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Mrakes

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  2. Axpert inverters in parallel

    Mrakes posted a topic in Inverters
    Hello! I have 5X 5kVA axpert inverters connected in parallel (1 master and 4 slaves) running a PV home solar system with batteries. When the AC in is off the system is operating well with the inveters' output frequency of 50 Hz, but when the AC in is switched on, the inverters' frequency suddenly drops to 40 Hz and when i switch off 3 inverters the frequency peaks to 49.6 Hz and this is an issue because the grid frequency is 50 Hz. Any idea what could be the issue here, please help?

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