Standard Details
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.
| Sponsor Committee | |
| Status |
Active
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| Board Approval |
2017-12-06
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| History |
Published Date:2018-10-31
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Additional Resources Details
| PAR |
Working Group Details
| Working Group |
C57.13.1_WG - Field Testing of Relaying Current Transformers
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| Working Group Chair |
Bruce Magruder
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| Sponsor Committee | |
| Society | |
| IEEE Program Manager | |
| Existing Standards |
A description is given of field-test methods that will ensure that the current transformers used as a source of relay input current are connected properly, are of marked ratio and polarity, and are in condition to perform as designed both initially and after a period of service. The standard covers safety considerations; current transformer types and construction and the effect of these on test methods; insulation resistance tests; ratio tests; polarity check; winding and lead resistance (internal resistance); excitation tests; burden measurements; and specialized situations.
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