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Energy Meter for 3phase 150A with CTs for ESS System

I am struggling to find a way to connect a meter for 3phase ESS system which is greater than 100A. None of the Carlo units are able to use CTs except for the Carlo Gavazzi EM24DINAV53DISX which doesn't seem to be available anywhere. Does anyone have any ideas on this please.

greg-walton asked
Matthew Walsh answered ·

1 Answer

Energy meter RS485 / pulse


I have ESS System with the energy meter ET112.

Now I want to connect my Daikin system using BRP069A61 but this system need pulse counter

ETT12 don't have pusle counter and in supported list Energy Meters start page [Victron Energy] it's only Carlo Gavazzi. If I have check well, it does't exist model with RS485 and pulse output.

The ABB B21 212-100 model recommanded by Daikin have RS485 and pulse but not in supported list of Victron

Does ABB model will work with Victron ?

Does Victron will support ABB model ?

erthyp asked

0 Answers

Interface with DSMR (Dutch smart meter)

I'm very interested installing a Multiplus and I completely understand you need te measure the input / output power of the grid. Now, as a lot of people in Belgium allready have a smart meter with a P1 output (serial) using DSMR protocol, for me it seems logic to use that instead of depoying another meter...

Anyone done this or knows about compatibility ?

geertv asked

0 Answers

EM24 Smart Meter read out over Modbus TCP/IP


the Smart Meter connection to the Victron controller via Modbus RTU (RS485) is only wisely in case you have a short Way between the Smart Meter and the Victron Controller.

In case you have a long way or different buildings the connection over TCP/IP is required.

To prevent to install a separate RS485 Bus Cable. (using structured cabling !)

Installation Example:

#######Buildings-A############ ###Buildings-B###

EM24 -->RS485-->Modbus TCP Gateway---------TCP/IP---------------->CerboGX

Now the Question:

How can i add the Smart Meter Connection via Modbus TCP/IP to my Cerbo GX?

(FW 2.60)

jxa asked
sviwowa answered ·

1 Answer

PV throttles after meter added

Good morning!

I've got a client where they have a multiplus 3kva, 2x mppt chargers, lead batteries..

The installation is done in such a way that non essentials are split before the inverter, essentials then go through the inverter and then to it's 'backup db'.

The system was setup up that the dc chargers feed back excess pv, essentially supplying upstream to the non essentials, there was no grid meter so if non essentials was not enough it would actually start feeding back to the grid.

When the client contacted me they wanted to upgrade but have no consumption data as there was no grid meter so non essentials wasn't monitored. I recommended we install a grid meter to get total consumption data and work from there. But now the system stopped feeding back the pv. The pv only keeps the batteries charged, then the non essentials gets fed from the grid and pv gets throttled, this is obviously not right as it should feed the essentials and excess should then feed upstream to the non essentials. The system is set up with ess and batteries to discharge to 90%, then kept for backup. Option to feed excess dc pv to grid is checked and dvcc is on and svs is on. Please assist if someone knows what the issue could be? Attached is a screenshot of where the pv was supplying total essential loads, and since the grid meter was installed it dropped pv yield to only charge batteries. Also an image with summary of current installation.



francois asked

0 Answers

PV meter on the output of inverter data


I have an ESS running with Cerbo GX, Multiplus II, and an AC coupled inverter on the output of the multi. Until recently i didn't monitor PV production but today i installed an EM111 meter, it's communicating fine however I cant configure it that its connected on the output of the multi. I select the position of the meter "AC Output" but its reverting back to "AC Input 1" once the page refreshes.

This causes "AC Loads" calculations to be incorrect.

I did set up in ESS assistant the PV inverter on the output and by the looks of it the generation is being counted twice.

Thanks in advance for assistance




apple047 asked
apple047 answered ·

1 Answer

consumption is showing proportional to PV inverter production


Hi a customer has the following system

multiplus-II 48/3000/35-32


zcell battery

fronius primo connected on grid side of multi

dc coupled mppt connected with

meter is ET112 connected to ccgx via usb rs485 cable.

all connected on VRM with remote access available

since the start of the year the calculations and energy flow have been wrong, at first I went to site expecting the customer to be using more electricity, but when I turned off all the circuit breakers apart from the energy system the ac load value should have been zero but instead showed around the same value as the solar production.

