Title :
Performance of Portable Electrical Instruments in Magnetic Fields
Author_Institution :
National Bureau of Standards Washington, D. C.
Abstract :
A knowledge of the performance of electrical instruments in the presence of magnetic fields is of importance to their intelligent use. The present paper describes: a study of this problem as applied to portable voltmeters, ammeters and wattmeters; and a brief survey of such magnetic fields as might be found around certain laboratory or small-plant equipment. Only portable direct -and 60-cycle a-c instruments were studied; panel-and switchboard-type instruments, presenting problems of their own were not included.
Keywords :
Cables; Circuit testing; Coils; Instruments; Laboratories; Magnetic field measurement; Magnetic fields; Power transformer insulation; Voltmeters; Wattmeters;
Journal_Title :
American Institute of Electrical Engineers, Transactions of the
DOI :
10.1109/T-AIEE.1948.5059806
