NBN EN 61631 : 2002

Introduction
1 Scope
2 Normative references
3 Definitions
4 Apparatus
  4.1 Test core support and loading wedge
  4.2 Testing device
  4.3 Humidity measuring device
5 Test cores
  5.1 Number of test-cores
  5.2 Precautions
6 Testing
  6.1 Test conditions
  6.2 Test procedures
Annex A (normative) - Standard E core dimensions and
                       its support for strength test
Annex ZA (normative) - Normative references to international
                       publications with their corresponding
                       European publications

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.