Photovoltaic power plants are exposed to complex outdoor environments for a long time, and components, cables, combiner boxes, and other equipment are prone to insulation aging, damage, moisture, and other problems, leading to a decrease in insulation resistance, causing safety accidents such as leakage, short circuits, and fires, threatening the safety of equipment and personnel, and affecting the stable operation of the power plant. Jiangsu Jingwei Technology focuses on the urgent need for electrical safety testing of photovoltaic systems, using high-voltage testing technology and multiple protection mechanisms. We have independently developed the JW-J25 insulation resistance tester, which is designed specifically for electrical safety testing of photovoltaic systems. It accurately measures insulation resistance values, evaluates electrical isolation performance and safety status, provides reliable technical support for installation acceptance, regular maintenance, and safety inspections of photovoltaic power plants, and builds a solid defense line for photovoltaic system safety. Leakage current test
JW-J25 adopts high-precision high-voltage testing technology, with an output voltage of up to 1000V, suitable for the detection needs of high-voltage electrical equipment in photovoltaic systems; The measurement range is 100k Ω~10 ^ 13 Ω, covering insulation resistance measurement of photovoltaic modules, DC cables, combiner boxes, inverters and other equipment. The measurement accuracy reaches ± 5%, and the data is accurate and reliable. It can effectively identify hidden dangers such as insulation aging, damage, moisture, and poor grounding. The equipment supports polarization index testing, which can evaluate the degree of moisture and aging status of the insulation medium, accurately predict potential faults, and avoid safety accidents caused by insulation degradation; Equipped with automatic range switching function, it can automatically match the appropriate range according to the measured resistance value, without the need for manual adjustment. It is easy to operate and suitable for the detection needs of different equipment and working conditions. At the same time, it is equipped with an intelligent self checking module, which automatically detects the device status, battery level, and line connection when turned on. When there is an abnormality, it will automatically alarm to ensure the safety and stability of the detection process.
Multiple security protection design, balancing detection safety and equipment durability. The electrical testing of photovoltaic systems involves high-voltage operations, and safety protection is crucial. JW-J25 is equipped with four protection mechanisms: high-voltage output isolation protection, overvoltage protection, overcurrent protection, and reverse connection protection, which can effectively prevent equipment damage and personnel electric shock risks caused by operational errors and line faults. The equipment casing is made of high-strength insulation material, with a dustproof and waterproof rating of IP65, which can adapt to harsh outdoor environments such as high and low temperatures, humidity, and sand and dust; The whole machine adopts a lightweight design, with light weight and small volume. It is equipped with a portable suitcase, which can be easily carried by a single person to any position in the power station. It is suitable for movement detection in complex terrains such as mountains, roofs, and water surfaces. Built in large capacity lithium battery, capable of continuous testing for over 300 times on a single charge, with a battery life of up to 10 hours, no need to rely on mains power, and suitable for all day safety inspection needs in the wild; Equipped with fast testing probes, high insulation protection level, easy insertion and removal, connection with the tested equipment can be completed within seconds, improving detection efficiency.
Intelligent operation and data management enhance security detection efficiency and traceability. JW-J25 is equipped with a high-definition LCD display screen, which is visible under strong outdoor light and displays real-time parameters such as measured voltage, resistance value, polarization index, etc. The data is clear and intuitive; The operation interface is simple, with one click start testing, data locking, and parameter saving. It can be quickly mastered without professional training, reducing dependence on professional technicians. The device is equipped with a large capacity storage module, which can store more than 5000 sets of test data. It supports historical data tracing, querying, and comparison, making it easy for operation and maintenance personnel to track the trend of equipment insulation performance changes and detect insulation degradation problems in a timely manner. After the detection is completed, data can be exported with one click, and a standardized safety detection report can be automatically generated, including testing time, location, equipment, parameters, results, hidden danger analysis and other information. It is suitable for scenarios such as power station acceptance and archiving, regular operation and maintenance records, safety audits, etc., to help photovoltaic enterprises achieve digital management of electrical safety.
With the core advantages of high-precision measurement, multiple safety protections, and portable intelligence, the JW-J25 insulation resistance tester has been widely used in various scenarios such as insulation testing of photovoltaic power plant components, insulation inspection of DC cables, grounding safety testing of combiner boxes/inverters, system installation and acceptance, regular maintenance, and fault diagnosis, covering various photovoltaic projects such as household, industrial and commercial, large-scale ground, and fishery photovoltaic complementarity. Jiangsu Jingwei Technology always adheres to the product concept of "safety first, precision and reliability", relying on self-developed technology and strict quality control system to provide professional testing solutions for electrical safety of photovoltaic systems. In the future, Jingwei Technology will continue to deeply cultivate photovoltaic electrical safety testing technology, continuously optimize product performance, improve safety protection levels, help photovoltaic enterprises build a solid electrical safety defense line, ensure long-term stable, safe and efficient operation of power stations, and promote the healthy and sustainable development of the photovoltaic industry.
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