The multiplus was also making some strange sounds.

i have tried updating firmwares on ccgx, fronius, multiplus

see attached screen shots

any help would be greatly appreciated

Thanks Tom

Thomas johnston asked

0 Answers

Install Victron ET112 to monitor inverter usage

To no avail, I looked for videos or more thorough instructions beyond the simple diagram in the manual. I have installed the VenusGX to monitor the solar/battery and have the RS485- USB cable to connect the ET112.

Has anyone used the ET112 to monitor power usage of a non Victron inverter? My question is, I have 2/0 cable between my battery bank and the inverter and I do not see how to connect it in this system. AM I missing something here?

Any input would be greatly appreciated.

m-beach asked
m-beach commented ·

1 Answer

Consumption on non-backup phases under critical loads


I have a system installed as per below:


The issue that is occuring is that the AC loads in L2 / L3 are showing up in the critical load display and my PV inverter shows as just one figure where it used to show per phase. This occurs during the day when there is PV being generated.

At night time, it appears to display correctly as per the below screenshots:



My ess settings are as follows for the site:


And my energy meter settings are



I would like to know if it possible to correct this with the current setup on site?

Matthew Walsh asked
Matthew Walsh commented ·

1 Answer

MultiGrid and three ET112 at ACout1- how?

Changing my setup I'd like to connect three PV inverters to the ACout. So far had two ET112 to the ACout, which worked well. I.e. I don't see the individual PV values but the sum of both, which is OK as I work with the Modbus data mainly.

Today I tried to add a third ET112, so I changed the Bus ID with Gavazzi Software. The meter is recognized by the Venus, however - I cannot assign it to the ACout1 like the other meters.
It offers the tickboxes ACout1, ACout2 and ACin but If I tick ACout1, it defaults back to ACin.
Is there a limit of two meters at the ACout?


PS: don't worry about the factor 1 rule, my three inverters never get peak power at the same time.

vicky asked
matthias-roetzer commented ·

2 Answers

ESS without power meter


After listening to the "ESS systems" event I am still not sure if I can have ESS system without Power Meter when my PV inverter is AC coupled but it does not talk to GX device.

I thing, for the PV inverter that does not communicate with GX device, I would need to measure PV energy generated by this inverter with a Power meter that is connected to GX device, so the system knows how much energy is getting from the Sun.

Am I correct?



marekp asked
marekp commented ·

2 Answers

AC Coupling with non-Fronius inverters and export power limiting

Hi All,

Here in South Africa we are more often than not, required to prevent power being exported beyond the Meter (Grid).

We often encounter homeowners who have already invested in a solar power system, with some form of grid-tied inverter installed.

The typical upgrade involves installing MultiPlus or Quattro Inverter/Chargers with some form of lithium battery bank.

The question arises with regards to how we incorporate the existing grid-tied inverter?

If it is not a Fronius inverter, then we cannot use the "Fronius Zero Feed-In" functionality through using a single energy meter (Carlo Gavazzi ET112 or ET340).

If we retain the existing grid-tied inverter's export limiting device (current sensor or energy meter), and continue to implement an energy meter for the Victron system, then how should it be set up? Which device should be installed first in line? Should we set a buffer/threshold on one of the systems to ensure that they do not compete to achieve grid-power = 0 (or other set point)?

I foresee that the two different export limiting control systems will compete against each other and may result in instability and/or poor performance.

Any insights into this?

Nicholas Herbst asked
Matthew Walsh answered ·

3 Answers

Where should I locate the energy meter ? (3phase)


I am working on a residential project.

There is a 3-phase supply to a home with a main consumer board, and a sub consumer board in a garage (not in close proximity to home). The PV installation will be on the garage.

Must the energy meter sit on the feed for the main consumer board, or will it be ok sitting on the feed for the garage consumer board (a branch off the main supply)

I believe it must sit on the feed for the main consumer board, otherwise any loads from the main consumer board won't be recognised/noticed if its sitting on the sub board in the garage.

