Photovoltaic power plants operate outdoors for a long time, and their component cables, combiner boxes, and inverters are susceptible to rainwater erosion, sand and dust aging, and temperature deformation, which can easily lead to hidden dangers such as cable insulation damage, corrosion of grounding terminals, and excessive grounding resistance. Leakage and short circuit faults not only reduce power generation, but also threaten the personal safety of operation and maintenance personnel. In the past, the industry required multiple devices such as insulation resistance meters, grounding resistance testers, and conductivity testers to perform separate inspections. Frequent replacement of instruments and repeated disassembly and assembly of wiring resulted in low inspection efficiency. Therefore, Suzhou LAILX has launched the LXH601 comprehensive insulation and grounding tester, which integrates multi-dimensional detection functions of insulation, grounding, conductivity, and voltage. It can complete the full range of photovoltaic electrical safety tests on one machine, revolutionizing the photovoltaic electrical safety detection mode. Withstand Voltage Tester

LXH601 breaks the industry limitations of traditional detection equipment with a single function. It highly integrates six core functions: DC insulation resistance testing, power frequency grounding resistance testing, circuit continuity testing, AC/DC voltage measurement, string Voc/Isc auxiliary detection, and insulation fault fixed-point screening. Operations personnel only need to carry a single instrument when going out for inspections, bidding farewell to the tedious working conditions of multiple instruments being packaged and multiple sets of testing lines being carried haphazardly. The comprehensive efficiency of a single on-site inspection is improved by more than 40%, significantly reducing labor and transportation costs. The insulation test mode covers multiple specifications of test voltages and is suitable for insulation testing of photovoltaic strings, DC cables, and internal circuits of inverters. It has a unique bipolar DUAL detection mode that can measure the insulation resistance of photovoltaic positive and negative poles to ground separately, accurately distinguishing single-sided insulation damage faults; Supporting TMR grounding special testing mode, one click measurement of the grounding resistance of the array grounding grid and equipment shell, strictly benchmarking the national standard acceptance specifications of photovoltaic power plants, and the data can be directly used as the compliance basis for completion acceptance. The equipment is equipped with a self-developed fault location algorithm, which automatically locks the approximate fault section when the insulation value is abnormal, guiding maintenance personnel to accurately search for damaged cables and water permeable junction boxes, avoiding the waste of time in large-scale section by section troubleshooting, and effectively shortening the downtime of power plant faults.

Strict hardware materials are used to ensure measurement accuracy under complex working conditions. The whole machine adopts an anti electromagnetic interference circuit design, and special filtering optimization is carried out for electromagnetic interference generated by photovoltaic power plant inverters and high-power equipment. Data stability is still maintained on the site of the booster station with dense combiner boxes and complex electromagnetic environments, eliminating measurement value jump distortion caused by clutter interference. The body adopts an industrial grade three proof shell, which is dustproof, moisture-proof, and resistant to high and low temperatures. The selection of components in a wide temperature range ensures stable operation in environments ranging from -10 ° C to 50 ° C. It is suitable for various photovoltaic regions in China, such as the cold deserts in the northwest and the high humidity and rainy areas in the south; High definition large-sized digital display screen, eye-catching numerical values, clear reading in outdoor strong light environment, fully Chinese button menu, intuitive functional zoning, even non professional electricians can quickly understand the operation instructions, reducing the threshold for instrument use.

Intelligent data management meets the archiving needs of the industry. The instrument is equipped with a large capacity storage chip, which automatically saves each test time, point, and parameter data. It supports USB export of raw data to a computer and is paired with LAILX management software to generate insulation and grounding detection acceptance reports with just one click. It is suitable for archiving EPC project completion data, archiving annual safety inspections of power plants, and creating quarterly inspection records for operation and maintenance units. In the actual testing and implementation of the project, LXH601 has participated in the safety acceptance of hundreds of centralized and distributed photovoltaics in China, and has been designated as the standard instrument for photovoltaic electrical safety acceptance by third-party testing agencies in multiple power grids.

LAILX relies on a comprehensive after-sales system to provide LXH601 with a 12-month warranty, lifelong calibration technical guidance, and remote/on-site fault assistance services from nearby engineers nationwide. At the same time, it can customize and optimize functions according to the needs of large photovoltaic groups. In the future, LAILX will continue to improve its electrical testing product line, linking IV, EL, and thermal imaging instruments to create a one-stop testing solution for photovoltaic stations, and continuously safeguard the electrical operation safety of photovoltaic power plants with domestically produced comprehensive testing instruments.

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