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This question was closed Dec 19, 2023 at 09:14 AM by Alexandra for the following reason:

question

padraig-buckley asked Dec 18, '23

DC Earth Fault - Multiplus 2 - Protection sensitivity

Hi,

I am using an off grid (PV + Battery) system with a Multiplus 2 inverter - (MultiPlus-II Inverter/Charger 48/15000/ 200-100) in combination with 5 MPPT (SmartSolar Charge Controller 250/85-Tr).

I am wondering about the sensitivity of the Inverter internal ground fault protection in the event of a high resistance fault on the DC system (cable becomes damaged and small earth leakage current flows).

What would be the minimum earth leakage current the inverter could detect and is it possible to attach an alarm to this protection to notify the operator that there is an issue?

Thanks a lot,

Padraig.