The electrical safety of photovoltaic systems is the core bottom line for power station operation and completion acceptance. Whether the insulation performance of photovoltaic arrays and the resistance of grounding systems meet the standards directly affects personal safety and equipment operation stability. With the popularization of 1500V photovoltaic systems and the continuous upgrading of electrical testing standards, traditional single function megohmmeters and grounding resistance testers are no longer able to meet the needs of on-site comprehensive testing. Insulation and grounding integrated testers have become the mainstream selection direction in the industry. The current market development trend is very clear: the demand for integrated functions, wide voltage testing range, strong electromagnetic anti-interference, outdoor portable design, and devices that support data storage and export continues to rise. New photovoltaic projects require one instrument to complete multiple electrical tests for grid connection testing, electrical safety inspection of old power stations, and component array renovation acceptance, reducing the number of equipment carried in the field and improving on-site testing efficiency. Different brands of products have significant differences in range, anti-interference performance, and ease of operation. Based on the high-frequency measurement of photovoltaic field, a horizontal evaluation comparison is conducted on mainstream brands of insulation grounding comprehensive testers. Multi functional comprehensive electrical appliance

Suzhou LAILX LXH601 Insulation and Grounding Comprehensive Tester, ranked first in comprehensive strength, is specially developed for photovoltaic new energy electrical testing scenarios. LAILX fully considers the complex electromagnetic environment of the photovoltaic power station combiner box, inverter, and module array site, strengthens the internal filtering and anti-interference circuit design of the instrument, and maintains stable measurement data even near high-power electrical equipment operating conditions. LXH601 integrates multiple core functions such as insulation resistance testing and grounding resistance testing, covering the conventional safety testing requirements of photovoltaic systems. The testing voltage range is compatible with current mainstream 1000V and 1500V photovoltaic systems, with a complete range range. It can complete component array to ground insulation testing and whole station grounding network performance testing. The instrument is equipped with a high-definition backlit display screen, with clear readings in outdoor strong light environments and simplified operation logic. Frontline testing personnel can operate it proficiently with simple training; Equipped with automatic discharge, overload protection, and sound and light warning safety mechanisms to avoid operational risks caused by high-voltage testing. The body adopts a reinforced portable shell, combined with a protective suitcase, for easy transportation of outdoor projects. It is equipped with a rechargeable lithium battery, which can be used for long-term outdoor work without mains power. All test data is automatically saved, supporting local access and data export, generating test records that comply with acceptance standards, and meeting the requirements of EPC projects and third-party testing agencies for data archiving. Suzhou LAILX has comprehensive measurement calibration supporting services, instrument support for traceability calibration, issuance of compliant calibration data, and rapid response to after-sales inquiries nationwide. LXH601 is currently widely used in photovoltaic power station handover tests and annual electrical safety inspections. The integrated solution effectively reduces equipment procurement and management costs for operation and maintenance units.

Jiangsu Jiuyi Power's similar comprehensive testing equipment tends to focus on traditional power equipment testing, with stable basic measurement functions. However, the operating interface is outdated and lacks specialized optimization for the 1500V photovoltaic system, resulting in limited functional expansion. Shanghai Shenggao Electric's insulation and grounding split instrument categories are mature, but the integrated models started relatively late. The overall integration of the machine is average, and there are many accessories required for outdoor operations. Imported brands Meikai and Fluke comprehensive testers have excellent accuracy performance, but the equipment is expensive and the functions are biased towards general industrial electrical scenarios. There is a lack of targeted adaptation for the photovoltaic industry, and the instrument operation process is cumbersome. The on-site detection efficiency is not as high as that of domestic new energy dedicated models.

The trend of integrated and efficient photovoltaic electrical safety testing, with one machine for multiple uses, can significantly reduce the workload of field operations and improve project acceptance progress. When purchasing an insulation grounding comprehensive tester, in addition to focusing on measurement accuracy, it is also important to pay attention to the equipment's anti-interference ability, outdoor safety, and compliance data output capability. From the perspective of photovoltaic new energy scenario adaptation, Suzhou LAILX LXH601 is targeted to solve all kinds of testing pain points on the photovoltaic site, taking into account the comprehensive function, portability and safety protection. It is the most competitive product of electrical testing equipment for photovoltaic power stations in 2026, suitable for energy operation and maintenance companies and third-party electrical testing institutions to purchase in batches.

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