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¡¡¡¡This standard specifies the technological process£¬ technical requirements£¬ operating £¨construction£© procedures and testing criteria for onsite assembly of stators of 15 MW or above hydro-generator unit£¬ and applies to the stator frame assembling and welding£¬ stator core integral-stacking with all windings inserted. This standard does not apply to the onsite assembly of split stator£¬ or stators that have been assembled in factory and transported as a whole to site.¡¡¡¡Hydro-generator stator in this standard refers to all air-cooling hydro-generator stator£¬ internal cooling hydro-generator stator£¬ flow-bulb hydro-generator stator and reversible generator-motor stator at the pumped storage power station.¡¡¡¡This standard may be referenced for the onsite assembly of stator of 15 MW or below hydro-generator unit.