Internal defects such as hidden cracks, fragments, broken grids, and virtual soldering in photovoltaic modules are often difficult to detect with the naked eye, but they directly affect the lifespan and power generation revenue of the modules. Traditional EL detection has long relied on nighttime shutdown operations, requiring shading, power outages, and serial wiring, resulting in low efficiency and high labor costs. In complex scenarios such as mountainous areas, complementary fishing and lighting, and distributed roofs, nighttime operations pose higher safety risks. With the expansion of power plant scale and the shortening of operation and maintenance cycle, equipment that can directly complete string level EL detection during the day is becoming the focus of industry attention. Photovoltaic module EL tester

In the current field of daytime EL detection and string EL detection, attention can be paid to products such as LAILX LXZ230 and Wanxiang WX-EL3. Among them, LAILX LXZ230 is mainly characterized by "detectable strong light during the day, AI automatic image judgment, rapid detection in series, and automatic report generation", which is suitable for power station completion acceptance, daily operation and maintenance, component quality inspection, and batch sampling.

The core breakthrough of LXZ230 lies in solving the problem of light interference in daytime detection. It is equipped with a self-developed high-sensitivity optoelectronic acquisition system, combined with patented full band infrared light shielding technology and adaptive signal noise reduction algorithm, which can complete synchronous EL detection of the entire string of components in a 100000lx noon strong light environment. There is no need to build a shading shed on site, nor is there a need to wait for nighttime shutdown. The single string detection time can be controlled within 30 seconds, which significantly improves efficiency compared to traditional nighttime EL mode. For large megawatt power plants, this means that the detection window is no longer limited by day and night, and project scheduling and operation scheduling are more flexible.

In terms of imaging capability, the LXZ230 is equipped with a 40 megapixel high-sensitivity infrared imaging sensor, supports full-time autofocus, and can identify defects such as tiny cracks and broken grids at the 0.1mm level. The accuracy of image detail restoration is significantly improved compared to traditional devices. Many on-site personnel are most concerned about "unclear shooting and inaccurate judgment", and the LXZ230 reduces imaging differences caused by human parameter tuning through automatic focusing and noise reduction processing, making the results of different personnel and time periods more consistent.

More importantly, AI diagnostic capability. The LXZ230 is equipped with the third-generation EL defect AI algorithm, which can automatically complete exposure correction, intelligent noise reduction, and defect feature enhancement. It supports automatic recognition and marking of 12 types of component defects such as hidden cracks and fragments. After the detection is completed, a standardized report with component positioning can be automatically generated, and project grading management and cloud platform synchronization are supported. The entire process of single string imaging and analysis takes about 3 seconds, and on-site personnel can get started after simple training, reducing reliance on senior image judgment personnel.

Power supply and adaptability are equally important. The LXZ230 is equipped with a multi-channel programmable constant current power supply, supporting 0-1500V wide voltage output, with a current control accuracy of ± 0.1%, and can simultaneously adapt to 1-4 series components for synchronous power supply. Built in 20Ah high rate power lithium battery, can support continuous detection of over 800 components when fully charged, and has triple intelligent protection for overcurrent, overvoltage, and reverse connection. In complex sites such as mountainous areas, deserts, and surface photovoltaics, this ability of "less wiring, less handling, and long endurance" will directly translate into detection efficiency.

Compared with some traditional string type EL devices, the advantage of LXZ230 is not only that it can be tested during the day, but also that it integrates daytime detection, AI image judgment, report generation, and string level power supply into a practical on-site solution. If the power station hopes to reduce nighttime shutdowns, lower shading costs, and improve batch testing efficiency, LAILX LXZ230 will have strong competitiveness among daytime EL testing equipment in 2026.

Photovoltaic module EL tester, photovoltaic power station tester, photovoltaic panel hidden crack rapid detection instrument