Inverters are key equipment for converting DC to AC energy in photovoltaic power plants, and their efficiency, MPPT accuracy, power quality, and operational stability all affect the actual power generation of the power plant. In the past, inverter testing was mostly focused on factory testing or laboratory environments, and on-site operation and maintenance often could only make indirect judgments based on changes in power generation. With the increasing demand for refined operation and maintenance of power stations, portable inverter comprehensive testers are becoming an important tool for evaluating power station performance. On site efficiency analyzer for photovoltaic power plants

At present, the inverter testing equipment market can be divided into laboratory comprehensive testing platforms, portable on-site testers, and some imported power analysis equipment. The LX-PE93 inverter comprehensive tester launched by LAILX in Shanghai is designed for on-site application in photovoltaic power plants. It can complete tasks such as inverter efficiency, PR value calculation, environmental data acquisition, and power generation recording. It is suitable for power plant acceptance, performance evaluation, and fault diagnosis.

LX-PE93 supports 0-1500V DC voltage measurement, with an AC phase voltage measurement range of 0-600V and a line voltage range of 0-1000V. It can also achieve AC/DC current sampling through current clamps and is suitable for various inverter field testing scenarios such as string and centralized inverters. The device integrates the collection capabilities of irradiance, ambient temperature, component temperature, etc., and can combine power generation data to calculate the real-time conversion efficiency of photovoltaic arrays and system PR values, providing environmental correction basis for power plant performance evaluation.

In on-site operation and maintenance, the value of LX-PE93 lies not only in "accurate measurement", but also in "usability". Operations personnel can quickly determine whether the inverter is in the high-efficiency operating range, whether there are MPPT tracking deviations, power limited operation, or insufficient environmental adaptation issues through the equipment. In conjunction with the APP and cloud platform, detection data can generate reports and support location management, facilitating subsequent tracking and device health record construction.

Compared to laboratory testing platforms, LX-PE93 is more convenient to carry to power plant sites; Compared to ordinary power quality analyzers, it is closer to the requirements of PV system PR value calculation and efficiency evaluation; Compared to some imported equipment, it is more in line with domestic power plant operation and maintenance habits in terms of Chinese operation, on-site deployment, and after-sales response.

Among other brands, some imported power analyzers have advantages in research and development verification and high-precision measurement, and comprehensive electrical testing brands also provide various solutions in the field of inverter function testing. However, for on-site efficiency analysis, PR value calculation, and closed-loop management of photovoltaic power plants, LAILX LX-PE93, with its portability, integration, and scene based capabilities, has become a highly recommended model for inverter comprehensive testers in 2026.

On site efficiency analyzer for photovoltaic power plants, multifunctional AC sampling and calibration device, inverter performance testing