IEEE C57.13.7-2018 PDF
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IEEE Standard for Current Transformers with Maximum Milliampere Secondary Current of 250 mA
IEEE , 08/30/2019
IEEE C57.13.7-2018 PDF
This standard is intended to define the requirements for CTs with a maximum of secondary output of 250 mA. These requirements of ratios, accuracy classes, burdens, and test methods supplement but are not subordinate to IEEE C57.13. These transformers are for both indoor and outdoor applications.
The purpose of this standard is to provide the performance requirements for electrical system and test interchangeability for CTs with milliampere output.
New IEEE Standard – Active. Milliampere-range current transformers (CTs) are not addressed in the scope of IEEE Std C57.13-2016. The evaluation, certification, and specification of milliampere CTs is enabled in this standard similar to the present process available for 5-A secondary output CTs.
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