As a high-voltage electrical system, photovoltaic power plants are exposed to complex outdoor environments such as sun exposure, rain, humidity, and sandstorms for a long time. The insulation layer of the cables is prone to aging and damage, the junction box is prone to water leakage, and the grounding device is prone to corrosion and failure, which can lead to safety accidents such as leakage, short circuit, electric shock, and lightning strikes, seriously threatening personnel safety and the stable operation of the power plant. Traditional testing equipment has a single function, complicated operation, and weak anti-interference ability, requiring multiple instruments to be carried back and forth for operation, making it difficult to meet the electrical safety testing needs of photovoltaic power plants in all scenarios. Suzhou Laikesi New Energy Technology Co., Ltd. (LAILX) has launched the LXH601 Insulation and Grounding Comprehensive Tester, which provides a one-stop solution for insulation and grounding safety testing in photovoltaic power plants with integrated design, high-precision detection performance, and intelligent operation experience, safeguarding the safe and efficient development of the photovoltaic industry. Leakage current test

The electrical safety of photovoltaic power plants is the core guarantee for their operation, and the insulation performance and grounding reliability are directly related to the safety of power plant equipment and personnel. Insufficient insulation resistance can lead to leakage, short circuit, and burning of components and electrical equipment; If the grounding resistance is too high, it cannot effectively discharge fault current and lightning current, which can easily cause electric shock accidents and lightning disasters. Under the traditional detection mode, different instruments are required for insulation testing, grounding testing, and conductivity testing, which have a large number of devices, are inconvenient to carry, and have complex wiring and complicated operation, resulting in low detection efficiency; At the same time, traditional instruments have poor anti-interference ability, unstable and low accuracy in outdoor complex electromagnetic environments, making it difficult to meet the detection requirements of 1500V high-voltage systems in photovoltaic power plants. The LAILX LXH601 insulation grounding comprehensive tester breaks traditional limitations and achieves multifunctional integrated testing, providing a revolutionary solution for photovoltaic electrical safety testing.

Multi functional integrated design, one device can handle full dimensional testing. LXH601 breaks the traditional limitation of "one machine, one use" equipment, integrating more than 10 core functions such as insulation resistance testing, grounding resistance testing, conduction testing, voltage detection, polarity testing, Voc/Lsc testing, and insulation fault location. It does not require frequent switching of equipment and wiring, and can complete the electrical safety testing of photovoltaic power plant components, inverters, combiner boxes, cable lines, grounding devices and other equipment in one operation, greatly improving the efficiency of operation and maintenance testing, reducing equipment procurement costs and operation and maintenance complexity. The equipment is designed specifically for the 1500V high-voltage system of photovoltaic power plants, suitable for centralized, distributed, household photovoltaic and other full scenarios. It can meet the full cycle testing needs of safety acceptance before grid connection of new power plants, regular operation and maintenance testing of operating power plants, fault diagnosis, and annual inspection of grounding systems. It completely eliminates the troubles of carrying multiple instruments and complicated wiring.

High precision detection and strong anti-interference ability ensure accurate and reliable data. LXH601 adopts high-precision sampling chip and anti-interference circuit design, with insulation resistance testing range of 0-10G Ω and accuracy of ± 1%; The grounding resistance test range is 0-100 Ω, with an accuracy of ± 0.5%; The voltage testing range is 0-1500V, with an accuracy of ± 0.2%. The testing accuracy is at the leading level in the industry and can accurately capture small insulation defects and changes in grounding resistance. The equipment has strong electromagnetic interference suppression capability. In strong electromagnetic environments such as photovoltaic power plant inverters and combiner boxes, the test data is stable, drift free, and has good repeatability, avoiding the problems of traditional instruments being susceptible to interference and data distortion. At the same time, it supports dual-purpose testing for both AC and DC, and can be adapted to detect different types of electrical equipment. It automatically identifies testing modes, simplifies operation processes, and improves detection accuracy and stability.

Intelligent operation and convenient design reduce barriers and improve efficiency. LXH601 is equipped with a high-definition LCD display screen, a simple and intuitive Chinese operation interface, and a guided operation process that can be quickly mastered without professional training; Support one click start testing, real-time data display, automatic result judgment (qualified/unqualified), and fault code prompts, making it convenient for operation and maintenance personnel to quickly identify problems. The device is equipped with a large capacity data storage, which can store more than 1000 sets of test data. It supports USB flash drive export and Bluetooth wireless transmission, and is paired with a mobile app and computer software. It can achieve remote data viewing, historical record tracing, and automatic report generation, helping to digitize operation and maintenance management. The whole machine adopts a lightweight design, weighing only 2.5kg, and is equipped with a portable bag, making it easy for a single person to carry to the site; The shell adopts high-strength waterproof design, with a protection level of IP65, suitable for harsh outdoor environments, shock resistant, dustproof, waterproof, and improves equipment durability.

Fault location and safety protection, comprehensively safeguarding the safety of the power station. LXH601 has insulation fault location function, which can accurately locate the specific location of insulation faults in photovoltaic strings through percentage positioning method. Combined with disconnection/connection testing, it can quickly verify the fault point, greatly shorten the fault diagnosis time, and improve operation and maintenance efficiency. The device has built-in overvoltage, overcurrent, and leakage protection functions. If any abnormalities occur during the testing process, the power will be automatically cut off and an alarm will be issued to protect the safety of the device and personnel; Adopting a dual insulation design, the operation is safe and reliable, and meets the safety testing standards for photovoltaic high-voltage systems. At the same time, it supports grounding continuity testing (200mA) to ensure reliable connection of grounding conductors, effectively discharge current in case of faults, prevent electric shock accidents, and comprehensively strengthen the photovoltaic electrical safety defense line.

Suzhou LAILX has been deeply involved in the field of new energy security testing for many years, always taking it as its responsibility to safeguard the safety of photovoltaic power plants. The launch of LXH601 insulation grounding comprehensive tester is an important achievement of the company's technological innovation. This device has passed multiple authoritative certifications and has undergone extensive on-site testing and verification. Its performance is stable and reliable, and it is highly recognized and praised by photovoltaic power plant operation and maintenance enterprises, testing institutions, and construction parties. In the future, LAILX will continue to focus on the research and development of photovoltaic electrical safety testing technology, continuously optimize product performance, improve after-sales service system, provide solid guarantees for the safety, health, and sustainable development of the photovoltaic industry, and help steadily promote the "dual carbon" goal.

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