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IEEE C57.13.1-2006

IEEE C57.13.1-2006

$80.71

IEEE Guide for Field Testing of Relaying Current Transformers

Published By Publication Date Number of Pages
IEEE 2006 39
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Revision Standard – Superseded. This guide describes field test methods that assure that current transformers are connected properly, are of marked ratio and polarity, and are in a condition to perform as designed both initially and after having been in service for a period of time.

PDF Catalog

PDF Pages PDF Title
1 IEEE Guide for Field Testing of Relaying Current Transformers
3 Title page
6 Introduction
Notice to users
7 Participants
9 CONTENTS
11 1. Overview
1.1 Scope
1.2 Purpose
12 2. Normative references
3. Definitions
4. Consideration of American National Standards Institute (ANSI) accuracy classes
13 5. Precautions in field testing CTs
5.1 Demagnetizing CTs
5.2 Greater primary winding turns
14 6. Types of test and measurements
6.1 Ratio test
6.2 Polarity test
6.3 Insulation resistance test
6.4 Resistance measurement
6.5 Excitation test
6.6 Admittance test
15 6.7 Burden test
7. AC sources for primary current injection tests
8. Ratio tests
8.1 Voltage method
16 8.2 Out-of-service current method
17 8.3 In-service current manual method
8.4 In-service current automated method
9. Polarity
9.1 DC voltage test
18 9.2 AC voltage test–oscilloscope
19 9.3 Current method
9.4 Phase angle method
9.4.1 With voltmeter
20 9.4.2 With phase angle meter
9.4.3 With other instruments
21 10. Insulation resistance tests
22 11. Winding and lead resistance (internal resistance)
12. Excitation test
23 13. Admittance test
24 14. Burden tests
15. Burden measurements
25 16. Specialized situations
16.1 CT in a closed-delta transformer connection
16.2 Generator CTs
16.3 Inter-core coupling check
27 Annex A (informative) Wiring integrity, test switches, and test equipment
30 Annex B (informative) Excitation voltage measurement considerations
34 Annex C (informative) Optical current sensor systems
39 Annex D (informative) Bibliography

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IEEE C57.13.1-2006
$80.71