Photovoltaic power plants operate outdoors for a long time, and cables, junction boxes, combiner boxes, and inverters are subjected to moisture, saltspray, dust, and temperature changes, which can easily lead to hidden dangers such as cable insulation aging and damage, loose grounding connections, etc. Insulation failure can cause leakage and short circuits, and in severe cases, equipment burning and personal safety accidents. Poor grounding can cause lightning protection failure. In the past, multiple separate instruments were often used in the industry to complete insulation and grounding tests separately. The equipment was numerous, the wiring was cumbersome, the ability to resist environmental interference was weak, and the testing process was complex, which was not conducive to on-site batch inspections. Suzhou Laikesi LAILX has launched the LXH601 Insulation and Grounding Comprehensive Tester, which integrates multiple functions such as insulation resistance testing, grounding continuity testing, and insulation fault location into one device. It is compatible with 1500V high-voltage photovoltaic systems and provides an integrated electrical safety testing tool for power plant construction acceptance, annual safety inspection, and fault troubleshooting, safeguarding the bottom line of electrical safety in photovoltaic systems. Multi functional comprehensive electrical appliance

LXH601 is compatible with current mainstream 1000V and 1500V DC photovoltaic systems. The insulation test voltage range covers 500V-1500V, and the insulation resistance measurement range is 0.01 Ω to 2000M Ω, with a measurement accuracy of ± 2%. The equipment is equipped with digital filtering algorithms, which can suppress measurement disturbances caused by outdoor electromagnetic interference and high humidity environments, accurately capturing insulation performance degradation problems such as insulation layer moisture, cable outer skin damage, and junction box water ingress. The instrument supports automatic calculation of two key indicators, polarization index PI and dielectric absorption ratio DAR. By analyzing the electrical characteristics of insulation materials over time, the aging degree of the insulation system can be evaluated, potential faults can be warned in advance, and hidden dangers can be identified before they occur. The equipment comes with GFL insulation fault location technology, which can further locate the fault point after discovering insulation abnormalities, helping operation and maintenance personnel quickly find the source of faults such as cable damage and water ingress in junction boxes, shortening the troubleshooting time, and reducing power plant shutdown losses. At the same time, complete coverage of grounding resistance and grounding continuity testing is conducted to verify the reliability of the grounding of the bracket and equipment casing, confirm the working status of the lightning protection grounding system, and complete multiple safety projects with one set of equipment without carrying multiple instruments to and from the site, reducing the equipment load on operation and maintenance personnel.

The whole machine fully considers the requirements of outdoor complex working conditions, with an IP65 dustproof and waterproof protection level, and a working temperature of -10 ℃ to 60 ℃. It can stably carry out testing work in rainy, humid, coastal salt spray, and windy and sandy mountainous power stations. The body adopts a compact and lightweight design, paired with a portable protective bag, which can be carried and moved by a single person. It can flexibly operate distributed photovoltaics on narrow roofs and large ground power stations in deserts. 4.3-inch color LCD display screen, Chinese operation interface, clear reading under strong light, physical buttons can also be operated with gloves, automatic high-voltage self check upon startup, identification of wiring reverse errors, millisecond level cutting off of high-voltage output in case of overvoltage and leakage risks, synchronous sound and light alarm, multiple safety protections to ensure the safety of on-site operators. Built in large capacity lithium battery, Type-C fast charging, fully charged supports uninterrupted batch testing all day long, and can continue to work even without mains power. It supports preset 50 sets of photovoltaic dedicated testing programs, with one click calling of the testing process. The test completion screen directly displays the measurement values and PASS/FAIL qualified/unqualified judgments, without the need for manual calculation and comparison results by staff, reducing the operating threshold. Ordinary operation and maintenance personnel can easily learn to use Lex after simple training.

The data management capability is adapted to the requirements of intelligent operation and maintenance archives. LXH601 can store tens of thousands of complete detection records locally, and each record synchronously saves the field number, string number, time, and operator information, with complete traceability information. Supports USB data export, paired with PC analysis software, batch automatic generation of standardized electrical safety testing reports, summarizing insulation failure points and grounding hazard lists. The report format meets the requirements of energy project acceptance and archiving, and can be directly used for grid connection acceptance, annual safety ledger, and third-party testing data output. Testing personnel can compare the test data of the same string in different cycles, analyze the trend of insulation performance changes, evaluate the aging speed of equipment, and guide the development of operation and maintenance plans.

The LXH601 insulation grounding comprehensive tester has a wide range of application scenarios, including centralized large-scale ground photovoltaics, industrial and commercial distributed rooftop photovoltaics, household photovoltaics, and energy storage converter systems. It covers the grid connection safety acceptance during the construction stage of power plants, annual safety inspections of existing power plants, fault tracing and positioning after faults occur, and evaluation of old power plant renovation. In the past, high-voltage photovoltaic safety testing equipment relied heavily on imports, resulting in high procurement costs. LAILX LXH601 has achieved domestic high-performance substitution, ensuring measurement accuracy, protection level, and safety performance while having higher cost-effectiveness. Photovoltaic safety is the foundation of power station operation, and insulation and grounding performance directly affect equipment and personal safety. The Suzhou LAILX LXH601 insulation and grounding comprehensive tester simplifies the on-site safety inspection process with an integrated solution, helps operation and maintenance units implement regular safety inspections, avoid electrical accidents, and ensure the long-term stable and safe operation of photovoltaic power stations.

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