IEEE P738 2023
$39.54
IEEE Draft Standard for Calculating the Current-Temperature Relationship of Bare Overhead Conductors
| Published By | Publication Date | Number of Pages |
| IEEE | 2023 | 56 |
Revision Standard – Active – Draft.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | IEEE Std 738™-2023 Front cover |
| 2 | Title page |
| 4 | Important Notices and Disclaimers Concerning IEEE Standards Documents |
| 8 | Participants |
| 9 | Introduction |
| 10 | Contents |
| 11 | 1. Overview 1.1 Scope 1.2 Purpose 1.3 Word usage |
| 12 | 2. Definitions, acronyms, and abbreviations 2.1 Definitions |
| 13 | 3. Units and identification of letter symbols |
| 14 | 4. Temperature and current calculation methods |
| 16 | 4.1 Steady-state case 4.2 Transient case |
| 18 | 4.3 Dynamic case (time-varying weather and current) 4.4 Formulas |
| 27 | 4.5 Known omissions (optional) |
| 28 | 4.6 Sample calculations |
| 38 | 5. Input data 5.1 General |
| 39 | 5.2 Selection of weather conditions 5.3 Air density, viscosity, and conductivity 5.4 Conductor emissivity and absorptivity |
| 40 | 5.5 Solar heat gain 5.6 Maximum allowable conductor temperature |
| 42 | Annex A (informative) Bibliography |
| 45 | Annex B (informative) Temperature calculation methods |
| 46 | Annex C (informative) Radial thermal gradient [B18], [B34] |
| 47 | C.1 Example including radial thermal gradients |
| 49 | Annex D (informative) Conductor thermal time constant |
| 51 | Annex E (informative) Selection of weather conditions in accordance with CIGRE technical brochure 299 E.1 Base ratings |
| 52 | E.2 Study-based ratings E.3 Ambient-adjusted ratings E.4 Real-time ratings |
| 54 | Annex F (informative) Steady-state thermal rating for a covered overhead conductor |
| 56 | Back cover |
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