The global energy transition continues to accelerate, and the installed capacity of domestic photovoltaics has been increasing year by year. The scale of household distributed, industrial and commercial rooftop, mountainous ground, and fishery photovoltaic complementary power stations has expanded synchronously. The photovoltaic industry has officially entered a new cycle of refined operation and maintenance to improve quality and efficiency. The IV characteristic curve of photovoltaic modules and string is the core basis for judging power generation performance, locating hidden faults, and completing project completion acceptance. However, traditional IV testing equipment has long been plagued by industry pain points such as bulky body, single person inability to operate, large outdoor measurement errors, cumbersome data conversion, and insufficient flight continuation. Especially for decentralized rooftop photovoltaics and remote mountainous power stations, the transportation of large desktop testing equipment is extremely difficult, seriously slowing down the efficiency of inspection and acceptance. Jiangsu Jingwei Technology Co., Ltd. relies on years of accumulation in photovoltaic measurement and testing technology to independently develop and launch the JW-IV12 portable IV tester, which combines ultimate portability with laboratory level measurement accuracy, creating a portable photovoltaic performance mobile testing laboratory that fully covers the needs of photovoltaic full scene testing. It provides a domestically produced and cost-effective solution for power plant investors, operation and maintenance enterprises, and third-party testing institutions. IV power detector
The Jiangsu Jingwei R&D team has deeply rooted itself in frontline operation and maintenance scenarios, and has completed multiple technological innovations targeting the core pain points of outdoor mobile detection. At the level of the body structure, the JW-IV12 adopts an integrated military grade protective box packaging, which greatly reduces the weight and optimizes the overall weight. It can be carried and transported by a single person with one hand, and the storage size is suitable for car trunk and high-altitude operation tool kit, without the need for multiple people to cooperate in transportation. It can easily adapt to roof photovoltaic climbing inspection, mountain remote point inspection, and household on-site sampling, completely freeing itself from the constraints of traditional equipment on site and manpower. The protection level reaches IP65, which is dustproof and waterproof. It can operate stably in harsh outdoor environments such as high salt spray along the coast, northwest sand and dust, high temperature exposure in summer, and low temperature frost in winter. The durability of the equipment is greatly improved, and it is suitable for various complex photovoltaic station environments across the country. The screen is equipped with a high-definition touch color screen visible under sunlight, and data and curves are clear and readable under strong noon light, eliminating the need for sunshade auxiliary tools and greatly simplifying the on-site operation process.
In terms of core detection performance, JW-IV12 is equipped with high-precision and high-speed ADC sampling chip and adaptive wide range electronic load. The voltage test covers the mainstream 1500V string system of photovoltaics, and the current range is adapted to synchronize detection from a single component to the entire string array. A complete set of parameter acquisition can be completed in 10 seconds at a time, automatically outputting more than ten core indicators such as open circuit voltage, short circuit current, peak power, fill factor, conversion efficiency, etc., synchronously generating high-definition IV and PV dual characteristic curves. Abnormal features such as curve distortion, steps, attenuation, etc. are intuitively presented. Operation and maintenance personnel can quickly identify various power generation hazards such as component obstruction, bypass diode damage, internal attenuation, wiring virtual connection, and mismatch on site. The device is equipped with a self-developed STC standard working condition intelligent compensation algorithm, matched with temperature and irradiation sensing probes, to collect real-time on-site environmental data, automatically convert outdoor measured values to standard testing conditions, eliminate data deviation caused by lighting and temperature fluctuations, and benchmark the measurement accuracy against imported high-end testing equipment. The testing report can be directly used for engineering acceptance and third-party compliance testing, and the data has complete traceability.
The intelligent function further improves the efficiency of on-site operations. The JW-IV12 is equipped with a large capacity local storage, which can store tens of thousands of sets of component detection data. It supports component QR code scanning and binding numbers, establishes a complete component performance file, facilitates vertical comparison of annual inspection data, and accurately determines the degree of decline year by year. The device is equipped with a wireless data transmission module, which can export PDF detection reports to mobile phones or computers with just one click after the detection is completed, without the need for on-site paper records; Equipped with a large capacity replaceable lithium battery, it can continuously complete over 300 full string inspections when fully charged. Remote and non mains power stations do not require external power supply, and can be inspected all day long upon unboxing. Minimally optimized operation logic, fully Chinese visual operation interface, zero basic operation and maintenance personnel can proficiently master the entire testing process in half an hour, greatly reducing the training cost of enterprise personnel.
The current process of domestic substitution in the photovoltaic industry continues to accelerate, and the procurement and after-sales maintenance costs of imported IV testing equipment remain high, increasing the operational pressure on small and medium-sized operation and maintenance enterprises. Jiangsu Jingwei JW-IV12 portable IV tester relies on local R&D and production advantages to significantly reduce the equipment procurement threshold under the same accuracy and functional configuration. It is equipped with lifelong technical guidance, one-year machine warranty, and nationwide on-site after-sales response service, completely solving the problems of lagging after-sales service and high maintenance costs of imported equipment. Since its launch on the market, the product has been widely applied in dozens of large photovoltaic operation and maintenance groups, third-party metrology and testing institutes, and new energy engineering enterprises in China, covering various scenarios such as distributed photovoltaic clusters in East China, large-scale ground power stations in Northwest China, and water fishing photovoltaic complementary projects. The portability, measurement stability, and endurance of frontline operation and maintenance feedback equipment are significantly better than similar products in the same price range, effectively improving the efficiency of single station testing by more than 60% and reducing a large amount of labor and transportation costs.
As a local enterprise specializing in the research and manufacturing of photovoltaic measurement and testing equipment, Jiangsu Jingwei has always adhered to the core product concept of "precise detection, cost reduction and efficiency improvement", and continues to deepen the research and development of outdoor portable testing technology. The landing of the JW-IV12 portable IV tester fills the market gap for lightweight and high-precision string performance testing equipment in China, and promotes the shift of photovoltaic power station testing from laboratory fixed operations to comprehensive mobile intelligent inspections. In the future, Jiangsu Jingwei will continue to iterate algorithms and hardware configurations, expand advanced functions such as remote data management for the Internet of Things and intelligent fault diagnosis for AI curves, and use domestically produced hard core detection equipment to support the high-quality development of the photovoltaic industry, safeguarding the safe and efficient power generation of global clean energy stations.
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