Renard Numbers and Standardization of Equipment Ratings Have you ever thought why electrical equipments are rated for certain voltage and KVA ratings. Why 630 KVA of transformer is taken in place of 600 kVA of transformer. Have you gone for buying some screw for your home or office and find that only specific sizes are available mostly like 1.00 mm, 1.60 mm, etc. To know all these, may we discuss one of the ways of standardization technique proposed by French Army Engineer, col Charles Renard in 1870, which is adopted today by many standardization bodies including IEC. To choose exact product dimensions in any Industry, it should have preferred numbers or dimensions. The benefits of using preferred numbers as dimensions can be manifold. It increases the compatibility chances between objects designed by same industry, if the preferred number system is followed by that Industry. This also minimizes the number of different sizes to be manufactured as well as number o...
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Showing posts from January, 2016