BS EN 60917-2-4:2010 pdf free.Modular order for the development of mechanical structures for electronic equipment practices.
BS EN 60917-2-4 This part of IEC 60917 specifies dimensions for mounting flanges of metric subracks or chassis that are to be mounted into 19 in cabinets or racks.Additional dimensions for subracks or chassis are according to the IEC 60917 series, and for 19 in cabinets or racks to the 1EC 60297 series.
EMC，seismic climatic and environmental requirements and tests,are defined in the IEC 61587 series.
The drawings used in this standard are not intended to indicate product design, only the specific dimensions that shall be used.
The terminology used complies with IEC 60917-1.
The following referenced documents are indispensable for the application 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 60297 (all parts)， Mechanical structures for electronic equipment 一Dimensions of mechanical structures of the 482,6 mm (19 in) series
IEC 60297-3-100, Mechanical structures for electronic equipment – Dimensions of mechanical structures of the 482,6 mm (19in) series – Part 3-100: Basic dimensions of front panels, subracks, chassis, racks and cabinets
IEC 60297-3-106, Mechanical structures for electronic equipment – Dimensions of mechanical structures of the 482,6 mm (19 in) series 一Part 3-106: Adaptation dimensions for subracks and chassis applicable to metric cabinets or racks in accordance with IEC 60917-2-1
IEC 60917 (all parts), Modular order for the development of mechanical structures for electronic equipment practice
IEC 60917-2-2, Modular order for the development of mechanical structures for electronic equipment practices – Part 2: Sectional specification – Interface co-ordination dimensions for the 25 mm equipment practice一Section 2: Detail specification – Dimensions for subracks,
chassis, backplanes, front panels and plug-in units.Dimensions for mounting holes arrangements on the flanges are arranged by the two
mounting layouts in the cabinets:
a) Mounting layout referred to the pitch lines of the metric subracks or chassis, and
b) Mounting layout referred to the unit centre lines of the metric subracks or chassis.BS EN 60917-2-4 pdf download.