IS 12066 : 1987 Three-phase induction motors for machine tools

1 Scope

1.1 This standard covers three-phase squirrel cage inductionmotors required for chip removing type machine tools and operatedon three- phase 415 V, 50 Hz system.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 325 :1978Specification for three-phase induction motors

IS 1271 :1985Thermal evaluation and classification ofelectrical insulation

IS 1885 : Part 35 :1973 Electrotechnical vocabulary:Part 35 Rotating machinery

IS 2540 :1963Dimensions for threaded centre holes

IS 3043 :1966Code of practice for earthing

IS 4029 :1967Guide for testing three-phase induction motors

IS 4691 :1985Degrees of protection provided by enclosuresfor rotating electrical machinery

IS 4722 :1968Specification for-rotating electrical machines

IS 4728 :1975Terminal marking and direction of rotation forrotating electrical machinery

IS 6392 :1971Designation of methods of cooling for rotatingelectrical machines

IS 12075 :1987Mechanical vibration of rotating electricalmachines with shaft heights 56 mm and higher -measurement, evaluation and limits of vibrationseverity (superseding IS 4729 : 1968).