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3 phase Microgrid with Fronius (AC and DC coupled) Output 2

I was wondering how the Output 2 on a Quattro or Multiplus 3 phase micro-grid with Fronius works. If the Fronius is on Output 1, how do the Victron inverters make Output 2 operate? Does it operate as it normally does in a normal three phase installation without Fronius?

James asked

0 Answers

Where is the 100/30 SmartSolar Controller ground connection?

Hi, I am installing an MPPT100/30 Smart Solar charge controller to a small camper trailer. There is no 'earth' as such in the existing wiring as the battery bank of two 100 a/h deep cycles is wired direct to common positive and negative busses. Is it necessary to connect the body of the controller to the negative post of one of the batteries?

mickn asked
Guy Stewart (Victron Community Manager) commented ·

1 Answer

Quattro Parallel Operation

Dear Members,

My first post on the forum and I would be very grateful for any guidance/confirmation that can be provided.

We have just upgraded our boat and the biggest challenge and cost is going to be upgrading the electrical system onboard. I do have a 9.5kva generator and shore power when available. Battery bank is 12V and provides power for all “essential” operational equipment. I intend to provide all other consumers at 220V.

I’ve read that the Quattro’s are capable of parallel operation and intend to upgrade and install 2 x 5000W 12/220 units in parallel providing approximately the same power as the generator and more than normal shore power at 15/30A (I also get a little redundancy if/when issues arise).


· Can I run shore power and split to both Quattro’s? I believe the answer is yes

· Can I run generator and split to both Quattro’s? I believe the answer is yes

· Can I take the 220V output from both Quattro’s and common them up before running the common power supply to my 220V distribution board? The point I need guidance on

Best regards


Paul Lannon asked
Paul Lannon commented ·

2 Answers

Phoenix Inverter 12/3000 not powering up

I have the Phoenix Inverter 12/3000VA installed into my van. I have got a leisure battery to power the inverter. When I turn the inverter on all 4 LED lights flick on and turn off instantly. I have checked the battery with battery tester, all is ok. Inverter doesn’t power up


0 Answers

ENtstörung Victron 75/15 MPPT

Guten Abend,

ich Betreibe ein 120W Modul und eine 100Ah Solarbatterie gemeinsam mit einem Victron 75/15 SMART Laderegler. Den Lastausgang habe ich auf einen Philipi Sicherungskasten aufgelegt. Hier gehen dann entsprechen die 12V Steckdosen, Lichter, und Autoradio ab. An der Steckdose habe ich heute eine Verstärker (Teufel Rockster) angeschloßen und über diese Verbindung wurden sehr starke Störungen eingeschleift das dieser erst brummte und dann anschließend abschaltete. Gestern bei bedecktem Himmel gab es keinerlei Störungen bei gleicher Konfiguration. Kann es sein das auf dem Lastausgang nicht entstört ist und das pulsen der Batterie hier übertragen wird?

Gestern war die Last höher als die Einspeisung am Solarmodul. Ich überlege gerade hier einen großen Kondensator aufzuschalten um diesen Lastausgang zu entstören. Kennt jemand diese Phänomen oder hat schon einemal jemand den Lastausgang im Oszi betrachtet?

Andere Vorschläge?

Liebe Grüße


PV_AxElli asked
PV_AxElli answered ·

2 Answers

3 phase generator used in single phase off-grid system with 3 parallel Quattro 48/10kva

Hi Guys,

Just would like to know if it is possible to use a 3 phase generator charge feed input into 3 Quattro's that are in single phase parallel arrangement? ie use one phase per Quattro to charge DC onto common DC bus connected to BYD 30kw system. cheers

Gannos asked
Matthias Lange - Service Team Döbeln DE answered ·

1 Answer

Dual Throw Circuit Breakers

I am looking at a Victron MultiPlus 12/3000 on a yacht. I currently have a little baby Pheonix inverter. It will be shore power connected and invert from the the battery house bank.

I seem to vaguely recall when I researched inverters that one of the switches on the circuit breaker panel for many other brands was dual throw - but that Victron Inverters didnt need to worry about this (was it because Victron inverters and phase match shore power and inverted power?)

