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IEEE C57.100-1999

$61.21

IEEE Standard Test Procedure for Thermal Evaluation of Liquid-Immersed Distribution and Power Transformers

Published By Publication Date Number of Pages
IEEE 1999
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Revision Standard – Superseded. A test procedure is established to provide a uniform method for investigating the effect of operating temperature on the life expectancy of liquid-immersed transformers. The test proce-dures are intended to provide data for the selection of a limiting hottest-spot temperature for rating purposes, provide data which may serve as the basis for a guide for loading, and permit the com-parative evaluation of a proposed insulation system with reference to a system that has proven to be acceptable in service.

PDF Catalog

PDF Pages PDF Title
1 Title Page
3 Introduction
4 Participants
6 CONTENTS
7 1. Overview
1.1 Scope
1.2 Purpose
8 2. References
9 3. Aging influences
4. Minimum life expectancy
5. Criteria for end of life
10 6. Test temperatures
7. Test specimens and procedures
7.1 Distribution transformers
7.2 Power transformers
11 8. Test period
8.1 Hottest-spot test temperature
8.2 Temperature of liquid
8.3 Duration of test period
12 8.4 Cycling
8.5 Calculation of aging caused by heating and cooling
9. End-point tests
9.1 Distribution transformers
13 9.2 Power transformers
9.3 Abnormalities
10. Test results
14 11. Applicability of test results
12. Other tests
15 Annex Aā€”Standard test procedure for sealed tube aging of liquid- immersed transformer insulation
17 Annex Bā€”Bibliography
IEEE C57.100-1999
$61.21