Against the backdrop of the large-scale development of the domestic photovoltaic industry, ground power stations and distributed photovoltaic projects continue to be implemented, and component performance testing has become an essential part of power station acceptance, daily operation and maintenance, and fault diagnosis. The actual output performance of photovoltaic strings directly determines the overall power generation revenue. The IV curve test can provide intuitive feedback on core parameters such as open circuit voltage, short-circuit current, peak power, and conversion efficiency of the components, helping operation and maintenance personnel quickly locate various problems such as component attenuation, hidden cracks, and mismatch. In the past, traditional IV detection equipment generally had shortcomings such as bulky body, cumbersome on-site layout, and poor outdoor environment adaptation. Many old equipment had strict requirements for lighting conditions, making it difficult to achieve efficient detection in complex working conditions such as mountains, deserts, and distributed roofs, which hindered the progress of photovoltaic on-site detection work. Suzhou Laikesi New Energy Technology Co., Ltd. (LAILX) focuses on the pain points of frontline photovoltaic testing and has independently developed and launched the LX-PV32 portable IV tester. With high range, high precision, and strong portability, LAILX provides stable and reliable on-site testing solutions for all types of photovoltaic projects, helping to improve the quality and efficiency of photovoltaic industry testing work. Current voltage power curve detector

The LX-PV32 portable IV tester is designed for 1500V DC photovoltaic systems and can complete IV and PV curve scanning tests for single components up to the entire string. The equipment covers a complete set of key indicators such as voltage, current, peak power, fill factor, series parallel resistance, etc. It is also equipped with high-precision irradiance sensors, component temperature probes, and environmental temperature acquisition modules. During the testing process, the on-site environmental conditions are synchronously recorded, and STC standard condition parameter conversion is completed, making the on-site measured data have horizontal comparative analysis value. The whole machine adopts a high-strength waterproof protective box integrated design, with a built-in large capacity lithium battery, freeing itself from the constraints of mains power. Outdoor operations can be carried out all day long without the need for an external power source. The 6.5-inch color touch screen is visible under sunlight, and with physical buttons, curves, waveforms, and values can still be read clearly under strong light, greatly reducing the threshold for frontline personnel to operate. The weight control of the entire equipment is reasonable, and a single person can complete the entire process of handling, wiring, and testing without the need for multiple people to collaborate in handling heavy instruments, greatly reducing the labor cost of on-site inspections.

In terms of actual detection efficiency, the LX-PV32 achieves ten second fast curve scanning, and a single string completes a complete set of tests and data storage in a very short time. Faced with large-scale ground power station string inspection tasks, it can significantly improve detection throughput and shorten on-site construction period. The host and environmental probe support wireless communication, with a maximum communication distance of up to 100 meters. Testers do not need to run back and forth to adjust the probe position, and radiation and temperature data can be stably collected at the far end of the component array. With a patented probe fixing bracket, the probe can be quickly fixed on the surface of the tested component, reducing data drift caused by manual handheld operation. The device integrates barcode scanning and recognition function. The operation and maintenance personnel scan the component nameplate barcode, and the system automatically enters the component model parameters, automatically matches the corresponding database to complete parameter correction, reducing human errors caused by manual input. The test data is automatically stored, and the machine can save a large number of IV curve files. It also supports SD card export and Bluetooth transmission, and is equipped with professional analysis software on the computer side. It can complete batch data sorting, curve comparison, and component level determination, making it convenient for testing institutions to issue formal testing reports.

This device is widely compatible with various business scenarios. During the completion and acceptance process of photovoltaic power plants, it can complete sampling and testing of incoming components to verify whether the actual output power meets the design specifications; During the operation and maintenance inspection phase, IV diagnosis is carried out for strings with low power generation to distinguish between component body faults and performance losses caused by wiring or obstruction; Third party testing institutions, research laboratories, and component manufacturing enterprises can also use it for outdoor empirical experiments and product performance comparison testing. Compared to imported similar equipment, LX-PV32 has undergone extensive localization optimization for domestic photovoltaic field conditions, with a fully Chinese operating interface and functional logic that conforms to the usage habits of domestic operation and maintenance personnel. The equipment procurement cost and later maintenance cost are more advantageous. At the same time, the manufacturer provides comprehensive technical support, including operation training, free firmware upgrades, and quick fault response services. With the continuous growth of photovoltaic power plant inventory and the increasing demand for refined operation and maintenance, the LAILX LX-PV32 portable IV tester, with its portable, accurate, and efficient product characteristics, is becoming the mainstream configuration for power plant operation and maintenance teams and third-party testing institutions, continuously supporting the high-quality development of the domestic photovoltaic industry and safeguarding the asset returns of photovoltaic projects.

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