We had some solar panels & an inverter installed recently. Every time the inverter is turned on (after maintenance or with the first light of the day) it has to synchronize its generation phase with the grid, and it is easy to understand.
But why does it take around 5 minutes? When I asked the guy installing it, he said "it is some sort of standard, every inverter takes around 5 minutes to sync" and had no idea about the reason.
The inverter has 60 changes per second to sync with the grid. Sometimes it might be needed to observe the grid but still, 5 minutes is too much time and missed opportunities to synchronize:
60 Hz x 60 seconds x 5 minutes = 18,000 cycles
Am I missing something?
My inverter is Delta SOLIVIA Solar Inverter 3.8 TL.