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Is their also a battery-life guard in the inverter, because in winter time our PV system will not produce enough energy to load the batteries , what does the victron offer to prolong the battery life?
Frank
Meanwhile , I found out the I will need 3 multiplus-es in my 3-phase house, correct?
additional , I 'd like to know how the multiplus-es decide when to start charging the batteries and when they decide that battery power should be used instead of grid-power? do they just look at the charge level of battery, when battery reaches 90% charged state (SOC) they start the consumption off the battery until DOD drops below 10% or 20%?
thx for your feedback
You don't need three, its more than possible to use a single unit.
https://www.victronenergy.com/media/pg/Energy_Storage_System/en/ess-introduction---features.html
The venus device (ccgx, venus, cerbo etc) monitors total power in/out and aims to keep the grid meter at 0w (or the set point), until the preset battery levels.
Watch the video in the first link, the second contains info about phase compensation.
In grid failure the system will backup the phase its on.
Hi,
The main goal of the ess system is to keep the main meter at 0.
The ess system can provide all you ask for.
Hello jejochen,
is it possible to program the multiplus so that it will only charge the batteries during the daytime when solar panels are producing an overcapacity of electricity? E.g. Between 10 am and 16 pm
frank
Yes you can. Mind you this is not an intelligent schedule. It does not take into account the effective power that is produced by the solar panels. It just starts charging the batteries at 10:00 every day and stops when at 95% State of Charge or at 16:00 (whichever comes first).
ESS design and installation manual
Parallel, split- and three phase VE.Bus systems manual
Theory on wiring large systems PDF
Three-phase and parallel system theory training presentation
Three-phase & Parallel installation training video
Victron with AC PV online training
AC-coupling and the Factor 1.0 rule
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