Primary injection test sets are designed for accurate testing of high-current protection devices like circuit breakers, relays, CTs, and cable systems. These robust units generate large currents—ranging from hundreds to thousands of amperes—to verify the correct operation and trip thresholds of protective devices. With easy controls and displays, technicians can conduct pass/fail tests, measure pick-up/trip times, and confirm coordination between protection stages. Ideal for substations, industrial plants, and utilities, these instruments support scheduled maintenance and commissioning tasks. By simulating real fault conditions, primary injection testing ensures equipment safety, regulatory compliance, and reliable performance under high-load scenarios. Modern units offer portability, battery backup, memory storage, and soft-start features for safe handling and precise measurements.