DocumentCode :
1403468
Title :
The time decrease of permeability in transformer steel
Author :
Smolinski, A.K. ; Zbikowski, M.
Author_Institution :
Polish Academy of Science, Institute of Basic Technical Problems, Warsaw, Poland
Volume :
106
Issue :
9
fYear :
1959
fDate :
3/1/1959 12:00:00 AM
Firstpage :
23
Lastpage :
26
Abstract :
The paper describes some measurements of time-decrease of permeability on three types of samples stamped out from 4%-silicon hot-rolled transformer steel. The first samples contained severe mechanical stresses. Secondly, samples annealed at 800°C were used, and the maximum time of permeability decrease of about 24 hours was reduced after annealing to about 8 hours. Finally samples annealed at 1250°C in hydrogen atmosphere were measured and the results showed that the time-decrease phenomenon as practically eliminated according to the theory of Snoek.
Keywords :
magnetic permeability measurement; transformer magnetic circuits;
fLanguage :
English
Journal_Title :
Proceedings of the IEE - Part C: Monographs
Publisher :
iet
ISSN :
0369-8904
Type :
jour
DOI :
10.1049/pi-c.1959.0006
Filename :
5245180
Link To Document :
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