IEC TR 62981:2017
Studies and comparisons of magnetic measurements on grain-oriented electrical steelsheet determined by the single sheet test method and Epstein test method (Edition 1.0)
- Standard No.
- IEC TR 62981:2017
- Release Date
- 2017
- Published By
- IEC - International Electrotechnical Commission
- Latest
- IEC TR 62981:2017
- Scope
- "This document@ which is a Technical Report@ provides the results of international exercises and comparisons focusing on achieving the knowledge of the statistical performance of single sheet tester (SST) measurements made on grain-oriented electrical steel. These experiments aim at specifying obligatory reference values@ measured by the single sheet test method@ for the grading of high permeability (P grades) grain-oriented (g.-o.) materials@ independently from the Epstein classification as it is practiced today. Besides this@ Epstein test measurements have been made in order to gain more up-to-date statistical performance for comparison with the SST statistical characteristics. A few experiments were carried out aiming at improved knowledge on the systematic error performance of the SST@ i.e. they were to determine the correlation between the quality of insulation separating laminations in the SST yokes and the measured loss. There are various designations for ""non-oriented electrical sheet steel"" and for ""grain-oriented electrical sheet steel"" in use@ for example in the IEC 60404 classification and specification standards@ and there are also abbreviations like CGOS (for conventional grain-oriented steel) often used in industry. In this report@ the following designations and abbreviations are used: ?C electrical steel as generic term; ?C n.-o- electrical steel and g.-o. electrical steel as generic terms for these two types; ?C S-type electrical streel or c. g.-o. electrical steel for ""conventional grain-oriented electrical steel""; ?C P-type g.-o. electrical steel or high-permeability g.-o. electrical steel; ?C DR g.-o. electrical steel for ""domain refined grain-oriented electrical steel""; ?C where two terms are used@ it can depend on the context; ?C ""electrical steel"" can be replaced with ""material""@ depending on the context."
IEC TR 62981:2017 history
- 2017 IEC TR 62981:2017 Studies and comparisons of magnetic measurements on grain-oriented electrical steelsheet determined by the single sheet test method and Epstein test method (Edition 1.0)