Have I remembered this correctly - that I dont need a dual throw breaker?

bigal asked
ejrossouw answered ·

1 Answer

Installing an Orion-Tr Smart DC-DC charger non-isolated

Hello, I intend to use an Orion-Tr Smart DC-DC charger non-isolated as the battery to battery charger in a motorhome that uses a Schaudt Electroblock EBL29 and currently has 2 Exide GEL 80Ah leisure batteries fitted. Can I install the charger horizontally rather than vertically as suggested in the manual?.

Thank you


Andrew Wills asked

0 Answers

New quattro install trips pylontech battery

Hi all.

Please could you assist me or point me in the right direction.

I have a new quattro 8000va and 1 x 250/70 smart solar mppt and 1 x 150/60 smart solar mppt and 1 x venus GX. I'm trying to power up everything with a pylontech 3.5kw battery, so that I can configure the settings. I am able to power up the mppt's and venus no problem, but as soon as I try to power up the quattro, it trips the battery alarm. The battery is well charged with about 60-80% SOC.

Many thanks in advance.


jasonvanwyk asked
EwaldErasmus answered ·

5 Answers

Isolation transformer earth connection

Hi all,

Just confirming here that when my boat is floating on the water there should be a link from the input PE terminal to J34a.

So, the earth wire from the shore power supply flex is connected to the input PE terminal and I make a small wire up with a female spade connector from this input PE terminal and connect it to J34a?

This transformer is not the auto 115v - 230v switching model

Many thanks

Metal_snapper asked
SoCalSker answered ·

3 Answers

BMV 712 Smart Monitor dosnt work


Hey ,

I have Problems with my BMV 712 . Im Sure that i haf install everything correct, but the Monitor dosnt work.

Energy flows.

The battery Pol of the Shunt is connected with the minus Pol and the load Site of the Shunt is connected to the System ground.

+B1 -> Battery1 +, +B2 -> Battery2 +

I send the Monitor back, but the seller says it Works. He Send another Shunt, Same Problem ...

I Switch the phone cable, still nothing.

I tyried ist with other cables for the +B1/B2, also nothing.

now i Test the „Energy Flow“.

Shunt - to Shunt +B1/B2 has no Connection, i was mit able to get the 12.8V.

Anybody and idea ? What did i wrong?

Sorry for my english, thanks for help !



Northernlightss asked
Northernlightss commented ·

5 Answers

Help choosing charge controller and what will i need to change to maximize solar charging

I have a 2021 eclipse attitude rv that has (2) 210 watt solar panels roof mounted, with a Zamp Solar ZS-30A 30 Amp Digital PWM Solar Charge Controller. This trailer is new to me and have tried to do alot of research on solar/ chargers. I was looking at the victron 100/50. I am not sure if this is the correct choice, I am currently seeing 30 amps of charge rate but will not keep that up until the lifepo4 battery is charged, it will kick into float very early in my opinion. I also plan on adding (2) panels but not for a awhile. also what wiring changes will i have to do to the solar panels to use the victron charge controller? thanks for nay help

craigjz2 asked

0 Answers


Hello everybody,

I have a Victron Quattro 5kVA/120V setup with a MPPT 250/100 and lithium batteries BYD B-BOX PRO 10.0. AC INPUT 1 has mains electricity of the grid.

I want to use the AC INPUT 2 not with a convencional generator but with the output of a eolic system that is installed in the same place, with another battery bank. The inverter output of this system is: 8kW / 127V single-phase (máx output current 63A).

I didn't find any question here about a hybrid system (solar+eolic) like that. The Victron setup will be the same as with a generator in the AC INPUT 2?

Is there anything else to pay attention besides the configuration?

Bruno Santos asked
Paul B edited ·

1 Answer

Changing the Administrator of a VRM installation


I am trying to add a new installation on the VRM portal. It is the Victron Ethernet Remote.

After entering the IMEI device and pressing the "Request Access" button, the following message is displayed:


How can I find out who is the administrator of the device and his email and add myself to the administrators?

