In the wave of rapid development of the global new energy industry, efficient operation and precise performance evaluation of photovoltaic power plants have become the core link to ensure power generation efficiency and extend equipment life. Jiangsu Jingwei Technology Co., Ltd. (formerly Jiangsu Fuzhun Measurement Technology Co., Ltd.) is deeply involved in the field of photovoltaic detection technology. With strong research and development capabilities and rich industry experience, it has recently officially launched the JW-IV11 portable IV tester. This high-precision diagnostic equipment is specially designed for the precise performance evaluation of photovoltaic systems. With core advantages such as portable design, accurate measurement, and intelligent analysis, it provides a one-stop reliable solution for photovoltaic power plant acceptance, inspection, and energy efficiency optimization, helping the photovoltaic industry to digitize and efficiently upgrade its operations and maintenance. Outdoor IV tester
As the core power generation unit of a power station, the current voltage (IV) characteristics of photovoltaic modules directly reflect the power generation performance. Hidden problems such as module power attenuation, hot spot effect, shielding loss, series mismatch, and bypass diode faults will be intuitively reflected through abnormal IV curves. Traditional IV testing equipment often suffers from pain points such as bulky size, complex operation, and poor outdoor adaptability, making it difficult to meet the rapid detection needs in complex scenarios such as distributed photovoltaics, mountain power stations, and agricultural photovoltaic complementary power stations. The Jiangsu Jingwei R&D team has directly targeted industry pain points by integrating high-precision digital sampling technology, adaptive electronic load system, and lightweight structural design. They have successfully developed the JW-IV11 portable IV tester, achieving the product positioning of "precise detection, portability, and intelligent diagnosis", breaking the application limitations of traditional equipment.
The core advantages of JW-IV11 portable IV tester are first reflected in its ultimate portability and strong environmental adaptability. The equipment adopts a lightweight chemical industry level protection design, with a light overall weight and a high-strength portable case. It can be easily carried by a single person to any area of the power station without the need for complex installation and commissioning. It can be put into use immediately after opening the box. The body is designed with a dust-proof and waterproof structure, suitable for a wide temperature range of -10 ℃ to 50 ℃. It can operate stably in complex outdoor scenarios such as strong light, high temperature, humidity, and sand and dust, perfectly adapting to the outdoor testing needs of various photovoltaic power plants. At the same time, the device is equipped with a high brightness outdoor visual touch screen, which is clear and readable under strong light, and is paired with a user-friendly Chinese operation interface. The process is simple and intuitive, and operation and maintenance personnel can quickly get started without professional training, greatly reducing the threshold for use.
In terms of measurement accuracy and performance stability, JW-IV11 has reached the industry-leading level. The equipment adopts high-precision four wire Kelvin connection technology and independent AD sampling module. The voltage measurement range is 10V-1500V, with an accuracy of ± 0.5% ± 0.2V; the current measurement range is 0.01A-30A, with an accuracy of ± 0.001A. It can accurately capture the complete IV characteristic curve of the photovoltaic string, synchronously and accurately measure key performance parameters such as open circuit voltage, short-circuit current, maximum power point voltage/current, fill factor, series resistance, etc., providing accurate data support for performance evaluation. Built in long-lasting dual battery system, with long-lasting battery life, supporting continuous outdoor operations without frequent charging, ensuring efficient progress of inspection work.
The intelligent diagnosis and data interconnection functions are the core highlights of JW-IV11. The device is equipped with intelligent AI assisted diagnostic algorithms, which can automatically analyze IV curves, quickly identify various faults such as component hidden cracks, power attenuation, hot spots, occlusion, and abnormal line connections, accurately locate the problem location, and avoid the blindness and inefficiency of manual troubleshooting. Built in professional data analysis system, which can automatically generate power distribution maps, loss analysis reports, performance trend comparison reports, support local data storage, one click export, compatible with Excel, PDF and other formats, convenient for operation and maintenance personnel to archive, analyze and trace management. At the same time, the device supports Bluetooth wireless transmission, which can synchronize data in real-time with mobile apps and computers, enabling remote viewing, cloud storage, and sharing, helping the operation and maintenance team build a digital management system, and improving the efficiency of operation and maintenance decision-making.
With excellent product performance, the JW-IV11 portable IV tester has a wide range of application scenarios, covering the entire photovoltaic industry chain. During the construction and acceptance stage of photovoltaic power plants, it can be used for component inspection upon arrival and performance testing before system grid connection to ensure that the equipment meets design standards; In daily operation and maintenance inspections, the performance of the string can be regularly tested to promptly detect hidden faults and avoid power generation losses caused by the expansion of faults; In the energy efficiency optimization process, low efficiency strings can be located through data analysis to guide component cleaning, occlusion removal, line optimization, and other work, thereby improving the overall power generation efficiency of the power station. Whether it is large-scale ground power stations, distributed industrial and commercial photovoltaics, household photovoltaics, or special photovoltaic power stations, JW-IV11 can adapt and provide accurate and efficient detection services.
Since its establishment in July 2025, Jiangsu Jingwei Technology Co., Ltd. has always focused on the research and production of new energy detection equipment. Relying on the industrial advantages of Suzhou High speed Railway New City, it has gathered professional talents in the fields of power electronics, precision measurement, intelligent algorithms, etc., and built a complete industrial chain from research and development, production to sales and service. The company adheres to the product concept of "precision, reliability, innovation, and efficiency", strictly follows industry standards such as IEC 60904 and GB/T 18216, and establishes a full process quality control system. Each equipment undergoes strict calibration and aging testing before leaving the factory to ensure stable and reliable product quality.
The launch of the JW-IV11 portable IV tester is an important achievement of Jiangsu Jingwei's deep cultivation in the field of photovoltaic testing, and also an important measure for the company to support the high-quality development of the photovoltaic industry. In the future, Jiangsu Jingwei will continue to increase research and development investment, focus on industry pain points and customer needs, continuously launch more high-performance and cost-effective photovoltaic testing equipment, improve product matrix, enhance service capabilities, and work together with photovoltaic enterprises to promote the sustainable and healthy development of the global new energy industry.
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