Against the backdrop of the continuous implementation and promotion of the dual carbon strategy, China's photovoltaic industry is developing rapidly, and the 1500V high-voltage system has gradually become the mainstream configuration for large-scale ground bases, distributed industrial and commercial projects, and agricultural photovoltaic complementary projects. Large scale half piece components and high-power strings have been widely popularized. The power station relies on IV curve testing to complete power evaluation from component arrival acceptance, completion verification to later normalized operation and maintenance, accurately grasping the real power generation performance of components and strings. Traditional IV detection equipment generally suffers from problems such as insufficient range, bulky body, poor adaptability to outdoor environments, and high interference from light on test data. In complex work scenarios such as mountains, roofs, and water surfaces, it is difficult to transport and time-consuming to test, making it difficult to meet the detection requirements of current high-voltage and high-power photovoltaic systems, which restricts the overall efficiency improvement of detection work. Based on the practical needs of photovoltaic testing, LAILX of Suzhou Laikesi New Energy Technology Co., Ltd. has launched the LX-PV31 portable IV tester, relying on years of technological accumulation. With four core advantages of high voltage adaptation, high-precision acquisition, lightweight body, and intelligent correction algorithm, LAILX provides a mature and reliable integrated solution for full scene photovoltaic performance testing. IV power detector

The LX-PV31 portable IV tester is specially developed for 1500V DC photovoltaic systems, with a maximum test voltage of 1500V and a test current of up to 30A. It fully covers the testing range of mainstream high-power components and string testing in the current market, solving the industry pain point of traditional 1000V range equipment being unable to adapt to high-voltage systems. The device is equipped with a high-performance signal acquisition chip, with a voltage measurement accuracy of ± 0.1% FS and a current measurement accuracy of ± 0.2% FS. It can quickly output a complete IV curve, accurately calculate more than ten key parameters such as open circuit voltage, short-circuit current, maximum power point, fill factor, conversion efficiency, etc., effectively identify various fault problems such as component attenuation, shielding loss, wiring abnormalities, and string mismatch, and provide authoritative data support for quality judgment. In response to the changing outdoor lighting conditions, the instrument is equipped with a built-in light and temperature synchronization acquisition module, which can automatically convert the on-site measured data to STC standard testing conditions, eliminating data deviation caused by environmental fluctuations. Even in cloudy, low light environments in the morning and evening, stable and reliable detection results can still be obtained, greatly expanding the on-site applicability of the equipment.

In terms of operational efficiency, the LX-PV31 achieves comprehensive optimization of the testing process, with a complete set of testing completed in just about 10 seconds for a single component or string. Compared to old-fashioned equipment, it achieves a double increase in testing speed. In large-scale power plant inspection operations, it can effectively shorten the on-site operation time and reduce the workload of operation and maintenance personnel. The whole machine adopts a high-strength industrial protective box integrated packaging, with modular layout of internal circuits and elimination of redundant external accessories. The weight of the whole machine is greatly reduced, and it can be transported by a single person's hand. Whether it is climbing the roof distributed photovoltaic, traveling to and from rugged mountain power stations, or driving to remote household photovoltaic sites, it will not cause any transportation burden, truly realizing on-demand testing and mobile operations without being constrained by site conditions. The equipment is equipped with a high-definition touch screen display, with simple and easy to understand operation logic. The operation and maintenance personnel can get started with simple training. After the test is completed, the data is automatically stored locally, supporting image and report export. It can be connected to the LAILX cloud platform to complete data upload and archiving, facilitating later traceability and report preparation, meeting the diverse usage needs of third-party testing institutions, power station operation and maintenance enterprises, component manufacturers, and scientific research laboratories.

In addition to hardware performance, the device fully considers complex outdoor working conditions, and the dust-proof and waterproof structure design can resist wind, sand, and rain intrusion. The working temperature covers -20 ℃ to 50 ℃, and it can operate stably in both high temperature summer and low temperature winter. The instrument comes with a comprehensive protection mechanism, including multiple protections against overvoltage, overcurrent, and reverse connection, to avoid the risk of equipment damage caused by on-site misoperation and ensure the safety of personnel and instruments. The current photovoltaic industry has entered a stage of parallel development between existing operation and new construction projects. Component quality control and power station performance evaluation are becoming increasingly important. The LX-PV31 portable IV tester balances range, accuracy, portability, and stability, and can be used for component factory sampling and quality inspection, as well as project completion acceptance, fault diagnosis, annual performance survey, and other work. It is suitable for almost all photovoltaic application scenarios such as centralized large bases, industrial and commercial rooftops, household photovoltaics, and fishery photovoltaic complementarity. As a benchmark product for domestic portable IV testing, LX-PV31 breaks free from the high price constraints of imported equipment and provides high cost-effectiveness, stable and reliable on-site performance to help reduce costs and increase efficiency in the testing process of the photovoltaic industry. It promotes the implementation of a quality control system for the entire life cycle of photovoltaic power plants and injects technical strength into the high-quality development of the new energy industry.

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