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

Kilowatt

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  1. So i thought i would give some feed back on this matter, i should have done it a while back already. I have made no changes to my system since Plonkster did the Patch. I still get the odd over current alarm, but not often, probably happens once every month or second month now. I don't worry about it anymore. I am happy, i like my Victron setup and it continues to work well.
  2. Another question, I normally have scheduled charge set for 5pm - 7pm while we cook, normally the batteries are at fully charged by this time of day so they stay at the maximum 95% i can select. This works well as i don't use electricity to charge the batteries and obviously they are not subjected to heavy battery usage while we cook. But what i noticed the other day when i selected keep batteries charged is that the battery went to 100% followed by absorption for the duration of the period i chose. Correct me if i am wrong but i don't think they can go into absorption when scheduled charging is selected, at least i have not noticed that. I was thinking that perhaps some of my issues i have experienced as mention above, could possibly be from the batteries not being allowed to go into absorption. Possibly not allowing the cells to balance often enough? And lastly how often should the batteries go into absorption if i cycle the daily from 100% - 25%?
  3. I definitely think there will be an advantage for me to add extra watts to my system. Maybe bring the total PV to about 3800w. (Probably have 3000w or just over of actual power as the panels are not 100% efficient)I will have excess power during peak, but it will also mean I should have sufficient power to power my loads in the early morning from sunrise to around 10ish and again in the later afternoons as well. Will also help boost battery charging. My extra PV will have to be on its own MPPT on east side of my house to full utilize the morning sun. The other panels have full sun from 9:30 - sunset.
  4. Ok, so my inverter is working hard in this scenario and the fan is running, so it’s just not 100% efficient. No problem I can live with that. If I add extra PV panels, let’s say another 1000w after losses etc. how would that change the example above? Would I be right to presume, I am now generating 3500w, 3000w is going to running the load including losses and inefficiency’s, would the 500w balance go into charging the battery? The reason, I’m asking or wanting to understand is because I want to add extra PV panels, so that I can have at least 3000w at peak to handle the bigger loads and also supplement early morning PV generation. But if the extra PV power is not going to be usable then obviously I don’t want to waste my money doing that.
  5. Hi Guys, Hi Guys, Please can someone explain to me the reason why i am drawing so much current from the grid when my PV being generated is close to my requirement in the picture below? Is this because the inverter can only supply 2400w continuously? (Multiplus ii 48/3000)
  6. Thank you plonkster, Unfortunately today is raining and overcast, not sure if we will get to full charge or not. I do cycle my batteries, and also run them them on the optimized without battery life setting. There are also times when the battery has a large discharge current then immediately followed by a large charge current, so i am not sure if this confuses it or not. I won't make any changes to the firmware, so we can let it run as set and hopefully no more alarms. I will give you feedback, hopefully it will just be to confirm all is in order. thanks for all the help
  7. I just want to say a big thank you too all those who are so willing to pass on advise and help, but in this case especially to Jaco De Jong. I am blown away at the commitment and time he spent last night trying to resolve a problem for me ( An absolute Stranger). Thank you very much.
  8. Are your parameters the same as this? Parameter Setting Battery type Lithium Charge curve Fixed Absorption voltage 53.2 V Float voltage 53.0 V Absorption time 1 Hr
  9. Thanks Jaco, I will go through the recommended settings as per the document. I don't have an issue with the battery not reaching 100% full as i understood this is because of the 52v setpoint. but i am just trying to figure out what's changed or what the cause for the high voltage alarm is now, when this has not been an issue before. Feels like the battery and the MPPT are not communicating properly. I agree with you that the high alarm set under max voltage cant be right so will investigate this.
  10. Hi Guys, I have a fairly new Victron Multiplus ii installation that has been operational for about 3 or 4 weeks now. Up until 3 days ago it has been operating without any issues but now, i am receiving high voltage alarms on my system. I have not made any changes to the system, so i am unsure why i am receiving the alarms or what the cause could be. Any idea's of what to check? The high voltage is set to 52v and the max charge voltage is set to 53.2v although its never reaches that high. It feels to me that the MPPT is maybe not reacting fast enough? As far as i know i am on all that latest firmware versions on everything. The battery is listed under my device list. The voltage spikes to just higher than the 52v setpoint, like 52.16v and it also gives an alarm at just under 52v, so i don't think i am actually causing any damage to the batteries and i have not noticed any alarm lights on the batteries either. Any help would be appreciated.
  11. Thanks for the feedback. I am pretty sure I have made the same wiring mistakes that you had, when the Electrician comes back we will give it another go. Other than that I gained some good confidence with my system yesterday, my wife had big loads running most of the afternoon, and we ran without any hiccups even up to 8kw passing through the inverter at times. I'm very satisfied with the Victron equipment so far. @Isismobile, do your Phylontech batteries show up under the Device list? I cant see my batteries on mine. I have the Victron VE CAN to CAN BUS cable linking the battery and Venus GX What size cable do you have between your combiner box and MPPT?
  12. Isimobile, did you resolve this issue? I have also just connected my Multiplus 2 and have exactly the same issue. Have you tried TTT's recommendation.
  13. Hi Guys, Please can someone explain the theory behind having NoArk 63A 1000VDC 6ka breaker on the combiner box if the if the max voltage on that PV string is only 150v? Most of the pre made combiner boxes seem to have smaller breakers like 250VDC. I have ordered 3 x 500VDC breakers for my combiner box I could not find 2 pole 1000VDC breakers, will this still be ok? My PV Array is 9 x 350w panels 3 in series.

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