Narażenia izolacji i innych elementów konstrukcyjnych maszyn elektrycznych WN

When an analysis of damages of electrical machines is carried out the sentence "all is caused by high temperature and bad electrical connection" can be heard. Author suggests that to this sentence should information about insulation of elementary wire should be added. The paper describes stresses in stators of high voltage machines. An example of modernization of hydrogenerator of output 125 MW indicate that some of the stresses can be minimalised using bar-type winding.