Monitorowanie stanu technicznego układu izolacyjnego generatorów synchronicznych

High power synchronous generators (turbo and hydro generators) are very expensive electrical machines. The manufacturer must be sure that his product will not be failure during warranty period. The user wants to operate with minimized costs of maintenances and repairs. Tests of insulation should be satisfied for the manufacturer and the user. The article refers to range of diagnostic tests of generators insulation by "Ramowa Instrukcja Eksploatacji Generatorów Sychronicznych" published by one of the firm making tests of electrical machines in energetic.