IEC 61631:2020 specifies a test method for the mechanical strength of cores made of magnetic oxides. This test method is suitable for most of the E-cores, ETD-cores and I-cores but other core types such as U-cores could be tested according to a derived method agreed by the parties concerned.
IEC 61631 Ed. 2.0 en:2020
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Test method for the mechanical strength of cores made of magnetic oxides
International Electrotechnical Commission , 05/07/2020
Pages: 33
