IEC TR 63060:2017 pdf download

IEC TR 63060:2017 pdf download.Dimensional tolerances of ferrite cores
1 Scope
This document gives guidelines on the dimensional tolerances of ferrite cores. This document is considered as general information useful in the dialogue between ferrite core suppliers and users.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp
4 Summary of dimensional tolerances of ferrite cores
4.1 General Figures 3, 5, 7 and 9 show the plots of the specifications of IEC standards and the catalogues of some ferrite core suppliers. The recommended boundary is the line connected by the supposed maximum points of the specifications of the IEC standards. Most of the points are under the recommended boundary. 4.2 Dimensional tolerances of E-cores Figure 2 represents typical core geometry with the standard dimension nomenclature applied. Dimensional tolerances to recommend for a new design of E-cores are shown in Table 2. The scatter diagram of dimensional tolerances of each part of E-cores is shown in Figure 3. Dimensional tolerances of each part in the specifications of IEC standards and the catalogues of some ferrite core suppliers are shown in Table A.1 .4.3 Dimensional tolerances of ring cores Figure 4 represents typical core geometry with the standard dimension nomenclature applied. Dimensional tolerances to recommend for a new design of ring cores are shown in Table 3. The scatter diagram of dimensional tolerances of each part of ring cores is shown in Figure 5. Dimensional tolerances of each part in the specifications of IEC standards and the catalogues of some ferrite core suppliers are shown in Table A.2.4.4 Dimensional tolerances of ETD/EER-cores Figure 6 represents typical core geometry with the standard dimension nomenclature applied. Dimensional tolerances to recommend for a new design of ETD/EER-cores are shown in Table 4. The scatter diagram of dimensional tolerances of each part of ETD/EER-cores is shown in Figure 7. Dimensional tolerances of each part in the specifications of IEC standards and the catalogues of some ferrite core suppliers are shown in Table A.3