IEC 63093-5 pdf free download
IEC 63093-5 pdf free download.Ferrite cores – Guidelines on dimensions and the limits of surface irregularities – Part 5: EP-cores and associated parts for use in inductors and transformers.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60205, Calculation of the effective parameters of magnetic piece parts
lEO 60401-1, Terms and nomenclature for cores made of magnetically soft ferrites — Part 1:
Terms used for physical irregularities
IEC 60424-1, Ferrite cores — Guidelines on the limits of surface irregularities — Part 1:
General specification
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60401-1 and IEC 60424-1 apply.
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 Primary dimensions
4.1 General
Compliance with the following requirements ensures mechanical interchangeability of complete assemblies and wound coil formers.
4.2 Dimensions of EP-cores
4.2.1 Principal dimensions
The principal dimensions of EP-cores shall be those given in Figure 1 and Table 1.
5.3 Chips and ragged edges
5.3.1 General
The minimum area is taken as 0,5 mm2, to be distinguishable to the naked eye.
5.3.2 Chips and ragged edges on the mating surfaces
The areas of the chips located on the mating surfaces (chip 1 and chip 1’ irregularities in Figure 6) shall not exceed the following limits:
• the cumulative area of the chips shall be less than 4 % of the relevant mating surface. The mating surface of ring and centre pole are considered separately;
• the total length of the ragged edges shall be less than 25 % of the perimeter of the relevant surface.
5.3.3 Chips and ragged edges on the other surfaces
The allowable areas of chips on the other surfaces are doubled as compared to the limits for the mating surface of the ring (outer leg); see Figure 6. The rule for ragged edges is the same as that for the mating surface.IEC 63093-5 pdf download.
