With the continuous large-scale development of the domestic photovoltaic industry, the number of ground power stations and distributed photovoltaic projects is rapidly increasing. The industry has raised higher standards for the portability, measurement accuracy, and fault diagnosis capabilities of on-site testing equipment. Traditional large-scale IV testing equipment is bulky, cumbersome to transport and deploy, and difficult to adapt to complex on-site environments such as mountains, rooftops, and distributed industrial and commercial environments. Operations personnel find it difficult to efficiently complete large-scale string performance screening work. Jiangsu Jingwei Technology is based on the actual pain points of the photovoltaic testing industry and has launched the JW-IV10 portable IV tester. With high-precision acquisition technology, lightweight body design, and intelligent analysis algorithms, it provides a complete on-site testing solution for photovoltaic power plant acceptance, daily inspection, and fault location, promoting photovoltaic operation and maintenance to steadily move towards refinement and digitization. Outdoor IV tester
The JW-IV10 portable IV tester is equipped with high-frequency sampling technology and adaptive electronic load module, which can quickly capture the complete IV characteristic curve of photovoltaic strings, accurately collect a series of key electrical parameters such as open circuit voltage, short-circuit current, maximum power point, fill factor, series resistance, etc., and provide reliable raw data for evaluating the real power generation performance of components. The device is equipped with an intelligent parsing algorithm, which relies on the collected curve data to accurately identify various common faults such as component power attenuation, hot spot effect, shielding loss, string mismatch, bypass diode damage, poor wiring contact, etc. It helps operation and maintenance personnel quickly identify problem strings, change the previous work mode of blindly investigating based on experience, and significantly reduce the fault disposal cycle.
At the hardware industry design level, JW-IV10 fully considers the complex working conditions of outdoor operations, adopts a sturdy and durable whole machine protection structure, and can adapt to changing outdoor environments such as high temperature, low temperature, sand and dust. Equipped with a high brightness outdoor visual touch screen, screen data can still be read clearly in strong light environments without the need for additional shading treatment. The long-lasting dual battery power supply system ensures the long-term field inspection endurance requirements. A single person can complete the entire equipment handling and on-site operation without the need for multiple people to cooperate in handling bulky instruments, effectively reducing on-site labor costs. The equipment can be used in both laboratory testing and outdoor on-site scenarios. In the component production quality inspection process, it can complete the IV performance sampling of finished components and screen for products with substandard factory power; During the construction and acceptance stage of the power station, it is used to verify the actual output performance of the string and promptly detect wiring and matching problems caused by construction; In long-term operation and maintenance work, periodic testing can track the aging and decay of components, providing data basis for improving the quality and efficiency of power plants.
The digital function is a major highlight of JW-IV10. The instrument is equipped with a professional detection and analysis system, which automatically generates performance reports after testing, including curve graphs, parameter comparisons, loss analysis, etc. It supports local storage and export, meeting the practical needs of third-party testing agencies for report issuance and power plant archive retention. The instrument can be paired with radiation and temperature acquisition modules to automatically convert on-site measured data to STC standard testing conditions, eliminating data interference caused by light and temperature fluctuations, ensuring comparability of detection results at different times and locations, and avoiding misjudgments caused by environmental factors.
The current photovoltaic industry has shifted from high-speed construction to emphasizing both construction and operation, and the quality of power station operation and maintenance directly determines project investment returns. Many power plants suffer from long-term loss of power generation due to hidden component failures, and efficient and reliable on-site testing equipment is the fundamental guarantee for solving such problems. The Jiangsu Jingwei JW-IV10 portable IV tester balances portability and professional measurement performance, breaking the limitations of traditional equipment usage scenarios and adapting to most project types such as ground photovoltaics, household distributed photovoltaics, and industrial and commercial rooftop photovoltaics. With stable and reliable test performance, this equipment has been selected by numerous operation and maintenance enterprises, third-party testing agencies, and power plant owners. In the future, Jiangsu Jingwei will continue to deeply cultivate the photovoltaic testing track, iterate product algorithms and hardware performance, and output more domestically produced testing equipment for the high-quality development of the new energy industry, helping photovoltaic power plants tap into their power generation potential and ensuring long-term stable returns on photovoltaic assets.
Outdoor IV tester, photovoltaic power station IV power detector, current voltage power curve detector
