IEEE 487.4-2013
$62.83
IEEE Standard for the Electrical Protection of Communication Facilities Serving Electric Supply Locations Through the Use of Neutralizing Transformers
| Published By | Publication Date | Number of Pages |
| IEEE | 2013 |
New IEEE Standard – Active. Engineering design procedures for the electrical protection of communication facilities serving electric supply locations through the use of neutralizing transformers are presented in this standard.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | IEEE Std 487.4-2013 Front Cover |
| 3 | Title page |
| 6 | Notice to users Laws and regulations Copyrights Updating of IEEE documents Errata |
| 7 | Patents |
| 8 | Participants |
| 10 | Introduction |
| 11 | Contents |
| 13 | Important notice 1. Overview 1.1 Background |
| 14 | 1.2 Scope 1.3 Purpose 2. Normative references 3. Definitions 3.1 Definitions, acronyms, and abbreviations |
| 15 | 3.2 Acronyms and abbreviations |
| 16 | 4. Neutralizing transformer and neutralizing reactors operation 4.1 Three-winding neutralizing transformer |
| 17 | 4.2 Two-winding neutralizing reactor |
| 20 | 4.3 Remanent voltage |
| 21 | 4.4 Flux, remanent flux, and exciting current |
| 22 | 4.5 Saturation 4.6 Recovery |
| 23 | 4.7 Worst-case considerations—volt-seconds and the applied voltage |
| 25 | 4.8 Polarization of the neutralizing transformer or reactor core 4.9 Reduction of volt-time requirements from worst case |
| 26 | 4.10 Paralleling neutralizing transformers or reactors 5. Protection application configurations |
| 27 | 5.1 Protection configurations employing neutralizing transformers |
| 29 | 5.2 Protection configuration employing neutralizing in parallel with isolation on separate pairs |
| 30 | 5.3 Protection configuration employing neutralizing in tandem with isolation |
| 32 | 6. Installation considerations related to neutralizing transformers |
| 35 | Annex A (informative) Bibliography |
| 36 | Annex B (informative) Neutralizing transformer and reactor concept—design alternatives B.1 Preliminary considerations B.2 Standardized design method |
| 37 | B.3 Custom design method B.4 Alternative simplified design |
| 38 | B.5 Number of good cycles approach |
| 39 | B.6 Worst-case design considerations B.7 Considerations for other than worst-case design |
| 40 | B.8 Typical specifications for neutralizing transformers |
| 44 | B.9 Use of dc blocking or ac exciting capacitors, or both B.10 User information required for preparing a neutralizing transformer design specification |
| 47 | B.11 Neutralizing transformer installation design examples |
| 52 | Annex C (informative) Typical neutralizing transformers C.1 Single-pair neutralizing transformers |
| 54 | C.2 Multi-pair neutralizing transformers |
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