Dmitriy.Simonenko asked
enjytme answered ·

3 Answers

Products and configuration to support both 110V/220V outputs using single lithium battery bank

I'm the planning phase of purchasing a new 5th wheel and equipping it for boondocking on a regular basis. The manufacturer I'm looking at purchasing just released an option for using a residential LG mini split HVAC system, but this systems needs 220V power. The rest of the coach would use 110V power. Is there a Victron product / configuration that would provide both a 110V and 220V outputs yet inverting from a single Lithium battery bank that could be charged via shore power and/or a generator? Thanks in advance for the assistance.

TerryJ asked
TerryJ answered ·

2 Answers

12v system cable Size

hello guys have build a system , on paper so far, have the parts just need to check cable size and that everything is correct, open to any info/ suggestions 22 March for Graham-Page-5.pdf

Stavarda asked
SquareJ answered ·

1 Answer

Mounting multiplus 500va-1200va inverter

Hi I am looking to mount my multiplus 500 inverter/charger and am really tight of space. I was hoping I could mount it downwards directly to the floor, rather than upright - is this possible? Can't find anywhere in manual.



Georjie Adams asked
klim8skeptic answered ·

1 Answer

Victron set up battery drain

Hello All, im looking at building a system very similar to this but looking at it will the Solar be charging the Starter battery? 1.2KVA-12V-MultiPlus-230-Volt-system-example-with-Argo-Fet-and-MPPT.pdf

Stavarda asked
Harold answered ·

1 Answer

switching between shore power and Multiplus 12/3000

Hi all , looking at building a system with a 12/3000 Multi-plus and battery bank, Question is will I need to build a switch into the system when i hook up to shore power or will the Multi-plus automatically sense shore power is connected and switch its self? and the second part is shore power fails will it auto switch or will i have to manually swithc back ?

Stavarda asked
Justin Cook - Bay Marine Supply USA commented ·

2 Answers

Multiplus Compact 12/1200/50 pulsing in inverter mode

My unit seems to charge batteries ok via a generator. However, when I turn off the generator & run unit in inverter mode it seems to 'pulse'. i.e, it produces mains voltage intermittently in pulses of 10 seconds then stops momentarily before re-commencing. Any ideas? Thank you

Rockydog86 asked
Daniël Boekel (Victron Energy Staff) answered ·

1 Answer

10KVA Quattro Inverter -

Question. 1
My 10KVA inverter periodically changes over into inverting mode even though the mains
power supplying the inverter is not switched off? my supplier (installer) says this is because the
incoming AC supply from the municipality is 'Dirty'. AC waveform seems ok to me.
+- 220v to 240v continuous.

Has anyone had or seen this behavior before?


Question. 2
My batteries have also been giving me issues lately and the supplier replaced 2 of them last week
since they failed their load testing cycles
These are 8x 12v Victron AGM batteries. 2 x (4 x 12v) in Parallel with each other.

I noticed on one of the charging cycles after we had a municipal power failure the Batteries discharged to around 50v then the power came back on but the inverter tried charging the batteries at 52v this charge voltage should have surely been between 55v to 57v ?

Has anyone had this behavior before ?


Thanks in advance

shaunp asked
JohnC answered ·

2 Answers

Filax 2 Problems and Faults

Hi there,

I have a new Phoenix 12/1200 inverter powering a 140 watt computer setup through a new Filax 2 transfer switch.

The inverter is connected to the priority source side of the Filax 2 and shore/mains power is connected to the alternative source side.

This works fine but I have noticed some odd quirks of this setup.

-Both power sources need to be connected and ON for the Filax to successfully begin feeeding power from the inverter.

-If the whole system is off (mains power disconnected, inverter off), after switching on the inverter, the filax will not allow current to flow from the inverter until the mains is on.

-Leaving the inverter on all the time fixes this issue, but has a 2 amp standby current draw.

-Reversing the setup works fine! Mains to Priority, Inverter to Alternative. Everything works perfectly.

So, i suspect the issue lies with the inverter/filax combintion. Perhaps the filax is too sensitive and detects a voltage/frequency drop of the inverter first startup and cuts out. The inverter runs 16mm2 power cables which are 1m long.

Oddly if i disconnect all loads from the inverter (monitors etc) the filax will successfully start without mains power connected, but after connecting loads carefully, it disconnects. Connecting mains power 'reassures' it that everything is ok and then all is fine and cut-in cut-out works perfectly.

