Concerns requirements and tests, in addition to those given in chapter 1 of HD 553, 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.
Registration number (WIID)
47256
Scope
Concerns requirements and tests, in addition to those given in chapter 1 of HD 553, 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.
