Under the trend of large-scale and modular development in the domestic photovoltaic industry, double glass and half panel high-power modules are widely popularized. The power station acceptance, operation and maintenance, and third-party testing industries have raised higher standards for IV curve testing equipment. Traditional desktop testers are bulky, have poor outdoor adaptability, insufficient range of old portable devices, and distorted calculation of double-sided modules, which have long constrained the efficiency of photovoltaic on-site testing work. Suzhou Laikesi New Energy Technology Co., Ltd. (LAILX) has been deeply engaged in the research and development of photovoltaic testing instruments for more than ten years, focusing on the core pain points of outdoor on-site testing. It has launched the LX-PV33 portable IV tester, which uses a 2000V/40A wide range, double-sided component specific calculation algorithm, and lightweight integrated body to complete the comprehensive electrical performance testing of components and strings in one stop. It redefines the performance standards of outdoor photovoltaic IV testing equipment and provides highly reliable professional solutions for the operation and maintenance of photovoltaic power plants, component factory quality inspection, and third-party testing institutions nationwide. Outdoor IV tester

The core breakthrough of LX-PV33 lies in the wide range hardware architecture upgrade. It is designed for the mainstream high-power dual glass components and 1500V/2000V high-voltage string in the current market. It supports up to 2000V DC voltage and 40A current synchronous acquisition, completely solving the industry problem that traditional 1000V/20A equipment cannot adapt to new high-power components. The equipment is equipped with a high-precision acquisition module developed by Lexus, with a voltage measurement accuracy of up to 0.1V and a current measurement accuracy of 0.001A. It can fully draw I-V and P-V hyperbolas, automatically calculate more than ten core electrical parameters such as open circuit voltage Voc, short-circuit current Isc, peak power Pmax, fill factor FF, component conversion efficiency, and series parallel internal resistance. The data synchronization is completed according to STC standards for irradiance and temperature correction, and the test results fully comply with GB/T and IEC photovoltaic testing specifications. The data can be directly used for power station grid connection acceptance reports. For the pain points of double-sided double glass component detection, LX-PV33 is equipped with a built-in multi irradiation compensation algorithm, which can automatically shield the radiation interference reflected by the back panel, accurately distinguish the power generation contributions of the front and back sides, and separately calculate the standard conversion efficiency of the front battery cells. It solves the common problem of large measurement deviation and data distortion of double-sided components in similar devices on the market, and is a specialized equipment for double glass component production and outdoor on-site detection.

Portable and outdoor adaptation design is another core advantage of LX-PV33. The whole machine adopts an integrated body, and the split bulky structure is eliminated. The whole host, wireless radiation probe, temperature sensor, and test cable are stored in the shock proof protection box, which can be transferred by a single hand. Complex outdoor scenes without fixed power supply, such as mountains, roofs, deserts, and mudflat, can be operated quickly. The host and irradiation/temperature probes support 100 meter wireless communication, eliminating the need for maintenance personnel to travel back and forth between devices and components. A single person can independently complete the entire string of component testing, greatly reducing on-site inspection time. The device is equipped with a high-definition touch color screen visible under sunlight, with clear and readable data in strong light environments. It supports dual operation modes of touch and physical buttons, and can be operated smoothly even when wearing gloves outdoors; The body is equipped with a large capacity storage, which can store more than 2000 sets of test curves and data. It is matched with an SD card expansion slot to meet the storage needs of large-scale power plant batch testing. At the same time, it is equipped with a USB data export interface and professional analysis software on the PC side, which can export curve graphs and generate standardized testing reports with one click. It supports data printing, archiving, and traceability management, and is suitable for the compliance requirements of third-party testing institutions.

In terms of safety protection and durability, LX-PV33 fully considers the harsh outdoor environment of photovoltaic operations. The entire machine shell is designed with dust-proof and anti drop protection, and is equipped with multiple hardware protection circuits for overvoltage, overcurrent, reverse connection, and overheating. In case of wiring errors or component short circuits, the equipment automatically cuts off the output to avoid damage to the instrument and photovoltaic components, ensuring the personal safety of operators. The equipment is equipped with a dedicated component fixing bracket, and the irradiation probe and temperature sensor can be quickly adsorbed and fixed on the surface of the component without the need for manual handheld operation, reducing data errors caused by human operation; Support barcode scanning to input component numbers, achieve one-to-one binding of component and string data, facilitate the traceability of power station faults in the later stage, quickly locate inefficient, attenuated, and hidden fault strings, help operation and maintenance personnel accurately identify the problem of reduced power generation, and improve the overall power generation revenue of the power station.

At present, there are over one million existing photovoltaic power stations in China, and new centralized and distributed power stations are continuously expanding. Problems such as component aging, power attenuation, and imbalanced string matching are increasing year by year, making efficient and accurate IV detection equipment a necessity for operation and maintenance. The LX-PV33 integrates multiple advantages such as high power range, double-sided component algorithm, wireless portability, and intelligent data management, balancing laboratory sampling and outdoor on-site use. It is suitable for factory quality inspection and production line sampling of photovoltaic modules, as well as meeting the needs of grid connection acceptance, annual inspection, and fault troubleshooting for ground power stations, household photovoltaics, and commercial rooftop power stations. Suzhou LAILX relies on its own research and development laboratory and a comprehensive after-sales system to provide a one-year warranty for the LX-PV33, lifetime free software upgrades, and nationwide on-site technical training services, covering core photovoltaic regions such as Xinjiang, Qinghai, Inner Mongolia, Jiangsu and Zhejiang, and South China.

From technology research and development to practical application, LX-PV33 is an important achievement of LAILX's localization of domestic photovoltaic testing equipment, breaking the market monopoly of high prices and lagging after-sales service of imported IV testers from overseas. With high cost-effectiveness, localized adaptation, and improved service system, it helps the domestic photovoltaic industry to standardize testing and upgrade intelligent operation and maintenance. In the future, Suzhou Laikesi will continue to iterate photovoltaic detection hardware and intelligent algorithms, creating a complete series of integrated detection equipment matrix around IV, EL, thermal imaging, meteorological monitoring, and safety inspection, and continuously outputting domestically produced hardcore detection equipment for the high-quality development of the clean energy industry.

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