The irony of this fault is after a full power down, you would need to steam back to port to connect to the mains, to reconnect your inverter.


Puddles asked
Puddles edited ·

8 Answers

Torque specs

I've seen this asked before after searching without an official answer from Victron so I'll ask it again. How do we find the proper torque specs for Victron products? I need them for the 500a shunt and the SmartBatteryProtect 100a and I can find values in any of the documentation. Every other product I am using for my install has proper torque specs in the installation documentation, I am really surprised its this hard to find them for my Victron products.

jwlynch82 asked
Justin Cook - Bay Marine Supply USA answered ·

1 Answer

Wire gauge recommended - Orion Smart TR and 100/20 Smart MPPT

Planning out my install for the above two components. The Manual for the Orion calls for 10mm2 wire (<2m) and the MPPT calls for 6mm2 10AWG. When I look at Ancor's site for marine wire, 10AWG appears to be 5.26mm2 with a max amps of 60A. There is no 10mm2 wire so my choices are 6AWG (13.3mm2; 120A) or 8AWG (8.37mm2 and 80A) the 8AWG seems to be more than what the Orion could possibly output; though on the input battery side, the alternator could in theory output 120A.

1. Can the orion even accept 6AWG wire as into the input?

2. Would it be acceptable to use 8AWG on the Output side (with appropriate fusing)?

Am I misunderstanding the recommended cabling?

thebarold asked
Justin Cook - Bay Marine Supply USA answered ·

3 Answers

New Installation for Home


I am investigating options for an installation of solar panels and battery storage/back-up. I live in Johannesburg, South Africa and with the current power challenges this seems like a suitable plan.

However, after consultation with a few experts I am alot more confused as it seems like standard configurations are only being presented.

My questions are:

1. Is it possible to have solar panels installed for the purpose of supplying day time usage only to the entire household. We currently have an average daily consumption of 45kw , about 60% used during the day.

2. As part of the system in No. 1 above, can a battery pack be added to the system that would only serve as back up for essentials like a few plugs and lights.

Currently I have a 1500w inverter with 2 x 400A batteries connected to my lights only. This system has been designed to automatically switch on when there isnt power.

Hope to have receive some help.

Thank you


niren asked
SolarHack edited ·

2 Answers

what is the correct fuse size for a 24/5000/120 multiplus

Good morning all. I have a multiplus 24/5000/120 going into a battery protect 220 then into a 300 amp fuse and then into a Tesla 5 KW battery module. Maybe I'm doing the math wrong but as I understand 300 amps x 24 volts should be good for a 7200 watts?

If I over load the AC side of this unit, will that cause the issue?

Next question... Is the 220 battery protect adequate for this setup?


bruce32466 asked
Justin Cook - Bay Marine Supply USA answered ·

3 Answers

Install bmv 712 with redarc bcdc1240

Just purchased the bmv712, trying to install on my motor home but I think I’m overthinking it. I have a redarc bcdc1240 charge controller, which runs my solar and converts my alternators 24v to 12v while the bus is running.

Question is; 1: is the instal as easy as cutting my earth wire, and running end to the shunt

2: does the bcdc charge controller earth have to be connected to the shunt directly?

Thanks in advance guys and girls

Trip asked
Trip edited ·

1 Answer

Help wiring up Temp Sensor and 2 + leads on BMV-712


I am wiring up my Victron BMV-712

I see in the instructions that the Temp Sensor + needs to plug into B2 on the Shunt, where does the Black wire lead go on the Temp sensor plug into?


OK, I get it ... the original POS Supply Cables are not used because the Temp sensor wire doubles at the POS cable when used.

Bruce Richard asked
Justin Cook - Bay Marine Supply USA answered ·

3 Answers

galvanic isolater and Phoenix Multiplus inverter


I have just moved into a Marina and I need a little advice. We have shoreline power going via 13 amp socket into the Multiplus inverter, which is a Phoenix Compact Multiplus 12/1600/70. This then runs out to a consumer unit for AC.

Do I still need a galvanic isolater or will the inverter do this for me? If I do need one where does it need to be fitted? between the consumer unit and the inverter or between the 13amp socket and the inverter?

Any help much appreciated



Matt Shea asked
Mike_G answered ·

3 Answers


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