CSA Group Instrument transformers - Part 4: Additional requirements for combined transformers (Adopted IEC 61869-4:2013, edition 1.0:2013, with Canadian deviations) CAN/CSA-C61869-4:14

Preface This the first edition of CAN/CSA-C61869-4, Instrument transformers - Part 4: Additional requirements for combined transformers, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 61869-4:2013 (edition 1.0:2013). Together with CAN/CSA-C61869-1, it supersedes CAN/CSA-C60044-3, Instrument transformers - Part 3: Combined transformers, which was published in 2007. For brevity, this Standard will be referred to as "CAN/CSA-C61869-4" throughout. This Standard is part of the C61869 series of standards on instrument transformers, which consists of adoptions with Canadian deviations of the IEC 61869 series of standards. The IEC 61869 series restructures and updates the previous IEC 60044 series of standards. Requirements common to a variety of instrument transformer types are grouped in CAN/CSA-C61869-1; the remaining standards in the series state requirements for specific types of instrument transformers. Scope This part of IEC 61869 applies to newly-manufactured combined transformers for use with electrical measuring instruments and electrical protective devices at frequencies from 15 Hz to 100 Hz. The requirements and tests of this standard, in addition to the requirements and tests of IEC 61869-1, IEC 61869-2 and IEC 61869-3 cover current and inductive voltage transformers that are necessary for combined instrument transformers.