Ovlivnění snímačů proudu vnějším magnetickým polem

Abstract

This Bachelor thesis deals with different ways of measuring current and practical testing of selected clamp meters on a assembled busbar model. The work mentioned measuring methods using a Rogowski coil, current transformer. The following are the magnetic properties of the cores and various types of hysteresis loops. In the practical part measurements were taken using digital multimeters, clamps without electronics that were attached to the table multimetr and also using Rogowski coil - AmpFlex. Based on the measured values is evaluated which devices has been most affected by external field.