With the comprehensive entry of the domestic photovoltaic industry into the era of 1500V high-voltage string, the large-scale popularization of high current half sheets and stacked tile components, as well as the completion acceptance, daily operation and maintenance, and third-party quality inspection of power plants, traditional 1000V range IV testers have encountered pain points such as insufficient range, slow detection speed, and cumbersome outdoor operation. The industry urgently needs a new generation of power detection equipment that balances high precision, portability, and full field adaptability. Suzhou Laikesi New Energy Technology Co., Ltd. (LAILX), relying on more than ten years of research and development experience in photovoltaic testing instruments, has launched the LX-PV31 portable IV tester. With a 1500V/30A ultra large testing range, 10 second high-speed curve scanning, and wireless integrated testing architecture, it covers the entire process of component incoming inspection, power station grid connection acceptance, and fault attenuation investigation. It has become a standardized testing equipment for photovoltaic practitioners and comprehensively solves various industry problems in high-voltage photovoltaic system efficiency testing. Photovoltaic power station IV power detector

The core hardware performance of LX-PV31 is benchmarked against international first-line testing equipment, completely breaking through the limitations of traditional model parameters. It supports up to 30kW power range detection, with a current measurement accuracy of ± 0.5% ± 0.02A and a power testing repeatability error controlled within ± 0.5% ± 3W. The power accuracy under STC standard testing conditions is better than ± 5%, fully meeting the strict requirements of GB/T and IEC photovoltaic module testing standards. The equipment can fully collect more than 20 core parameters such as IV curve, PV curve, open circuit voltage, short-circuit current, peak power, fill factor, conversion efficiency, series parallel resistance, etc. It is synchronously equipped with high-precision irradiance probes and temperature sensors to collect real-time environmental irradiance and component temperature data, automatically complete standard operating condition conversion, accurately restore the real power generation performance of components, quickly distinguish power loss caused by component attenuation, shadow obstruction, and internal degradation, and provide quantitative data support for the traceability of power generation loss in power plants.

In terms of outdoor operation adaptation, LX-PV31 fully considers the needs of photovoltaic on-site mobile detection. The total weight of the machine is less than 6kg, and the integrated aluminum alloy protective case is equipped with a handle and a portable strap. A single person can carry it back and forth to various photovoltaic power stations on the roof, mountains, and water surfaces. The host and irradiation probe adopt a Bluetooth wireless communication solution up to 100 meters away, eliminating the need for long line dragging and wiring, making high-altitude and long-distance string detection operations safer and more convenient; The exclusive patented probe bracket can be quickly fixed on the surface of the component, without the need for manual holding, greatly reducing the labor intensity of long-term outdoor operations. The body is equipped with a 6.5-inch high-definition touch color screen visible under sunlight, supporting bilingual switching between Chinese and English, dual operation mode of touch buttons, clear and readable data in strong light environment, minimalist operation logic, and zero basic operation and maintenance personnel can independently complete the entire testing process after brief training. The device is equipped with a large capacity replaceable lithium battery, which can last for 8 hours of uninterrupted testing when fully charged, to cope with the anxiety of no battery life during all day field inspections. The local storage space in the machine can store more than 2000 sets of test waveforms, and with an SD card expansion slot, massive detection data can be fully retained, eliminating the problem of on-site data loss.

The intelligent functional design greatly improves the efficiency of batch testing. LX-PV31 is equipped with a barcode scanning and recognition module, which inputs component barcodes before testing and automatically binds data and components one by one. In the later stage, fault tracing and ledger organization do not require manual matching, simplifying the digital management process of power plants. The device supports automatic continuous testing mode with an interval of 20 seconds, conducting continuous comparative testing for multiple strings in the same array, and intuitively capturing the performance differences of different components; Equipped with professional analysis software on PC, one click export of PDF testing reports and Excel raw data, automatic generation of IV curve comparison charts, which can be directly used by third-party testing agencies to issue authoritative testing documents. The safety protection system is also perfect. The whole machine adopts a high-voltage isolated power supply architecture, integrates triple automatic power-off protection for overvoltage, overcurrent, and overtemperature, and is equipped with high-voltage insulation test leads to avoid the risk of electric shock throughout the operation. The whole machine has passed CE and ROHS certification and complies with domestic photovoltaic electrical safety operation standards.

From the perspective of downstream application scenarios, LX-PV31 is suitable for four core scenarios: incoming material inspection of photovoltaic module factories, grid connection acceptance of EPC power stations, annual inspection of operation and maintenance enterprises, and quality appraisal by third-party testing institutions. For distributed rooftop photovoltaics, the lightweight body can be easily transported to small spaces on rooftops; A large ground high-voltage power station with a high current range of 30A is perfectly adapted to high-power string testing, without the need to split the circuit into sections for testing, and the detection efficiency is more than doubled. The R&D leader of LAILX in Suzhou stated that LX-PV31 is the core product of the enterprise focusing on the localization of domestic photovoltaic testing equipment. Relying on fully self-developed circuit algorithms and hardware modules, it can overcome the shortcomings of high imported equipment prices and lagging after-sales service. At the same time, it provides 7 × 24-hour technical support, three-year warranty for the whole machine, and lifetime firmware free upgrade service.

At present, the scale of domestic photovoltaic power stations continues to expand, and precision and digital operation and maintenance have become the main development lines of the industry. The LX-PV31 portable IV tester, with its four core advantages of range, accuracy, portability, and intelligence, fills the gap in power detection of high-voltage photovoltaic systems, helps the photovoltaic industry achieve fine quality control throughout the entire life cycle, and promotes high-quality development of the new energy industry with domestically produced hard core testing equipment.

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