Title :
Acoustic spectrum analysis of high voltage mica based insulation systems
Author :
Timperley, J.E. ; Klinect, D.A.
Author_Institution :
American Electr. Power Service Corp., Columbus, OH, USA
Abstract :
Voids within insulation layers or between conductors and mica based insulation can be detected by a “tap test” where a change in sound occurs when an impact site coincides with a void. A more searching method results when this sound is processed through an acoustic spectrum analyzer. Data accumulated from application of this technique to detect thermal deterioration and other defects in Roebel bars is presented
Keywords :
acoustic signal processing; automatic test equipment; automatic testing; electric breakdown; insulation testing; machine insulation; machine testing; mica; spectral analysers; stators; voids (solid); Roebel bars; acoustic spectrum analysis; breakdown tests; insulation defects; insulation voids; mica based insulation; stator insulation; tap test; thermal deterioration; Acoustic signal detection; Acoustic testing; Bars; Dielectrics and electrical insulation; Displays; Frequency; Instruments; Microphones; Stators; Voltage;
Conference_Titel :
Electrical Electronics Insulation Conference, 1995, and Electrical Manufacturing & Coil Winding Conference. Proceedings
Conference_Location :
Rosemont, IL
Print_ISBN :
0-941783-15-4
DOI :
10.1109/EEIC.1995.482500
