Big differences between the 3 Multiplus charging power

3 phase system with 3x Multiplus 48/5000. Connected to the grid, gridmeter en PV system with meter on AC IN. On no 3, there is een small load on AC1 out of 400W. Firmware V560, total of all phases, without battery life, restarted VE bus system, restarted the whole installation.

The Problem:

During charging, no 1 and 2 charging with 17A each, no 3 is discharging with 15A. One hour later the situation was changed no 2 and 3 charging with 17A and no 1 was discharging with 15A. A half hour later, all 3 charged with the same numbers.

I don’t understand this

Hi thats completly normal, nothing to worry about

I don’t have any experience with 3 phase.

But sounds like system behaves the same as my own system with 4no. Mppt’s.
System cycles mppt’s to provide required power.

As you when system was first installed, i thought i had a fault, as mppt’s where not evenly supplying power, unless power required was maxing out mppt’s.

All is good, as long as system is charging / discharging as required, cycling of power from individual items i believe is there to simply cycle load across individual items in system, which is good.