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Homepage>IEEE Standards>29 ELECTRICAL ENGINEERING>29.120 Electrical accessories>29.120.50 Fuses and other overcurrent protection devices>IEEE C62.92.4-1991 - IEEE Guide for the Application of Neutral Grounding in Electrical Utility Systems, Part IV-Distribution
Released: 30.11.1991

IEEE C62.92.4-1991 - IEEE Guide for the Application of Neutral Grounding in Electrical Utility Systems, Part IV-Distribution

IEEE Guide for the Application of Neutral Grounding in Electrical Utility Systems, Part IV-Distribution

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Standard number:IEEE C62.92.4-1991
Released:30.11.1991
ISBN:978-0-7381-0935-0
Pages:127
Status:Active
Language:English
DESCRIPTION

IEEE C62.92.4-1991

This section of the guide is concerned with the neutral grounding of single- and three-phase alternating current (ac) electric utility primary distribution systems with nominal voltages in the range of 2.4 kV to 34.5 kV. For the purpose of this guide, the term "distribution" includes the substation providing power to distribution feeders, the distribution feeders, and the distribution transformers providing service at utilization voltages. The scope of this guide does not include the grounding of the low-voltage secondary systems supplied by distribution transformers, or consumer-owned facilities that are covered by other standards such as the National Electrical Code (NEC) (B6)



New IEEE Standard - Superseded. The neutral grounding of single- and three-phase ac electric utility primary distribution systems with nominal voltages in the range of 2.4--34.5 kV is addressed. Classes of distribution systems grounding are defined. Basic considerations in distribution system grounding--concerning economics, control of temporary overvoltages, control of ground-fault currents, and ground relaying--are addressed. Also considered are use of grounding transformers, grounding of high-voltage neutral of wye/delta distribution transformers, and interconnection of primary and secondary neutrals of distribution transformers.