Photovoltaic power plants are exposed to outdoor environments for a long time, which can easily cause damage to cable sheaths, water leakage from junction boxes, grounding failure of brackets, and degradation of component insulation performance due to erosion from rainwater, sandstorms, salt spray, and alternating high and low temperatures. This can lead to major safety accidents such as leakage, short circuits, electric shocks, and equipment burns. Traditional electrical safety testing requires multiple devices including insulation resistance tester, grounding resistance tester, multimeter, and polarity tester to work together. Operations personnel need to carry multiple sets of instruments when going out for inspections, frequently changing wiring and repeatedly disassembling and assembling. The process is cumbersome, the testing efficiency is low, and the data of multiple devices cannot be uniformly archived, making it difficult to locate fault points. Suzhou Laikesi New Energy Technology Co., Ltd. (LAILX) addresses the pain points in the photovoltaic electrical safety testing industry by independently developing the LXH601 insulation and grounding comprehensive tester. It integrates more than ten electrical safety testing functions into a single machine body, achieving one-stop comprehensive safety verification of components, strings, combiner boxes, inverters, and grounding systems. It is an essential comprehensive safety testing equipment for the completion acceptance and annual safety inspection of photovoltaic power plants. DC withstand voltage, insulation impedance, grounding resistance, leakage current

The biggest core innovation of LXH601 lies in its highly integrated multifunctionality, completely breaking the limitations of the traditional "one machine, one function" detection industry. A single device fully covers all electrical safety detection needs of photovoltaic systems, integrating insulation resistance testing, grounding continuity testing, four wire grounding resistance testing, AC/DC voltage measurement, open circuit voltage Voc, short-circuit current Isc detection, circuit polarity determination, accurate insulation fault location, dielectric absorption ratio DAR, and bipolar to ground synchronous DUAL detection with ten core functions. In the past, to complete a complete set of safety regulations testing for a photovoltaic system, operation and maintenance personnel needed to carry four to five independent instruments, which required a lot of time for dismantling and wiring back and forth. Now, all testing projects can be completed with only one LXH601 device, reducing the load of equipment for outdoor inspections by 60%, improving the overall testing efficiency of a single power station by more than 40%, and significantly reducing the comprehensive cost of enterprise instrument procurement, storage, regular calibration and maintenance.
The insulation test voltage of the equipment supports multiple adjustable levels of 500V, 1000V, and 1500V, fully matching the mainstream voltage level standards of domestic 1000V and 1500V photovoltaic systems. The highest insulation measurement range can reach 200M Ω, accurately capturing the problem of insulation resistance reduction caused by aging and damage of the insulation layer of the circuit and components, and strictly complying with the GB/T 50796 Electrical Acceptance Specification for Photovoltaic Power Stations. The original dual pole synchronous detection DUAL mode can simultaneously measure the insulation resistance of the positive and negative poles of the photovoltaic DC side to ground, synchronously compare the insulation status of the two poles, and quickly identify the hidden danger of insulation damage on one side; Equipped with insulation fault location function, it accurately locks the specific points of cable damage, junction box water ingress, and component frame leakage through segmented testing, without the need to disassemble the circuit section by section for troubleshooting, greatly reducing the downtime for fault maintenance and minimizing the loss of power generation in the power station. The grounding detection adopts four wire high-precision measurement technology to eliminate the interference of test line resistance. The grounding resistance measurement accuracy reaches 0.01 Ω, which can accurately verify the grounding continuity of photovoltaic brackets, inverter shells, and combiner box metal shells, ensuring rapid current discharge in case of equipment failure and eliminating the risk of electric shock to personnel.

The whole machine adopts industrial grade portable protection design, with high-definition large screen digital display on the body, clear and intuitive numerical values, simple layout of physical function buttons, and barrier free operation when wearing gloves outdoors; The body is equipped with a large capacity rechargeable lithium battery, which can continuously complete outdoor inspections throughout the day without mains power. It also supports continuous operation with an external DC power supply, suitable for both factory and outdoor scenarios. The device is equipped with a large capacity local storage, which can store thousands of sets of insulation, grounding, and voltage detection data per unit. Each set of data automatically records the test voltage, measurement value, test time, and device number. It supports USB data export and is matched with PC safety inspection management software. It can export data in batches with one click and generate standardized safety inspection reports. The report format meets the archiving requirements of power grid companies and third-party acceptance agencies, achieving traceability of the entire detection data process. The whole machine is equipped with multiple hardware safety protection circuits, which automatically cut off output for overvoltage, overcurrent, reverse connection, and leakage. The high-voltage testing process monitors the insulation status in real time to ensure the personal safety of operators. The body is IP53 dustproof and waterproof, resistant to drops and impacts, and suitable for various complex outdoor working environments such as mountains, coasts, and deserts.

LXH601 is suitable for safety testing scenarios throughout the entire lifecycle of the photovoltaic industry: during the grid connection acceptance stage of newly built power stations, complete a complete set of insulation, grounding, and polarity verification for the entire array to ensure compliance with construction wiring and no safety hazards; Annual safety inspection of existing power stations, regular detection of insulation attenuation and grounding corrosion failure issues, and early elimination of the risk of electric leakage fire; During the troubleshooting phase of the faulty power station, quickly locate the points of cable damage, water ingress into the junction box, and ground breaking faults; Energy storage supporting photovoltaic systems, industrial and commercial distributed photovoltaics, and household small photovoltaic power stations can all be used universally, and are also compatible with wind power and small power equipment safety testing, with a wide range of application scenarios. In the operation and maintenance testing of a large ground power station, the use of LXH601 to complete a complete set of safety regulations for a one megawatt array reduced the time consumption by nearly half compared to the traditional multi device combination mode, improved the efficiency of fault location by 70%, and significantly reduced the labor and time costs of operation and maintenance.

Suzhou LAILX relies on a complete R&D and after-sales system. LXH601 comes with a standard measurement calibration certificate, a one-year warranty for the entire equipment, and a two-year warranty for the testing core module. Dedicated technical engineers are equipped in key photovoltaic areas across the country to provide on-site equipment calibration, operation training, and troubleshooting services. The supporting management software is upgraded for free for life and continuously adapts to the latest national standards for photovoltaic electrical testing. At present, many domestic photovoltaic safety accidents are caused by the failure to timely investigate insulation and grounding hazards. Integrated comprehensive safety testing equipment has become a necessity in the industry. LXH601, with its advantages of integration, high precision, and portability, fills the gap in the domestic high-end photovoltaic comprehensive safety testing instrument market and breaks free from the constraints of high procurement and after-sales costs of imported comprehensive testing instruments.

The electrical safety of photovoltaic systems is the bottom line for stable operation of power plants, and normalized and standardized insulation and grounding testing is essential. The Suzhou LAILX LXH601 Insulation Grounding Comprehensive Tester innovatively reconstructs the photovoltaic safety inspection process through integrated integration, taking into account multiple advantages such as inspection accuracy, operational efficiency, and usage cost, and building a complete safety inspection barrier for photovoltaic power plants nationwide. In the future, Lexus will continue to expand the functional modules of comprehensive testers, integrate power quality and leakage current detection functions, and create a one-stop photovoltaic electrical comprehensive testing platform, safeguarding the safe and stable development of the clean energy industry with domestically produced independent testing equipment.

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