With the large-scale expansion of the domestic photovoltaic industry, the number of distributed rooftop power stations, mountain centralized photovoltaic, and household photovoltaic projects continues to surge. The demand for lightweight and high-precision on-site IV testing equipment in power station acceptance, daily operation and maintenance, and third-party testing links continues to rise. Traditional desktop IV equipment is bulky and inconvenient to transport. Ordinary simple testers have pain points such as slow scanning speed, large high-voltage measurement errors, and inability to adapt to the new 1500V string, making it difficult to meet the rapid detection needs of outdoor multi scene testing. Jiangsu Jingwei Technology has been deeply involved in the research and development of photovoltaic testing instruments for many years. Based on the practical pain points of front-line operation and maintenance personnel, the JW-IV12 portable IV tester has been newly launched. With an integrated portable structure, high-precision electrical performance calculation, and intelligent curve analysis algorithm, it creates an integrated solution for photovoltaic on-site performance testing, covering the entire process of component factory sampling, power station grid connection acceptance, and stock power station attenuation diagnosis, becoming the core testing equipment in the field of photovoltaic operation and maintenance. Outdoor IV tester
The JW-IV12 has achieved a comprehensive upgrade in hardware architecture, integrating high-precision electronic loads, high-speed signal acquisition units, embedded industrial touch screens, and a storage type protective box for integrated packaging. The total weight of the device is less than 5kg, and it can be carried by a single person for transportation. It is suitable for complex testing sites with inconvenient transportation such as roofs, Gobi, mountains, and factory rooftops, completely solving the problem of traditional large-scale IV equipment being carried by multiple people and complicated on-site wiring. Electrical measurement performance benchmarking IEC 60904 international photovoltaic testing standard, supporting synchronous testing of up to 1500V DC high voltage and 30A high current string, compatible with monocrystalline silicon, polycrystalline silicon TOPCon、HJT、 All types of photovoltaic modules, including perovskite stacks, have a voltage resolution of up to 0.1V and a current resolution of 0.01A. The total testing error is controlled within ± 1%, far exceeding the accuracy level of industry standard portable devices. The equipment is equipped with bidirectional high-speed scanning technology, and a single complete IV/P-V curve acquisition only takes 8 seconds, without long waiting time. It can complete the detection of hundreds of components and dozens of photovoltaic strings in a single day, greatly improving the efficiency of power station inspection work.
In response to the complex environmental interference problem in photovoltaic sites, JW-IV12 is equipped with multiple intelligent compensation algorithms and integrates irradiation and temperature synchronization acquisition interfaces. It can automatically adjust irradiance data to STC standard testing conditions, eliminating data deviations caused by environmental factors such as weak light in the morning and evening, high temperature exposure, and low temperature frost. The detection results can be directly used for power plant generation evaluation and power attenuation determination. The equipment can automatically extract five core parameters: open circuit voltage Voc, short-circuit current Isc, peak power Pmax, fill factor FF, and conversion efficiency. Real time visualization of IV and P-V hyperbolic graphs can be generated, and operation and maintenance personnel can quickly identify hidden faults such as bypass diode damage, component cracking, PID attenuation, local hot spots, and wiring virtual connections through the curve shape, without the need for complex professional analysis and reducing the operating threshold of the equipment. The whole machine is equipped with a large capacity long-lasting lithium battery, which can continuously complete 400 complete tests when fully charged. It can operate continuously throughout the day in remote photovoltaic fields without external power supply; Equipped with a Type-C fast charging interface, it supports emergency power replenishment for in vehicle and mobile power supplies, and is suitable for long-term field inspection operations.
The intelligent data management system is one of the core advantages of JW-IV12. The device is equipped with a built-in local large capacity storage module, which can store tens of thousands of sets of detection curves and parameter data. It supports one click export of PDF standardized detection reports, which automatically record component numbers, detection locations, environmental temperature and radiation, detection time and other traceability information. It perfectly adapts to the needs of grid connection acceptance, third-party testing institution qualification archiving, and photovoltaic insurance claims and evidence collection. Supports Bluetooth wireless data transmission, can synchronize curves and data to mobile phones and tablet terminals, and is equipped with Jiangsu Jingwei's self-developed photovoltaic detection and management APP to achieve cloud storage of data, batch comparative analysis, and automatic generation of fault records. It helps operation and maintenance enterprises build digital power plant health records and achieve full lifecycle performance tracking of components. The device body adopts IP54 dustproof and waterproof protection level, with a drop resistant and earthquake resistant industrial shell, which is not afraid of outdoor sand and dust, short-term rain, high and low temperature difference impact. It operates stably in a wide temperature range of -20 ℃ to 60 ℃ and is suitable for annual inspection of photovoltaic projects in various regions of the country.
From household distributed small-scale photovoltaics, to hundred megawatt centralized photovoltaic power plants, to outdoor sampling in photovoltaic module factories, and teaching and testing in university new energy laboratories, the JW-IV12 portable IV tester, with its four core characteristics of portability, precision, efficiency, and intelligence, connects the entire chain of photovoltaic on-site performance testing. Jiangsu Jingwei relies on a comprehensive pre-sales technical guidance, on-site training, lifelong firmware upgrades, and a nationwide rapid after-sales response service system to provide one-stop testing equipment matching solutions for photovoltaic enterprises, operation and maintenance service providers, and testing institutions. In the future, Jiangsu Jingwei will continue to iterate photovoltaic detection algorithms and hardware architecture, focusing on the detection needs of the entire photovoltaic industry chain, creating more domestically produced high-precision portable detection instruments, helping the domestic photovoltaic industry achieve refined operation and maintenance, standardized acceptance, and promoting high-quality and sustainable development of the new energy industry.
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