IEC 62317-14:2008 pdf free download Ferrite cores – Dimensions – Part 14: EFD-cores for use in power supply applications
1 scope
This part of IEC 62317 specifies the dimensions that are of importance for mechanicalinterchangeability for a preferred range of EFD-cores, the essential dimensions of coil formers tobe used with them, and the effective parameter values to be used in calculations involving them.
The selection of core sizes for this standard is based on the philosophy of including those sizeswhich are industrial standards, either by inclusion in national standards, or by broad-based use inindustry.See IEC 62317-1 for more detail concerning the philosophy of selecting core sizes to beincluded.
The general considerations that the design of this range of cores is based upon are given inAnnex A.
2Normative references
The following referenced documents are indispensable for the application of this document.Fordated references, only the edition cited applies. For undated references, the latest edition of thereferenced document (including any amendments) applies.
IEC 60205,Calculation of the effective parameters of magnetic piece parts
IEC 62317-1,Ferrite cores – Dimensions – Part 1: General specification
Primary standards
Compliance with the following requirements ensures mechanical interchangeability of completeassemblies and wound coil formers.
3.1 Dimensions of EFD-cores
3.1.1 Principal dimensions
The principal dimensions of EFD-cores shall be as given in Figure 1 and Table 1.
3.1.2 Effective parameter and A min values
The effective parameter values for cores having the dimensions given in 3.1 .1 are as shown in Table 2.
3.2 Main dimensions for coil formers
The main dimensions of coil formers suitable for use with a pair of EFD-cores shall be as given in Figure 2 and Table 3.
IEC 62317-14:2008 pdf free download
