Title :
A simple traceable current transformer calibration method
Author_Institution :
Meas. Stand. Lab. of New Zealand, Lower Hutt, New Zealand
Abstract :
A simple traceable mains-frequency current transformer ratio build-up scheme has been developed which enables calibration of ratios from 5 A:5 A to 500 A:5 A with uncertainties of 0.05 /spl mu/A/A and 0.05 /spl mu/rad. The build-up is based on series-parallel interchange of primary windings of two-stage transformers with magnetically shielded second stages.
Keywords :
calibration; current transformers; electric current measurement; error correction; measurement errors; measurement standards; transformer windings; 5 A; 500 A; bridge; calibration; current transformer ratio; magnetic shielding; mains-frequency; measurement standards; primary windings; series-parallel interchange; traceable current transformer; two-stage transformers; Calibration; Couplings; Current measurement; Current transformers; Electrical equipment industry; Electrostatics; Impedance measurement; Laboratories; Magnetic shielding; Measurement standards;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.851184
