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In early May, Yangzhou Darui received a customer's after-sales service request. Our company attached great importance to it and decided to arrange technical engineer Mr. Wang to set off immediately and quickly go to the customer's location: Hefei City, Anhui Province. After arriving at the destination, Mr. Wang contacted Manager Zhang of the customer unit. After communication and coordination, they jointly decided to conduct equipment debugging and practical training the next day.
The next morning, under the guidance of Manager Ma, the two parties quickly arrived at the test site. Mr. Wang first assisted the customer in arranging the partial discharge withstand voltage test device, unboxing the relevant equipment purchased from our company, checking the model of the main unit, counting accessories, and checking the appearance integrity. All counted products were intact and accessories were complete.
Subsequently, Mr. Wang began the training. This test device is suitable for power supply and distribution systems, power transformer manufacturers, industrial and mining enterprises, scientific research departments, etc., for insulation strength testing under power frequency or DC high voltage of various high-voltage electrical equipment, electrical components, and insulating materials. It is an important equipment in high-voltage testing. It cleverly integrates the partial discharge test device (transformer control part) and the partial discharge detector into one, with a beautiful and lightweight appearance, making the testing process more convenient and simple.
The partial discharge detector (hereinafter referred to as PD detector) is a new generation of high-performance digital PD measurement and analysis instrument realized with brand-new technology, and it is a substitute for traditional analog PD detectors. Its various anti-interference technologies enable you to perform accurate measurements in strong interference environments; the friendly user interface and high-speed sampling refresh rate provide the visual effect of analog PD detectors; the various waveform analysis and recording methods provided make it easy for you to judge the nature of discharge; the automatic recording and processing of various test data can quickly generate illustrated test reports; it adopts a dual-channel embedded system, TFT touch screen, with stable and reliable system and low failure rate. The system comprehensively applies computer technology, analog electronic technology, high-speed signal acquisition technology, and advanced digital signal processing and graphic display technology to complete automatic measurement and analysis of partial discharge.
This PD detector adopts the WINDOWS series operating platform, allowing free selection of ellipse, straight line, sine wave display, two-dimensional and three-dimensional graphic analysis methods, as well as spectrum window and Q-V-F three-dimensional characteristic window. It can statically measure, observe, and analyze the PD pulses of one cycle of test voltage in detail. It can perform digital windowing operations, arbitrary phase windowing, single window or double window optional, and ellipse 360° rotation to avoid the influence of interference on measurement. Multi-channel measurement and digital differential technology can flexibly form pulse polarity discrimination or balanced measurement loops, effectively suppressing interference pulse signals. Advanced spectrum analysis processing can effectively reduce background interference. Multiple input channels can measure six PD signals of the test object at one time (expandable), making it convenient to analyze the source of PD signals. Under the full Chinese operating platform, it can conveniently perform frequency band selection, gain transformation, spectrum analysis, and two-dimensional and three-dimensional graphic display. In addition, the system can also print or save single graphics and save continuous time graphic data for analysis.
After explaining the test principle, Mr. Wang began the practical operation training of the equipment.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