Please confirm.

Thank you

next-day-solar asked
markus answered ·

1 Answer

Dual USB devices on Multi II GX?

Hello All,

I am busy quoting client on an Easysolar II 3kVA device and I want to add 2 x USB devices to the system, ie, a Wifi long range module as well as an ET112 meter for the "non essential" loads.

Now I have heard that one cant add 2 x USB devices onto the single USB port of the Easysolar? In another installation we tried a USB hub, but it kept on freezing the Multi, was a big problem.

Can anyone clarify or assist with another way around this.

All the best.

leonb asked
klim8skeptic answered ·

1 Answer

No modbus unit ID - carlo gavazzi gridmeter

Carlo gavazzi ET340 is connected but there is no modbus ID.
I see meter firmware version 3.
Every 5 minutes meter connects and disconnects.

I already tried a new color control.

I already reconnected the 3 cables that come from the USB.

Anyone any tips?


perry-westphal asked
markus answered ·

1 Answer

Multiphase Regulation and ET340 keeps dropping off

Hi guys,

Just wondering if anyone has the problem with an EasySolar II 48/3000/35 + ET340 and 5m RS485 to USB adapter that keeps connecting and disconnecting?

Also multiphase regulation doesn't seem to work. Won't discharge battery to compensate for energy usage on other phases.


I have ESS Assistant on with these settings:


Any ideas?

Johnson Lee asked

0 Answers

Energy meter and no inverter no solar data on VRM

I have 2 energy meters Em24 one on grid and one on solar cells and no inverter. I get no solar yield on VRM

jens-due asked
warwick answered ·

2 Answers

How do I see energy usage monthly (the most accurate way)

Hi ladies and gentlemen. I need your help here.

I have installed EasySolar 48/5000/70-100 MPPT150/100 for my client. I need to charge them the electricity they use only. Every month We have to go there now and use the old power meter and go there manually write down their usage and charge them there has to be a better way.

1- something that integrates with VRM so we can bill them remotely without going onsite. This is pure off grid system nothing fancy. Accurately charge what they use.

thank you so much team.

aabshir asked
aabshir commented ·

1 Answer

ET340 no communication - SOLVED

Hello experts,

I am not able to establish communication in system of:

Venus OS (Raspberry pi 3)

Multiplus II 48V/3000 (external wired Current Transformer sensor connected)

ET340 Carlo Gavazzi


MK3 VE Bus USB cable

VE Direct USB cable


I am able to communicate to ET340 via recommended USB-RS485 interface with PC to Carlo Gavazzi UCS7 original SW. But no response after plugged USB-RS485 interface to Raspberry pi. Just immediately after USB-RS485 plugged to Raspberry the LED (red and green) flashes approx. 1 second. Power meter ET340 is not visible in system (Setting-Energy meters).

I have tried a lot of variants (Address, Baud...) a lot of Reboot but no communication at all.

What is wrong? Do I need to setup anything?

radim-1 asked
radim-1 edited ·

8 Answers

ESS multiplus 2 ET340 gridmeter keeps disconnecting

problem: gridmeter connect and disconnect randomly

modbus unit ID is not visible in menu:


problem in this video:


carlo gavazzi ET340.

3 x multiplus 2. (3 fase)

ESS with only ACin connected.


modbus unit ID is not showing.

perry-westphal asked
perry-westphal edited ·

0 Answers

Re the ET340 Grid meter and a GX Color control and VRM data displayed

Is there a way to get Frequency and Power factor to display on the GX or on the VRM graphs

Also the Gateway VRM does not seem to log the Voltage and amps in its graphs for the Energy meter, is there a way to turn this option on



Paul B asked
warwick commented ·

1 Answer

Sonde courant PV et sonde de courant réseau AC sur installation avec onduleur AC et DC

Bonjour à tous,

Je viens de finir l'installation d'une seconde production PV AC en complément de ma production PV DC avec batteries.

Voici un schéma succin qui représente mon installation. Je n'ai que des charges critiques connectées au Multiplus. Les autres charges plus gourmandes sont en directe sur le réseau.

