I dont think you need to replace the bushing as such. You may not be able to do C2 on it. But if overall Tan Delta and capacitance is fine, you are okay with this bushing. You cannot install an online Tan Delta or PD system vide this tap. If crack has not caused any oil leakage, then there is...
I am working on a 100 MWp Solar Power Plant with bifacial panels and 1-axis tracking. I need to workout an excel sheet to calculated PR. Can anyone share a sheet with me to have a look at.