With the continuous high-speed expansion of the domestic new energy industry, the installed capacity of photovoltaic power plants continues to rise, and the 1500V high-voltage system has gradually become the mainstream of the industry. Large quantities of high-power half chip components have been put into the market, and problems such as insufficient range of traditional detection equipment, bulky handling, and poor adaptability to outdoor operations have become increasingly prominent, seriously restricting the acceptance, fault diagnosis, and daily inspection work of power plants. Suzhou Laikesi LAILX has been based in the photovoltaic testing industry for many years, and has launched the LX-PV31 portable IV tester based on the actual working conditions of a large number of power plant sites. With high precision, strong portability, and high safety comprehensive performance, it provides reliable on-site solutions for photovoltaic module and string electrical performance testing, and promotes the further upgrading of photovoltaic life cycle quality control capabilities. Photovoltaic power station IV power detector

In terms of hardware performance, the LX-PV31 is designed specifically for 1500V high-voltage photovoltaic systems, with a testing range of up to 1500V/30A and a power coverage of 50W-30kW. It is perfectly compatible with mainstream large-sized half piece components and high-power string devices on the market, completely solving the industry pain point of old 1000V range equipment not being able to match new photovoltaic products. The equipment is equipped with high-performance acquisition chips, with a voltage measurement accuracy of ± 0.1% FS and a current measurement accuracy of ± 0.2% FS. The overall testing error of the whole machine is controlled within a very small range. A single detection can fully output the IV curve and PV curve, synchronously calculate more than 20 key parameters such as open circuit voltage, short-circuit current, peak power, fill factor, conversion efficiency, series parallel internal resistance, etc. The test data can be directly used as an effective basis for power plant acceptance, component quality judgment, and fault tracing. The entire testing process is highly efficient, with only 10 seconds required for single string and complete testing, which is more than 70% more efficient than traditional split equipment. In large-scale ground power station sampling scenarios, the operation and maintenance team can complete the screening of hundreds of string components in a single day, quickly locating inefficient and decaying abnormal fault strings, and reducing power generation losses.

The practicality of outdoor on-site operations is another highlight of LX-PV31. The whole machine adopts a high-strength pressure resistant protective box integrated packaging, modular circuit layout, and eliminates complex external accessories. The weight of the whole machine is effectively controlled, and the operation and maintenance personnel can complete the transportation with a single hand. Whether it is a mountain ground power station, a rooftop distributed photovoltaic, or a remote rural household photovoltaic project, the transportation and movement will not bring too heavy a burden. The device is equipped with a large capacity lithium battery, which can complete over 300 complete IV curve tests under full charge conditions. It can also operate continuously in outdoor environments without external power supply. The host and test probe support wireless Bluetooth communication, with a maximum communication distance of up to 100 meters. Staff can operate far away from high-voltage areas, improving work safety. Equipped with high-precision irradiance sensors and component temperature probes, it can synchronously collect environmental irradiance and component temperature, complete automatic correction of STC under standard conditions, eliminate data deviation caused by changes in sunlight, morning and evening, and ensure comparability of test results under different working conditions.
In terms of security protection and data management, the LX-PV31 is equipped with multiple protection mechanisms such as overvoltage, overcurrent, and reverse connection. When there is an abnormality in the high-voltage testing circuit, it can quickly respond to protect and avoid the risks of high-voltage detection operations. The body is equipped with a high-definition color touch screen, paired with physical buttons, and the reading is clear in strong light environment. It supports bilingual switching between Chinese and English, and novice operators can easily get started with simple training. The local storage of the device can store more than 2000 sets of test waveforms, support SD card expansion, and export data to a computer through a USB interface after testing is completed. The supporting analysis software can complete data playback, comparative analysis, and facilitate the maintenance unit to retain testing files and complete project archiving and filing work.

This instrument has a wide range of applications, covering pre grid inspection, construction acceptance, post disaster troubleshooting, third-party on-site sampling, annual regular operation and maintenance inspections, and other work related to photovoltaic power plants. During the construction phase of the power station, batch completion of string performance screening is carried out to ensure grid connection quality; Regular inspections during the operation and maintenance phase to promptly identify issues such as component hot spots, power decay, and aging deterioration; It can also be used for outdoor comparative testing in research institutions and component laboratories. The current photovoltaic industry is continuously evolving towards high voltage and high power. The portability, measurement accuracy, and safety performance of on-site testing equipment directly affect the revenue of power plants. The Suzhou LAILX LX-PV31 portable IV tester combines laboratory level measurement accuracy with adaptability to harsh outdoor working conditions, providing cost-effective domestic testing tools for EPC enterprises, operation and maintenance service providers, and third-party testing institutions, and helping the photovoltaic industry develop with high quality.

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