Mon Onduleur Delta n'a pas de protocole de communication Victron je suis donc obligé de passer par une passerelle de type ET112 ou autre.


J'aimerais pouvoir connaitre deux choses :

La première, la production PV AC de l'onduleur DELTA connecté à l'installation et pour la seconde : la puissance soutiré ou injecté en tête de réseau EDF.

1 : Production DELTA.

Pour cette solution j'ai installé un ET112 à la sortie AC de l'onduleur puis connecté au CCGX (cercle rose ET112).

Dans le menu liste des appareils, j'ai défini le ET112 comme convertisseur PV sur ENTREE CA 1.

J'ai nommé l'appareil DELTA RPI 4Kva. Il est bien vue dans le menu du compteur d'énergie.

Dans le menu de l'ESS, le comptage réseau et sur CONVERTISSEUR/CHARGEUR.

Voici le CCGX :


Les données échangées sont juste. La puissance du chargeur PV et du convertisseur PV sont bonnes et les batteries sont utilisées. Par contre les charges CA et Critiques sont regroupées. Le convertisseur PV devrait plutôt être connecté sur le réseau plutôt que dans le Multiplus ? Mais cela fonctionne bien.

Si par contre : Dans le menu de l'ESS, le comptage réseau et sur EXTERNE

Avec de la puissance PV tout va bien.


Mais en l’absence de puissance PV :


Par contre les batteries ne sont plus utilisée ! même avec un SOC de 88% !!! Mauvaise situation !!!

Pourriez-vous me guider dans les paramètres ? Je pense que régler le comptage réseau sur EXTERNE ne doit être que si j'ai une sonde supplémentaire ? voir ma question n°2

De plus Je ne comprend pourquoi dans la liste des appareils j'ai une seconde ligne avec l'onduleur DELTA RPI 4Kva qui se trouve pas connecté ?

2 : La puissance soutiré ou injecté en tête de réseau EDF (cercle rose ??)

Je pense que pour connaitre cette information je dois ajouter un compteur d'énergie supplémentaire. Soit ET112 soit sonde de courant externe ref (CSE000100000).

Ainsi dans l'ESS le comptage réseau sera sur EXTERNE et lira le nouveau compteur d'énergie ?

Merci de m'apporter vos lumières sur le réglage de l'ESS. Si j'ai besoin d'ajouter ou de déplacer une sonde de mesure.


mika2a asked
mika2a answered ·

9 Answers

et112 energy meter with 120v

im in US so i have 120/240v power, I have a grid tied 48v quattro system to provide backup to critical loads + solar array which produces a lot more power than my critical loads need, i wanted to add et112 energy meter at my grid input and push power back to other loads but not the grid (seems pretty standard setup) so i ordered et112 + usb serial cable, it got here and on et112 it says 230v not 120v, manual states av0 part number is for 230v and av1 part number is for 120v, problem is that i cannot find this av1 part numebr anywhere, victron only shows one model number and doesnt specify voltage just amperage, so will 230v part number work on 120v system or do i need some special part? anyone can help i would appreciate it



audreez asked
shicks3 answered ·

3 Answers

ET112 Volts and Amps

My small system is 200amp batteries, CERBO GX, SmartSolar MPPT 100/30, BMV-712 with temp, and an ET112 Energy Monitor. Everything working great, connected to VRM with a Verizon MiFi. I can see the ET112 as wattage on VRM. Maybe not where I would like on VRM but can see it.

Is there a way to show Volts and Amps from ET112? Thank you.

shicks3 asked

0 Answers

Display Grid meter data on VRM advanced


I don't see my grid meter in the widgets menu on the advanced VRM page.
I would like to plot the voltage and current of every phase, is this possible?
I don't have a 3 phase inverter setup, inverters are only on 1 phase.



shaneyake asked
wkirby answered ·

1 Answer

Zigbee-usb setup failure


We've used the zigbee-usb to zigbee-rs485 to link the Et112 energy meter to a ccgx before. First time straight out of box followed the victron manual (ie just plug it in!!) and it worked.

