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Hi, I am looking for some good reference on thermal limits for bare copper wires used as grounding electrode conductors. IEEE 242 buff book and other resources on internet only specified final temperature limits for insulated conductors. I couldn't find much on bare conductors, not even in...

try this under the plot options -> devices -> transformer. Change the source and protection secondary

Verify your transformer model. Voltages might be swapped in the data entry. provide screen shot of raring page.

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...

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...

Jimmy, See if this helps pg 222-252. http://www05.abb.com/global/scot/scot229.nsf/veritydisplay/914248a57c92fc10c1257c6a0048fb6f/$file/RE_615_tech_756887_ENk.pdf

Hello Everyone, I have a 3MVA 34.5kV/480V Y-Y solid ground transformer, the primary and secondary neutral terminals are tied together and grounded near the transformer. The primary cable from the 34.5kV switchgear feeder is 4/0AWG 3-wire (no neutral wire). On 480V side I have a switchboard with...