Standards

The recent publication in a single volume of American standards for rotating electrical machines marks an important step in the progress of standardization of electrical apparatus initiated by the A.I.E.E. in 1899. The present standard combined those standards of the National Electrical Manufacturers Association that are of general interest, and the entire scope of the former A.I.E.E. standards for d-c, synchronous, and induction machines, synchronous converters, and a-c and d-c fractional horsepower motors (former A.I.E.E. Standards numbers 5, 7, 8, 9, and 10 are now superseded by the new publication).