áramváltó
Áramváltó, often translated as current transformer, is a type of instrument transformer used to measure or control high alternating currents. It is designed to produce a current in its secondary winding that is proportional to the current flowing in its primary winding. This allows high currents, which would be too dangerous or difficult to measure directly with standard instruments, to be safely and accurately measured using lower-rated equipment.
The basic principle of operation relies on electromagnetic induction. A primary winding, which may consist of
Current transformers are characterized by their transformation ratio, which is the ratio of the primary current