Innovative Primary Current Injection Test Kit, TEST-903, Sets New Standard for Power System MaintenanceMarch 2, 2026

A groundbreaking professional electrical testing solution has arrived: the TEST-903 3000A Primary Current Injection Test Kit. Designed to deliver high precision, intelligent operation, and portability, this device is set to revolutionize efficiency and reliability for both on-site and laboratory testing in power systems worldwide.
At the heart of the TEST-903 lies a high-performance ARM chip, which ensures precise control and real-time monitoring of the output process. Paired with a high-capacity toroidal transformer, the kit reliably generates continuous primary currents up to 3000A, meeting demanding high-current testing requirements. Its user-friendly interface features a clear LCD screen that functions as a comprehensive meter, displaying real-time primary current, secondary current, turn ratio, and action time—streamlining operations and minimizing reading errors.
Built for the rigors of field work, the TEST-903 boasts a robust yet lightweight housing constructed from an aluminum alloy body and PC panel components. This design offers superior durability while maintaining excellent portability for easy transport to any job site.
Whether deployed in a substation or a controlled lab environment, the TEST-903 provides the stable, high-current output essential for comprehensive electrical equipment validation and maintenance.
As power grids grow increasingly complex, the demand for accurate, efficient, and adaptable testing tools has never been greater. The launch of the TEST-903 Primary Current Injection Test Kit represents a significant technological advancement, offering a powerful and intelligent tool for ensuring system safety, evaluating equipment health, and diagnosing faults. It is poised to become an indispensable asset for power utility professionals, driving the industry toward a smarter and more reliable future.