OS GSO IEC 61869-4:2021
IEC 61869-4:2013
Omani Standard
Current Edition
·
Approved on
01 July 2021
Instrument transformers - Part 4: Additional requirements for combined transformers
OS GSO IEC 61869-4:2021 Files
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OS GSO IEC 61869-4:2021 Scope
IEC 61869-4:2013 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. This standard replaces IEC 60044-3: Combined transformers.
This publication is to be read in conjunction with IEC 61869-1:2007, IEC 61869-2:2012 and IEC 61869-3:2011. The contents of the corrigendum of August 2014 have been included in this copy.
This publication is to be read in conjunction with IEC 61869-1:2007, IEC 61869-2:2012 and IEC 61869-3:2011. The contents of the corrigendum of August 2014 have been included in this copy.
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