August 3, 20197 yr Good day all Please help me out here. Thought I did everything right... Have 2 x 5KVA Axpert II's connected in parallel with all required cables etc. All seemed fine when only one Inverter were on (Master) , slave still switched of but Inverter screen etc on. When I switched the second inverter on, seemed that there was a Neutral fault as my pc screen kept switching on and off. Stared fault finding by eliminating sources, PV, battery and mains, all on and off and in different sequences etc, no success. Eventually the loud expensive bang noise from the Master Inverter and a piece of semiconductor exiting the inverter... Please find attached my connection drawings and let me know am I missing something obvious. And a question: Should the AC Input and Output Neutrals be common-ed to solve my problem. As mentioned, all started when 2nd inverter output were activated. AC on site.pdf AC Main DB.pdf
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