left the production line it's fully assembled. So to replace a board or parts can be difficult to reassemble & can take longer than the initial build work. Also so many other parts are in the way & risk being damaged during the repair process. So a wire might be nicked or a screw might be out of place. Why chance it? You have paid for a new Sunsynk, why must you be given a repaired Sunsynk? A totally different story if you were offered a repaired unit at a knock off price from the beginning. But in all honesty, look at like this, would you still opt to buy a repaired Sunsynk at the full price, had you known that this would have happened? Well done to Sunsynk, for at least getting some resolution in the end. Many other manufacturers would be far less forthcoming & bury you in a legal mess. 87
  6. It's a whole can of worms to grid feed at this current point in time. Electricity capacity crisis in SA aside. The costs to feed in far outweigh the money recovered to feed in. Firstly, a new meter that allows such a practice. Yes, that will set you back a monthly fee of R500pm. So let's think about this carefully. You starting on a R500pm deficit. Then after your production has exceeded this threshold you actually start to get credit. In my opinion it hasnt worked in places like the UK or AUS. We are light years away from those peoples rational politics or thought. Don't see it working here anytime soon. Yes, Hansa lots of energy that we could feed in but unfortunately it's not going to be a reality anytime soon. One of the many reasons that I don't like to pay for kit that I will never use, like the Sunsynks & Deye inverters. Honestly, great machines but you are paying for magic tricks that you will never get to practice at the circus. Eskom will not allow it period, unless you have money to burn & your equipment is used at max capacity at your own expense. If only we could make use of the potential The best use of that spare energy is in battery storage. Costs a lot of $$$ but at least it belongs to you & is useful. Also you get off their irregular supply. 87
  7. A single Axpert Max 7.2kW can draw 165A. So with 3 in parallel & in 3 phase that limit of 500A will not be exceeded but only just at 495A. But don't think that you run all phases at 7.2kW extensively. I would think that the 500A limit is safe only unless you plan an upgrade. Any upgrade or additional inverter added & you are over that limit. A price comparison between the 1000A & 500A model should be done here to make sure that you get the best value. 87
  8. All depends if your system draw from the batteries will exceed 500A which is the rating if the smart shunt. What size & type of inverters? Are they connected in parallel to the inverters, the entire battery bank? 87
  9. Yes, the shunt is in series on your negative terminal on your battery bank. Your options are the smart shunt or the Victron BMV or battery monitor. So doesn't matter how many batteries are in Parallel. There is only one connection going to the inverter neg so it plugs in on this terminal before the input to the inverter. It's a glorified ammeter. Counts the amps in & out. It's also rated up to 500A. Don't think you will exceed this number though 87
  10. Absolutely no sweat at all Hansa. Happy to help & share stuff with anyone whom might ask or need the assistance. The values you have their are quite good. These should not stress the cells. What I will say about the Solar Assistant battery emulator is that it doesn't do a bad job at all to guestimate the SoC. As a final & a little more costly resort you can connect a Victron Smart Shunt on the negative side on your battery in series. Then connect a VE direct to USB cable into the Pi. This will count the Coloumbs on the way in & on the way out. This works as an accurate SoC with Solar Assistant. The Smart Shunt & cable will cost in the region of +-R3K. But then you have solved the problem for good. 87
  11. By the way Pierre is a Top man & I appreciate that he spends so much time to help where he can to get things working. Sorry just a general shout out to him as his dedication and individual attention to customers is what is so sorely lacking in so many businesses let alone solar. 87
  12. Hi Hansa, I don't know Shoto Batteries but I do know a 16s config when I see it & can without a doubt tell you that you are dealing with a 16s config. 51.2V is the advertised 16S config as this measures 51.2V ÷16 = 3.2V which is the nominal voltage range for LiFePO4 cells. In the 15s config like many batteries they are configured for 3.2V nominal & advertised as 48V batteries exclusively & so 48÷15 = 3.2V nominal voltage of the cell. (Pylontech types) The charge format also has clues as to the 16s arrangement 54V -56.4V. So you always divide the bulk or even the float by 16 cells to get individual cell voltage provided the cells are top balanced. So on your settings bulk at 56.4V ÷ 16 = 3.525V per cell which is the absorption voltage. So for lithium iron phosphate cells like in anything Solar stay away from the edge of the envelope. So the absolute min voltage is 2.4V & the high is 3.65V per cell. The longer time you spend at these values the more degradation or damaged can be imposed on each cell. To lastly answer your question & get to the Crux of the matter. What is the best Charge voltage settings? The one that best suites your desire to make your cells last the longest. Remember take whatever you want to set & ÷ that numbed by 16s in your case. That value is what will make you sleep better at night. 87
  13. Not to put down the brand or make in this post, but in general in SA, why is our backup, support & warranty claiming so darn difficult? It is compulsory to honour the warranty claim & processing thereof. Yes, there needs to be a checking process to see if quality control was an issue at the installation phase, but the suppliers are really not compliant in this regard. Almost seems, like they are like insurance companies, forcing the largest amount of doubt in any situation to avoid the claim. ( I am dealing with a certain not to be named right now, battery supplier at the moment with an exact such problem.) There is a very valuable lesson here. Not just with Sunsynk, but any kit that you purchase with any brand or supplier. These purchases are not small change, you should buy in the same manner as when purchasing a motor vehicle. The after sales services are more important than we might think. Because once you are in bed with the product, how your supplier will react, will ultimately make up the whole experience of the entire product. Buy any product with open eyes, know your rights as a consumer, get the warranty fine print attached, read it through & also keep a record of when it will expire. Sorry for your experience Eugene. Hope you get some closure & find a positive way forward. 87
  14. I figured as much Bobster...after reading it a few times 87
