Photovoltaic systems are installed outdoors all year round, and components, cables, and junction boxes are prone to insulation layer damage due to rainwater immersion, sand and dust erosion, and low-temperature freezing and thawing. The decrease in insulation resistance to ground can trigger safety accidents such as leakage, frequent inverter alarms, short circuits, and fires. According to the GB/T42006 Photovoltaic Equipment Inspection Specification, the grid connection acceptance and annual operation and maintenance of power stations must carry out full system insulation resistance testing, and dedicated photovoltaic insulation testers have become a necessary safety control tool. Jiangsu Jingwei relies on the accumulation of power detection technology to develop the JW-J25 insulation resistance tester, which is designed to optimize algorithms for photovoltaic DC systems, solve the pain points of ordinary megohmmeters being affected by photovoltaic self generated voltage interference and reading distortion, and comprehensively cover insulation detection work for components, combiner boxes, inverters,…
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Solar irradiance is a core environmental parameter that determines the amount of photovoltaic power generation. Accurate irradiance data is indispensable from the feasibility study site selection and component tilt angle optimization design of photovoltaic power plants in the early stage, to the calculation of power generation efficiency, PR value calculation, and IV testing environment compensation in the later stage. Ordinary simple illuminance meters on the market have insufficient accuracy and severe temperature drift, which cannot meet the measurement standards of the photovoltaic industry. Imported scientific research grade irradiation equipment has high prices and maintenance costs. Based on the practical needs of the photovoltaic industry, Jiangsu Jingwei has launched the JW-F04 portable irradiance meter, which adopts first level thermopile optical sensing technology and balances high precision and portability. It has become a standard instrument for photovoltaic surveying, on-site testing, and scientific research experiments. Portable irradiation system dosimeter The JW-F04 optical sensor…
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With the acceleration of photovoltaic module technology iteration, large-sized silicon wafers and ultra-thin solar cells have become mainstream in the market. Hidden defects such as hidden cracks, broken grids, virtual soldering, and fragments in solar cells have gradually become key pain points restricting the power generation of power plants. These internal defects cannot be identified by the naked eye, and conventional multimeters and IV testers are difficult to troubleshoot. EL electroluminescence imaging detection has become a necessary means of component quality control. In the past, fixed EL equipment in laboratories was unable to operate outdoors due to site and power limitations. Outdoor EL testing has long relied on large vehicle mounted equipment, resulting in high testing costs. Jiangsu Jingwei independently developed the JW-EL2 portable EL detector, relying on high-definition infrared imaging technology and integrated portable structure, breaking the constraints of the site, achieving non-destructive EL testing of factory production lines,…
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Against the backdrop of the continuous implementation of China's dual carbon strategy and the parallel development of photovoltaic power station stock expansion and new construction projects, photovoltaic module performance testing, power station completion acceptance, and performance survey of old power stations have become essential needs in the industry. Traditional large-scale desktop IV testing equipment is bulky and difficult to transport, making it difficult to adapt to scattered inspection scenarios such as rooftop distributed, mountain photovoltaic, and household photovoltaic. Jiangsu Jingwei Technology has been deeply involved in the research and development of photovoltaic testing instruments for many years. Relying on self-developed circuit algorithms and lightweight structural design, it has launched the JW-IV12 portable IV tester, which has laboratory level testing accuracy, integrated portable body, and full specification component compatibility, filling the gaps in photovoltaic field performance testing and becoming the core inspection equipment for EPC general contractors, third-party testing institutions, and…
READ MOREPhotovoltaic power plants are exposed to complex outdoor environments for a long time, and components, cables, combiner boxes, and other equipment are prone to insulation performance degradation due to aging, moisture, corrosion, physical damage, etc., which can lead to safety accidents such as leakage, short circuits, and fires, threatening personnel safety and power plant asset safety. Jiangsu Jingwei Technology Co., Ltd. is deeply engaged in the field of photovoltaic electrical safety testing, and has independently developed the JW-J25 insulation resistance tester. With high voltage precision testing, multiple safety protections, intelligent and convenient operation, and durability and reliability as its core, it provides professional equipment support for photovoltaic system electrical safety testing, and builds a solid defense line for the safe operation of photovoltaic power stations. DC withstand voltage, insulation impedance, grounding resistance, leakage current The voltage level of photovoltaic systems continues to improve, and 1500V string systems have become mainstream,…
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Solar irradiance is a core environmental parameter that affects the power generation efficiency of photovoltaic modules. Accurate measurement of irradiance data is crucial for the site selection, system design, power generation prediction, efficiency evaluation, and operation optimization of photovoltaic power plants. Jiangsu Jingwei Technology Co., Ltd. relies on precision optical sensing technology and deep experience in the photovoltaic industry to create the JW-F04 portable irradiance meter with ingenuity. Its core features include high-precision measurement, multi parameter synchronous monitoring, portability, durability, and intelligent calibration, providing accurate data support for photovoltaic system light energy evaluation and helping photovoltaic power plants achieve refined management and improve power generation efficiency. Portable irradiation system dosimeter The power generation of photovoltaic power plants is positively correlated with solar irradiance. Traditional irradiance measurement equipment has problems such as low accuracy, single function, poor environmental adaptability, and insufficient data stability, making it difficult to meet the high-precision monitoring…
