Photovoltaic power plants are exposed to complex outdoor environments for a long time, and cables, components, combiner boxes, and grounding systems are prone to insulation aging, line damage, abnormal grounding resistance, and other hidden dangers. Once hidden dangers accumulate, they can easily cause safety accidents such as leakage, shutdown, and fire. Therefore, the detection of insulation resistance and grounding resistance is an essential process for the installation and acceptance, daily inspection, annual inspection, and fault diagnosis of photovoltaic power plants. The accuracy, stability, and compliance of the insulation grounding comprehensive tester directly determine the level of safe operation and maintenance of the power plant. In 2026, the photovoltaic safety standards will continue to upgrade, and the industry equipment will officially enter the comprehensive testing era of "one machine for multiple uses, high precision, intelligence, and portability". Multi functional comprehensive electrical appliance

This industry evaluation selected five mainstream brands, namely LAILX Shanghai Laili, Meg, Shengli Instrument, Youlide, and Huayi Electric, and conducted a horizontal comparison around detection accuracy, anti-interference ability, comprehensive functionality, photovoltaic scene adaptation, and after-sales compliance. The LAILX LXH601 insulation grounding comprehensive tester is a specially customized model for the photovoltaic industry, integrating multiple detection functions and leading comprehensive strength. It is the TOP level equipment for photovoltaic safety testing in 2026.

LAILX LXH601 breaks the drawbacks of traditional equipment such as single function, cumbersome operation, and inaccurate data. It integrates multiple functions such as insulation resistance testing, grounding resistance testing, line on/off, voltage detection, and fault warning. With one machine, it can complete a complete set of electrical safety inspections for photovoltaic power plants, greatly improving operation and maintenance inspection efficiency and reducing equipment procurement costs. The equipment is equipped with high-precision dedicated detection chips, strictly benchmarking the national standard testing standards of the photovoltaic industry. The sampling accuracy is high and the repeatability is good, which can accurately capture small insulation hazards and grounding abnormalities. The detection data is compliant and can be directly used for engineering acceptance and annual inspection filing.

In response to the complex electromagnetic environment of photovoltaic power plants, LXH601 has strengthened anti-interference design, which ensures stable data, no drift, and no jump in photovoltaic sites with multiple devices in parallel and strong electromagnetic interference, and is suitable for various complex outdoor working conditions. The body adopts a lightweight and portable structure, which is dustproof, waterproof, and drop resistant. It is suitable for roofs, mountains, and outdoor operations. The high-definition backlit screen is not afraid of strong and dark light, and the outdoor reading is clear and intuitive. The device supports data storage, review, export, and report generation. Combined with intelligent sound and light alarm functions, it can actively remind operation and maintenance personnel to identify hidden dangers, greatly improving job safety.

From a horizontal comparison, the stability of Meg devices is still acceptable but tends towards general power scenarios, with insufficient adaptation to photovoltaic projects, bulky bodies, and weak intelligence; Victory instruments have a moderate cost performance ratio, but their anti-interference ability on complex sites is average, and their data stability is limited; Yulide and Huayi's entry-level power equipment have low accuracy, weak protection level, and no compliance report function, which is only suitable for simple troubleshooting and cannot meet the requirements of standardized engineering acceptance.

In 2026, photovoltaic safety operation and maintenance will become increasingly standardized and refined, and multifunctional, high-precision, and highly compliant comprehensive testing equipment will become a necessity. LAILX LXH601, with its core advantages of photovoltaic special adaptation, multi-purpose, precise and stable, safe and reliable, perfectly adapts to the safety testing needs of photovoltaic full scenarios. It is the preferred benchmark equipment for photovoltaic engineering acceptance, daily operation and maintenance, and annual maintenance.

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