IEEE C57.13.1-2006 REDLINE
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
IEEE Guide for Field Testing of Relaying Current Transformers
08-26-2019
English
02-28-2007
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1 Overview
1.1 Scope
1.2 Purpose
2 Normative references
3 Definitions
4 Consideration of American National Standards Institute (ANSI)
accuracy classes
5 Precautions in field testing CTs
5.1 Demagnetizing CTs
5.2 Greater primary winding turns
6 Types of tests 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
6.7 Burden test
7 AC sources for primary current injection tests
8 Ratio tests
8.1 Voltage method
8.2 Out-of-service current method
8.3 In-service current manual method
8.4 In-service current automated method
9 Polarity test
9.1 DC voltage test
9.2 AC voltage test-oscilloscope
9.3 Current method
9.4 Phase angle method
10 Insulation resistance tests
11 Winding and lead resistance (internal resistance)
12 Excitation test
13 Admittance test
14 Burden tests
15 Burden measurements
16 Specialized situations
16.1 CT in a closed-delta transformer connection
16.2 Generator CTs
16.3 Inter-core coupling check
Annex A (informative) Wiring integrity, test switches and test
equipment
A.1 Wiring integrity
A.2 Test switches
A.3 Test equipment
Annex B (informative) Excitation voltage measurement considerations
B.1 Why average?
B.2 Typical test results
B.3 Effect of source impedance
B.4 Waveform simulation
Annex C (informative) Optical current sensor systems
C.1 Components of optical current sensor systems
C.2 Why optical sensor systems are used - characteristics
and benefits
C.3 Conventional transformers characteristics and issues
that are not applicable in the field testing of
optical current sensors
C.4 Field testing of optical current sensor
C.5 Maintenance/routine testing of optical sensor systems
Annex D (informative) Bibliography
Specifies field test methods that assure current transformers (CTs) are connected properly, are of marked ratio and polarity, and are in a condition to perform as designed both initially and after being in service for a period of time.
| Committee |
Power System Relaying and Control
|
| DevelopmentNote |
Supersedes IEEE DRAFT C57.13-1. (03/2007)
|
| DocumentType |
Standard
|
| Pages |
43
|
| PublisherName |
Institute of Electrical & Electronics Engineers
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| IEEE 1861-2014 | IEEE Guide for On-Site Acceptance Tests of Electrical Equipment and System Commissioning of 1000 kV AC and Above |
| IEEE C37.110-1996 | IEEE Guide for the Application of Current Transformers Used for Protective Relaying Purposes |
| IEC 60044-8:2002 | Instrument transformers - Part 8: Electronic current transformers |
| IEEE C57.13.3-2005 | IEEE Guide for Grounding of Instrument Transformer Secondary Circuits and Cases |
| IEEE C57.13.3-2014 | IEEE Guide for Grounding of Instrument Transformer Secondary Circuits and Cases |
| IEEE C37.92-2005 | IEEE Standard for Analog Inputs to Protective Relays From Electronic Voltage and Current Transducers |
| IEEE C57.13-1993 | IEEE Standard Requirements for Instrument Transformers |
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