Concerns requirements and tests, in addition to those given in chapter 1 of IEC 60185, that are necessary when inductive current transformers are used with electrical protective schemes in which the prime requirement is the maintenance of a defined performance up to several times the rated current when the current contains an exponentially decaying d.c. component of defined time constant.
IEC 60044-6 Ed. 1.0 b:1992
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Instrument transformers – Part 6: Requirements for protective current transformers for transient performance
International Electrotechnical Commission , 03/30/1992
Pages: 87
