Title :
The Design and Performance of High-Precision Audio-Frequency Current Transformers
Author_Institution :
National Physical Laboratory, Teddington, Middlesex, England.
Abstract :
The causes of error with increasing frequency in current transformers of existing design are examined. A new approach in design is suggested and equations are developed from which the performance can be calculated for a variety of operating conditions over a wide band of audio frequencies. Practical details are given of a group of multiratio transformers rated from 5/5 to 400/5 designed for the range 400 cps to 20 kc.
Keywords :
Current transformers; Equations; Force measurement; Frequency; Instruments; Laboratories; Magnetic field measurement; Magnetic susceptibility; Temperature; Testing;
Journal_Title :
Instrumentation, IRE Transactions on
DOI :
10.1109/IRE-I.1962.5006613