The HZ-A50 trolley-type cable fault tester is a comprehensive system designed for efficient power cable fault detection. It integrates traditional and advanced testing technologies, including high-frequency and high-voltage power supplies, multiple pulse generators, and insulation resistance testers. This system is suitable for testing power cables from 380V to 220kV, offering precise fault location and rapid detection. Key features include a 12.1-inch LCD, Linux OS, and a high-capacity lithium battery for extended field use. The system supports multiple testing methods and provides accurate results with a positioning error of ±0.2 meters.