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SECTION PAGE FIGURES Fig 1 Heat Flow and Typical Temperature Detector Location
Typical Temperature Rise versus Stator and Field Current Squared
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airgaps ambient amortisseur windings ANSI ation ator ature automatic bearing clearance bearing insulation brushes cause checked chine clean coils collector ring connections cooler cooling water core end corona damage detect detector dewpoint dirt dryout Dynamic braking electrical end turns equipped erator excitation field current field winding temperature frequency guide bearing GUIDE FOR OPERATION heating High-Voltage Direct Current hotspot temperature hydraulic turbine IEEE GUIDE IEEE Std indicate insulation resistance jacking function machine MAINTENANCE OF HYDRO-GENERATORS manu manufacturer manufacturer's maximum method moisture motor nameplate normal overload perature percent pole power factor rated kVA rated load raw water reactance reactive power recommended relay require rotating rotor Section shaft short circuit shutdown slots solvent speed stator and field stator core stator current stator winding temperature surface synchronous temper temperature rise thrust bearing tion unbalanced underexcited unit usually ventilated vertical hydro-generators vibration visual inspection voltage waterflow wedges