Batteries are discharging despite solar input being Higher than the AC loads & DC Output
Batteries are DISCHARGING at 444w & Pv is 1175w
DC 0w Ac Loads 413w
have rebooted system components
screenshot attached
Quatro 10000 240/48v
CerboGx V3.52
MPPT 250/100 R2
Hi, can we have a picture of your wiring/system please, also do you have a smartshunt in the system?
And list all other equipment too please.
You’re pv is disappearing somewhere, your ac is purely running of the batteries.
Very, very strange
But ofc IF you have a Smartshunt, then the pv minus is connected directly to the battery, bypassing the shunt.
Yes there is a BMV 712 in it from the old cccx time
the wind generator is NOT part of the system.
AC in is from a Genset
The Orion 48/12 is to a 12v Pump direct from batts used only for pumping diesel & the batt Isolator is to shut it off completely so unnamed can not STEAL fuel when away
One, and only one wire should be connected to battery minus. The one to the shunt.
In your picture i see two wires.
Problem solved.
PLEASE
Change it…
Then we’ll see…
at the battery ?
I agree with Ludo but if you have a schematic the would be helpful as you have tucked the wires away and i can’t see where they all go.
From the battery to “anything” on the other side of the shunt
will tomorrow But The Battery Neg to Blue dc/dc converter is SWITCH ISOLATED & does Not Connect to anything else
Draws voltage direct from the Battery to run a pump when Not isolated Only so why is this an issue its currently DISCONNECTED ?
You’re negative output from the MPPT 250/100 where does it go?
From your video eventho it say discharging i see the battery voltage fluctuating up suggesting its not being measured correctly but is charging the batteries, could you check that wiring?
This is over vrm, use the remote console for a better picture of what is happening locally.
I am curious though, definitely need a better idea of what is happening here. such small wiring from the battery to the shunt, then the inverter has double that?
Or is that shunt dc power measurement?
Are you sure the shunt is the correct way around?
Hi Dave/Ludo
Have removed dc-dc converter from Direct battery connection
Checked wiring
Neg goes to Batt Neg on Inverter
Pos goes to Batt Pos on inverter
This was wired as per Victron Quattro schematic as was our other system which has been in operation for 9.5 Years
This system was on an old unbranded inverter which we replaced in favour of Victron the Cerbo is 2Months old Quattro is 4 weeks old has been without issue until this week when we noticed the Discharging. this system only Powers several fridges & freezers incidentals & roller shutters etc on polly tunnels if it had not been charging the batteries for long would it not have got below 80% surely as it draws a consistent 2-400w
Remote console shows the similar info although it is normally 12 oclockish before we generate much power on this system
Battery to shunt & shunt to inverter is about the same & 35mm square Cable & properly terminated with Lugs
Neg of battery should go to smartshunt, nowhere else. All other electrical components go to the load side of the shunt, ie common ground, negative busbar whatsoever. In your pictures i see 3 connections in the wire between shunt and battery ??
Have removed the Dc/Dc converter
Only One Neg wire is to the battery
What is in the terminalbox to the right of the mppt ?
Without the bmv you’re driving blind.
Hi
Thats the AC out to an outside Building
According to VRM either classic or Standard Version its in constant DISCHARGE
According to Attached Display its Charging & the Voltage in Batteries is Increasing see attached
Yes, because the mppt minus is connected to the wrong side of the shunt, so cerbo can’t register it
It might take you a week or two to find the fault…
