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  1. D

    Help requested on Solar/Powerwall/Apollo Gem Diverter

    Advice if you please - We have 8kw of solar feeding into a Powerwall 2/Gateway with a 3 phase system. I wish to divert some of the surplus power produced to the emersion on our FTC5 Ecodan unit. I am attempting to install an Apollo Gem Diverter but cannot get accurate readings which makes me...
  2. D

    Concern re 3 Phase imbalance

    Marconi Ref. Solax X3 Inverter - state of phases with power cut. As requested have now tried cutting power to our inverter. A friend was logged in to our web portal at the time the power was cut. All 3 phases went down and there was no power being produced. The web portal simply recorded -...
  4. D

    Concern re 3 Phase imbalance

    Marconi Have not forgotten your request to check inverter in outage situation. Friend standing by on our web portal when we power down but page refreshing times are somewhat slow and, although the graph showing incoming PV dips to '0' power across the phases does not change. Will try again...
  5. D

    Concern re 3 Phase imbalance

    In which case, thank you for your assistance ........and patience. Regards Pete
  7. D

    Concern re 3 Phase imbalance

    Ah yes, I am beginning to understand..........I think. Power readings across the 3 phases are determined by the load being applied at any one time to each of the phases, hence a likely imbalance. The web portal for the inverter does give a 'Real Time Display' of AC Power for each phase...
  8. D

    Concern re 3 Phase imbalance

    Interesting - it had not occurred to me that generated power from 2 phases are grid-bound when usage is minimal. Would not justify 2nd battery though - average drawn from grid in last 8 weeks is 190kW per week with around 25kW 'returned' to grid. Awaiting Green Grant Voucher, will ensure...
  10. D

    Concern re 3 Phase imbalance

    Whoops, sorry did not notice earlier posts. Responses: Yes, well aware of need for caution (in a previous life attended related fatalities). Aware inverter will hold charge (capacitors?). Investigation only by me, as per previous posting I have no practical knowledge of 3 phase systems...
  11. D

    Concern re 3 Phase imbalance

    Yes for MVHR and ftc = the Ecodan FTC5 Unit which includes the H/W tank. Pete
  13. D

    Concern re 3 Phase imbalance

    EV Charger is on an NCN132 C32 MCB. The Powerwall does not have its own trip on the board, the incoming tails are inturrupted on L1, I understand and go to the 'Gateway Control'. Hefty cable from there to battery. Photos attached as requested - the board is as left by the installing sparks...
  14. D

    Concern re 3 Phase imbalance

    This started with an attempt to identify the reason for the short power cuts. That is down to the fluctuating voltage which, hopefully, UKPN are now investigating with our sub-station or beyond. That highlighted the reverse current which has been resolved, presumably, by rebooting the inverter...
  16. D

    Concern re 3 Phase imbalance

    Marconi and Wilko Thanks for info. Have been waiting for a drop of sun so as to give varying readings from inverter. No joy, overcast for 2 days, minimal readings (Wilko - no shading on panels, due south with just a field beyond). Useful to know max. variation on voltage of 4%. Hopefully...
  17. D

    Concern re 3 Phase imbalance

    Marconi Another evening and no reverse current recorded after dark. So, hopefully, that's one problem solved. Still have a differential of 15% - 25% between highest and lowest phases during the day. I am aware that such an imbalance on an electric motor may cause permanent damage but does the...
  19. D

    Concern re 3 Phase imbalance

    Marconi Thank you for your response. As it happens I also spoke to installer of (the single) battery and he called in. He did not find any faults but - isolated the PV panels........... imbalance/reverse current still there. Then isolated the inverter and that stopped the reverse current...
  20. D

    Concern re 3 Phase imbalance

    Could you please assist an end-user with limited knowledge:- The system we installed in our new-build is 7.83 Kw of PV with a 'Solax X3' 3 Phase inverter. A later addition was a Tesla Powerwall 2 with the later gateway. Following a series of short (2min) power cuts and lights flickering UKPN...

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