Inverters are known as the "heart" of photovoltaic power plants, undertaking the key mission of converting DC electricity into AC electricity for grid connection. The health of the heart directly determines the power generation revenue of the power station. But unfortunately, the physical examination of this "heart" used to be a difficult problem with both ends: traditional testing methods mostly require equipment to shut down and power off. Once the power is cut off, the power will stop and the power generation will be lost. For large power plants that are currently connected to the grid, every "physical examination" is a visible loss; If comprehensive testing is skipped, the key performance of the inverter, such as conversion efficiency, power factor, harmonics, etc., cannot be evaluated, and hidden dangers can only rely on gambling. Inverter detector

A more realistic problem is that traditional testing equipment has a single function - measuring voltage cannot measure efficiency, and measuring efficiency cannot show the overall performance of the system. A complete evaluation often requires piecing together multiple devices and multiple operations, and the data caliber is not uniform. In the face of high-frequency and essential scenarios such as EPC engineering acceptance, third-party testing, and power station operation and maintenance, what the industry urgently needs is a device that can complete inverter physical examination "without stopping the machine, in one go, and comprehensively".

The LX-PE93 inverter comprehensive tester launched by Shanghai LAILX provides the answer of "online uninterrupted detection". Its core innovation lies in the use of non-contact current clamp sampling technology - data acquisition can be completed directly in the grid connected state of the inverter without disconnecting the line or changing the operating state. This means that the power station does not need to shut down or cut off power, generating a considerable amount of electricity while the testing work continues as usual, minimizing the cost and risk of the "physical examination".

In terms of functionality, LX-PE93 has truly achieved a "one-stop" solution. It can synchronously and completely collect key parameters on both sides of AC and DC, and calculate core indicators such as inverter conversion efficiency and system PR (performance ratio) based on these parameters, providing a professional and integrated testing solution for inverter performance evaluation, power plant energy efficiency calculation, and fault diagnosis. The complete portrait that used to require multiple devices and multiple operations to assemble can now be clearly outlined with just one device and online inspection.

Around the goal of "health monitoring", the application of LX-PE93 runs through the entire lifecycle of inverters: during the grid connection acceptance of power plants, it is the "judge" to measure whether the equipment meets the standards and whether the system is qualified; During daily operation, it serves as a "health check-up doctor" for regular performance evaluations and capturing signs of efficiency decline; After a fault occurs, it serves as a "diagnostician" to locate the problem link, distinguish between component issues and inverter issues. Whether it is EPC project acceptance, third-party testing agencies, or power station operation and maintenance enterprises, they can all obtain a non-stop, loss free, and traceable testing conclusion from it.

When the "physical examination" is no longer at the cost of sacrificing power generation, the evaluation of inverter efficiency can be truly implemented. The LX-PE93 uses a non-contact "current clamp" to hold onto both the data and the electricity that the power station is supposed to produce - this is the kind of care that professional testing should have.

Inverter tester, inverter performance testing, multifunctional AC sampling and verification device