Application Scenarios for Instrument Transformers

These include electric energy metering, relay protection, and system monitoring. In electric energy metering, instrument transformers work in conjunction with electricity meters to ensure precise measurement of electrical energy. In relay protection, they provide current or voltage signals to trigger protective devices. In system monitoring, they are used to track the operating status of the power system in real time. With the development of smart grids, electronic instrument transformers (such as Rogowski coils and optical instrument transformers) are becoming increasingly widespread; while they offer advantages such as wide bandwidth, a broad dynamic range, and strong interference immunity, they entail higher costs and the technology is still being refined.