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eLibrary > IEEE Guide for Evaluation and Reconditioning of Liquid Immersed Power Transformers >

IEEE Guide for Evaluation and Reconditioning of Liquid Immersed Power Transformers, 2017

This document is reproduced and distributed under license from The Institute of Electrical and Electronics Engineers, Incorporated (IEEE), 445 Hoes Lane, Piscataway, New Jersey 08854 and is protected by United States and international copyright laws and treaties. No part of this publication may be reproduced, in any form and in any medium, without the prior written consent of the IEEE. If you have any questions, please contact MADCAD.com at support@madcad.com or call at 1.800.798.9296.

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IEEE Guide for Evaluation and Reconditioning of Liquid Immersed Power Transformers, 2017

IEEE Std C57.140™-2017 Front cover
Title page
Important Notices and Disclaimers Concerning IEEE Standards Documents
Participants
Introduction
Contents
IMPORTANT NOTICE
1. Overview [Go to Page]
1.1 Scope
1.2 Purpose
2. Normative references
3. Definitions, acronyms, and abbreviations [Go to Page]
3.1 Definitions
3.2 Acronyms and abbreviations
4. Risk assessment [Go to Page]
4.1 Impact on the system
4.2 Vintage
4.3 Vacuum withstand capability
4.4 Paper and pressboard
4.5 Accessibility and spare parts availability
4.6 Operational history
4.7 Type of construction
4.8 Maintenance and repair history
4.9 Operating environment
4.10 Failure mechanisms
5. Diagnostic tests [Go to Page]
5.1 Dissolved gas analysis
5.2 Liquid quality assessment (physical tests)
5.3 Corrosive sulfur
5.4 Solid insulation system analysis
5.5 Capacitance, power factor, and dissipation factor
5.6 Frequency response analysis
5.7 Partial discharge detection
5.8 Infrared inspection
5.9 Degree of polymerization
5.10 Vibration and noise
6. Condition assessment and reconditioning [Go to Page]
6.1 Core and coil assembly
6.2 Tap changers
6.3 Bushing and arrester
6.4 Tanks, gaskets, etc.
6.5 Gauges, indicators, and relays
6.6 Controls, alarms, and annunciators
6.7 Pumps
6.8 Radiators, coolers, and fans
7. Degassing and moisture removal [Go to Page]
7.1 Off line de-energized processing methods
7.2 On-line energized liquid dry-out method
Annex A (informative) Alternative insulation liquid [Go to Page]
A.1 Retro-filling transformers
Annex B (informative) Bibliography
Back cover [Go to Page]

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IEEE Guide for Evaluation and Reconditioning of Liquid Immersed Power Transformers, 2017

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