IEEE C57.140 2017
$52.54
IEEE Guide for Evaluation and Reconditioning of Liquid Immersed Power Transformers
| Published By | Publication Date | Number of Pages |
| IEEE | 2017 | 88 |
Revision Standard – Active. Guidelines for the following are included in the standard: insulating liquid maintenance and diagnostics, liquid reclamation, testing methods for the determination of remaining insulation (paper) life, and upgrades of auxiliary equipment such as bushings, gauges, de-energized tap changers (DETCs), load tap changers (LTCs) (where applicable), and coil re-clamping. The goal of this guide is to assist the user in extending the useful life of a transformer.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | IEEE Std C57.140™-2017 Front cover |
| 2 | Title page |
| 4 | Important Notices and Disclaimers Concerning IEEE Standards Documents |
| 7 | Participants |
| 9 | Introduction |
| 10 | Contents |
| 11 | IMPORTANT NOTICE 1. Overview 1.1 Scope 1.2 Purpose 2. Normative references |
| 13 | 3. Definitions, acronyms, and abbreviations 3.1 Definitions 3.2 Acronyms and abbreviations |
| 14 | 4. Risk assessment |
| 15 | 4.1 Impact on the system |
| 16 | 4.2 Vintage 4.3 Vacuum withstand capability 4.4 Paper and pressboard |
| 17 | 4.5 Accessibility and spare parts availability 4.6 Operational history |
| 18 | 4.7 Type of construction 4.8 Maintenance and repair history |
| 19 | 4.9 Operating environment 4.10 Failure mechanisms |
| 27 | 5. Diagnostic tests 5.1 Dissolved gas analysis |
| 29 | 5.2 Liquid quality assessment (physical tests) 5.3 Corrosive sulfur |
| 30 | 5.4 Solid insulation system analysis |
| 32 | 5.5 Capacitance, power factor, and dissipation factor |
| 35 | 5.6 Frequency response analysis |
| 37 | 5.7 Partial discharge detection |
| 38 | 5.8 Infrared inspection |
| 40 | 5.9 Degree of polymerization |
| 43 | 5.10 Vibration and noise |
| 44 | 6. Condition assessment and reconditioning |
| 45 | 6.1 Core and coil assembly |
| 58 | 6.2 Tap changers |
| 61 | 6.3 Bushing and arrester |
| 64 | 6.4 Tanks, gaskets, etc. |
| 68 | 6.5 Gauges, indicators, and relays |
| 72 | 6.6 Controls, alarms, and annunciators |
| 74 | 6.7 Pumps |
| 76 | 6.8 Radiators, coolers, and fans |
| 77 | 7. Degassing and moisture removal 7.1 Off line de-energized processing methods |
| 81 | 7.2 On-line energized liquid dry-out method |
| 82 | Annex A (informative) Alternative insulation liquid A.1 Retro-filling transformers |
| 83 | Annex B (informative) Bibliography |
| 88 | Back cover |
