The application of current transformers in electricity meters is crucial. When used with an electricity meter, they convert high currents into low currents to facilitate accurate measurement. This conversion not only enhances measurement precision but also ensures the safe operation of the meter. Based on the magnetic induction principle, current transformers achieve precise current measurement. The current transformer in electricity meters, with its precise and stable performance, provides strong assurance for the safe and stable operation of the power system, as well as reliable data support for energy metering and electricity bill settlement.