In the refined management system of photovoltaic power plants, inverters are key equipment for energy conversion, and their performance status directly affects the power generation efficiency of the entire system. However, due to multiple factors such as component aging and environmental changes, the actual operating efficiency of inverters often deviates from the ideal laboratory values. In order to accurately evaluate the actual working conditions of inverters on site, Shanghai LAILX has launched the LX-PE93 inverter efficiency tester, providing reliable technical support for the optimized operation and fault diagnosis of power plants. Inverter comprehensive tester

The LX-PE93 adopts an advanced testing architecture and uses current clamps for non-contact current sampling. It can synchronously collect and real-time record and analyze the complete data of the inverter's DC input and AC output terminals under normal working conditions of the power station. The device supports measurement of 0~1500V DC voltage and 0~600V AC phase voltage, with a testing accuracy of up to ± 0.5%. The whole machine is equipped with high-precision irradiance meters and temperature sensors, with irradiance measurement accuracy better than ± 3% and temperature testing accuracy reaching ± 1 ℃. Through intelligent calculation of cumulative power generation and cumulative irradiance, LX-PE93 can obtain real-time conversion efficiency of photovoltaic arrays and automatically generate PR values, with measurement accuracy better than ± 1%.

In actual power station operation and maintenance, LX-PE93 has demonstrated significant application value. The operation and maintenance team can regularly conduct performance tests on inverters in various areas of the power station and establish a comprehensive equipment health record. When an inverter is found to have abnormal efficiency, detailed test data analysis can be used to identify the root cause of the problem and accurately determine whether the performance degradation is caused by power device aging, MPPT tracking algorithm deviation, or other factors.

In terms of hardware design and data management, LX-PE93 also performs well. The device weighs 5.8kg, is equipped with a 6.5-inch LED display screen, and has a built-in 14.8V lithium battery that can support 8 hours of continuous operation. It has networking communication function, supports remote Ethernet monitoring and data synchronization processing, and can also be fixed on-site for long-term monitoring. The accompanying professional APP and software can achieve automatic generation of detection data reports, location preview, and one click export. With the continuous development of photovoltaic technology, LX-PE93, with its modular design and open communication protocol, provides expansion possibilities for the testing of new inverter technologies, and is continuously driving the entire industry towards the goal of greater efficiency and intelligence.

Inverter comprehensive tester