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Hallo,
I have changed my one phase system to three phase system with three multiplus2, 3kva version. Using one battery, CCGX. My problem is the grig is connected but does not want to go thru. Acting like a off grid system. Any help? See pictures of my settings. Ess assistant is in each multiplus.
Thank you for help.
Update: Do I need a current sensor installed to each Multiplus 2 to connect the mains instead of being in inverting mode?
Hello,
Check the phase sequence /rotation /wiring /
If the correct L1 inverter is not connected to L1 of the grid, L2 to L2 , L3 to L3 OR if the grid for some reason is rotating anticlockwise. this will be the symptom
if you do not have access to phase rotation meter and verified the wiring a simple way to determine if this is the cause is to swap any two phases say L2 and l3 .i..e connect L2 of grid to L3 multiple and l3 of grid to L2 of Multiplus
Hallo, I have swap the phases like it should be, L1 to L1 but still the same. I am getting #11 grid relay test fault when wants to connect to grid. In the same wiring, (had two systems one on one phase with Multiplus 2 and with Venus and another with Multiplus 5kva on 2 phases with ccgx) all worked. Have installed ESS like on set ups before. Btw do I need a current sensors? I don`t have them. Thank you
Hi Badumi, in swapping the phases, did you actually change them? what ones were changed?
Did you read this?:
https://www.victronenergy.com/blog/2019/02/19/venus-os-v2-23-ve-bus-11-details-small-fixes/
About the current sensors: it is all in the manual(s), it depends on how you have installed things. If you want a good answer you'll have to provide a diagram of the system.
Did you try swapping two phases?
Phase rotation error is what is usually the cause of this (not accepting grid)
-edit- @Anil Ghatikar was faster than me :)
