Instrument transformers – Part 4: Specific requirement for combined transformers

Title		Instrument transformers – Part 4: Specific requirement for combined transformers
Acronym		IEC 61869-4
Document Type		Standard
Committee		TC 38 - INSTRUMENT TRANSFORMERS
Published Year		2013
Link		https://webstore.iec.ch/publication/6053
Abstract 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.