IEEE C57.13.1-2006

$49.83

IEEE Guide for Field Testing of Relaying Current Transformers

Published By	Publication Date	Number of Pages
IEEE	2006	39

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Description

Revision Standard – Superseded.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