Photovoltaic 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, damage, improper installation, and other issues, which can lead to safety accidents such as leakage, short circuits, and fires, threatening power plant equipment and personal safety and causing significant economic losses. Insulation resistance testing is the core project of photovoltaic electrical safety testing. Jiangsu Jingwei Technology Co., Ltd. focuses on the pain points of photovoltaic electrical safety and independently develops the JW-J25 insulation resistance tester. With high-precision measurement, wide range coverage, intelligent analysis, and safety protection design, it provides professional and reliable solutions for electrical safety testing of photovoltaic power plants. Withstand Voltage Tester
The JW-J25 Insulation Resistance Tester is a high-precision diagnostic equipment designed specifically for electrical safety testing of photovoltaic systems. It uses DC high voltage testing technology and a precision sampling system to accurately measure the insulation resistance and grounding continuity of photovoltaic modules, DC cables, combiner boxes, inverter DC sides, and grounding devices, comprehensively evaluating the insulation performance and safety status of photovoltaic electrical systems. The equipment testing voltage covers multiple levels of 250V, 500V, 1000V, and 1500V, adapting to the detection needs of devices with different voltage levels in photovoltaic systems; The measurement range of insulation resistance can reach up to 5000G Ω, with a measurement accuracy of ± 5% RDG, which can accurately identify small insulation defects and avoid hidden dangers.
In response to the complex and diverse characteristics of insulation faults in photovoltaic systems, JW-J25 is equipped with intelligent insulation analysis function, supporting automatic calculation of polarization index (PI) and absorption ratio (DAR), which can accurately diagnose hidden problems such as insulation aging, moisture penetration, material degradation, installation defects, cable damage, etc., distinguish between normal insulation attenuation and faulty insulation degradation, and provide accurate fault diagnosis basis for operation and maintenance personnel. The device is equipped with an intelligent self checking module, which automatically detects device status, abnormal high-voltage output, wiring errors, and other issues when turned on. It issues real-time warning prompts to avoid equipment damage or safety accidents caused by misoperation; Equipped with multiple high-voltage protection mechanisms, the high-voltage output terminal is automatically protected against short circuits and overloads, ensuring the safety and controllability of the detection process.
The portability and on-site adaptability design make JW-J25 perfectly suitable for outdoor photovoltaic testing scenarios. The equipment adopts a compact and lightweight design, with a light weight and small volume. It is equipped with a high-strength insulation shell and anti slip handle, making it easy to operate handheld and suitable for complex on-site operations such as high-altitude and narrow spaces; Equipped with dedicated testing lines and crocodile clips, the wiring is convenient and firmly connected, suitable for various testing points such as photovoltaic module junction boxes, cable terminals, metal shells, etc. Industrial grade protection design, waterproof, dustproof, shock resistant, suitable for working environments with a wide temperature range of -20 ℃ to 60 ℃. It can operate stably under harsh outdoor conditions such as high temperature, low temperature, humidity, and sand and dust, meeting the safety testing needs of photovoltaic power plants in all seasons and all scenarios.
The convenience of operation and data management capabilities greatly improve the efficiency of photovoltaic operation and maintenance testing. JW-J25 is equipped with a high-definition digital display screen, which displays real-time data such as test voltage, insulation resistance value, test time, ambient temperature, etc. The readings are intuitive, clear and easy to understand; The operation buttons are simple, with one click start testing, gear switching, data locking, and result saving. No professional training is required, and operation and maintenance personnel can quickly get started. The device is equipped with a large capacity storage module, which can automatically store historical test data. It supports classification and query by time, device number, and test level. The data can be exported to the computer with one click, generating detection reports for easy traceability of detection records, security status tracking, and operation and maintenance decision analysis. Whether it is the installation and acceptance of photovoltaic power plants, regular safety inspections, troubleshooting, renovation of old power plants, or the on-site inspection of components, cables and other raw materials, JW-J25 can efficiently complete insulation testing tasks and build a solid electrical safety defense line for photovoltaic power plants.
Jiangsu Jingwei Technology has been deeply involved in the field of photovoltaic electrical safety testing for many years. The core team has rich experience in the research and development of photovoltaic electrical equipment and industry applications. With the advantages of high precision, high safety, and high stability, the company's products have been widely recognized by the photovoltaic industry as Shuidi Credit. The development and launch of JW-J25 insulation resistance tester is an important measure taken by the company to meet the safety needs of photovoltaics and ensure the stable operation of power stations. It further improves the product matrix of photovoltaic safety testing and provides reliable guarantees for the safe operation and maintenance of photovoltaic power stations.
In the future, Jiangsu Jingwei Technology will continue to focus on the pain points of photovoltaic electrical safety, continuously optimize high-voltage testing technology and insulation analysis algorithms, and improve equipment measurement accuracy, safety protection level, and intelligence level; At the same time, we will strengthen technological innovation and product iteration, expand product application scenarios, improve after-sales service systems, contribute to the safe, healthy, and sustainable development of the photovoltaic industry, and help China's clean energy industry steadily move forward.
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