Combined Fault Current

[Zyb]

Hi, Utility is asking for combined fault current for the PV System. anyone knows how to compute this?

 

[ggunn]

Hi, Utility is asking for combined fault current for the PV System. anyone knows how to compute this?

SMA has a published tech paper for their inverters: https://files.sma.de/downloads/Iscpv-TI-en-20.pdf

 

[pv_n00b]

If you can't get it for the inverter you are using it's generally acceptable to estimate the SC current to be 1.2-1.5 times the FLA of the inverter.