As the global photovoltaic industry accelerates its upgrade towards high-power, double-sided double glass modules, diversified power station scenarios such as mountains, water surfaces, and distributed roofs continue to expand. Pain points such as insufficient range of traditional photovoltaic IV detection equipment, distorted calculation of double-sided modules, and low outdoor detection efficiency are becoming increasingly prominent. Based on the testing needs of the entire photovoltaic industry chain, Suzhou Laikesi New Energy Technology Co., Ltd. (LAILX) has officially launched the LX-PV33 portable IV tester, relying on years of research and development of sensors and power testing algorithms. With a 2000V/40A ultra large testing range, self-developed double-sided component irradiation correction algorithm, and lightweight outdoor adaptation design, it creates an integrated testing equipment that integrates component performance calibration, string fault diagnosis, and power station acceptance testing. It fully adapts to the on-site testing needs of new photovoltaic systems and provides accurate data support for improving the quality and efficiency of photovoltaic power stations and standardizing acceptance. Current voltage power curve detector

The current mainstream single string open circuit voltage of half chip, stacked tile, and double-sided double glass components in the market generally exceeds 1500V, and the peak operating current has increased to over 30A. Traditional 1000V/20A range IV equipment cannot fully collect high-power string IV curves, which is prone to problems such as data truncation and low power calculation, and cannot meet the requirements of grid connection acceptance and operation and maintenance evaluation standards. LX-PV33 breaks through the range bottleneck with targeted solutions, covering voltage testing range from 0 to 2000V and current detection range from 0 to 40A. It is fully compatible with 1000V, 1500V, and 2000V full voltage level photovoltaic string. A single device can complete the full specification testing of household small components, industrial and commercial distributed arrays, and large ground power station high-voltage string without the need for multiple devices to perform segmented testing, greatly reducing the equipment procurement and carrying costs for operation and maintenance enterprises. At the hardware level, it is equipped with an industrial grade 24 bit high-precision sampling chip and a dynamic capacitor simulation load circuit. The entire process is high-density sampled to draw complete IV and PV hyperbolas, accurately extracting the five core performance parameters of open circuit voltage Voc, short-circuit current Isc, peak power Pmax, fill factor FF, and photoelectric conversion efficiency. It synchronously calculates hidden fault indicators such as series resistance and parallel resistance, and the overall measurement error is controlled within ± 0.3%, fully complying with the national standards of GB/T 6495 and IEC 61853 for photovoltaic module performance testing. The detection report generated by the equipment has CMA third-party acceptance and credibility, and can be directly used for power plant grid registration, component quality dispute judgment, and annual energy efficiency evaluation.

Double sided double glass modules are currently the mainstream selection for photovoltaic power plants, but conventional IV equipment cannot distinguish the radiation power generation on the front and back sides of the module. The reflected light from the back panel will interfere with the standard power calculation, resulting in distortion of the conversion efficiency evaluation under STC standard conditions and unable to truly reflect the power generation loss of the module. The LX-PV33 is equipped with LAILX's independently developed multi irradiation layered correction algorithm, which can collect real-time data on on-site irradiance, environmental temperature, and component backplane temperature. It automatically shields the interference of backside power generation values, independently converts the standard test power of frontal battery cells, and accurately identifies power attenuation problems caused by hidden cracks, local mismatches, diode failures, etc. of double-sided components, filling the gap in accurate measurement technology for outdoor double-sided components in the industry. The LXH506 portable weather station equipped with the equipment can achieve data linkage, synchronously collect on-site meteorological parameters, and complete the conversion of measured data to STC standard working conditions with one click, completely eliminating data deviation caused by outdoor lighting and temperature fluctuations, and ensuring horizontal comparability of detection results at different time periods and sites.

The practicality of outdoor operations is the core optimization direction of LX-PV33. The whole machine is integrated into a high-strength IP67 waterproof and shock-absorbing protective box. The box is made of impact resistant modified engineering plastic, which is dustproof, waterproof, and resistant to high and low temperatures. It can adapt to harsh outdoor conditions such as desert sandstorms, high salt spray on the beach, low temperatures in winter, and exposure to sunlight in summer. The weight of the whole machine is less than 9kg, and a single person can carry it to complete the transportation and installation of complex sites such as mountains and roofs. The body is equipped with a 7-inch high-definition touch color screen visible under sunlight, a fully Chinese intelligent operating system, simplified and optimized interface logic, supports barcode scanning to automatically match component models, and has a built-in component specification database covering more than 100 first-line manufacturers worldwide. No manual parameter input is required to switch product models, and zero basic operation and maintenance personnel can proficiently operate the entire testing process within half an hour. The detection speed has achieved a leapfrog upgrade. The complete IV curve scan of a single component only takes 10 seconds, and the detection time of the entire high-voltage string does not exceed 1 minute. It can stably complete batch detection of more than 120 components in a single day, which improves the detection efficiency by more than 60% compared to traditional equipment and greatly shortens the survey period of large power stations. The power supply system is equipped with a large capacity replaceable lithium battery, which can last for 8 hours of uninterrupted continuous testing when fully charged. It supports fast charging technology and can be fully charged in 2 hours. Coupled with low battery intelligent warning, it prevents power outages during outdoor testing; The device comes with 32GB local storage, which can store more than 10000 sets of curve data. It supports USB and Bluetooth dual channel data export, and is equipped with professional analysis software on the PC to automatically generate standardized detection reports. It synchronously marks the fault points of power attenuation exceeding the standard and internal resistance abnormality, making it easy for operation and maintenance personnel to quickly formulate maintenance plans.

The application scenarios of LX-PV33 cover the entire photovoltaic industry chain and process, and are used for factory finished product sampling in component manufacturing enterprises to accurately control product power consistency; During the construction phase of the power station, it is used for conducting a comprehensive performance survey of the entire array before grid connection, screening for degraded and mismatched components, and avoiding losses from rework upon completion; In daily operation and maintenance, regularly detect changes in string performance, quantify power generation losses caused by hot spots and hidden cracks, and accurately locate inefficient branches; In the field of renovation of old power stations and evaluation of second-hand component recycling, the remaining power generation performance of components can be quickly determined, providing objective data basis for asset valuation and renovation plan formulation. Suzhou LAILX is equipped with a complete full cycle service system, providing a one-year original factory warranty for all equipment, lifetime free software algorithm upgrades, and setting up technical service outlets in multiple parts of the country. 24-hour online technical Q&A is available, and customized development services can be provided according to the needs of large testing institutions and photovoltaic groups.

In the context of the transformation of the photovoltaic industry towards refined digital operation and maintenance, precise, portable, and integrated on-site detection equipment has become a must-have for the industry. The LX-PV33 portable IV tester, with its ultra large range, dedicated algorithm for double-sided components, and highly adaptable outdoor design, solves the long-standing pain points of detection accuracy and efficiency in the industry, and continues to promote the standardization and digital upgrading of photovoltaic power station detection. In the future, LAILX in Suzhou will continue to deepen its research and development of core photovoltaic detection technologies, iteratively optimize testing algorithms and hardware performance, and launch more professional detection equipment that is compatible with new battery modules and integrated energy storage systems, using hardcore technology to support the high-quality and sustainable development of the domestic photovoltaic industry.

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