With the sustained high-speed development of the domestic photovoltaic industry, various large-scale ground power stations, mountain photovoltaic, industrial and commercial distributed, and household photovoltaic projects have been implemented on a large scale. The work pressure of post operation and maintenance, on-site acceptance, and fault diagnosis of power stations continues to rise. As the core unit of power generation in a power station, the actual output power, attenuation, and electrical performance of photovoltaic string directly determine the overall power generation revenue. Traditional detection equipment has practical pain points such as insufficient range, slow testing speed, large environmental interference, and poor outdoor portability. The industry market urgently needs a domestically produced IV detection equipment that balances high precision, strong portability, and intelligence. Shanghai LAILX closely follows the industry development trend and launches the LX-PV32 portable IV tester, targeting power plant EPC enterprises, third-party testing institutions, and photovoltaic operation and maintenance service providers, providing a complete and reliable domestic solution for photovoltaic on-site performance testing. Outdoor IV tester

The LX-PV32 portable IV tester is designed specifically for the current mainstream 1500VDC high-voltage photovoltaic systems, with a voltage range covering 10V-1500V and a maximum current of 20A. It can fully measure more than 20 core electrical parameters such as I-V curve, P-V curve, open circuit voltage, short-circuit current, peak power, fill factor, conversion efficiency, series parallel resistance, etc. It covers the full dimensional performance testing work from individual components to the entire string, and is suitable for the vast majority of photovoltaic products on the market such as N-type, P-type, half sheet, and double glass. The equipment adopts self-developed high-precision load modules, with a voltage measurement accuracy of ± 0.5% ± 0.2V and a current accuracy of ± 0.5% ± 0.01A. Even for old strings with weak performance degradation, subtle changes in the curve can be captured and performance abnormalities can be accurately located. The instrument is equipped with high-precision irradiance sensors and temperature sensing probes, supports wireless signal transmission, and can synchronously collect solar irradiance, ambient temperature, and component backplane temperature. It relies on built-in algorithms to automatically correct test data under STC standard operating conditions, eliminating data deviations caused by lighting fluctuations and temperature changes. Even in complex outdoor lighting conditions, it can still output stable and reliable detection results, providing solid data support for power plant PR value calculation and power attenuation evaluation.

At the practical level of on-site operations, LX-PV32 fully considers various complex working conditions for outdoor testing and deeply optimizes the portability of the entire machine. The whole machine adopts an integrated compact body, matched with a high-strength protective box, which is earthquake resistant and drop resistant, easy to transport and carry, and can be transported and operated on site by one person. The device is equipped with a 6.5-inch high-definition touch screen visible under sunlight, supporting bilingual operation interfaces in Chinese and English. The operation logic is simple and clear, and frontline operation and maintenance personnel can independently carry out testing work after simple training, without the need for complex professional knowledge reserves. The host is equipped with a large capacity lithium battery, which does not require external power supply. It can complete long-term outdoor inspection tasks without power supply, truly realizing the ability to test and inspect on the go. The entire testing process is highly efficient, with a complete scan and detection of a photovoltaic string taking only about 10 seconds. A single device can complete a large number of string detection tasks in a single day, significantly improving the detection efficiency compared to traditional equipment and effectively reducing the labor and time costs of full-scale detection in large power plants.

In terms of data storage and management, LX-PV32 has a built-in large capacity storage space, which can store more than 2000 sets of complete IV test waveform data. It supports quick export from USB flash drives and is equipped with professional PC analysis software. It can complete waveform review, horizontal comparison of multiple sets of data, and automatically generate detection reports, making it convenient for enterprises to complete archive filing, problem tracing, and project acceptance data organization. Compared with similar imported equipment, LX-PV32 achieves independent and controllable core components and algorithms, breaking the technical barriers of overseas equipment. It has outstanding advantages in procurement costs, spare parts supply, and localized technical services, solving industry problems such as long after-sales cycles, high maintenance costs, and inconvenient technical communication for imported equipment. LAILX can provide customers with full lifecycle services such as on-site practical training, remote technical support, and regular firmware upgrades to ensure the long-term stable operation of equipment.

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