The photovoltaic system belongs to the high-voltage direct current electrical system, which is subjected to long-term outdoor exposure to sunlight, rain, dust, and moisture erosion. It is prone to cable insulation layer damage, junction box water leakage, grounding device corrosion failure, string to ground leakage and other faults. In mild cases, the inverter frequently shuts down for protection, resulting in a significant decrease in power generation. In severe cases, it can cause major safety accidents such as electric shock to operation and maintenance personnel, equipment short circuit burning, and lightning breakdown. Traditional electrical safety testing requires the cooperation of multiple devices such as insulation resistance testers, grounding resistance testers, voltage and current meters, and open circuit and short circuit testers. Frequent replacement of instruments and repeated disassembly and assembly of wiring make the inspection process cumbersome, inefficient, and unable to accurately locate insulation fault points. Suzhou Laikesi LAILX directly addresses the pain points in the photovoltaic electrical testing industry. We have independently developed the LXH601 insulation and grounding comprehensive tester, which integrates more than ten electrical safety testing functions into a single device, achieving integrated testing of insulation, grounding, voltage and current, and fault location. It is suitable for comprehensive safety verification of photovoltaic modules, strings, inverters, combiner boxes, and grounding systems, and has become an essential comprehensive safety testing equipment for photovoltaic power plant operation and completion acceptance. Multi functional comprehensive electrical appliance

The biggest core advantage of LXH601 lies in its highly integrated multifunctionality, breaking the traditional limitation of "one machine, one function" in testing. One device fully covers the electrical safety testing needs of photovoltaic systems, integrating insulation resistance testing, grounding continuity testing, grounding resistance testing, DC/AC voltage measurement, open circuit voltage Voc, short-circuit current Isc, polarity determination, accurate insulation fault location, dielectric absorption ratio DAR, and bipolar to ground synchronous detection DUAL mode. The complete set of safety testing that used to require carrying four or five instruments can now be achieved by just one LXH601 device, greatly reducing the burden of equipment inspection for operation and maintenance personnel, reducing instrument procurement and maintenance costs, and improving the overall work efficiency of single power station inspection by 40%. Above. The insulation testing voltage of the equipment supports intelligent adjustment in multiple levels of 500V, 1000V, and 2500V, perfectly matching photovoltaic low-voltage components, 1000V traditional string, and 1500V high-voltage string with different insulation testing national standards; The measurement range of insulation resistance covers 0.01 Ω to 2000M Ω, and the measurement accuracy reaches the high-end level of the industry. It can accurately capture slight insulation aging and micro leakage hazards, and warn of insulation failure risks in advance.

The bipolar DUAL detection mode and GFL insulation fault location technology optimized for exclusive detection of photovoltaic DC systems are the core highlights that distinguish LXH601 from general-purpose insulation testers. Bipolar synchronous detection can simultaneously measure the insulation resistance values of the positive pole to ground and negative pole to ground of the photovoltaic string. A single wiring can complete double-sided insulation verification without the need to switch wiring and repeat testing, greatly simplifying the operation process of the DC photovoltaic system; The unique GFL fault location function can accurately lock the fault string and component location corresponding to insulation damage, water leakage and leakage, without the need for operation and maintenance personnel to power off each component for troubleshooting. It can quickly locate the fault point for maintenance and replacement, greatly reducing the downtime of power station maintenance and minimizing power generation losses. The grounding detection module supports continuous conductivity testing and dual-mode measurement of grounding resistance, which can verify whether the grounding of component metal frames, photovoltaic brackets, inverter enclosures, and distribution cabinets is continuous and reliable. It accurately detects the hidden dangers of grounding resistance exceeding the standard caused by grounding electrode corrosion and grounding flat iron virtual connection, and improves the lightning protection and electric shock prevention safety protection system. The polarity testing function of the equipment can quickly determine whether the positive and negative connections of the string are reversed, avoiding wiring errors during the construction phase and burning out the core components of the inverter. It is suitable for the final wiring verification of newly built power stations.

The whole machine adopts an industrial grade portable integrated body design, with a compact body matched with a high-strength protective storage box. It can be carried by a single person to work in mountains, rooftops, and remote outdoor power stations. The equipment's working temperature covers -20 ℃ to 50 ℃, and the dustproof and waterproof shell resists outdoor dust and rainwater invasion, adapting to various harsh outdoor working environments. Equipped with high-definition digital display screen, large font numerical display, clear and readable outdoors under strong light, simple and intuitive physical button operation, built-in operation guide interface, zero basic operation and maintenance personnel can proficiently master all detection processes in a short period of time. The device is equipped with large capacity local storage, which can store thousands of complete test data for insulation, grounding, voltage and current. Each data automatically records the test time, voltage level, and detection point number, and supports USB one click export of all detection records; Equipped with professional safety analysis software on the PC end, it can batch organize the testing data of the entire station, automatically generate standardized electrical safety testing reports, compile a list of insulation failure points and grounding hazards, and provide complete compliance written materials for power station rectification and third-party acceptance. Multiple hardware security protection mechanisms ensure the safety of high-voltage testing for operators. The equipment is equipped with built-in overvoltage, overcurrent, and discharge protection modules, which automatically release residual high voltage in the circuit after testing, eliminating the risk of electric shock caused by residual electricity. The high-voltage testing circuit is designed with electrical isolation to avoid safety accidents at the hardware level.

LXH601 is suitable for electrical safety testing scenarios throughout the entire lifecycle of the photovoltaic industry, with a wide range of applications. During the completion and acceptance stage of the new photovoltaic power station, a third-party testing agency uses equipment to complete a complete set of safety inspections for the insulation of the entire array string, the grounding system of the entire station, and the AC/DC circuit of the inverter, and issues a compliance acceptance inspection report; During the quality inspection process of components and string arrival, the insulation performance and wiring polarity of the components are quickly tested to ensure compliance, and defective insulation damage products are screened out from the factory; Regular operation and maintenance inspections of existing power stations, regularly detecting insulation aging and potential corrosion hazards of grounding devices, and addressing leakage and grounding failure faults in advance; Special troubleshooting after rainstorm, snowstorm and typhoon disasters to quickly verify the insulation failure caused by rain soaking and external force damage; At the same time, it is suitable for safety testing of energy storage power stations, industrial and commercial distribution rooms, and wind power supporting electrical systems, expanding the scope of application of multi-purpose equipment.

Suzhou LAILX provides full chain original factory supporting services for LXH601. The host, test cables, detection probes, and analysis software are all independently developed and produced, and there are no compatibility issues with third-party accessories; We will establish localized after-sales service outlets nationwide, provide on-site practical training, annual instrument precision calibration, lifelong firmware free upgrade services, and continuously optimize the fault location algorithm of photovoltaic DC systems. The electrical safety of photovoltaic systems is the bottom line for stable operation of power plants. LXH601 simplifies the photovoltaic safety inspection process with four core advantages: integrated integration, high-precision measurement, precise fault location, and portability and easy operation. It comprehensively eliminates safety hazards such as leakage, electric shock, short circuit, and lightning strike, and builds a stable electrical safety protection barrier for various types of photovoltaic power plants in China, helping to promote the standardized development of the photovoltaic industry.

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