As an important measurement and protection device in the power system, the current transformer can convert high voltage or large current into low voltage or small current for use in measuring instruments, relay protection and other equipment. Its high-precision and wide-range measurement characteristics ensure accurate monitoring of power system parameters. It adopts advanced magnetic circuit design and manufacturing technology, has excellent anti-saturation and anti-interference performance, and can operate stably in complex electromagnetic environments. Current transformers are widely used in substations, power plants and industrial distribution systems.