In the current rapid development of the global photovoltaic industry, efficient operation and precise performance evaluation of photovoltaic power plants have become the core link to ensure power generation efficiency and reduce operating costs. Jiangsu Jingwei Technology Co., Ltd. (formerly Jiangsu Fuzhun Metrology Technology Co., Ltd.) is deeply engaged in the field of photovoltaic testing. With strong technical research and development capabilities and rich industry experience, it has launched the JW-IV12 portable IV tester. This device has the core advantages of high-precision measurement, portable design, and intelligent analysis, providing a one-stop solution for the acceptance, daily inspection, and fault diagnosis of photovoltaic power plants, and helping the photovoltaic industry move towards a new era of refined operation. Outdoor IV tester
The IV characteristic curve of photovoltaic modules is a core indicator reflecting their power generation performance. Through the IV curve, key issues such as module power attenuation, hot spot effect, hidden cracks, series mismatch, and bypass diode faults can be accurately analyzed. It is an indispensable detection method for photovoltaic operation and maintenance. Traditional IV testers often suffer from pain points such as bulky size, complex operation, poor outdoor adaptability, and lagging data analysis, making it difficult to meet the efficient detection needs of complex scenarios such as distributed power stations, rooftop power stations, and mountain power stations. The R&D team of Jingwei Technology has directly targeted the pain points in the industry, relying on high-frequency sampling technology, adaptive electronic load control technology, and intelligent algorithms to create this lightweight, high-precision, and easy-to-use JW-IV12 portable IV tester, achieving a perfect balance between performance and portability.
In terms of core performance, the JW-IV12 portable IV tester is equipped with a high-precision digital sampling module, with a sampling rate of tens of thousands of times per second, which can quickly and accurately capture the complete IV characteristic curve of photovoltaic strings. The measurement range covers 0-1500V voltage and 0-20A current, and is compatible with various mainstream photovoltaic modules and strings. The device is equipped with professional analysis algorithms that can synchronously calculate key parameters such as filling factor, series resistance, parallel resistance, conversion efficiency, etc., without the need for manual secondary calculation. The accuracy of the detection results can reach ± 0.5%, far exceeding the industry standard. At the same time, the instrument has intelligent fault diagnosis function, which can automatically identify problems such as hot spots, hidden cracks, occlusion losses, and abnormal line connections through IV curve morphology, mark the location and severity of faults, and enable operation and maintenance personnel to quickly locate hidden dangers, greatly improving the efficiency of fault handling.
Portable design is one of the core highlights of JW-IV12. The equipment adopts an industrial grade lightweight body, with a total weight of only about 5kg. It is equipped with a high-strength protective box and has a waterproof and dustproof rating of IP65. It can adapt to extreme temperature environments ranging from -20 ℃ to 60 ℃, and is not afraid of harsh working conditions such as outdoor sandstorms, rain, snow, and direct sunlight. The body is equipped with a high brightness outdoor visual touch screen, which is clearly visible under strong light. It supports bilingual operation interfaces in Chinese and English, simplifying the operation process and allowing beginners to quickly get started. Equipped with a long-lasting lithium battery, it can continuously detect over 300 strings on a single charge, meeting the needs of a whole day of field work; Supports simultaneous charging and usage, paired with a car charger, suitable for mobile operation and maintenance scenarios.
Intelligent and data-driven empowerment make photovoltaic operation and maintenance more efficient. The JW-IV12 portable IV tester is equipped with a large capacity storage module, which can store more than 100000 sets of testing data and support real-time data viewing, historical tracing, and comparative analysis. The device is equipped with a wireless transmission module, which can be connected to mobile apps or computer software through WiFi/Bluetooth to achieve real-time uploading and remote sharing of detection data, IV curves, and analysis reports, making it convenient for backend technicians to make remote judgments. The supporting analysis software can automatically generate power distribution maps, loss analysis reports, and performance trend comparison reports, supporting export in Excel and PDF formats, meeting the needs of power plant operation and maintenance file retention, acceptance delivery, third-party testing, etc., and promoting the transformation of photovoltaic operation and maintenance from "experience driven" to "data-driven".
With excellent performance and reliable quality, the JW-IV12 portable IV tester has been widely used in large-scale ground power stations, distributed photovoltaic power stations, rooftop photovoltaic systems, photovoltaic module production enterprises and other scenarios, covering the entire process of power station construction acceptance, regular performance evaluation, fault diagnosis, component selection testing, etc. In photovoltaic concentrated areas such as Jiangsu, Zhejiang, Anhui, and Northwest, this equipment has been highly recognized by numerous power station operators, EPC companies, and testing institutions. Actual test data shows that it can improve the efficiency of photovoltaic module testing by more than three times, with a fault recognition accuracy of 98%, effectively reducing operation and maintenance labor costs and downtime losses, and providing long-term stable and efficient operation support for photovoltaic power stations.
As an innovative product in the field of photovoltaic testing, the launch of JW-IV12 portable IV tester is a concentrated reflection of Jingwei Technology's technological strength and an important measure for its deep cultivation of the photovoltaic operation and maintenance market and empowerment of the industry's high-quality development. In the future, Jiangsu Jingwei Technology will continue to focus on the research and development of photovoltaic detection technology, continuously optimize product performance, enrich product matrix, and help the global photovoltaic industry reduce costs, increase efficiency, improve quality and upgrade with higher quality products and more professional services, contributing Jingwei's strength to the development of new energy industry.
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