Against the backdrop of the continuous promotion of the dual carbon strategy and the widespread adoption of photovoltaic 1500V high-voltage systems, photovoltaic power plants require high-precision and highly adaptable IV curve detection equipment from module delivery, project completion and acceptance to long-term operation and maintenance. This equipment is used to determine the actual power of components, identify attenuation faults, and calculate power generation conversion efficiency. Traditional portable IV testers generally have shortcomings such as insufficient range, slow testing speed, cumbersome outdoor operation, and difficulty in data traceability, making it difficult to match the on-site testing needs of large-sized half piece components and high-capacity high-voltage strings. Suzhou Laikesi New Energy Technology Co., Ltd. (LAILX) focuses on the core pain points of photovoltaic testing and has independently developed and launched the LX-PV31 portable IV tester. With a large testing range, micrometer level measurement accuracy, lightweight integrated body, and a complete set of intelligent data management functions, LAILX creates a benchmark equipment for photovoltaic performance testing that is suitable for the entire field. LAILX provides one-stop outdoor power testing solutions for power plant owners, operation and maintenance enterprises, third-party testing institutions, and component manufacturers. IV power detector

The core breakthrough of LX-PV31 lies in the comprehensive upgrade of its range, which directly hits the pain points of the current 1500V photovoltaic system testing industry. The equipment supports a maximum DC voltage of 1500V and a testing current of 30A, covering all mainstream monocrystalline silicon, polycrystalline silicon, double glass, half sheet, perovskite photovoltaic modules and complete string detection in the range of 50W to 30kW. It completely eliminates the limitation of traditional 1000V/20A equipment that cannot adapt to high voltage and large capacity string. A single instrument can complete various project detection operations such as household distributed rooftop photovoltaics, industrial and commercial photovoltaics, mountain and desert centralized power stations, agricultural photovoltaic complementarity, fishery photovoltaic complementarity, etc., without the need to test multiple instruments in sections, greatly reducing equipment procurement, transportation, and labor costs. In terms of measurement accuracy, the equipment is equipped with self-developed high-precision load modules, with a voltage measurement resolution of up to 0.1V and a current resolution of 0.001A. The overall testing error of the machine is controlled within ± 0.5% ± 0.2V. A single scan can synchronously collect more than 20 core performance parameters, including I-V curve, P-V curve, open circuit voltage Voc, short-circuit current Isc, peak power Pmax, fill factor FF, photoelectric conversion efficiency, series resistance, parallel resistance and other key indicators. It fully restores the real power generation performance of photovoltaic modules, accurately distinguishes A-grade qualified components, attenuation B-grade components and faulty C-grade components, and provides credible quantitative detection data for component incoming quality inspection and power station completion verification.

For the convenience requirements of outdoor field operations, LX-PV31 adopts a lightweight integrated industrial packaging design. The whole machine is compact and can be carried by a single person. It is equipped with a high-strength protective storage box. It has a dust-proof and waterproof industrial protection grade, and its operating temperature covers -20 ℃ to 50 ℃. It is not afraid of extreme outdoor environments such as low plateau temperature, high desert temperature, high coastal humidity, dust rainstorm, etc. The device is equipped with a high-definition touch color screen visible under sunlight, with dual operation modes of touch screen and physical buttons, and a built-in bilingual operation interface in Chinese and English. Novices can complete the entire testing process independently through simple unboxing training. The industry-leading 10 second high-speed scanning technology greatly improves inspection efficiency. Traditional equipment single string testing takes more than 30 seconds, while LX-PV31 completes the entire set of curve collection and parameter calculation in just 10 seconds. The overall inspection time of megawatt level power plants can be compressed by 60%. Equipped with wireless irradiation and temperature sensing probes, it supports up to 100 meters of wireless data synchronization without the need for on-site wiring. It can synchronously collect real-time solar irradiance, ambient temperature, and component backplane temperature. It has built-in STC standard operating condition automatic conversion algorithm, which can calibrate the on-site measured data to the standard testing environment with one click, eliminating data deviation caused by light fluctuations such as morning and evening, cloudy and sunny, and ensuring that the detection results are horizontally compared, unified, objective and effective.

The intelligent data management system is the core advantage that sets LX-PV31 apart from similar products. The body is equipped with a large capacity local storage, which can store more than 2000 sets of complete IV curve waveforms and supporting environmental data. It supports SD card expansion to expand the storage limit; The device comes with a barcode scanning recognition module that can input the unique serial number of each component, enabling precise binding between each IV test curve and the corresponding component, forming a complete quality traceability file, and facilitating operation and maintenance personnel to track long-term power attenuation changes of individual components. All detection data and curve graphs can be exported to a USB drive with just one click, and are equipped with professional analysis software on the PC side. Standardized detection reports can be generated in batches, automatically calculating the proportion of faulty components, average power attenuation rate, and overall power generation loss estimation of the power station. There is no need to manually organize tables and graphs, greatly reducing the workload of report preparation in the later stage. At the level of safety protection, the equipment is equipped with multiple high-voltage protection mechanisms, integrating automatic cut-off functions for overvoltage, overcurrent, reverse connection, and short circuit. The high-voltage circuit isolation design avoids the risk of electric shock during outdoor high-voltage testing from a hardware perspective, ensuring the safety of frontline testing personnel.

In practical industry application scenarios, LX-PV31 covers the full lifecycle detection needs of the photovoltaic industry. Component manufacturing enterprises can use it for product sampling on production lines to quickly screen out defective components with power failure and abnormal internal resistance; During the logistics delivery process, on-site unpacking and testing are conducted to clarify the responsibility for power attenuation caused by transportation collisions and reduce disputes between supply and demand parties; During the completion acceptance stage of the power station, a third-party testing agency uses equipment to randomly inspect the entire array string, verify whether the actual installed power matches the design documents, and issue a compliance acceptance report; In the daily operation and maintenance inspection of the power station, the operation and maintenance team regularly scans the IV curves of each string, identifies hidden faults such as hidden cracks, PID attenuation, virtual soldering of wiring, and aging due to obstruction in advance, replaces faulty components in advance, and reduces overall power generation loss; Simultaneously adapting to photovoltaic empirical experiments in universities and research institutes, providing precise measured data support for the development of new solar cells and high-efficiency components.

Suzhou LAILX has been deeply involved in the research and development of photovoltaic detection instruments for many years. All software and hardware systems of LX-PV31 are independently developed by the original factory, and the complete set of accessories, sensors, and analysis software are uniformly matched. We provide nationwide on-site technical training, lifelong firmware free upgrades, 24-hour remote technical support, and localized after-sales maintenance services, which are different from the problems of fragmented after-sales service and upgrade fees for assembled detection equipment in the market. With the continuous expansion of domestic photovoltaic high-voltage system installation scale, precise, portable, and intelligent outdoor IV detection equipment has become a must-have for power plant operation and maintenance. LX-PV31, with its four core advantages of range, accuracy, portability, and intelligence, continues to reduce costs and increase efficiency for the photovoltaic industry, and uses precision detection technology to support the high-quality and sustainable development of the new energy industry.

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