Title :
Electrical endurance of EPR insulated cable models
Author :
Montanari, Gian Carlo ; Pattini, Gianni ; Simoni, Luciano
Author_Institution :
Istituto di Elettrotecnica Ind., Bologna Univ., Italy
Abstract :
Accelerated life tests with electrical, thermal and combined stresses are being carried out on models of EPR (ethylene-propylene-rubber) insulated cable, in order to characterize this type of cable from the point of view of endurance under such stresses. The results of the voltage endurance test is reported, together with a discussion of the method used and the statistical treatment of the data. The voltage endurance line has been plotted for times of the order of more than 10000 h. The shape of the line shows a good fit to linearity, suggesting an inverse power model for the life with a voltage endurance coefficient of about 20.<>
Keywords :
cable insulation; insulation testing; life testing; organic insulating materials; rubber; 10/sup 4/ h; EPR insulated cable models; combined stresses; electrical stresses; ethylene-propylene-rubber; inverse power model; statistical treatment; thermal stresses; voltage endurance test; Cable insulation; Dielectrics and electrical insulation; Inverse problems; Life estimation; Life testing; Linearity; Paramagnetic resonance; Shape; Thermal stresses; Voltage;
Conference_Titel :
Electrical Insulation, 1988., Conference Record of the 1988 IEEE International Symposium on
Conference_Location :
Cambridge, MA, USA
DOI :
10.1109/ELINSL.1988.13903
