With the continuous promotion of large-scale construction of domestic photovoltaic power stations, distributed rooftop power stations, mountainous ground power stations, fishery photovoltaic complementary projects, household photovoltaics and other diverse scenarios are synchronously expanding. The performance testing of photovoltaic module generation has become a core requirement for power station acceptance, daily operation and maintenance, fault tracing, and third-party testing. For a long time, traditional IV detection equipment has been plagued by industry pain points such as bulky body, insufficient battery life, cumbersome detection process, poor environmental adaptability, and inability to quickly standardize and correct data, which seriously restrict detection efficiency in field operations with complex terrain and no external power supply. Suzhou Laikesi New Energy (LAILX) has been deeply engaged in the research and development of photovoltaic detection instruments for more than ten years. Relying on independent high-precision sampling algorithms and lightweight industrial structure design, it has newly launched the LX-PV33 portable IV tester, which reshapes the outdoor IV curve detection standard for photovoltaics with four core advantages: portable body, high-speed detection, global high precision, and adaptability to all working conditions. It provides a one-stop component performance diagnosis solution for all types of photovoltaic projects. Current voltage power curve detector

LX-PV33 completes the overall structural reconstruction based on the real work scenarios of outdoor operation and maintenance personnel, completely eliminating the drawbacks of heavy and inconvenient traditional desktop detection equipment. The whole machine adopts a military grade high-strength ABS integrated protective shell, with a dustproof and waterproof protection level of IP54, which can resist outdoor sand and dust, light rain, and high and low temperature environment erosion; The overall weight of the body is controlled at 1.6kg, and it is equipped with a customized portable storage and protective box. It can be carried and carried by a single person for easy transportation, and can easily shuttle through small and complex work areas such as roof color steel tiles, mountain slopes, greenhouse photovoltaics, etc. There is no problem of time-consuming transportation and installation of large equipment. The device is equipped with a large capacity and high rate rechargeable lithium battery, which can continuously complete 280 sets of standard photovoltaic module IV curve complete tests when fully charged. It is paired with a PD fast charging interface and a 12V car power supply dual mode, allowing for long-term field inspections without worrying about power outages or shutdowns, completely freeing itself from the constraints of mains power supply. The human-computer interaction adopts a 7-inch high-definition touch color screen combined with physical button dual control mode, with clear visibility under strong light and simplified operation logic. Zero basic operation and maintenance personnel can independently complete the entire testing process after ten minutes of simple training, greatly reducing the training cost of enterprise personnel.

In terms of core detection performance, LX-PV33 is equipped with LAILX's self-developed high-speed and high-precision ADC synchronous sampling chip. The complete IV/P-V curve scanning of a single component only takes 8 to 12 seconds, which is more than three times more efficient than traditional equipment. The sampling period of large ground power stations is directly shortened by 60%. The equipment voltage test covers the DC range of 20V to 1500V, with a current of 0.3A to 32A. It is compatible with all types of testing requirements from 50W small household components to 30kW high-power photovoltaic string. It can synchronously and accurately collect more than ten core performance parameters such as open circuit voltage Voc, short-circuit current Isc, maximum power Pmax, fill factor FF, conversion efficiency, and series resistance, fully restoring the true state of component power generation performance. In response to the difficulty of horizontal comparison of data caused by changes in outdoor lighting and temperature, the instrument is equipped with an intelligent STC standard condition automatic correction model, an external high-precision irradiation sensor, and a component temperature probe to collect real-time environmental parameters on site. With one click, the measured curve and power data are converted to industry standard testing conditions, solving the industry problem of distorted detection results and inability to determine attenuation in low light environments such as cloudy days, early morning, and evening. At the same time, the equipment is equipped with intelligent curve recognition algorithms, which can automatically identify curve steps, distortions, and voltage drop anomalies, accurately mark power loss causes such as component cracking, obstruction, diode failure, string mismatch, PID attenuation, etc. Operation and maintenance personnel can quickly locate faulty components without professional curve interpretation experience, reducing continuous loss of power generation.

The safety protection system is the core module that LX-PV33 focuses on polishing during the research and development stage, and a dual protection architecture of software and hardware is built to address the risks of photovoltaic high-voltage DC detection operations. At the hardware level, it is equipped with high-voltage isolation protection circuits, anti reverse connection terminals, and real-time hardware cut-off modules for overvoltage, overcurrent, and overtemperature; The software is equipped with a multi-level warning program, which prompts screen pop ups and automatically cuts off output when wiring errors, voltage and current exceeding limits, or high body temperature occur. It prevents electric shock and equipment burnout safety accidents from the source and adapts to the on-site detection operation standards of high-voltage string. The device is equipped with a large capacity storage chip locally, which can store 100000 sets of complete detection curves and parameter data. It supports USB high-speed export and Bluetooth wireless synchronization to tablets and computer terminals. The LAILX exclusive photovoltaic analysis software can automatically generate standardized detection reports, including curve spectra, performance comparison, fault analysis, and data summary content, directly meeting the requirements of power station completion acceptance and third-party testing agency report issuance. The data can be traced throughout the entire process, in line with domestic photovoltaic industry testing standards.

In practical application scenarios, LX-PV33 has been put into practical testing in various fields such as industrial and commercial distributed photovoltaic acceptance, annual operation and maintenance inspection of mountain photovoltaics, troubleshooting of household photovoltaics, outdoor sampling quality inspection of component factories, and photovoltaic research experiments in universities, and has gained high market recognition. The person in charge of the operation and maintenance of the mountain photovoltaic project feedback that in the past, it took most of half a day to carry traditional IV equipment up the mountain to inspect single module areas. However, using LX-PV33, a single person can complete nearly a hundred module inspections in a single day. The equipment is lightweight and easy to carry, and the battery life fully covers all day field operations; The staff of the third-party testing agency stated that the STC automatic correction function of the instrument greatly simplifies the later data processing work, the curve recognition algorithm reduces the probability of manual misjudgment, and the efficiency of issuing reports is significantly improved; The quality inspection team of the component manufacturing enterprise uses this equipment to complete outdoor long-term aging sampling testing. The equipment is stable and anti-interference, and there is no performance degradation after long-term outdoor use.

As a benchmark brand for domestic photovoltaic testing instruments, Suzhou LAILX has always adhered to independent technology research and development. The launch of LX-PV33 portable IV tester fills the gap in the market for lightweight and high-precision outdoor performance testing equipment. In the future, the brand will continue to iterate sampling algorithms and intelligent diagnostic functions, expand data interoperability with the intelligent operation and maintenance platform of photovoltaic power plants, continuously reduce the threshold for the use of photovoltaic detection equipment, and help the high-quality development of the domestic photovoltaic industry with high cost-effectiveness and high stability domestic instruments, providing reliable detection equipment support for the full life cycle operation and maintenance of global photovoltaic power plants.

Current voltage power curve detector, portable solar cell tester, solar cell current voltage power