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The internal hidden defects of photovoltaic modules, such as hidden cracks, broken grids, fragments, virtual soldering, etc., are important causes of power plant power generation attenuation and shortened lifespan. These types of defects are difficult to identify with the naked eye, and traditional detection methods are inefficient and inaccurate, becoming a major challenge in the field of photovoltaic operation and maintenance. Jiangsu Jingwei Technology Co., Ltd. focuses on the pain points of photovoltaic module quality inspection and has independently developed the JW-EL2 portable EL detector. Based on the principle of electroluminescence (EL) imaging, it provides professional solutions for the quality control of photovoltaic modules throughout their lifecycle, with high-definition imaging, fast detection, and portability as the core. It helps photovoltaic power plants avoid quality risks and ensure efficient power generation. Photovoltaic power station tester Electroluminescence detection technology is currently the mainstream technology for detecting internal defects in photovoltaic modules. By…
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Against the backdrop of the continuous promotion of the "dual carbon" target and the steady expansion of the photovoltaic industry, the refined operation and precise fault diagnosis of photovoltaic power plants have become the core link to ensure power generation efficiency and reduce operating costs. Jiangsu Jingwei Technology Co., Ltd. is deeply engaged in the research and development of photovoltaic testing equipment. With solid technical accumulation and rich industry experience, it has launched the JW-IV11 portable IV tester. This device has the core advantages of high-precision measurement, intelligent analysis, and portable design, providing a one-stop solution for photovoltaic string performance testing and fault diagnosis, and helping photovoltaic power plants achieve efficient management throughout their entire lifecycle. IV power detector As the core power generation unit of a power station, the current voltage (IV) characteristic curve of photovoltaic modules is a key basis for reflecting power generation performance and locating hidden…
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The power generation efficiency of photovoltaic power plants is closely related to the meteorological environment. The dynamic changes in meteorological parameters such as irradiance, ambient temperature, wind speed, wind direction, and humidity directly affect the power generation performance of photovoltaic modules and the overall power generation of the power plant. Accurate, comprehensive, and real-time meteorological data monitoring is an important foundation for photovoltaic power plant site selection, system design, power generation prediction, efficiency evaluation, fault diagnosis, and refined operation and maintenance. Jiangsu Jingwei Technology Co., Ltd. is based on the demand for refined and intelligent development of the photovoltaic industry. With advanced multi-sensor integration technology, we have independently developed the JW-Q56 portable weather station, providing a one-stop, high-precision, all-weather meteorological environment monitoring solution for photovoltaic power plants. Portable weather station Traditional meteorological monitoring equipment is mostly installed in a fixed manner, which has problems such as complex installation, high cost,…
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Photovoltaic power plants are exposed to complex outdoor environments for a long time, and components, cables, combiner boxes, inverters, and other equipment are susceptible to moisture, aging, corrosion, external damage, and other factors, leading to insulation performance degradation, grounding faults, electrical leakage, and other electrical safety hazards. This not only affects the normal operation of the power plant, but can also cause safety accidents such as fires and electric shocks, posing a threat to personnel and property safety in severe cases. Jiangsu Jingwei Technology Co., Ltd. is deeply engaged in the field of photovoltaic electrical safety testing. With professional technical accumulation and rich industry experience, we have carefully developed the JW-J25 insulation resistance tester, which provides comprehensive, accurate, and safe testing capabilities to safeguard the electrical safety of photovoltaic power plants. DC withstand voltage, insulation impedance, grounding resistance, leakage current The electrical safety testing of photovoltaic systems is a key…
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The power generation efficiency of photovoltaic power plants is closely related to solar irradiance, and accurate measurement of irradiance data is the core foundation for photovoltaic system design, power generation prediction, efficiency evaluation, and fault diagnosis. In the actual operation of photovoltaic power plants, deviations in irradiation data can lead to inaccurate power generation assessments and operational decision-making errors, directly affecting the investment returns of the power plant. Jiangsu Jingwei Technology Co., Ltd. is based on the refined development needs of the photovoltaic industry. With advanced optical sensing technology and precision manufacturing processes, we have independently developed the JW-F04 portable irradiance meter. With the advantages of high precision, portability, and intelligence, we provide professional solutions for solar energy measurement and environmental monitoring in photovoltaic power plants. Portable irradiation system dosimeter The solar irradiance is influenced by various factors such as time, season, weather, and geographical location, and has the characteristics…
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In the booming process of the photovoltaic industry, photovoltaic modules, as the core power generation unit of power plants, have hidden defects such as internal cracks, broken grids, fragments, and black hearts, which are the key causes of module power attenuation, hot spot faults, and shortened lifespan. These microscopic defects cannot be recognized by the naked eye, and traditional detection methods are difficult to accurately capture, becoming a "pain point" for quality control of photovoltaic modules and power station operation and maintenance. Jiangsu Jingwei Technology Co., Ltd. conforms to the development needs of the industry and relies on its profound technical accumulation to create the JW-EL2 portable EL detector with ingenuity. It uses electroluminescent imaging technology to achieve non-destructive, rapid, and accurate detection of internal defects in photovoltaic modules, providing core guarantees for quality control throughout the entire life cycle of photovoltaic modules. Photovoltaic power station tester Electroluminescence (EL) detection…
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