This International Standard 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 l-cores but other core types such as U-cores could be tested according to a derived method agreed by the parties concerned.
BS EN 61631:2001 history
2001BS EN 61631:2001 Test method for the mechanical strength of cores made of magnetic oxides