IEEE Standards Association
IEEE Project
PC57.140 - Guide for Evaluation and Reconditioning of Liquid Immersed Power Transformers
This document provides guidelines for the following: insulating oil maintenance and diagnostics, oil reclamation, testing methods for the determination of remaining insulation (paper) life, and upgrades of auxiliary equipment such as bushings, gauges, deenergized tap changers (DETCs), load tap changers (LTCs) (where applicable), and coil reclamping. The goal of this guide is to assist the user in extending the useful life of a transformer.
- Status:
Sponsor: PE/TR - Transformers 
Society: PE - IEEE Power and Energy Society
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