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Image CaptionWe installed nine numbers of Quattro inverters with a capacity of 15kVA, accompanied by seven Smart Solar MPPT 250/85 units and a Fronius ECO 27kW inverter. Upon reviewing the cerbo datas, it's evident that, even without taking power from grid for a load, the system draws a higher current from the AC input while producing less wattage. For your reference, please find the attached images. Please help me to understand what is the issue.
Is the fronius on the output?
Is it charging batteries at this time?
If you disconnect the grid does it read more normally?
Thanks for your advice , but we need the excess power to supply other loads on input side , we cant just disconnect Grid.i want to know why it is like that what is the permanent solution for this issue.
Hi there , Alexandra has asked, this information as its needed to give you a hand and a direction to look at , the issue will be a setup issue more that 99% likely, also a diagram showing your setup inc how the grid tie units are connected and what size they are,as well ie single phase or 3 phase. and have you connected all the ve direct outputs from your 7 mppt units to the cerbo and how these are connected, and if not then how is the system reading the output from the solar mppt units plus a few pictures of the installation would be helpfull
i am presuming that you are paralleling 3 x 15va units and each one of these sets of 3 have been connected one set to l1 another set to l2 and the last paralleled set to l3, and that these have been configured correctly. into a 3 phase setup
are they all on the latest 506 fw for each quattro and has the cerbo and mppt units been updated as well
also how is the grid tie unit connected and how is its output information been added to the cerbo
and a full list of all items installed.
this is a max system output of 45va per phase so total output is 135VA
We cant help unless all the systems setup information is supplied.
1.It is 3 phase configuration ,all properly configured as ESS.
2.among 7 MPPT connected via CAN bus -3 nos , ve direct -4 nos
3.fronius is 27kw pv side loaded each 30kw
4.yes all the inverter and MPPT including fronius and cerbo in latest firmware. fronius is connected output of victron inverter.
Please let me know any other information needed.
A random thought.
The fronius X 2 are programmed in what position in the system?
I have seen systems where the current is added to the input, they are on the output but the system has been told they are in the input.
So check inverter position in set up and also what is metering the power coming in in system set up.
Image Caption
Dear Alexandra,
please find the attached screen shot for the ac output position
