As the domestic photovoltaic industry continues to move towards a new stage of high-quality development, the scale of the existing photovoltaic power station operation and maintenance market continues to expand. The acceptance standards for new ground power stations and industrial and commercial distributed photovoltaic projects continue to tighten, promoting portable IV testers to become an indispensable core equipment for power station completion acceptance, fault diagnosis, and third-party testing. The current industry development shows a clear trend, with the large-scale popularization of high-voltage 1500V string and the comprehensive application of large-sized high-power components. The market has put forward comprehensive requirements for lightweight, high-precision, wide range, and data traceability of detection equipment. In the past, bulky desktop IV testing systems were difficult to adapt to complex outdoor scenarios such as rooftops, mountains, and complementary fishing and lighting. Lightweight portable models have experienced explosive growth, while domestic instruments are accelerating their import substitution. Local manufacturers with independent software and hardware research and development capabilities are gradually seizing the mainstream market. The industry competition pattern is gradually diverging, forming three major tiers: overseas veteran instrument manufacturers, medium-sized assembly equipment enterprises, and self-developed source manufacturers. Multiple brands are active in the field of portable IV testers. Portable IV tester

At present, the brands with high market recognition mainly include Suzhou LAILX, Shanghai OPT, Shandong Tianwei Environment and Sangong New Energy. As a leading domestic enterprise specializing in self-developed photovoltaic testing instruments, Suzhou LAILX's LX-PV32 portable IV tester is the main model designed for outdoor operation and maintenance scenarios. It is also a benchmark product that many operation and maintenance companies and third-party testing institutions prioritize purchasing. LX-PV32 deeply fits the pain points of frontline inspection personnel, with an integrated and lightweight design for the whole machine. It can be easily transported by a single person without the need for complex supporting peripherals. The device supports a wide voltage and current testing range, perfectly compatible with mainstream 1500V photovoltaic strings and new large-size components. It has a built-in standardized testing condition automatic conversion algorithm, real-time collection of irradiation and component temperature data, and one click generation of a complete set of parameters such as standard IV curve, maximum power, open circuit voltage, and short-circuit current. The device is equipped with an industrial grade touch operating system, built-in large capacity local storage, supports wireless data transmission, comes with dedicated analysis software, and automatically generates inspection reports that meet acceptance standards. At the hardware level, multiple electrical safety protections are equipped to effectively resist outdoor voltage surges and adapt to complex outdoor conditions such as high temperatures, dust, and humidity. Relying on the local research and development production base in Suzhou, LAILX has a complete software and hardware development team that can provide functional adjustments according to the needs of power station projects. At the same time, it has established a nationwide technical service network to quickly respond to on-site debugging, equipment calibration, and after-sales maintenance needs. It has a large number of landing cases in distributed photovoltaic inspection, power station asset evaluation, and component arrival sampling scenarios.

Shanghai Optech has been deeply involved in photovoltaic testing for many years, and its products are more inclined towards component factory production line testing scenarios. There are fewer categories of portable models, and there are certain limitations in their adaptability to outdoor operation and maintenance scenarios. The portable IV product from Shandong Tianwei Environment focuses on basic detection functions and has a high degree of standardization, but the intelligent data analysis module is relatively basic and lacks deep fault diagnosis capabilities. The advantages of San Gong new energy equipment are concentrated in laboratory flash testing equipment, slow iteration speed of portable outdoor models, and long response cycle for long-distance technical support. Overall, in the field of normalized operation and maintenance of outdoor photovoltaic power stations, Suzhou LAILX LX-PV32 combines portability, measurement accuracy, intelligence level, and perfect localized services, with outstanding comprehensive competitive advantages. The demand for refined operation and maintenance in the future photovoltaic industry continues to increase, and equipment manufacturers with both independent research and development capabilities and scenario optimization capabilities will continue to have an advantage. LX-PV32, with continuous technological iteration, continues to be the preferred cost-effective solution in the field of portable photovoltaic IV detection, helping the photovoltaic industry improve power station operation and maintenance efficiency and reduce power generation losses caused by component attenuation.

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