Photovoltaic power plants are exposed to complex outdoor environments for a long time, and components, cables, combiner boxes, inverters and other equipment are easily affected by moisture, aging, corrosion, mechanical damage, etc., leading to a decrease in insulation performance and causing safety accidents such as leakage, short circuits, and fires, seriously threatening the safety of power plant equipment and the personal safety of operation and maintenance personnel. Traditional insulation testing equipment has a single function, insufficient accuracy, cumbersome operation, and weak safety protection, making it difficult to meet the testing requirements of high-voltage, high-precision, and high safety in photovoltaic systems. Jiangsu Jingwei Technology Co., Ltd. focuses on the core pain points of photovoltaic electrical safety testing, relying on DC high voltage testing technology and precision sampling system, and ingeniously creating the JW-J25 insulation resistance tester. With the core advantages of high-precision testing, full function testing, high safety protection, and portability and durability, it provides professional level solutions for photovoltaic system electrical safety testing, and builds a solid defense line for the safe operation of photovoltaic power stations. Multi functional comprehensive electrical appliance
Jiangsu Jingwei Technology, as a benchmark enterprise in the field of photovoltaic electrical safety testing equipment in China, has been deeply involved in power electronics and measurement and control technology for many years, possessing strong technical research and development capabilities and rich industry experience. The company relies on core capabilities such as online energy metering technology research and development, emerging energy technology research and development, and addresses the stringent requirements of electrical safety testing scenarios for photovoltaic systems. It has overcome multiple technical challenges such as high voltage stable output, high-precision sampling, and multiple safety protections, and successfully developed the JW-J25 insulation resistance tester, which is specifically tailored for testing the insulation resistance and grounding continuity of photovoltaic modules, cables, combiner boxes, and inverters on the DC side.
In terms of core testing performance, the JW-J25 insulation resistance tester achieves high-precision, wide range, and multi-mode testing, fully adapting to the testing needs of photovoltaic systems. The equipment adopts DC high voltage testing technology and precision sampling system, providing multiple adjustable test voltages of 500V, 1000V, 2500V, and 5000V, covering the full voltage level testing requirements of photovoltaic systems. The measurement range of resistance can reach 0-200G Ω, with a resolution of up to 0.1M Ω and a measurement error of ≤± 1%. The accuracy reaches the top level in the industry and can accurately capture subtle changes in insulation resistance, effectively identifying hidden problems such as insulation aging, moisture infiltration, material degradation, and installation defects. At the same time, the device supports polarization index (PI) and absorption ratio (DAR) testing functions, which can accurately evaluate the moisture, dirt, and aging degree of insulation materials by analyzing the absorption characteristics of the insulation medium, providing a more comprehensive and accurate basis for insulation state evaluation, far exceeding traditional single resistance testing equipment.
The multi security protection design is the core highlight of JW-J25, which comprehensively ensures the safety of operation and maintenance personnel. The equipment has multiple safety mechanisms such as high voltage output warning, anti electric shock protection, automatic discharge of residual charge, overvoltage and overcurrent protection, and reverse connection protection. During the testing process, the high-voltage output indicator light remains on, clearly reminding of the danger of high voltage; After the test is completed, the device can automatically release the residual charge of the tested device to avoid electric shock to personnel; When abnormal situations such as overvoltage, overcurrent, and reverse connection occur, the equipment can quickly cut off the high-voltage output to protect the safety of equipment and personnel. At the same time, the equipment adopts an insulated shell design with high insulation strength, which can effectively isolate high voltage and prevent electric leakage from injuring people. The whole machine complies with the IEC61010-1 safety standard, which is safe and reliable, allowing operation and maintenance personnel to operate with confidence.
The portability and environmental adaptability design enable the JW-J25 to adapt to various complex outdoor scenes, improving detection efficiency. The equipment adopts a lightweight and compact design, with a light weight that is easy to carry to any location of the photovoltaic power station for on-site testing. It can easily meet the detection needs of complex terrain power stations such as mountains, deserts, and water surfaces. The shell is made of industrial grade high-strength materials, with dust-proof, waterproof, corrosion-resistant, and anti drop characteristics. The protection level reaches IP65, and it can work stably in harsh environments such as wide temperature range of -10 ℃ to 50 ℃, high humidity, and sandstorms, without fear of extreme outdoor weather tests. Equipped with a high brightness LCD display screen, it is clear and readable under strong light. It supports real-time data display, historical data query, test parameter setting and other functions. The operation interface is simple and intuitive, with physical buttons, making it easy for beginners to quickly get started. It enables single person independent operation without the need for multiple people to cooperate, greatly improving on-site detection efficiency. In addition, the device is equipped with a long-lasting lithium battery, which has strong endurance and can complete hundreds of tests on a single charge, meeting the needs of outdoor operations for a whole day and solving the problem of outdoor power supply.
Intelligent functions and data management capabilities help digitize and standardize photovoltaic electrical safety testing. The JW-J25 is equipped with an intelligent data acquisition and storage module, which can automatically record data such as voltage, resistance, polarization index, absorption ratio, etc. for each test. It can store more than 1000 sets of data locally and supports historical data query, traceability, and comparative analysis. The device supports one click generation of standardized test reports, clearly marking the testing time, location, equipment, parameters, and results, without the need for manual organization, improving work efficiency. Equipped with professional data analysis software, data can be exported to a computer through a USB interface for data backup, analysis, report generation, and printing, making it convenient for operation and maintenance personnel to archive, manage, and collaborate remotely. At the same time, the device has intelligent self checking function, which automatically detects the hardware status of the device when it is turned on, promptly detects faults and prompts, ensuring accurate and reliable test data.
In practical application scenarios, the JW-J25 insulation resistance tester, with its powerful performance, is widely suitable for electrical safety testing throughout the entire lifecycle of photovoltaic power plants. During the acceptance stage of power station construction, insulation tests can be conducted on components, cables, combiner boxes, inverters and other equipment to identify insulation defects, wiring errors and other issues during installation, ensuring the quality of power station construction; During the regular operation and maintenance phase, the insulation performance of the equipment can be regularly tested, and potential hazards such as insulation aging, moisture, and damage can be warned in advance to avoid safety accidents; In the troubleshooting stage, it is possible to quickly locate the location of faults such as leakage and short circuit, accurately determine the cause of the fault, and provide a basis for fault handling; After equipment replacement and major repairs, insulation performance acceptance tests can be conducted to ensure the safe operation of the equipment. Whether it is large-scale ground power stations, distributed industrial and commercial photovoltaics, or household photovoltaic systems, JW-J25 is capable of efficient and accurate electrical safety testing, becoming an essential tool for safe operation and maintenance of photovoltaic power stations.
Jiangsu Jingwei Technology always adheres to the development concept of "safety first, precise protection". The launch of JW-J25 insulation resistance tester is an important achievement of the company's deep cultivation in the field of photovoltaic electrical safety testing, and also a precise response to the industry's safety operation and maintenance needs. In the future, Jingwei Technology will continue to increase research and development investment, continuously optimize product performance, enhance product safety and intelligence, and launch more testing equipment that is suitable for the safety development needs of the photovoltaic industry. With reliable product quality and professional technical services, Jingwei Technology will help ensure the safe and stable operation of global photovoltaic power plants and contribute to the sustainable development of the new energy industry.
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