  15. Ditto Sarel Just because it's healthcare doesn't mean it's not a business. I worked at the admissions department in the said hospital. My blinkers came off after my experience there. 87
  16. I have worked at one particular medical institution under their banner & it is in my opinion that Netcare are in no way struggling...Only in my opinion I don't want to open up a can of worms about private health care in general in SA or abroad, otherwise we will be here debating this for a long time. The point I wanted to stress is that they are a huge commercial enterprise & forking out money to invest in their solar installation is in terms of how much one pays for medical care, quite insignificant. Yes, Discovery and all the medical aids will try to audit & oversight many things. The power of a Medical Doctor on the other hand is unquestionable especially in these modern times. Getting back to Solar though, if you are spending big on electricity each month basically you just offsetting your costs into your own solar production by investing in Solar & ditching eskoms Dodgy supply. Another example, if you spent R7k a month on petrol, an electric vehicle makes sense especially investing in your own home solar infrastructure, as this will be subsidised by you never visiting a Petrol pump again. The same can be said for the Tesla Solar tiles. The roof tiles on a house constitute close to 30% of the cost of a new home. If this cost was offset & Solar tiles purchased you have used an otherwise high expense to offset your solar installation. 87
  17. It's really a pity that you guys are struggling with Comms. Hooking these up to even a Smart Daly BMS would do wonders. But then again you have already spent the money & the appetite to spend more might not be there. The Supplier that sold these to you has to come to the fore to solve this issue. Otherwise I'm afraid you have a massive power pack that cannot talk for itself. Then from the out you might as well have gone the DIY route & bought cells, busbars & the BMS yourself, that way Comms would have been no issue & at least you end up with your destiny in your own hands. But now you have a product that is not working to spec & the supplier is maybe not responsive. If you still want to venture into the DIY market & get some support for this battery give me a shout. The cells are good value, you just need new brains for the system, at most will cost you 2 BMSs & then you have solved the Comms problem. That way also at least you see the cell individual voltages. At present you are in the dark only able to extract total voltage & a rough 0-25/25-50/50-75/75-100% SoC. However, going down this route will void your warranty but hey what is the warranty worth anyways especially as your supplier is casting a deaf ear on you anyway. I can only assume that this is what your supplier is doing based on your posts here. One very last solution would be to contact Pierre at Solar Assistant & ask if he can help you get the protocol for the batteries Comms. He is a genius & I can bet he may be able to hack into the brain of this battery. Both options are worth a try otherwise you have the equivalent of Lead Acids in your hands there Dave. 87
  18. Mostly the equipment used are dependent on the company doing the installation. In our company we use exclusively Huawei as they have a very solid reputation for quality & great backup. They have scales that range from 15kW to 150kw Grid tied systems. So yes, one inverter handles are this energy. It still bogles my mind how they get a single 95kg machine to invert so much energy to AC. No fans, just a massive heat sink & it's IP65 so this inverter usually in order to save costs lives near the array. Otherwise the DC cabling from 28MPPTs can become very costly. AC cable is cheaper to run to the main meter & DB. But to add to others comments there are many other manufacturers like SMA that make great quality inverters. 87
  19. Mostly the Commercial scale of economies are using Grid tied systems. They will definitely need storage & yes usually a combination of both. Nothing different about how its all done much like a residential setup except things are scaled up. So the Grid tied system usually funds the storage in the long term. They have essential loads & non essential loads. Pretty sure that ICU or higher care units are essential. The non essentials are lighting in basements or storerooms or anything surplus to requirements or nice to haves. It looks from the outside like massive numbers but again much like a household the scale is much the same except add a few zeros. Eg. A certain commercial client has a monthly Eskom bill of R80K for electricity. So imagine a R4bar system will playback in 40 months or just over 4 years. So a combination of Grid tied & hybrid solar makes for a very serious financial investment. No more diesel for a Generator. Just energy from the sun. It's a business necessity. Hospitals especially the Netcare group make huge profits and turnovers. In the economics of it, this is small change & adds to business security & confidence. 87
  20. Congrats Strepies, welcome to the club!! Can't think of any person in this game who can just sit back & say any installation went off perfectly & that there is no improvements required. Also well done & taking it on yourself. Many ppl out there lack the courage & I'm guessing you are well competent enough especially if the machine is working without fault. Kudos to you Sir 87
  21. Further to the discussion I did not mention that the Daly is sold in many forms, 12V, 24V,36V . So you just need to buy what suits your battery config. 87
  22. Hi Raj, unfortunately not in the sense of changing the parameters all together of lets say making a 24V BMS into a 48v system. The changes that can be made are the trigger parameters. Like at what cell individual you want protection etc. 87
  23. Hi John 2. This BMS is great value & the right product for your application. I use them in a few applications on my batteries & cannot say a bad thing about them yet. Bluetooth functionality, as well as good cable size for the right amount of amps. 87
  24. The unfortunate problem we have is language. In many cases Cantonese or Mandarin to English. Imagine a translated tech manual from Afrikaans to English & then you sort of understand why they keep the tech out of it. Also the way the Chinese form their companies is that the Marketing people never get too involved with the Engineers as they are called in China. Another very interesting thing is that the Mandarin alphabet has many more characters than ours in English. The challenges faced are huge. Not to even mention the cultural diversity. It's like trying to understand the Former Soviet Union way of thinking when it comes to invention & machinery Vs Western ways in thought. The Chernobyl disaster springs to mind. Politics plays an important part too. Communism Vs Democracy. The way these two diverse types of people behave is like oil & water. 87
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