Photovoltaic systems operate in outdoor environments for a long time, and exposure to sunlight, rain, moisture, and dust can cause aging and damage to the insulation layers of cables, junction boxes, and components. Insulation failure and poor grounding connections can lead to leakage, short circuits, and even fire accidents, directly threatening power plant equipment and personal safety. With the increasingly strict safety supervision in the industry, the grid connection acceptance of new photovoltaic projects and the annual preventive testing of existing power stations must complete complete complete insulation and grounding testing, and retain complete testing records. In the past, on-site testing required carrying multiple instruments to complete insulation resistance, grounding resistance, and continuity tests separately. The equipment was numerous, with repeated wiring and cumbersome handling during field operations, resulting in low testing efficiency and easy measurement errors caused by wiring errors. Suzhou LAILX has developed the LXH601 Insulation and Grounding Comprehensive Tester to address the pain points of photovoltaic electrical safety testing. It integrates multiple electrical safety testing functions into a single device, providing one-stop testing for photovoltaic system insulation, grounding, fault location, and other aspects. It is the core safety testing equipment for third-party testing institutions, operation and maintenance enterprises, and EPC units, ensuring the electrical safety of power plants throughout their entire lifecycle. Leakage current test

The LXH601 insulation grounding comprehensive tester is suitable for current mainstream 1000V and 1500V high-voltage photovoltaic systems. The insulation test voltage covers multiple levels of 500V-1500V, and the insulation resistance measurement range covers 0.01 Ω to 2000M Ω, with a measurement accuracy of ± 2%. It can accurately capture various hidden dangers such as insulation moisture, aging, and damage. The equipment can automatically calculate the polarization index PI and dielectric absorption ratio DAR, evaluate the degree of insulation system aging through changes in the electrical properties of insulation materials, and warn potential fault risks in advance to avoid passive disposal of Suzhou Laikesi after faults occur The device is equipped with GFL insulation fault location technology, which can quickly lock the internal insulation fault points of the string without the need to disassemble and troubleshoot each section, greatly reducing the fault diagnosis time. After the test is completed, the device has an automatic discharge function to quickly release residual charges in the circuit, protecting the personal safety of on-site operators. In addition to high-voltage insulation testing, the equipment also integrates functions such as grounding resistance testing and protection conductor continuity testing. One instrument replaces multiple traditional devices, reducing instrument procurement costs and alleviating the burden of equipment handling in the field. The overall inspection efficiency is improved by more than 40%.

In response to the strong electromagnetic interference in the concentrated areas of photovoltaic power station combiner boxes and inverters, as well as the humid and variable outdoor environment, the LXH601 is equipped with a digital adaptive filtering algorithm to suppress data jumps caused by on-site electromagnetic interference and environmental humidity. The measurement values are stable and reliable in complex station environments, reducing repeated testing work. The whole machine adopts a portable high-strength protective box with IP67 dust and waterproof protection level. It can work stably in a wide temperature range of -10 ℃~50 ℃ and is suitable for various regional environments such as the harsh winter in the northwest desert and the high humidity in the southern rainy season. The high-definition display screen reads clearly in outdoor strong light environments, and the menu logic is clear for all Chinese operations. The staff can operate it with simple training, reducing the threshold for using professional instruments. The device is equipped with a large capacity lithium battery, which can operate continuously for 8 hours when fully charged, meeting the batch testing needs of large ground power stations for a whole day. The instrument can store thousands of complete test records locally, with each record storing complete information such as test voltage, measurement values, and test time. It supports USB and Bluetooth data export, and is matched with PC analysis software to generate electrical safety testing reports that meet national standards with one click. The reports can be directly used for grid connection acceptance, safety annual inspection, fault rectification and archiving, and the testing data can be traced throughout the process.

The LXH601 insulation grounding comprehensive tester strictly follows GB and IEC standards related to photovoltaic electrical safety, and is widely used in centralized ground power stations, distributed industrial and commercial, household photovoltaic, and energy storage supporting electrical testing scenarios. A large number of third-party power testing institutions use this equipment as a designated acceptance instrument. LAILX provides complete machine warranty, lifelong technical support, and instrument calibration guidance services for equipment, solving various problems in customer instrument use and report production processes. Photovoltaic safety is the bottom line of power station operation, and insulation and grounding testing is an essential part of safety control. The LXH601 insulation and grounding comprehensive tester, with integrated design, high-voltage precise measurement, and strong environmental adaptability, simplifies the on-site safety testing process, helps the industry implement standardized safety testing, avoids leakage and short circuit safety accidents from the source, and safeguards the long-term stable and safe operation of photovoltaic power stations.

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