My system:
L1 mp2 5000 ( ve.bus)
L2 sb4000 lt20 ( ET112)
L3 SB4000 lt 21 ( lan modbus tcp)
Grid meter Vm-3p75ct
My probleem:
ET112 can only be conected to the phase the multiplus uses ?
Where can i set the ET112 that’s mesuring my old sma inverter (without modbus or internet capability) to the right phase
And im not allowed to wire up the inverter to my mp2 5000 because in belgium we are only allowed a 5kw inballance
If it is configured as a mains sensor, the system always starts from L1, the phase on which the Multi is located.
However, if you configure the Et112 as PV, the system does not care because it is calculated and displayed as PV.
Not grid … but as PV
you make the setting in the console under the Et112 … and where it is connected … AC in or AC out
Thanks just wired it up so tomorrow we will see how it behaves
My sma “lt21” can be asigned a phase so that got me worried
Thats not what i want
Do you see the issue my “load” side of the dashboard is completely wrong
The ET112 is completely useless in my system like this
Its destructive to the ess calculations
The ET112 is not completely useless … you can only use it as a single-phase meter on L1 … PV or grid . The system always assumes that the meter is on L1 … the phase of the multiphase … is used.
The meter counts everything correctly … but the system always includes its values in the calculation of L1 … which is why the PV yield also has the addition ‘L1’
If you have connected it to L2, the Et112 does not work for the correct calculation
Im not allowed to conect the solar panels to the same phase as the mp2
So what i want to know is if their is any place i can change this phase
Or if victron has been made aware of this isue?
And if they are working on a fix ?
I already found 6 more issues in the comunity directly related to the ET112 inability to messure a specific phase
But this is also how it is described in the illustrated instructions … ALWAYS ON L1 AND THE PHASE OF THE MULTIS … this is not an error on the part of Victron but an incorrect use on the part of the customer … I use a 3-phase EM24, ET340 … here you can choose the phases …
True a 3f meter to mesure a single phase load does work
Its just a waste of money and space in my fuseboard
the EM24 would be the right meter if you connect the Multi via L1 and a PV inverter via L2 …You can set this function here
Nope thats not what that setting means
It means you can use phase 1 as grid meter and phase 2 of the em24 as pv inverter meter
If they are both bridged together on L1
I agree with you 
… I really thought it was a “real double function” on several phases
Just a question am i right that setting the phase on the ET112 would be a great feature
that would be a small thing that would make life easier for many users …
Same problem over here. ET112 connected to an AC coupled PV inverter on AC-OUT-1 on L3 but because it’s forced to L1 in the software, it miscalculates my critical loads in VRM.
I hope this can be solved somehow
Hate to burst the bubble but your best option is to buy the et340
Or if you know someone at victron suport let them explain why this is so difficult to add a single setting
Still no news on this topic? I’m new to the Victron systems and just came across this problem. I have 2 ET112 meters for monitoring solar on phase 2 and phase 3. The ET112’s allocate this to L1 and there is no way to change it. It feels a bit silly to throw these meters away and get the ET340 just because we can’t change this setting.
You and loads of other people want this
Maybe we should all email suport about it
YES !! all email support to fix this issue… I also want to connect my et112 to L2 in Cerbo settings. I do not have space in my switchboard for another et340…
Calculations don’t make sense in ess with et112 attached to L2 or L3…. Due to correct phase power distribution i can’t connect to L1 with my solararray.
So @ VICTRON; please make this option available. It was also hard to find that et112 only works in software on L1.. Maybe good to make an extension in the manuals ?
AI Overview
The issue you are experiencing is
a known limitation of the Victron ET112 energy meter
: it is designed as a single-phase meter that the Victron GX device and VRM portal software inherently default to L1. The system assumes the meter is installed on L1 and uses its values in L1 calculations, regardless of the physical connection point (L2 or L3).
Explanation of the Issue
Software Limitation: The Victron software (Venus OS on the GX device and the VRM portal) currently does not offer an option to manually change the phase assignment (L1, L2, or L3) for a connected ET112 meter.
Incorrect Calculations: When you connect the meter to L2, the system still registers the measured data as part of L1. This results in incorrect AC loads/generation calculations on your VRM dashboard for all phases, especially in a three-phase system.
Solutions
To correctly monitor the L2 phase, you have a few options:
Move the load/PV inverter to L1: The most straightforward solution is to physically relocate the single-phase load or PV inverter you are measuring to the L1 phase, where the ET112’s data will align correctly with the system’s L1 calculations.
Use a three-phase energy meter: The recommended solution for multi-phase systems is to use a three-phase energy meter, such as the Victron ET340 or EM24. These meters allow you to select or automatically configure which phase they are measuring within the GX device settings, ensuring accurate monitoring across all phases.
Physical workarounds with a three-phase meter: If you use a three-phase meter like the ET340 to measure a single-phase load on L2, you may need to bridge the L1, L2, and L3 voltage inputs together on the meter’s terminal to provide the necessary reference voltage and ensure correct readings.
Victron is aware of this limitation with the ET112, but it is typically considered an installation issue (incorrect meter used for the application) rather than a software error. Using a three-phase meter is the intended solution for multi-phase monitoring.
