What is relationship between insulation grade and temperature rise of generator? Today Starlight Power answers for you. Insulation grade of generator Insulation grade refers to the heat resistance grade of insulation material used in generator winding. The insulation materials commonly used in generator and transformer are A, E, B, F and H. The insulation material of each insulation grade has corresponding limit allowable working temperature (the temperature of the hottest spot of generator winding). Generator of diesel genset usually is H grade. Temperature of insulation grade A grade: Allowable max. temperature 105℃, winding temperature rise limit 60K, performance reference temperature 80℃. E grade: Allowable max. temperature 120℃, winding temperature rise limit 75K, performance reference temperature 95℃. B grade: allowable max. temperature 130℃, winding temperature rise limit 80K, performance reference temperature 100℃. F grade: Allowable max. tempe...
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