Photovoltaic power plants belong to high-voltage direct current electrical systems, which are exposed to rain, snow, sand, moisture, and lightning erosion for a long time in the open air. The insulation layer of the cables is aging and damaged, the junction box is leaking water and getting damp, and the grounding device is corroded and falsely connected. Insulation failure can cause leakage, electric shock, short circuit, and fire. If the grounding resistance exceeds the standard, it cannot effectively discharge lightning surges, which can easily penetrate components and burn out inverters, directly threatening the personal safety of operation and maintenance personnel and the huge assets of the power plant. According to the IEC61730 photovoltaic safety specification and the domestic photovoltaic power station completion acceptance standards, multiple safety tests such as insulation resistance, grounding continuity, and AC/DC withstand voltage must be completed for power station grid connection, annual operation and maintenance, and fault maintenance. However, the traditional testing mode requires multiple devices including insulation shake meters, grounding resistance testers, and voltage and current meters, which are cumbersome to carry, complex to connect, and have a lengthy testing process. Different device data cannot be linked and analyzed, resulting in low outdoor testing efficiency. Suzhou Laikesi New Energy Technology Co., Ltd. (LAILX) has launched the LXH601 Insulation Grounding Comprehensive Tester to address the pain points of photovoltaic electrical safety testing. It integrates eight core testing functions and can complete a complete set of safety testing for photovoltaic systems in one stop with a single device. It is compatible with 1500V high-voltage photovoltaic systems and is equipped with innovative insulation fault location technology, which balances high precision, portability, and intelligence. It has become a standard electrical safety testing equipment for photovoltaic engineering acceptance, third-party testing, and operation and maintenance enterprises. Multi functional comprehensive electrical appliance

The biggest breakthrough of LXH601 lies in the integration of multiple functions, completely breaking the limitations of traditional testing equipment of "one machine, one use". It integrates eight functions: insulation resistance testing, grounding resistance testing, equipotential continuity testing, AC/DC voltage detection, polarity judgment, component Voc open circuit voltage, Isc short-circuit current measurement, and insulation fault location. In the past, three instruments were required to complete the testing project in three separate wiring steps. Now, only one device can be used for single wiring, which directly improves the efficiency of outdoor inspection and testing by more than 40%, greatly reducing the weight of equipment carried by operation and maintenance personnel and on-site operation steps. The equipment insulation test covers multiple levels of 500V, 1000V, and 1500V, perfectly adapting to the current mainstream 1000V and 1500V high-voltage photovoltaic string systems. The insulation resistance measurement range covers 0.01M Ω to 10G Ω, with a measurement accuracy of better than ± 1%. It can accurately determine the degree of insulation aging and damage of cables, components, and combiner boxes; The grounding resistance test adopts the four wire method for precise measurement, avoiding soil resistance interference, with a range of 0.01 Ω to 1000 Ω, meeting the requirements of photovoltaic lightning protection grounding and equipment shell grounding compliance testing. It automatically compares the national standard grounding resistance threshold and highlights the alarm for unqualified data. The device has a unique GFL insulation fault location algorithm that can monitor real-time changes in the insulation resistance of the positive and negative poles of the photovoltaic string to ground. Through resistance mutation data, it can accurately trace cable damage, junction box water leakage, and component insulation failure fault branches, without the need to disassemble the line section by section for troubleshooting. It quickly locks in the fault array and faulty components, greatly reducing the downtime for insulation fault maintenance and minimizing power generation losses.

