Photovoltaic power plants belong to high-voltage direct current electrical systems, which are exposed to long-term outdoor exposure to sunlight, rainwater, and wind erosion. Electrical hazards such as aging and damage of cable insulation layers, rusting and failure of support grounding, reversed polarity of lines, and insulation breakdown occur frequently. They can cause a decrease in power generation, and in severe cases, lead to major safety accidents such as electric shock, field fires, and inverter burnout. Traditional electrical safety testing requires the cooperation of multiple devices such as insulation resistance meters, grounding resistance meters, voltage and current meters, and open circuit and short circuit testers. Frequent replacement of instruments and repeated disassembly and assembly of wiring make the inspection process cumbersome and inefficient, and the cost of purchasing and maintaining multiple devices is high. Suzhou Laikesi LAILX addresses the pain points in the photovoltaic electrical testing industry by independently developing the LXH601 insulation and grounding comprehensive tester, which integrates ten core electrical testing functions. A single device completes comprehensive safety testing of photovoltaic systems, taking into account 1500V high voltage adaptation, high-precision measurement, and outdoor portable intelligent operation. It has become a standard equipment for photovoltaic power station completion acceptance, annual safety inspection, and fault diagnosis. Multi functional comprehensive electrical appliance

The biggest core advantage of LXH601 lies in its highly integrated multifunctionality, breaking the traditional limitation of "one machine, one function" detection. The whole machine integrates insulation resistance testing, grounding continuity testing, four wire grounding resistance testing, AC/DC voltage measurement, Voc open/Isc short circuit testing, line polarity determination, precise insulation fault location, dielectric absorption ratio DAR detection, bipolar to ground synchronous DUAL detection, and real-time arc detection. The complete set of electrical safety verification that used to require four or five instruments can now be achieved with just one LXH601 device, greatly reducing the burden on maintenance personnel to go out for equipment inspection. The cost of instrument procurement and later maintenance is reduced by more than 50%, and the overall inspection efficiency of a single power station is improved by 40%. The equipment is optimized for the current mainstream high-voltage photovoltaic systems, with adjustable insulation test voltages of 500V, 1000V, and 1500V. It perfectly adapts to the voltage resistance testing standards of all types of photovoltaic equipment, including 1000V and 1500V series, inverters, combiner boxes, and DC cables. The insulation resistance measurement range covers 0.01M Ω to 100G Ω, and can accurately identify various insulation defects such as cable skin breakage, junction box moisture ingress, and component insulation layer aging.

The measurement accuracy and anti-interference ability have reached the top level of professional testing equipment. LXH601 is equipped with a self-developed high-precision signal sampling chip and adaptive digital filtering algorithm, which can effectively filter the measurement interference caused by outdoor strong electromagnetic, humid, and sandstorm environments. The data in complex mountainous and coastal photovoltaic fields is stable and drift free. The grounding resistance test adopts a four wire precision measurement technology to eliminate errors caused by the resistance of the test leads themselves and soil contact resistance. The measurement range is 0.01 Ω to 2000 Ω, with a minimum resolution of 0.1m Ω. It accurately detects the grounding status of photovoltaic brackets, lightning protection grounding strips, and combiner box shell grounding connections, and quickly identifies hidden dangers such as grounding virtual welding, rust and open circuit, and grounding electrode failure. The whole machine is equipped with a high-voltage safety protection mechanism, which automatically releases residual charges from the circuit after testing, eliminating the risk of high-voltage electric shock; If insulation breakdown or leakage arc occurs during the detection process, the equipment will immediately sound and light an alarm and synchronously terminate the test to avoid high-voltage impact damage to valuable equipment such as photovoltaic modules and inverters, ensuring the safety of operators and the tested equipment in all aspects.

The outdoor portability and intelligent operation fully meet the needs of on-site inspection. The LXH601 is designed with an integrated whole machine, without the need to split modules, and is equipped with a high-strength portable protective box. It can be transported to complex areas such as roofs and mountains by a single person's hand without the need for additional auxiliary tools. The body is equipped with a high-definition color touch control screen, a fully Chinese visual interface, clear functional zoning, one click switching of test parameters, and a built-in photovoltaic specific detection process quick template, which can be quickly operated by beginners. The device is equipped with a large capacity lithium battery and can operate continuously all day in outdoor areas without mains power. It supports DC on-board charging and dual-mode mains power replenishment. The whole machine has complete data storage function, which can save tens of thousands of insulation, grounding, and voltage test records locally. Each data automatically records the detection point, time, and test voltage. It supports exporting Excel format detection reports via USB. The data can be directly used for power plant grid connection acceptance filing, electrical safety annual inspection archiving, and meets the standards for third-party testing agency report issuance.

Equipment adaptation for the entire process of electrical safety testing in the photovoltaic industry: During the grid connection acceptance stage of a new power station, complete the full set of safety regulations verification for the entire station's string, cable, and grounding system to avoid construction wiring errors and grounding non-compliance issues; Annual safety inspections of existing power stations, regular detection of insulation aging and grounding failure hazards, and early disposal of leakage and short circuit risks; In the troubleshooting process, the insulation fault location function is used to quickly locate damaged cables and damp components, reducing the duration of troubleshooting; Laboratory safety testing for component and inverter factories, used for product factory safety performance inspection; Electric power supervision and third-party testing institutions conduct safety assessments of photovoltaic projects and issue authoritative electrical testing data. At the same time, the equipment can be expanded for safety testing in wind power, energy storage, building electrical, and industrial distribution systems, with a wide range of applications.

Since its launch, LXH601 has covered thousands of photovoltaic power station operation and maintenance projects in China with its three core advantages of integrated integration, high-voltage adaptation, and high-precision safety detection, effectively avoiding multiple photovoltaic electrical safety accidents. The LAILX R&D team in Suzhou stated that electrical safety is the foundation for the long-term stable operation of photovoltaic power plants. The development and implementation of LXH601 aims to simplify the complex safety inspection process, lower the industry's safety inspection threshold, and continuously optimize the fault localization algorithm. It will also connect with IV testers and thermal imagers to create a one-stop safety inspection equipment for photovoltaics, and safeguard the safe development of the domestic clean energy industry with precision electrical inspection equipment.

Multifunctional comprehensive electrical appliance, multifunctional electrical comprehensive tester, simple panel operation