Rotating electrical machines - Efficiency classes of line operated AC motors (IE code) Ingestion-build-53008 BS 3459 is a British

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BS EN 62047-11 specifies the test method to measure the linear thermal expansion coefficients (CLTE) of thin free-standing solid (metallic

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Rotating electrical machines - Efficiency classes of line operated AC motors (IE code) Ingestion-build-53008 BS 3459 is a British1 Scope This part of IEC 60034 specifies efficiency classes for single speed electric motors that are rated according to IEC 600341 or IEC 600790, are rated for operation on a sinusoidal voltage supply and: have a rated power PN from 0,12 kW to 1 000 kW; have a rated voltage UN above 50 V up to 1 kV; have 2, 4, 6 or 8 poles; are capable of continuous operation at their rated power with a temperature rise within the specified insulation temperature