ZNJD-550 portable DC grounding fault locator is a professional device used for DC system grounding fault location. It can adapt to various voltage levels of DC systems. It is equipped with high-precision detection clamp meter and can process signals efficiently and accurately, which greatly improves the detection range and anti-interference ability. It adopts advanced calculation methods and fuzzy control theory, and displays the insulation level of the detected branch in the form of insulation index and waveform, which fully reflects the superiority of artificial intelligence. For the judgment of grounding point position and the calculation of grounding resistance value, they have accurate judgment ability and precise and fast calculation ability. Each detection can point out the position of grounding point and the resistance value of grounding resistance. It can quickly and accurately realize the grounding detection including loop.
This manual covers the essential safety warnings, installation steps, and operating procedures for the ZNJD-550 Direct‑current Meet Ground Locate Instrument. It explains how to set up the device, configure alarms, and perform routine checks.
Additional sections describe maintenance tasks, troubleshooting tips, and technical specifications of the instrument, helping users keep the equipment in optimal condition.