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NickNou

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  1. Electronzoo - Would you be keen to sell the Venus GX and Single phase meter separately?
  2. One could consider this, but most of the local relays that I've had a look at have time delays starting at 0.5 seconds and up. With my current prepaid meter, the trip occurs almost immediately. It would be great if you could dump the spike into a set of immersion heaters or similar.
  3. I'm currently running with 2.08-13. I did see yesterday that the 2.08 is out as a official release. Changelog does indicate that rev 13 includes the change for the 200W fronius zero feed bug. I'll flash with the release version of V2.08 this weekend. I'm not running with a grid meter, and currently make use if the monitoring inside the Quattro itself. The Ecolec 570 was discontinued ages ago. There is little/no documentation available, and all the info I've been able to attain hasn't been of much use. I do know that the Ecolec is fitted with an internal RCD monitoring circuit, where y
  4. Have some more time on my hands to test the ESS system again. PV modulation: Modbus throttling of the Fronius works just fine. With no or little AC load, the Fronius is throttled to very low outputs quite effectively. This works quite well even when disconnected to mains. As a redundancy, I checked how well the frequency shift would work in the event of modbus failure. Victron disconnects from grid connection, and immediately starts with frequency shift modulation, pushing frequency up to around 52.7Hz. Fronius scales back PV output accordingly. No problems here. Reverse power
  5. ACDC have the SP510 available, Rhomberg. I don't think this unit would be quick enough to respond to a sudden reverse power feed. You can only set the response delay between 1 and 10 seconds. Measurement is also not that accurate. On a 5A CT you can measure down to 100mA. Say you have a 60/5A CT on the line, you getting a sensitivity of 600mA. Rough maths puts that at around 130W. Not really great. I'm sure a bit of googling will reveal purpose made monitors for this sort of application. Already running the 5kVA Quattro with a maximum inverter limit of 3000W. I think a big factor
  6. Ditto the above. Once had my Victron box make extremely odd noises and could not figure out why. Checked everything (PV inverter, frequency shift, charging voltages) but could not make sense of why the inverter was resorting to a complete buzz-out with almost no load late one afternoon. DC voltage was also a little erratic. Turns out this happens each time the wife uses her hair straighter... as per plonkster, a non-linear current form is most likely to blame.
  7. Hi Gents, Been tinkering on-off for a long time, but I finally managed to get a Victron ESS system up and running on my domestic system over the weekend. In principal, my ESS setup consists of the following: Victron Quattro, 5000VA Fronius 3.5 Primo grid tie inverter (on inverter output) 48V-825AH Battery bank BMV 700 Beaglebone Black (Venus GX) managing the whole lot I used to run the setup with a SMA SB4000 in a hub 2 configuration. Performance with this was slightly lacklustre, as the Multi/Quattro spends most of its time not connected to the grid to perf
  8. Plonkster, Thanks a million for the updated image for the BBB - greatly appreciated!! I flashed the new image, and the Mk3-USB to VE interface was pretty much plug and play. I'm getting figures from my blue box, and the info is pushing through to the VRM. Is the objective here to have Venus capable of reading and logging consumption of simple pulse metering devices?
  9. I see the file size topped out . Busy downloading. I'll flash with the new image to the BBB tonight and see if I win! Thanks again
  10. Thanks a lot - greatly appreciated! FYI - Did a bit of Googling on why I'm sitting with a Fronius Primo with no data manager card. After scouring through the Fronius fine print, It seems they have two specs - a Full spec and a Light spec. Light spec has the Data manager card omitted from the scope of supply. Alas... I'm sitting with the light variant. I'll have to retrofit a card - Not that happy, considering I'm normally quite thorough with this sort of thing.
  11. Let me see where this takes me - I have the whole evening left to tinker.. That would be great - I'll follow up with you if I don't come right using your input above. Thanks!
  12. Hi Plonkster, Thanks for the quick feedback! I'll give it a try... Like I said, this is not my core area of expertise, hence the question. I'm quite sure I'll make headway if I get into it. Ran into a bit of a dead end with my Fronius Primo. I understood these items were distributed with the datacards already installed - they are marketed as Fronius' communication based inverters. Seems I've been supplied what seems to a variant without the data-manager card.... Thanks again, Nick
  13. Hi Plonkster, I know you've been working on the Venus/Raspberry Pi these past few months. Hoping you can assist... I'm busy trying to get ESS running on my setup, and am running the Venus CCGX image on a Beaglebone. I have the BB connecting to the VRM, and I haven't had any issues connecting my BMV, via a USB-VE Direct cable, to the Beaglebone. Now, I'm trying to get comm's setup between the Beaglebone and the Quattro. This is being done via a MK3-USB. I know i need to follow the instructions, as per the instructions on github: modify the /etc/venus/mkx-port file: change
  14. True - this will greatly simplify the installation. However, I wont be surprised if most installations going forward make use of regular Multiplus and Quattro inverters regardless, even if the Multigrid is available. From a cost standpoint, Anti-islanding add-ons just don't make any sense. An uninformed consumer won't be willing to pay R7.5k for a small blue box to comply with regulations that they might not even be checked on. Its a very difficult "concept" to sell, even at 130 Euros... Personally, I feel that if installers and wholesalers were concerned with the above, anti-islandi
  15. Quite interesting - There has been ample discussion on the topic of anti-islanding these past few months. Fact remains - any South African ESS install will need a UFR 1001E to be compliant. No self-engineered arrangement of contactors, coils or relays can forgo this. Pricing and lack of local stock holding of anti-islanding units are part of the problem, and lends itself to the large number of non-compliant Victron installations, many of which are blissfully pumping surplus PV through old mechanical meters. For interest: There are other options - with VDE certifications - wh
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