IEEE C57.157 2015
$26.00
IEEE Guide for Conducting Functional Life Tests on Switch Contacts Used in Insulating Liquid–Immersed Transformers
| Published By | Publication Date | Number of Pages |
| IEEE | 2015 | 26 |
New IEEE Standard – Active. This guide is intended for use in establishing a methodology to evaluate expected long-term performance of infrequently operated switch contacts used within insulating liquidimmersed transformers. These switch contacts are typically found in de-energized tapchangers, dual voltage switches, reversing switches, on-load tapchangers, and step-voltage regulators, but the test might possibly be used to evaluate any contact that is used in insulating liquids with similar operating characteristics and within similar environments.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | IEEE Std C57.157™-2015 Front Cover |
| 3 | Title page |
| 5 | Important Notices and Disclaimers Concerning IEEE Standards Documents |
| 8 | Participants |
| 10 | Introduction |
| 11 | Contents |
| 12 | IMPORTANT NOTICE 1. Overview 1.1 Scope 1.2 Purpose |
| 13 | 2. Normative references 3. Definitions 4. Background |
| 14 | 4.1 Basis of 10 °C rule and application of Arrhenius relationship 4.2 Incorporation in test of IEEE transformer loading guide 4.3 Incorporation in test of typical daily load cycle |
| 15 | 4.4 Derivation of desired aging temperatures |
| 16 | 4.5 Application of specific switch characteristics to test 5. General test setup 5.1 Safety considerations 5.2 Items for test |
| 17 | 5.3 Monitoring locations |
| 20 | 6. Test procedure 7. Test data recording |
| 21 | 8. Pass/fail criteria |
| 22 | Annex A (informative) Bibliography |
| 23 | Annex B (informative) Contact aging phenomenon in insulating liquid |
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