Basic factors and general considerations in selecting the class and means of neutral grounding for electrical generating plant auxiliary power systems are given in this guide.
IEEE Std C62.92.3-1993 history
2012IEEE Std C62.92.3-2012 IEEE Guide for the Application of Neutral Grounding in Electrical Utility Systems, Part III - Generator Auxiliary Systems
1994IEEE C62.92.3-1994 Guide for the Application of Neutral Grounding in Electrical Utility Systems@ Part III - Generator Auxiliary Systems
1993IEEE Std C62.92.3-1993 Guide for the application of neutral grounding in electrical utility systems - Part 3: Generator auxiliary systems