Against the backdrop of the continuous deepening of the dual carbon strategy, the installed capacity of domestic photovoltaic power plants has been climbing year after year, and various scenarios such as centralized ground power plants, distributed rooftop photovoltaics, and household photovoltaics have been expanding synchronously. The industry's demand for on-site portable high-precision electrical performance testing equipment has shown explosive growth. Traditional IV testing equipment generally suffers from pain points such as bulky body, small range, poor adaptability to outdoor environments, and insufficient data correction accuracy. The efficiency of operation and maintenance testing in complex terrains such as mountains, roofs, and complementary fishing and photovoltaics is low, making it difficult to meet the standardized testing requirements for the entire process of power station completion acceptance, annual performance sampling, troubleshooting, and component re inspection upon arrival. Jiangsu Jingwei Technology, which specializes in the research and development of photovoltaic testing instruments, has officially launched the JW-IV13 portable IV tester based on years of accumulation in photovoltaic electrical performance testing algorithms and hardware research and development. With four core advantages of high voltage and large range, lightweight body, intelligent environment correction, and integrated data output, it reshapes the industry standard for on-site IV testing of photovoltaics and provides lightweight and high-precision solutions for quality control throughout the entire lifecycle of photovoltaics. IV power detector
JW-IV13 has achieved comprehensive upgrades in core measurement performance, accurately adapting to the current mainstream 1500V high-voltage photovoltaic string system. The voltage testing range covers 0-1500V, and the current is 0-35A. It can fully cover the full specification testing needs of small household components to large high-power string, completely solving the industry problem that old 1000V range equipment cannot adapt to new high-voltage arrays. The device is equipped with a 16 bit high-precision AD sampling chip and millisecond level full segment IV curve scanning technology. It can complete the collection of more than ten core parameters such as short-circuit current, open circuit voltage, maximum power point, fill factor, conversion efficiency, etc. within 10ms. The current measurement resolution can reach 0.01mA and the voltage resolution is 0.1V. The four wire independent sampling architecture effectively eliminates data deviation caused by wiring contact resistance, and the comprehensive measurement error is controlled within ± 0.8%, fully complying with the national standards of IEC60904 and NB/T10394 for photovoltaic testing. The test data can be directly used as an effective basis for power plant acceptance and quality assurance dispute arbitration.
In response to the pain points of outdoor mobile work scenarios, Jiangsu Jingwei has optimized the lightweight structure of the JW-IV13 machine. The main unit is equipped with an integrated storage and protection box, and the total weight of the machine including cables is only 7.2kg. It can be carried and carried by a single person without the need for multiple people to cooperate in transportation. Narrow and complex work environments such as mountains, roofs, and floating photovoltaics on water can be flexibly accessed. The body protection level reaches IP64, with dustproof, rainproof, and high and low temperature resistance characteristics. It can operate stably in extreme outdoor environments from -20 ℃ to 60 ℃, and is not afraid of outdoor inspection conditions such as summer sun exposure, autumn and winter frost, and rainy weather. The device is equipped with a large capacity fast charging lithium battery, which can continuously complete more than 200 sets of string IV tests when fully charged. It does not require an external power supply for round the clock inspections in remote areas without electricity and photovoltaic fields; Equipped with extended wear-resistant testing cables, suitable for high supports and long-distance string testing. The cable joints are designed with anti loosening locks, making them less likely to fall off during high-altitude operations.
The intelligent function significantly reduces the operating threshold for operation and maintenance personnel. The JW-IV13 is equipped with a 10 inch high-definition touch operation screen, a fully Chinese visual interactive interface, and does not require complex parameter debugging. After wiring is completed, it can start automatic detection with one click. The device is equipped with an intelligent irradiation temperature correction algorithm, which can synchronize external irradiance and temperature sensors, collect real-time on-site environmental parameters, automatically convert the measured power to STC standard testing conditions, and avoid power misjudgment caused by weak light and large temperature differences in the morning and evening. Built in local high-capacity storage module, capable of storing over 10000 sets of IV curve raw data and detection parameters, supporting USB one click export and wireless transmission to computer terminals. Equipped with dedicated analysis software, it automatically generates standardized detection reports, fully recording component numbers, detection time, environmental parameters, IV curve diagrams, and power deviation analysis content. The report format is compatible with archiving standards of major energy groups and third-party testing institutions. At the same time, the system is equipped with intelligent fault determination logic, which automatically labels and warns of abnormal working conditions such as power attenuation, string mismatch, shielding loss, and diode failure. Operations personnel can quickly locate problematic components, greatly reducing the troubleshooting cycle of power plants.
From the perspective of application scenarios, JW-IV13 can cover the entire detection chain of the photovoltaic industry: outdoor sampling inspection of photovoltaic module factories to quickly verify the consistency of module nominal power; During the completion and acceptance stage of the photovoltaic power station, complete the performance verification of the whole station string sampling to ensure the quality of project delivery; Annual inspection of daily operation and maintenance of power stations, tracking the decay rate of components year by year, and predicting the loss of power generation revenue; Upgrading and renovating old power stations, screening for inefficient fault clusters, and optimizing matrix matching; Third party photovoltaic testing institutions conduct on-site inspections, and the lightweight body adapts to multiple project operations.
The technical director of Jiangsu Jingwei stated that the original intention of the development of JW-IV13 is to solve the three major pain points of "heavy, slow, and inaccurate" in front-line operation and maintenance testing. While ensuring laboratory level measurement accuracy, it maximizes outdoor portability and intelligence level. The equipment undergoes 72 hours of high and low temperature aging, continuous cycle testing and calibration before leaving the factory. The overall warranty period of the machine is up to 2 years, and the localized technical after-sales team covers the whole country, providing one-stop services such as on-site debugging, operation training, and annual calibration.
Under the trend of cost reduction, efficiency improvement, and refined operation and maintenance in the photovoltaic industry, lightweight, high-precision portable detection instruments have become a must-have for improving the quality and efficiency of power plants. Jiangsu Jingwei JW-IV13 portable IV tester provides efficient and reliable on-site electrical performance testing tools for photovoltaic practitioners with the advantages of hard core performance and scene adaptation. It continues to support the high-quality and standardized development of the domestic photovoltaic industry with self-developed testing equipment, laying a solid data foundation for the long-term stable operation of photovoltaic power generation systems.
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