Electrical Flow Diagram

[KR.]

I've currently got a Sterling BB1230 charging a 100ah AGM, a Victron smart charger is plugged into the van mains outlet and hard wired onto the battery. Somewhere in the system lies the Sargent EC155 with its charger fuse removed, which may or may not be necessary.
I'll be getting a Victron MPPT Smart Solar 100/20 and solar panels. Oh - and a bluetooth smart sense monitor.

I'll now have 3 inputs to the battery, solar, DC-DC and EHU/Victron and wondering how they all tie together. I think the EC155 would constitute the 'load' on the MPPT but not sure if it's done that way. I'm not an electrical whizz by any means but find flow diagrams simple enough, so I try and imagine things that way.

Could anyone supply a fag packet diagram of how it all should fit together? A pencil drawing snapped on a phone is perfectly acceptable.

 

[Dellmassive]

they all get connected to the battery together via a fused connections.

The grounds to the chassis (if your using a shunt monitor)

they will work along side with each other . . .

though the chances of running all simultaneously is slim . . .

ie, engine running, while on EHU, while solar charging.


each charger will work alone detecting the battery voltage applying a charge as per its own internal programming . .

as a load is drawn the battery volts will drop, one or more charger will detect this and apply a charge . . . .

onother charger will see the higher charge voltage and decided its good enough to not charge . . .


the flow of current will depend on what charger is doing what at any specific moment in time. . . .


we need to get some one with 3x clamp meters to do a real life measurement . . .




The best case would be a low battery voltage and system under load . . . . that way all the charge sources will join together to provide the max sum of all the sources. individual currents to all add up . . . . . untill the voltage is raised to a float level at which point each charger will drop out.

i suppose it depends how each charger is programmed to monitor and detect the battery voltage to decide if it needs to apply a higher charge voltage. . .

ie 13.2v float

or 14.6 charge etc etc

from a battery rest volatge of 12v-13v depending on battery type.



this victron schematic shows all charge sources connect to the main power buss-bars via isolation switches & fuses . . . . .

solar, EHU, DC-DC

System schematics - Victron Energy

A system schematic shows schematically how Victron Energy devices are connected to each other. Find schematics for your product.

www.victronenergy.com

.

 

[Dellmassive]

heres another . . .

https://www.victronenergy.com/upload/documents/DS-Lucians-Victron-Van-Automotive-Full.pdf

System schematics - Victron Energy

A system schematic shows schematically how Victron Energy devices are connected to each other. Find schematics for your product.

www.victronenergy.com

 

[KR.]

Thanks Dell, I'm at work right now but I'll have time to look at the diagrams and match things up tomorrow.

 

[KR.]

Thanks again @Dellmassive I've had a look at the diagrams and your explanation, so I'm a bit better informed - one question though - what will be the last bit of kit before the load(s)? I believe at the moment my EC155 while stripped of its charger function is still acting as a distribution panel/fusebox so in my head all the loads are fed from there? Does the (to be fitted) MPPT affect that or is the MPPT 'load' now the EC155? Obviously the diagrams don't cater for something like the EC155 so wondering how it would fit into my future setup.
I see the 100/20 has 3 sets of terminals - battery, PV and load. Maybe I'm getting sucked into those load terminals and in my particular case they're perhaps neither here nor there and won't be used?