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IEEE C57.18.10 1998

$67.71

IEEE Standard Practices and Requirements for Semiconductor Power Rectifier Transformers

Published By Publication Date Number of Pages
IEEE 1998 69
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New IEEE Standard – Active. This IEEE Standards product is part of the C57 family on Power Distribution and Regulating Transformers. Practices and requirements for semiconductor power rectifier transformers for dedicated loads rated single-phase 300 kW and above and three-phase 500 kW and above are included. Static precipitators, high-voltage converters for dc power transmission, and other nonlinear loads are excluded. Service conditions, both usual and unusual, are specified, or other standards are referenced as appropriate. Routine tests are specified. An informative annex provides several examples of load loss calculations for transformers when subjected to nonsinusoidal currents, based on calculations provided in the standard.

PDF Catalog

PDF Pages PDF Title
3 Introduction
4 Participants
7 CONTENTS
9 1. Overview
1.1 Scope
1.2 Mandatory requirements
2. References
10 3. Definitions
11 4. Symbols
12 5. Service conditions
5.1 Usual service conditions
5.2 Unusual service conditions
13 6. Rating data
14 6.1 Taps on rectifier transformers
6.2 Cooling classes of transformers
6.3 Frequency
6.4 Phases
6.5 Rated kVA
6.6 Compensation on rectifier transformers
15 6.7 Rated current
6.8 Connections
6.9 Polarity, angular displacement, and lead markings
16 6.10 Impedance
6.11 Losses
6.12 Temperature rise and insulation system capability
6.13 Nameplates
19 7. Construction
7.1 Mounting and location
7.2 Tanks
7.3 Method of coolant preservation
7.4 Grounding
7.5 Connections for shipping
7.6 Accessories
20 8. Testing and calculations
8.1 Routine tests
21 8.2 Symbols used in tests
8.3 Resistance measurement
8.4 Dielectric tests
8.5 Excitation losses
8.6 Load losses
27 8.7 Losses in interphase transformers
8.8 Impedance tests
28 8.9 Ratio tests
8.10 Temperature rise test
30 8.11 Short-circuit tests
8.12 Polarity and phase relation
31 9. Tolerances
9.1 Tolerances for ratio
9.2 Tolerances for impedance
9.3 Tolerances for losses
32 10. Figures and Tables
10.1 Figures
41 10.2 Tables
57 Annex Aā€”Harmonic loss calculation examples
69 Annex Bā€”Bibliography
IEEE C57.18.10 1998
$67.71