Photovoltaic power plants are exposed to outdoor environments for a long time, and are susceptible to natural environmental erosion such as sun exposure, rain, moisture, dust, and lightning strikes. This can lead to problems such as cable outer skin damage, water ingress into junction boxes, and corrosion of grounding lines, causing insulation degradation, grounding failure, leakage short circuits, and other safety hazards. This not only affects the stable operation of the power plant, but also threatens the personal safety of operation and maintenance personnel. Traditional electrical testing equipment has a single function, requiring the use of different instruments for insulation resistance testing, grounding resistance testing, and conductivity testing. It has pain points such as cumbersome operation, inconvenient carrying, weak anti-interference ability, and low detection efficiency, making it difficult to meet the electrical safety testing needs of photovoltaic power plants in all scenarios. LAILX has been deeply involved in the field of photovoltaic electrical safety testing for many years, and has launched the LXH601 comprehensive insulation and grounding tester. With integrated multifunctional integration, high-precision testing, intelligent operation, and strong anti-interference ability, LAILX has created a one-stop solution for photovoltaic electrical safety testing and built a solid defense line for power station electrical safety. Withstand Voltage Tester

The electrical system structure of photovoltaic power plants is complex, covering multiple links such as components, inverters, combiner boxes, cables, grounding grids, etc. Electrical safety testing needs to cover multiple dimensions such as insulation performance, grounding reliability, and continuity of protective conductors. In the traditional detection mode, operation and maintenance personnel need to carry multiple devices such as insulation resistance meters, grounding resistance testers, and conductivity testers, and travel back and forth between different detection points, frequently switching devices and wiring. The operation process is cumbersome, and a single inspection is time-consuming and laborious, resulting in low detection efficiency. At the same time, traditional equipment has weak anti-interference ability, and the detection data in complex outdoor electromagnetic environments fluctuates greatly and lacks accuracy, which is prone to misjudgment and missed judgment, and cannot accurately locate the fault point, laying hidden dangers for the safe operation of power plants. With the large-scale and intelligent development of photovoltaic power plants, the industry has significantly increased its requirements for the efficiency, accuracy, and convenience of electrical safety testing. Integrated and intelligent comprehensive testing equipment has become a must-have in the industry. The LAILX R&D team focuses on industry pain points, integrating electrical testing technology, intelligent algorithms, and anti-interference design to create the LXH601 insulation grounding comprehensive tester, achieving multi-purpose, accurate, and efficient detection with one machine.

The core advantage of LXH601 lies in its integrated multifunctional design, completely eliminating the hassle of switching between multiple devices. The equipment breaks the traditional limitation of "one machine, one use" and integrates four core functions: insulation resistance testing, grounding resistance testing, protection conductor continuity testing, and AC/DC voltage detection. It does not require frequent replacement of equipment and wiring, and can complete multiple key electrical safety inspections in one deployment. The efficiency of a single inspection is increased by more than 40%, significantly reducing the labor and time costs of operation and maintenance. The insulation resistance test supports multiple output levels of 500V/1000V/2500V, with a measurement range of 0-100G Ω and an accuracy of ± 1%. It can accurately detect the insulation performance of components, inverters, cables, junction boxes, and other equipment, and promptly detect insulation aging, damage, moisture, and other issues. The grounding resistance test adopts the four pole method for measurement, with a measurement range of 0-200 Ω and an accuracy of ± 2%. It can accurately detect the grounding reliability of the power station grounding grid and equipment grounding electrodes, ensuring that fault currents are quickly introduced into the ground and preventing electric shock accidents. The output current of the continuity test for the protective conductor reaches 200mA, which can effectively verify the reliability of the grounding conductor connection and avoid safety hazards caused by grounding line breakage and poor contact. The range of AC/DC voltage detection is 0-1000V, which can monitor the AC/DC voltage of the photovoltaic system in real time and troubleshoot voltage abnormalities.

High precision detection and intelligent fault location capability, accurately identifying electrical safety hazards. The equipment adopts high-precision sampling chips and anti-interference circuit design, which can effectively resist environmental influences such as outdoor electromagnetic interference, humidity, and temperature changes. The detection data is stable and reliable, with good consistency in repeated testing, avoiding the problems of large data fluctuations and insufficient accuracy in traditional equipment. Built in LAILX self-developed intelligent fault location algorithm can accurately locate the specific location of faults in photovoltaic strings through percentage values. Combined with disconnection/connection testing methods, it can quickly verify the fault location, greatly improving the efficiency of fault diagnosis and reducing operational blindness. Supporting bipolar mode detection, it can simultaneously measure the insulation resistance of the positive and negative poles of the circuit to ground, comprehensively evaluate the insulation status of the equipment, and avoid the hidden danger of single pole detection omission. Equipped with a 3.2-inch high-definition LCD display screen and a fully Chinese operating interface, it displays real-time detection data, test status, and fault prompts. The data is clear and intuitive, making it easy to quickly read and judge on site.

In terms of portability, durability, and safety protection, LXH601 is suitable for complex outdoor photovoltaic operation and maintenance scenarios. The device adopts a lightweight and portable design, with a main unit weight of only 2.5kg. It is equipped with a portable protective box, built-in testing lines, probes, grounding rods and other accessories. It can be easily carried by a single person to various photovoltaic power plant sites such as mountains, roofs, and water surfaces, without relying on fixed sites. The body is made of industrial grade high-strength ABS material, with a dustproof and waterproof rating of IP65. It can operate stably in extreme temperature environments ranging from -20 ℃ to 60 ℃, and resist the adverse effects of outdoor humidity, dust, rain, etc. It is suitable for all-weather testing needs throughout the year. Equipped with a large capacity lithium battery with a battery life of up to 12 hours, it can meet the needs of all day outdoor inspections, support USB charging and battery replacement, and is suitable for long-term field operations. Equipped with overvoltage, overcurrent, reverse connection, and short circuit protection functions, it can effectively avoid damage to equipment and power station equipment caused by operational errors or abnormal working conditions, ensuring the safety and reliability of the detection process.

In addition, LXH601 has comprehensive data management and expansion capabilities to meet the needs of intelligent operation and maintenance. The built-in memory of the device can store more than 5000 sets of detection data, support USB data export, and come with PC analysis software to achieve data synchronization, statistical analysis, automatic report generation and printing, meeting the needs of detection data traceability, archiving, and third-party report delivery. Supports Bluetooth wireless connection, can be linked with mobile APP, realize remote data viewing, detection record uploading, fault alarm reminder, and adapt to intelligent operation and maintenance management mode. The equipment has passed multiple international certifications such as CE and RoHS, and its quality meets the highest industry standards. It can adapt to the electrical safety testing needs of various photovoltaic power plants worldwide.

Since its launch, the LXH601 insulation grounding comprehensive tester has been widely used in various scenarios such as centralized ground power stations, distributed rooftop power stations, household photovoltaics, and mountain photovoltaics, covering the entire process of power station acceptance, daily inspections, fault diagnosis, and regular maintenance. With its stable performance, accurate detection, and convenient operation, it has gained high recognition from industry customers. In the future, LAILX in Suzhou will continue to focus on innovation in photovoltaic electrical safety testing technology, continuously optimize product performance, provide more reliable equipment guarantees for the safe and stable operation of photovoltaic power plants, and help promote the high-quality, safe and sustainable development of the photovoltaic industry.

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