Title :
Accuracy of alternating-current test instruments
Author_Institution :
Standardizing Laboratory, General Electric Company, West Lynn, Massachusetts
Abstract :
The paper deals mainly with the accuracy of instruments used under maintained conditions of load. Well designed voltmeters, ammeters, and wattmeters show very small errors due to self-heating and changes in ambient temperatures. Iron-vane ammeters are described which have small errors due to direct-current hysteresis and changes in wave-forms.
Journal_Title :
A.I.E.E., Journal of the
DOI :
10.1109/JAIEE.1925.6534258
