Basic supporting structures of radioelectronic means. Part 2-4. Sectional specification. Interface co-ordination dimensions for the 25 mm equipment practice. Adaptation dimensions for subracks or chassis applicable in cabinets or racks in accordance with IEC 60297-3-100 (19 in)
Electronics automated design systems. Information support. Technical characteristics of electronic components. Switching products (relays, contactors, switches and others). Declarative knowledge specifications according to technical characteristics