At the hardware level, it is equipped with industrial grade anti-interference measurement chips, which optimize the filtering circuit for the electromagnetic interference environment of on-site frequency converters and inverters in photovoltaic power plants. Even under strong electromagnetic interference conditions, the measurement data remains stable and accurate, without numerical jumps or measurement distortion problems; The body is equipped with a 4-inch high-definition LCD touch display screen, a fully Chinese operation menu, and the detection parameters, real-time curves, and judgment results are displayed on the same screen. The interface logic is simplified, and operation and maintenance personnel can operate independently without complex training. The whole machine adopts a portable integrated box design, with a high-strength insulation and flame-retardant material shell, IP65 dustproof and waterproof protection level, suitable for outdoor humid and sandy working environments. The weight of the whole machine is only 5.5kg, and it is equipped with portable handles and straps, which can be easily carried by a single person to mountainous areas, rooftops, and remote desert power stations. Dual adaptation of power supply mode, built-in large capacity rechargeable lithium battery, capable of continuous detection for 8 hours on full charge, independent operation in outdoor scenarios without mains power; At the same time, it supports external 220V mains power supply, and can be plugged in for long-term fixed laboratory testing. It is equipped with overcharge and overdischarge protection circuits to extend the battery life. The device has a built-in large capacity storage that can store tens of thousands of sets of testing data. Each record is automatically labeled with the testing location, time, and photovoltaic array number. It supports USB one click data export and is equipped with PC safety inspection and analysis software. It automatically generates standardized testing reports that comply with grid connection acceptance standards, summarizes all insulation, grounding, and withstand voltage testing data, and provides suggestions for rectifying non-conforming items. The report can be directly used for project completion filing and annual safety assessment.

LXH601 covers the entire life cycle electrical safety testing scenarios of photovoltaic power plants. During the completion and acceptance stage of new power plants, a complete set of safety regulations testing is carried out on all strings, cables, inverters, and grounding systems to verify the compliance of equipment insulation and grounding, and to avoid electrical safety hazards from the source; In daily annual maintenance inspections, regularly retest insulation resistance and grounding resistance, track the aging and corrosion trends of cables and grounding devices, replace damaged insulation cables and corroded grounding flat iron in advance, and prevent leakage and lightning accidents; In the scenario of power station fault shutdown and maintenance, the insulation fault positioning function is used to quickly locate the points of leakage and short circuit faults, shorten the shutdown and maintenance cycle, and reduce the loss of power generation revenue; At the same time, it is suitable for testing all types of photovoltaic projects such as energy storage photovoltaic integrated power stations, household distributed photovoltaics, and industrial and commercial rooftop photovoltaics, with universality covering various types of photovoltaic projects of large, medium, and small sizes. The third-party testing agency can use this equipment to complete all electrical safety sampling work for photovoltaic projects with one set of equipment, without the need to purchase multiple single function instruments, effectively reducing equipment procurement costs and simplifying on-site testing processes.

As a high-tech enterprise deeply involved in the field of photovoltaic testing, Suzhou LAILX strictly follows the national and international standards for photovoltaic safety testing to complete the research and factory calibration of LXH601. Each device undergoes 72 hours of high and low temperature, electromagnetic interference stability testing before leaving the factory to ensure stable measurement accuracy for long-term use. The enterprise provides comprehensive full cycle after-sales service, with a 1-year original factory warranty for the entire machine, extended warranty for the measurement core module, and lifetime free upgrade of fault localization algorithms and reporting software; Technical service engineers are equipped in various provinces and cities across the country, providing on-site practical training for equipment delivery and 24/7 online technical Q&A. For large photovoltaic groups and third-party testing laboratories, customized development services can be provided to adapt to enterprise exclusive report formats and batch testing needs.

With the high-voltage and large-scale development of photovoltaic power plants, electrical safety accident prevention and control have become the core focus of industry operation, and the market demand for integrated, high-precision insulation and grounding comprehensive testing equipment continues to rise. LXH601, with its three core advantages of multifunctional integration, high-voltage adaptation, and precise fault location, solves the industry pain points of low efficiency, complex equipment, and difficult fault diagnosis in traditional photovoltaic electrical testing. It standardizes the photovoltaic safety inspection process and comprehensively safeguards the electrical operation safety of photovoltaic systems. In the future, LAILX in Suzhou will continue to upgrade the LXH601 measurement algorithm, expand the detection and adaptation functions of energy storage high-voltage systems, and form a complete set of photovoltaic multi-dimensional detection solutions with LX-PV33, LXG30, LX-F100, and LXH506, covering five major detection dimensions of component performance, internal defects, thermal hazards, meteorological monitoring, and electrical safety. It will provide complete equipment support for the digital and safe operation and maintenance of the photovoltaic industry, and help promote the high-quality and healthy development of the domestic new energy industry.

Multi functional comprehensive electrical appliance, safety and regulatory comprehensive tester, multi-functional electrical comprehensive tester