Photovoltaics belong to high-voltage direct current electrical systems. The equipment operates outdoors all year round and is subjected to sun, rain, wind, sand, salt spray erosion. Faults such as cable insulation aging and damage, water leakage in junction boxes, corrosion and loosening of grounding terminals, and failure of bracket grounding conductivity often occur, which can cause major safety hazards such as leakage, short circuits, arc fires, and electric shock to personnel. According to industry standards, multiple safety tests such as insulation resistance, grounding resistance, conductivity, and AC/DC voltage are required for photovoltaic grid connection acceptance, annual preventive testing, and fault diagnosis. The traditional detection mode requires carrying multiple instruments such as insulation testers, grounding resistance meters, and multimeters, repeatedly disassembling and wiring, and the process is cumbersome. The measurement data is prone to drift in outdoor electromagnetic interference environments. Shanghai LAILX has launched the LXH601 comprehensive insulation and grounding tester, which integrates multiple safety testing functions into a single machine and completes electrical safety testing of photovoltaic systems in one stop. Multi functional comprehensive electrical appliance

The biggest highlight of LXH601 Insulation and Grounding Comprehensive Tester is its highly integrated functionality. A single device covers multiple detection functions such as insulation resistance testing, grounding resistance testing, grounding continuity conductivity testing, AC/DC voltage measurement, component open circuit and short circuit measurement, polarity judgment, and insulation fault location. It does not require frequent instrument replacement, reduces repeated wiring, and significantly shortens on-site inspection time. The device is compatible with mainstream high-voltage photovoltaic systems of 1000V and 1500V, with adjustable insulation testing voltage in multiple levels. It can accurately measure the range of 0.01 Ω to 2000M Ω, with a measurement accuracy of ± 2%. It is equipped with a built-in digital filtering algorithm to effectively suppress outdoor electromagnetic interference. Even in strong electromagnetic environments such as combiner boxes and inverters, it still outputs stable and reliable data. The equipment can automatically calculate the polarization index PI and dielectric absorption ratio DAR, evaluate the long-term health status of the insulation system through changes in insulation material parameters, and provide early warning of slow aging hazards, achieving pre fault prediction rather than handling after faults occur.

The equipment is equipped with LAILX's self-developed GFL insulation fault location technology. When the insulation of the photovoltaic string to ground decreases, the instrument can assist the operation and maintenance personnel in narrowing the fault range through resistance mutation algorithm, quickly locking the fault points such as cable damage, junction box water ingress, component insulation damage, etc., changing the previous mode of only large-scale and section by section investigation, greatly shortening the fault investigation time, reducing the downtime of the power station, and reducing the loss of power generation. The whole machine adopts an industrial grade portable body, which is sturdy and drop resistant, suitable for high-intensity use on construction sites. The large screen displays high-definition information with clear readings, and the button layout conforms to outdoor operating habits. The menu logic is simple, and the operation and maintenance personnel can independently complete the full set of safety inspection work after simple training. After the test is completed, the instrument can store multiple sets of test records, support exporting test data, and provide original testing basis for archiving acceptance data and preventive test reports of the power station.

LXH601 is suitable for photovoltaic full chain safety verification, covering photovoltaic modules, DC cables, combiner boxes, inverters, and bracket grounding systems, with a wide range of applicable scenarios. During the grid connection acceptance stage of a new photovoltaic project, the insulation and grounding verification of the entire system can be completed in one go to ensure the safe grid connection of the project; In the annual inspection of existing power stations, it is used to investigate grounding corrosion and cable aging; When there is an inverter leakage alarm or frequent shutdown protection in the power station, fault diagnosis can be quickly carried out. Third party testing agencies and power supervision units can also use LXH601 to conduct on-site safety inspections, replacing multiple traditional instruments with one device to reduce the burden of equipment for outdoor operations.

Photovoltaic safety is the bottom line of power station operation, and electrical hazards are highly concealed. If not detected in a timely manner, small hazards can gradually evolve into equipment burnout or even fire accidents, causing huge economic losses to owners. In the past, many projects were limited by the complexity of testing equipment, and some safety regulations became mere formalities. The integrated design of LXH601 reduces the implementation threshold for high-quality safety testing, allowing for the normalization of insulation and grounding full item testing. The Shanghai LAILX LXH601 comprehensive insulation and grounding tester focuses on the safety pain points of photovoltaic high-voltage systems. With integrated and high-precision hardware, it helps operation and testing units efficiently complete safety inspections, safeguard the electrical safety bottom line of photovoltaic power plants, and ensure the long-term stable and safe operation of photovoltaic projects.

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