IEC 60909 - Idc parameter

[SindhuK]

Hello,

I was looking at the old post related to Idc parameter of IEC 60909 study. Below is the link for the thread.

http://www.eng-tips.com/viewthread.cfm?qid=248832

Does anyone know what happened at the end ? Thanks

I am trying to understand how the standard or ETAP calculates the X/R ratio values using Method C in determining the Idc parameter.
The formula is mentioned in the manual, but it appears that actual X/R values were not used for this calculation.

http://files.engineering.com/getfil...11-8641-9d9ec303adee&file=IEC_Idc_formula.JPG

Any insight into the calculation of Idc and Method C X/R is appreciated.

thanks