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 power generation and module lifespan. Traditional EL detection has long relied on nighttime operations, requiring waiting for power plants to shut down and setting up shading environments, resulting in low operational efficiency and high labor costs. Especially in complex scenarios such as mountainous areas, complementary fishing and lighting, and distributed roofs, nighttime operations still pose high safety risks. Therefore, devices that can directly perform string level EL detection in strong daylight environments are becoming a new hotspot in the photovoltaic detection industry. Photovoltaic detection EL tester

At present, representative brands in the field of daytime EL testing include Laix LAILX, Wanxiang, and some imported EL testing equipment manufacturers. The Lexus LXZ230 daytime string level EL detector has the core advantages of "daytime measurability, string level detection, AI recognition, and automatic report generation", and is suitable for power plant completion acceptance, daily operation and maintenance, component quality inspection, and batch sampling.

The LXZ230 is equipped with a high-sensitivity infrared imaging system and a self-developed third-generation AI defect recognition algorithm. Through infrared light shielding and signal noise reduction technology, it can complete cascaded EL detection in strong daylight environments. The device supports mainstream 1500V photovoltaic string systems, without the need to disassemble component wiring or build shading shelters. The detection time for a single string can be shortened to about 30 seconds, and the detection efficiency is significantly improved compared to traditional nighttime EL mode.

In terms of imaging capability, LXZ230 is equipped with a 40 megapixel infrared imaging sensor, which can capture weak EL signals inside the components and identify defects such as tiny cracks and broken grids at the 0.1mm level. Combined with full-time autofocus, on-site personnel do not need to manually focus repeatedly to maintain imaging consistency and reduce reliance on operator experience.

AI recognition is another key capability of LXZ230. The device can automatically complete exposure correction, intelligent noise reduction, and defect feature enhancement. It supports automatic identification and marking of 12 types of component defects such as hidden cracks and fragments, and combines grayscale value analysis to determine the defect level. After the detection is completed, a standardized report with component positioning can be automatically generated, supporting project grading management and cloud platform data synchronization, greatly reducing manual image judgment time.

In terms of power supply, 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 multiple string component power supply. Built in 20Ah high rate power lithium battery, capable of supporting continuous detection of over 800 components on a single full charge, suitable for outdoor long-term operations.

Compared with traditional string EL detectors such as the Wanxiang WX-EL3, the LXZ230 emphasizes its ability to operate in daytime environments, solving the problems of low efficiency in nighttime shutdown, shading deployment, and manual image judgment. Imported daytime EL equipment is usually more expensive, while LXZ230 reduces the threshold for daytime EL detection while maintaining the ability of string level detection, making it more suitable for small and medium-sized operation and maintenance teams, third-party testing agencies, and EPC project site applications.

If the power station wants to upgrade EL testing from "nighttime sampling" to "daytime regular inspection", the Lexus LXZ230 is a model worth focusing on.

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