Second one didn't so brought another set, worked

Brought another set didn't work but that was doe to the 2nd matched with old.

had another 2nd sent out, worked in the workshop, got to site and it didn't work

brought another set tried in workshop and doesn't work!

we've now accumulated 5 zigbee-rs485 and 2 zigbee-usb and have a system that's not working!

Brexit means I can't get another pair so somehow need to get a set working. Phoning suppliers and victron sales hasn't helped as no one appears to know anything about how the zigbee's work they just do!!

Obviously not all the time as there are other posts but no conclusions!

the symptom is the zigbee-usb plugged into the ccgz has solid active light only. Zigbee-rs485 has rapid flashing active led only.

random pushing of reset and function buttons on the zigbee-usb will put both lights out (pushing reset goes back to initial state of solid active light)

Pushing buttons on the zigbee-rs485 will change the flashing LED pattern but once pushed it doesn't seem to go back to the initial rapid flashing active LED only.

Does anyone know anything about these devices and what to do if they don't work straight out of the box??

duncan-lee asked
duncan-lee answered ·

2 Answers

Zigbee not making connection with EM24 and CCGX

Hello, i have a problem to establish Zigbee Connection from EM24 to CCGX.

The documentation of zigbee is horrible...

is there something known about the LED Behaviour of the zigbees?

my rs485 zigbee status:

Active LED: blinking rapidly

my USB zigbee status:

Active LED : on
TX/RX LED: blinking (maybe 1hz)

maybe somebody has an idea whats going wrong?
Or Maybe additional informations about LED Behavior or Button Functionality of zigbee?

best regards


Michael Schmidt asked
duncan-lee answered ·

4 Answers

Struggling with the final step.

I am setting up a system with a bmwi3 battery , multiplus ii , mppt 250/60 , mppt 150/100 and a rs450/100 . I was supposed to be doing this with my father in law who is an electrician but COVID has put paid to that for the moment. I have everything up and running the way I want it using the ESS assurant but I’m struggling with the final step of connecting it all to the house due to a lack of understanding.

I’m planning on winter months using a 4 hour cheap rate tariff to charge the battery from grid to complement the solar.

I have a et112 that I think ( correct me if I’m wrong ) needs wiring in between the main incoming fuse and my consumer unit. I’m awaiting a smart meter and isolator before attempting that :)

If correct I think I can work that one out o.k. However, I have some confusion over ac out and ac in. . I’ve read somewhere that ac in is bi-directional so am I simply running a cable from ac in to my supply after the Carlo gavazzi ? Or do I run a cable from ac out to there and a power supply in from my consumer unit ?

many help would be appreciated and if I’ve missed out any necessary information please let me know.

chapelier asked
chapelier commented ·

1 Answer

ET340: How to reset the total kWh counter?


I have an ET340 that was used as a grid meter. Then was moved to be the solar-meter now, while an EM24 replaced it on the grid side.

I would like to reset the ET340, so I know my solar yield.

I couldn't find information about this on the net. So I asked Gavazzi... they said, it is possible, but they are not allowed to tell my why, because of security reasons (if I would write what I think of them, it would violate our community policy ;-) )

So i'll try if someone here knows how to do it... maybe with the Gavazzi software?



danielw asked
tabrocky commented ·

2 Answers

Energy meter not recognised/displayed on color controller GX


Wondering if any one has had issues or can help with energy meter not recognised on CCGX.

I have a Carlo Gavazzi em 24 energy meter. It is over 65 amps so using CTs and 3 phase installation. There is a direct connection to the CCGX from the energy meter using victron RS485 to USB interface cable. Meter works fine.

Connected terminal 41 yellow, Terminal 42 orange and terminal 43 Black.

When connected there is only a solid red led light at the USB connection to the back of the CCGX, and will not find/recognise the energy meter.

I have since taken the meter to my distributor and we have experienced the same issues when connected at their work shop. Tried new RS485 to USB interface cable.

Would appreciate any feed back if others have come across this issue or have a solution. I understand this is the only meter compatible over 65 amps for the CCGX?



cbaelectrical asked
tabrocky answered ·

8 Answers


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