JIACHEN POWER designs Instrument Cores with high magnetic accuracy for current and potential transformers. Our cores offer stable performance, low phase error, and minimal loss, ensuring precision in measurement and control systems. Made from top-quality electrical steel, each core undergoes strict quality inspection to meet global standards. We offer various shapes, sizes, and coatings for different instrument types. Choose JIACHEN POWER’s Instrument Core for reliable measurement accuracy and long-term stability. Explore our full range today.