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Thank you for the great forum, Safe Driving over the weekend. Sincerely Jason

markus_m2

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  1. Is there really no way to limit with the Goodwe? What about setting the battery as "Other" (not specifying its a Pylon) and setting custom parameters? Or is it rather recommended to stick to setting specifically Pylontech (maybe one needs to set this for correct communications with the BMS?) Ultimately I really would like to set the battery to charge only to +- 80% (with on grid discharge to 40% DOD). This will keep the battery at between 60% to 80% while connected to the grid. Furthermore, I'd like to limit the charge / discharge during grid connect to only 15A or so. Worth doing to increase battery longevity? Or rather stick with Pylontech battery settings (which cannot be changed)?
  2. Back to original question - Is it better to cycle (exercise) a Pylon, or keep it charged? (For this question please disregard Eskom savings, this is purely a question of battery longevity). They say better not keep it at 100%. No problem to keep it at 50% - 60% for extended periods... To phrase it differently - what degrades a Pylon more, keeping at high charge or cycling up and down to say 60% daily?
  3. YES, love your work @Kilowatt Power, that's brilliant!
  4. Because the pool pump is, unfortunately, on the same circuit as some outside essentials...but I'm not too worried about that, it's a very efficient "multi-speed" pump (around 300w continuous) and will obviously run only during the day - obviously a cloudy day will call for it to be switched off.
  5. Hey guys, What have the clever okes out there done to be notified when there's load shedding? A decent hybrid setup automatically kicks over to battery when grid supply fails, which is brilliant! However, only the non-essential loads get kicked off, most of which we never monitor... My issue with this is: You'll happily continue running the pool pump and other appliances which drain the battery unnecessarily. More importantly, the maid unknowingly plugs in the iron for example, which is beyond the current rating of the battery. So, I'm thinking a 2 stage warning system: An audible alarm, similar to a UPS, but which one can "push button" deactivate until the grid is back. ("yes, I hear you, grid is gone, thank you, be quiet now") An indication lamp, which comes on and stays on permanently during load shedding. Even after the audible "acknowledgement" one still sees whether grid is supplying or not. No 2. should be very easy, using a relay you connect the light on inverter power onto the NC portion of a relay, and connect the relay "coil" to grid supply. When grid is present, the relay is switched to NO position, meaning no light, when grid fails the relay flicks back to its standard NC position, voila, the light circuit is closed... No 1. however, similar to No 2. above, but how to wire in a push button deactivate switch? Any other clever solutions you guys have come up with? Cheers, Markus
  6. Hey guys, Just a quick update on the above: I had an old pre-paid meter lying around which I re-commissioned and wired into my panel for 2 weeks for testing. End result: Goodwe Smartmeter with CT-clamp is about as accurate as can be! Efergy Engage CT-clamp meter is completely unreliable - I could live with 5%, maybe 10% out, but the Efergy over-reads by anything between 10% up to 100%! Municipal Meter reading slightly high, may get them out to replace at some point...
  7. Hi Plonkster, What you say about both circuits needing a light makes sense, but that's in contradiction to your original post further up? Your one light on essentials also won't warn the electrician to grid power when he switches off the inverter supply... Anyways, I can have the Goodwe SmartMeters' light act as my "Grid power live" light. Just need to install a "inverter live" light...
  8. @plonkster, to expand on your SOP, what about putting in a single light, difference being that it's mostly off and only comes ON when the grid is disconnected? My reason behind this would be to have some visual warning that there's load shedding, and of course it will double up as an indicator light in case the electrician cuts the grid. A simple relay would do the trick... An additional audible warning would be first prize - load shedding creates an annoying buzzer that you have to acknowledge to switch it off. Anyone know how best to design such a audible warning system? (I presume a more complex relay setup)
  9. Mine is just a single battery, produced Jan this year, so ya I guess it'd be fair to expect that sort of 10% drop since then...
  10. Wow. Interesting, would've thought higher...thx for the info...
  11. Hey guys, Just finished our Pylontech US3000 install on a Goodwe inverter. What SOC do these batteries ship with? Ours was at 50% - would've thought for extended "storage" (or shipping from factory) one wants it charged up to a higher SOC?
  12. Hello all, Goodwe system now running since three months - very happy. Finally took the plunge and bought a Pylontech battery yesterday - a single US3000. The optional brackets are quite pricey and to my mind don't serve much purpose unless you're paralleling a few batteries... For a single Pylon: Is such a bracket necessary? Possibly for cooling, but surely same could be achieved by appropriate placement (mounting) of the battery? A certain supplier tried to sell me a cabinet, saying that the battery warranty is void if not mounted in the cabinet. I walked straight out of that store, but that got me thinking Pylon may actually void the warranty if you cannot prove that the battery was mounted either in a cabinet or with the optional brackets? Thanks in advance... Markus
  13. Yep, that's my setup at the moment till I find the cash to invest in some batteries - Goodwe ES with a couple of panels, works a charm!
  14. Hey guys, So this lockdown has given me time to closely monitor the energy of the newly installed PV system. Straight to the point, I've got three energy meters measuring the municipal power usage: 1. Goodwe smartmeter as part of the Goodwe install. 2. Efergy Engage (basic ct clip) 3. Municipal meter (old rotary type). Comparing 1 to 2: The near instantaneous readings are out by a large margin, and more confusing is that the difference isn't constant - Efergy reads anything between 0% and 80% higher than the Goodwe. Typical reading when house is sleeping: Goodwe: 170W / Efergy: 245W Comparing 1 to 3: Municipal meter reading over time around 10% higher than Goodwe (comparing exact same time frame 20 days). So my question is, which of these meters is the most accurate? Goodwe smartmeter measures usage based on accurate voltage reading and ct clip amp reading. How accurate are such ct clip measurements? Municipal meter - would have expected this one to be accurate, but who knows? Old rotary type, could this be "off" by 10%? I don't expect the efergy meter to make top accuracy list For one it only measures amps (assumes 240v)...but still, one wouldn't expect it to be that far off (up to around 80% higher than goodwe). Maybe ct clips don't measure power factor "lost power" compared to the municipal meter? Goodwe ct clip correctly installed (correct orientation and also directly onto mains feeding into house) - is there any further "best practice" when installing the ct clip? Example: keep as far as possible from other cables, if possible let cable run through the middle (rather than just hanging the clip on the cable), etc? Or does it suffice to simply just clip around the cable, even if the negative or other cables run right next to it? Thanks guys, appreciate any input from those in the know...
  15. I am enjoying the outcome of the answers so far, thanks guys...looks like "out of sight"" she goes
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