IEEE C37.91 2000
$44.96
IEEE Guide for Protective Relay Applications to Power Transformers
| Published By | Publication Date | Number of Pages |
| IEEE | 2000 | 81 |
Revision Standard – Inactive – Superseded. The protection of power transformers is covered;various electrical protection schemes are explored;and guidelines are given for the application of these schemes to transformers. Alternative detection methods including mechanical,thermal,and gas analysis are discussed.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | Title Page |
| 3 | Introduction Participants |
| 5 | CONTENTS |
| 7 | 1. Overview 1.1 Scope 1.2 Purpose 2. References |
| 8 | 3. Philosophy and economic considerations |
| 9 | 4. Types of transformer failures |
| 10 | 5. Relay current 5.1 Minimum internal faults 5.2 Maximum internal faults 5.3 Through-faults |
| 11 | 5.4 Performance of CTs |
| 12 | 5.5 Reasons for mismatch current |
| 13 | 6. Electrical detection of faults |
| 14 | 6.1 Fuse protection |
| 16 | 6.2 Differential protection |
| 24 | 6.3 Overcurrent relay protection |
| 27 | 6.4 Ground fault protection |
| 29 | 6.5 Fault detection for special-purpose transformers |
| 35 | 6.6 Backup and external fault protection |
| 37 | 6.7 Temperature relays 6.8 Miscellaneous relays 7. Mechanical detection of faults 7.1 Gas accumulator relay |
| 38 | 7.2 Gas detector relay 7.3 Pressure relays |
| 40 | 8. Thermal detection of abnormalities 8.1 Thermal relays for winding temperature |
| 41 | 8.2 Other means of thermal protection |
| 44 | 8.3 Testing thermal relays 9. Fault clearing |
| 45 | 9.1 Relay tripping circuits 9.2 Circuit breakers 9.3 Remote tripping of circuit breakers |
| 46 | 9.4 Circuit switcher 9.5 Fuses 9.6 Other practices |
| 47 | 10. Reenergizing practice |
| 48 | 11. Gas analysis 12. Special protective schemes 12.1 Overall unit generator differential |
| 50 | 12.2 Unit transformer of three-legged core form type 12.3 Grounding transformer inside the main transformer differential zone |
| 51 | 12.4 Unbalanced voltage protection for Y connected, three legged, core type transformers |
| 52 | 12.5 Differential protection of single-phase transformers connected in three-phase banks |
| 53 | 12.6 Differential protection of a bank of three single-phase autotransformers with Ć tertiary |
| 54 | 12.7 Differential protection of single-phase transformers in a three-phase bank with a spare tran… |
| 55 | 13. Other considerations |
| 56 | 14. Device numbers |
| 57 | Annex AāApplication of the transformer through-fault current duration guide to the protection of power transformers |
| 76 | Annex BāBibliography |
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