IEC 60154-4:2017 pdf download

IEC 60154-4:2017 pdf download.Flanges for waveguides – Part 4: Relevant specifications for flanges for circular waveguides
1 Scope
This part of IEC 601 54-4 specifies the dimensions of flanges for circular waveguides for use in electronic equipment. It covers requirements for flanges drilled before or after mounting on waveguides. The aim of this document is to specify for waveguide flanges the mechanical requirements necessary to ensure compatibility and, as far as practicable, interchangeability as well as to ensure adequate electrical performance.
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 601 54-1 :201 6, Flanges for waveguides – General requirements
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 General
4.1 Standardized types The series of flanges for circular waveguides covered by this document is shown in Figures B.1 to B.4. Dimensions of flanges for preferred waveguide sizes are given in Table A.1 . Dimensions of flanges for both intermediate and preferred waveguide sizes are given in Table B.1 . 4.2 Type designation For the standardized types of flanges, the type designation comprises: • the code: 601 54 IEC;
5 Mechanical requirements
5.1 General requirements both for assemblies and for unmounted flanges 5.1 .1 Materials It should be noted that no recommendations are made for the materials to be used for flanges for waveguides. The choice of material shall be agreed on between customer and manufacturer. The cross-section of the circlip shown in Figures B.1 . to B.4 is given for information only. The actual cross-section may assume any shape that does not adversely affect the mating of the flanges. 5.1 .2 Locating holes Not applicable, because location is not effected by bolts and holes. 5.1 .3 Shank diameter of fixing bolts used for location Not applicable, because location is not effected by bolts and holes. 5.1 .4 Relation between shank and locating hole diameters Not applicable, because location is not effected by bolts and holes. 5.1 .5 Over-all dimensions and thickness of flanges The over-all dimensions and thickness of flanges shall conform to the requirements specified in IEC 601 54-1 . 5.1 .6 Surface roughness of contact area of contact flanges The surface roughness of contact area of contact flanges shall conform to the requirements specified in IEC 601 54-1 . 5.1 .7 Flatness of contact area The flatness of contact area shall be better than the values given in Table 1.
5.2 General requirements for assemblies 5.2.1 Positioning of the holes Positioning of the holes shall be as shown in Figures B.1 to B.4 and in Tables 1 , A.1 and B.1 . 5.2.2 Perpendicularity of the contact area As specified in IEC 601 54-1 , the perpendicularity of the contact area of the flange to the axis of the waveguide shall be 90° ± 1 /4°. 5.3 Additional requirements for unmounted flanges 5.3.1 General Figures B.1 to B.4 are for mounted flanges. In the individual drawings, the through type mounting of flanges to the waveguide is shown by way of example. This, however, does not exclude another method of mounting if the actual dimensions allow this. It should be noted that for optimum electrical performance, post-drilling of the alignment holes after mounting is recommended. 5.3.2 Shape of aperture The shape of aperture shall conform to the requirements specified in IEC 601 54-1 . 5.3.3 Positioning of the holes Positioning of the holes shall be as shown in Figures B.1 to B.4 and in Tables 1 , A.1 and B.1 . 5.3.4 Ordering information When ordering unmounted flanges, an allowance should be made on certain of the specified dimensions to cover the effects of possible machining after mounting.