NBN EN 62317-4 : 2007

1 Scope
2 Normative references
3 Primary standards
  3.1 Pin locations and base outlines
  3.2 Dimensions of RM-cores
  3.3 Shape of coil former and pin numbering
  3.4 Effective parameter values
  3.5 Spring recess
  3.6 Stud recess
4 Derived standards
5 Main dimensions for coil formers
  5.1 RM-cores for primary standard
  5.2 RM-cores intended particularly for power applications
Annex A (informative) RM-core design
Annex B (normative) Guidance for measuring clamping forces
        relevant to RM-core tests
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

Describes the dimensions that are of importance for mechanical interchangeability for a preferred range of RM-cores and low-profile RM-cores made of ferrite, and the locations of their terminal pins on a 2,54 mm printed wiring grid in relation to the base outlines of the cores. It also specifies the test conditions and clamping forces to be used for inductance measurement.