Photovoltaic power plants are exposed to complex outdoor environments for a long time, and components, cables, combiner boxes, inverters and other equipment are easily affected by moisture, aging, mechanical damage, etc., leading to a decrease in insulation performance and causing safety accidents such as leakage, short circuits, fires, and electric shock to personnel, seriously threatening the safety of power plant assets and personnel. Insulation resistance testing is the core means of photovoltaic electrical safety testing. Traditional shaking meters have low accuracy, cumbersome operation, and single functions, which are difficult to meet the high-precision, intelligent, and convenient testing needs of modern photovoltaic power plants. Jiangsu Jingwei Technology Co., Ltd. has developed and launched the JW-J25 insulation resistance tester to address the electrical safety pain points of photovoltaic systems. With the advantages of high precision, multifunctionality, strong safety, and easy operation, it provides comprehensive protection for the electrical safety of photovoltaic power plants. Multi functional comprehensive electrical appliance
JW-J25 is a high-precision diagnostic equipment designed specifically for electrical safety testing of photovoltaic systems. Its core is used for precise measurement of insulation resistance and grounding continuity of photovoltaic modules, DC cables, combiner boxes, inverter DC sides, and grounding systems. It comprehensively evaluates the insulation performance and safety status of electrical systems, and promptly detects hidden dangers such as insulation aging, moisture infiltration, material degradation, and installation defects. The equipment adopts DC high voltage testing technology and precision sampling system, providing multiple test voltages, wide measurement range, high accuracy, and good stability. It can accurately capture subtle changes in insulation resistance and provide reliable data for safety assessment.
In terms of functional design, JW-J25 focuses on the full requirements of photovoltaic electrical safety testing. The instrument supports insulation resistance measurement, grounding continuity testing, polarization index (PI)/absorption ratio (DAR) analysis, which can effectively diagnose insulation moisture, aging, dirt, mechanical damage and other issues, evaluate the degree of insulation degradation, and predict potential fault risks; Equipped with adjustable step voltage testing function, it can gradually increase the testing voltage, observe the trend of insulation resistance changes, accurately locate weak links, and avoid damage to insulation caused by one-time high-voltage testing; Built in intelligent self check, high voltage prompt, and residual voltage discharge function ensure the safety of the testing process and prevent personnel from electric shock.
The portability and on-site adaptability design are in line with the actual operation and maintenance of photovoltaics. The JW-J25 machine is designed with lightweight and small size, equipped with a portable case that can be carried by a single person to any measuring point such as rooftops, mountains, and power plant sites, making it easy to operate. The equipment adopts industrial grade protection design, which is dustproof, moisture-proof, and shockproof. It can work stably in a wide temperature environment from -20 ℃ to 60 ℃ and adapt to harsh outdoor conditions such as high temperature, high humidity, and sand and dust. Equipped with a high brightness color touch screen, it is clear and visible under strong light. The operation interface is simple and intuitive, supporting switching between Chinese and English. Parameter settings and data reading can be completed with just one click, and professional training is not required to quickly get started.
Intelligent and data management capabilities enhance operational efficiency. JW-J25 has built-in large capacity data storage, which can automatically save historical test data, time, location, and personnel information. It supports data query, trend analysis, and abnormal warning; Equipped with USB one click export and wireless transmission functions, data can be exported to a computer or uploaded to a cloud operation and maintenance platform, achieving automatic archiving of test records and full lifecycle traceability. Equipped with professional analysis software, it can automatically generate standardized safety inspection reports, including insulation status assessment, hazard level classification, rectification suggestions, etc., providing scientific basis for operation and maintenance decisions.
Security performance is the core design focus of JW-J25. The device has multiple safety protection mechanisms: sound and light alarms during high voltage output to prevent accidental contact; Automatically release residual voltage after testing to avoid electric shock; Overload, short circuit, reverse connection protection, ensuring the safety of equipment and the tested system; The insulation level is high, and the operator is completely isolated from the high-voltage circuit to ensure personal safety. The instrument complies with electrical safety and electromagnetic compatibility standards such as IEC61010 and GB/T17626, is safe and reliable, and can be used with confidence for testing photovoltaic electrical systems.
Jiangsu Jingwei Technology, as a professional manufacturer in the field of photovoltaic testing equipment, always puts safety and quality first. The JW-J25 insulation resistance tester is independently developed in terms of hardware design and software algorithms. Its core technology has independent intellectual property rights and has reached the industry's advanced level in measurement accuracy, safety protection, portability, intelligence, and has higher cost-effectiveness and localized service advantages. The company relies on its Suzhou production base to establish a strict quality control system. Each device undergoes comprehensive calibration and safety testing before leaving the factory to ensure stable performance, safety, and reliability.
The electrical safety of photovoltaic power plants is a prerequisite and guarantee for their stable operation. Jiangsu Jingwei JW-J25 Insulation Resistance Tester provides professional electrical safety testing solutions for photovoltaic power plant construction acceptance, regular inspection, and fault diagnosis with the core advantages of high-precision measurement, comprehensive diagnosis, strong safety protection, and convenient intelligent operation. It helps the photovoltaic industry to build a solid safety defense line, prevent safety risks, ensure the safe, stable, and efficient operation of power plants, and safeguard the healthy development of China's new energy industry.
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