Technical Support

I wondering if someone can educate me on the below. So currently I have 8kva single phase Sunsynk hybrid inverter that is connect to my DB Board with 63A breaker. Recently the breaker tripped when we accidentally went over 8000watt load.

I have noticed the following:

a. The inverter showed no fault error.

b. I dropped the load & moved the inverter / grid changer over switch from inverter to grid. I then reset the breaker and the breaker did not trip.

c. However the breaker keep tripping when I move the changer over from grid to inverter - even with minimal load.

d. I would of understand that I have a faulty breaker if the breaker keeped on tripping on both changer over switch on inverter and grid at the same load. However this is not the case. It does not trip with the change over switch set to grid, but does when set to inverter.

I have the following question based on the above:

1. I understand that my interver is limited to only being able to supply it rated load of 8000w and 2 times its rated power for 10 seconds. However my understanding was that in a scenario of a load of 9000w the inverter would intelligently only supply 8000w and the additional 1000w would "pass through" the inverter coming from the grid and that the inverter would not trip. Is my understanding incorrect?

2. Why do you think my breaker tripped?

3. Why do you think my breaker does not trip when the my change over switch is set to to grid, but trips when my change over moves to inverter with a small load?

4. Any general advice you would give my scenario?