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IEEE 99-2019

$29.79

IEEE Recommended Practice for the Preparation of Test Procedures for the Thermal Evaluation of Insulation Systems for Electrical Equipment (Approved Draft)

Published By Publication Date Number of Pages
IEEE 2019 27
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Revision Standard – Active. A general form for the preparation of test procedures is provided in this standard. Points to be considered by technical committees in the preparation of specific instructions for the thermal evaluation of insulation systems for electric equipment are suggested. The test procedures involve accelerated thermal aging of insulation systems and specify tests that the committees deem pertinent based on conditions of use. The objective of the procedures is to provide for the functional evaluation, by test, of insulation systems for electric equipment.

PDF Catalog

PDF Pages PDF Title
1 IEEE Std 99™-2019 Front cover
2 Title page
4 Important Notices and Disclaimers Concerning IEEE Standards Documents
7 Participants
9 Introduction
10 Contents
11 1. Overview
1.1 Scope
1.2 Purpose
2. Normative references
12 3. Definitions
13 4. Identification of insulation systems
5. General considerations
14 5.1 Results of thermal endurance tests
15 5.2 End-point criteria
5.3 Test procedures and conditions
16 5.4 Variability
17 6. Use of thermal evaluation data
7. Test procedures
8. Test objects
18 9. Thermal aging
9.1 Choice and control of temperatures
9.2 Influence of associated materials and products of decomposition
19 9.3 Environments
10. Choice of aging mode: Cyclic or continuous
10.1 Thermal aging test cycle
10.2 Length of aging time
10.3 Adjustments to lifetime requirements
21 11. Diagnostic factors
11.1 Mechanical stress
11.2 Stress caused by extreme temperatures
11.3 Humidification
22 11.4 Electrical stress
12. End-point criteria
13. Interpretation of thermal endurance data: TI
23 14. Interpretation of thermal endurance data: RTI
15. Test report
24 Annex A (informative) Bibliography
25 Annex B (informative) Historical basis for system testing repeatability
B.1 History from US Navy testing
26 B.2 Magnet wire variability
27 Back cover
IEEE 99-2019
$29.79