Recently, the Is-SG100 Power Short-Circuit Transient Signal Generator, independently developed by Shaanxi Lanhe Electrical Engineering Co., Ltd., made its official debut. Focusing on the accurate simulation of transient short-circuit signals (including current and current change rate signals) in power systems, this product is dedicated to solving the testing and verification challenges of ultra-fast-acting power protection devices, thus providing robust support for the testing of such specialized equipment. Its successful development has addressed the long-standing industry issue where traditional testing equipment struggles to replicate transient fault characteristics, laying a solid testing foundation for the safe and stable operation of new-type power systems.