The degradation of transformer insulation is often the result of a combination of multiple factors, not a single factor. Partial discharge is not only the cause of insulation degradation, but also a precursor and manifestation of insulation degradation. The direct causes of partial discharge in transformers usually include:
① There are burrs and sharp corners on the metal and insulation parts inside the transformer.
② There are air gaps, cracks, etc. inside the insulation components.
③ Poor electrical connection between metal grounding components and conductive bodies.
④ There are trace bubbles in the insulating oil.
⑤ There are debris left in the transformer, especially metal dust and paper fibers.
When it is suspected that there is partial discharge inside the transformer, various detection methods should be comprehensively analyzed and compared, such as dissolved gas analysis in oil, partial discharge testing, etc., to comprehensively analyze the equipment.
The ZC-254B four channel partial discharge detector is one of our company's most classic products. Over the years since its launch, it has gained high recognition and ranked among the top in the market share* The upgraded ZC-254B four channel partial discharge detector has independent four channels. It uses Solid-state drive, and the front and rear four channel electrical signal channels are humanized. The new integrated motherboard, high frequency, and the use of high-speed acquisition card are more stable. The detection sensitivity is increased to 0.05pC, the sampling rate of each channel is 80MHz, the large size LCD touch screen, Bluetooth wireless transmission, and rich peripheral interfaces, A lighter body is more suitable for mobile use in complex environments. This instrument is suitable for AC and DC partial discharge detection and positioning of transformers, reactors, generators, transformers, bushings, GIS, lightning arresters, high-voltage switches, switchgear, and other high-voltage electrical equipment. Widely used in high-voltage electrical equipment manufacturers, power electronics high-tech enterprises, power supply companies across the country, and power science research institutes and other units.
Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase.
