Photovoltaic high-voltage string, inverter, combiner box, and energy storage equipment are exposed to outdoor humidity, lightning strikes, high and low temperature environments for a long time, which can easily lead to electrical safety hazards such as cable insulation aging, grounding circuit virtual connection, and shell grounding failure. Insulation damage can cause leakage and electric shock risks, and poor grounding cannot effectively discharge lightning surges, penetrate components, and burn electrical equipment, seriously threatening the personal safety of operation and maintenance personnel and the safety of power plant assets. According to the IEC61730 photovoltaic module safety standard and lightning protection testing specifications, insulation resistance, grounding continuity, and withstand voltage safety tests must be completed for the completion and annual operation and maintenance of photovoltaic power plants. Traditional testing requires two devices, insulation shake meters and grounding resistance testers, which are cumbersome to carry and have low efficiency in segmented testing. Data cannot be uniformly archived. Suzhou LAILX has launched the LXH601 comprehensive insulation and grounding tester, which integrates three major detection functions: insulation resistance, grounding resistance, and AC/DC withstand voltage. It can complete electrical safety testing for all types of photovoltaics in one machine, taking into account portability, high precision, and intelligence. It has become a standard safety testing equipment for photovoltaic engineering, third-party testing, and operation and maintenance enterprises. DC withstand voltage, insulation impedance, grounding resistance, leakage current

LXH601 is precisely adapted to the detection requirements of 1500V high-voltage photovoltaic systems. The insulation resistance test range covers three output levels of 500V/1000V/1500V, perfectly matching the testing standards of different voltage levels of components, strings, and inverters. It can measure up to 100G Ω ultra large insulation resistance and accurately identify insulation defects such as cable breakage, insulation layer aging, and junction box water ingress and moisture. The grounding resistance test adopts a four wire precision measurement technology to eliminate the interference of the test lead's own resistance. The measurement range is 0m Ω to 2000m Ω, and the minimum resolution is 0.1m Ω. It can accurately detect the grounding status of the bracket, the grounding of the combiner box shell, and the connection status of the lightning protection grounding strip, effectively identifying hidden dangers such as grounding virtual welding, rusting and breaking, and grounding electrode failure; Built in AC/DC withstand voltage testing module, continuously adjustable voltage, supports real-time arc detection. In the detection process, if insulation breakdown or leakage arc occurs, it will immediately sound and light an alarm, synchronously terminate the test, and avoid high voltage damage to the tested photovoltaic equipment.

The equipment fully considers the needs of outdoor mobile detection, with an integrated design that does not require module splitting. The entire set of equipment is stored in a portable shock-absorbing box, with a weight of 4.2kg, and can be carried back and forth to various photovoltaic work sites by a single person; Protection level IP63, dust-proof and moisture-proof. No additional protection is required for outdoor testing during rainy season. Equipped with a large capacity lithium battery, it can continuously complete 300 complete safety inspections when fully charged. There are no restrictions on working in remote areas without mains power. High definition color touch screen operation interface, fully Chinese visual menu, pre-set photovoltaic industry specific testing program, operators do not need complex parameter settings, one click start component insulation, array grounding, inverter voltage withstand standardized testing process, equipment automatically determines qualified/unqualified threshold, real-time sound and light reminders for exceeding the standard, reducing the probability of manual operation errors. Zero basic operation and maintenance personnel can operate independently with simple training.

The intelligent data management function solves the problem of archiving industry inspection records. LXH601 can store 5000 complete sets of inspection data locally, including complete information such as insulation resistance, grounding resistance, withstand voltage duration, breakdown voltage, and testing time. It supports local export from USB flash drives and wireless synchronization to computer terminals via WIFI. Equipped with LAILX safety inspection management software, it can automatically generate standardized photovoltaic safety inspection reports, distinguishing three types of report templates: component incoming inspection, power station completion inspection, and annual lightning protection operation and maintenance inspection. The reports are stamped with equipment data traceability identification and have the credibility of third-party testing institutions, meeting the requirements of the Energy Bureau, Lightning Protection Center, and project party A for acceptance data. At the same time, the device supports online program upgrades, and the subsequent addition of energy storage and charging pile detection standard programs can be remotely updated to extend the device's service life.

Widely applied to verify the comprehensive performance of equipment, multiple third-party lightning protection testing institutions in China have purchased LXH601 in bulk for annual lightning protection inspections of photovoltaic power plants. One device replaces traditional multiple separate instruments, reducing on-site testing time by half and significantly improving the consistency of testing data; Distributed photovoltaic engineering companies have included equipment as standard for completion acceptance, quickly completing insulation and grounding inspections on roofs and household photovoltaic project sites, and passing the grid connection acceptance of the power supply company in one go, greatly shortening the project delivery cycle; The operation and maintenance team of the energy storage power station uses equipment to regularly inspect the insulation and grounding circuits of the energy storage cabinet, identify potential safety hazards of leakage in advance, and ensure the long-term stable operation of the energy storage system. In addition to photovoltaic scenarios, the equipment is also suitable for safety testing of wind power, charging piles, and low-voltage distribution equipment, expanding the comprehensive use value of the equipment.

Suzhou LAILX has been deeply involved in the field of photovoltaic electrical safety testing for many years. The LXH601 core high-voltage output module and precision sampling circuit are independently developed and produced. The core components are selected from industrial grade imported accessories, and the whole machine is stable and durable. It provides a three-year warranty, lifetime free calibration, and nationwide on-site technical training services. Relying on the research and development strength of a complete set of photovoltaic testing equipment, LAILX continues to create a complete set of solutions for IV, EL, thermal imaging, meteorological stations, and insulation grounding comprehensive testing, covering the entire process of photovoltaic power station testing needs from early resource assessment, arrival quality inspection, completion acceptance to daily operation and maintenance. With integrated precision testing equipment, LAILX enhances the electrical safety control level of the photovoltaic industry and provides solid technical support for the safe, compliant, and long-term operation of the clean energy industry.

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