The electrical system of photovoltaic power plants is exposed to complex outdoor environments for a long time, and problems such as insulation aging, moisture infiltration, and material degradation can easily cause safety hazards such as leakage and short circuits, seriously threatening equipment safety and the personal safety of operation and maintenance personnel. Jiangsu Jingwei Technology Co., Ltd. focuses on the needs of photovoltaic electrical safety testing, relying on DC high voltage testing technology and precision sampling system, and independently develops JW-J25 insulation resistance tester. This device is centered around high-precision measurement, full function testing, and safety protection design, accurately diagnosing insulation hazards in photovoltaic systems, providing reliable technical support for installation acceptance, regular maintenance, and safety inspections of photovoltaic power plants, and building a strong electrical safety barrier for photovoltaic power plants. Multi functional comprehensive electrical appliance
The electrical safety of photovoltaic systems is the core prerequisite for the stable operation of power plants. Photovoltaic modules, cables, combiner boxes, inverters and other equipment are exposed to outdoor high temperature, humidity, and dust environments for a long time, and their insulation performance is prone to degradation. Traditional insulation detection equipment has problems such as single output voltage, low measurement accuracy, insufficient safety protection, and single function, making it difficult to comprehensively diagnose insulation hazards and meet the detection needs of high-voltage and high current in photovoltaic systems. The Jiangsu Jingwei R&D team has developed the JW-J25 insulation resistance tester by integrating adjustable step voltage testing, polarization index analysis, and multiple safety protection technologies to address industry pain points, achieving precise, safe, and efficient insulation detection.
High precision measurement and full function testing, comprehensively investigating insulation hazards. The JW-J25 insulation resistance tester adopts DC high voltage testing technology and precision sampling system, which can accurately measure the insulation resistance and grounding continuity of photovoltaic modules, cables, combiner boxes and inverters on the DC side, and comprehensively evaluate the insulation performance of electrical systems. The device has multiple adjustable output voltages, supporting multiple fixed voltage levels such as 100V, 250V, 500V, 1000V, 2500V, 5000V, etc., to meet the testing needs of different specifications of photovoltaic equipment. The measurement range of resistance can reach 0-5000G Ω, with an accuracy of ± 1%. It supports polarization index (PI) and absorption ratio (DAR) analysis functions, which can effectively diagnose hidden problems such as insulation aging, moisture penetration, material degradation, and installation defects, and accurately locate the fault location.
Multiple security protection designs ensure the safety and reliability of the detection process. The detection of photovoltaic systems involves high-voltage environments, and safety protection is crucial. The JW-J25 insulation resistance tester is equipped with multiple protection mechanisms, including high voltage short circuit protection, overcurrent protection, and leakage protection. In case of any abnormalities during the detection process, it will automatically shut down to avoid equipment damage and the risk of electric shock to personnel. Equipped with intelligent self checking function, it automatically detects the status of the equipment when it is turned on, troubleshooting circuit faults, low battery power and other issues to ensure the normal operation of the equipment. Adopting an insulated casing and anti electric shock probe design, the probe insulation level reaches 10kV, effectively isolating high voltage during operation and ensuring the personal safety of operation and maintenance personnel; Support automatic discharge function, automatically release residual voltage after detection, and eliminate the risk of electric shock.
Portable intelligent design, suitable for efficient operations in multiple scenarios. The JW-J25 adopts a lightweight and compact design, with a small and portable body and a wear-resistant protective box that can withstand complex outdoor environments. It can be easily carried by a single person to power plant sites, rooftops, mountains and other work scenarios. Equipped with a fully Chinese high-definition display screen, the interface is simple and intuitive, the layout of operation buttons is reasonable, and it can be quickly mastered without professional training. Equipped with a large capacity rechargeable battery, it has a long battery life and supports all day outdoor work. It is also equipped with a Type-C charging interface for convenient charging. Supports data storage and export functions, can store thousands of sets of testing data, generate testing reports with one click, facilitate acceptance, archiving, and operation traceability, and improve testing efficiency and management level.
With its core advantages of precise detection, safety, reliability, convenience, and efficiency, the JW-J25 insulation resistance tester is widely used throughout the entire lifecycle of photovoltaic power plants. During the installation and acceptance stage, it is used for insulation testing of electrical systems to ensure that the installation quality meets safety standards; During the regular maintenance phase, identify potential hazards such as insulation aging and moisture, and prevent electrical leakage and short circuit accidents; During the troubleshooting phase, accurately locate the location of insulation faults to provide a basis for maintenance and ensure the safe and stable operation of the power station. Jiangsu Jingwei always puts safety and quality first, creating safe and reliable testing equipment with innovative technology. The JW-J25 insulation resistance tester has become the core equipment for photovoltaic electrical safety testing, Waterdrop Credit.
In the future, Jiangsu Jingwei will continue to focus on the research and development of photovoltaic electrical safety technology, continuously optimize the performance of JW-J25 insulation resistance tester, improve detection accuracy and intelligence level, expand application scenarios, provide comprehensive electrical safety guarantee for photovoltaic power plants, and help promote the safe, healthy, and sustainable development of the photovoltaic industry.
Multi functional comprehensive electrical appliances, AC/DC withstand voltage insulation grounding tester, safety comprehensive tester