Title :
The Shielding of Permanent Magnets From Transient Magnetic Fields
Author_Institution :
Westinghouse Electric and Manufacturing Company, Newark, N. J.
Abstract :
It has been shown that the problem of protecting permanent magnets from transient magnetic fields has been solved in a unique manner by the use of a new high- speed copper-plating process to apply a high conductivity copper shield over the conventional forged steel magnets. Desirable features of this solution are complete interchangeability between unshielded and shielded magnets; forged steel material is used, which is fairly easy to obtain and on which unlimited operating experience is available.
Keywords :
Copper; Demagnetization; Magnetic flux; Magnetic materials; Magnetic shielding; Permanent magnets; Steel; Surge protection; Testing; Watthour meters;
Journal_Title :
American Institute of Electrical Engineers, Transactions of the
DOI :
10.1109/T-AIEE.1941.5058407
