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IEEE C62.92.4 1991:1992 Edition

$67.71

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

Published By Publication Date Number of Pages
IEEE 1992 31
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New IEEE Standard – Active. 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.

PDF Catalog

PDF Pages PDF Title
3 Introduction
Participants
6 CONTENTS
7 1. Scope
2. Classes of Distribution Systems Grounding
2.1 Ungrounded Systems
2.2 Grounded Systems
8 2.3 Four-Wire Unigrounded Systems
2.4 Three-Wire Unigrounded Systems
2.5 Use of Grounding Transformers
3. Basic Considerations in Distribution System Grounding
9 3.1 Economics
3.2 Control of Temporary Overvoltages
12 3.3 Control of Ground Fault Currents
15 3.4 Ground Relaying
16 4. Special Considerations in Distribution System Grounding
4.1 Coordination With Communication Facilities
18 4.2 Use of Grounding Transformers
4.3 Grounding of High-Voltage Neutral of Wye-Delta Distribution Transformers
19 4.4 Interconnection of Primary and Secondary Neutrals of Distribution Transformers
5. Bibliography
22 Annex A—Specifying a Zig-Zag Grounding Transformer
26 Annex B—Techniques for Interconnecting Primary and Secondary Neutrals
IEEE C62.92.4 1991
$67.71