For decades, the analog vacuum gauge—a dial with a needle—was the universal standard. It was simple, required no power, and provided an immediate visual indication. However, its limitations are significant: poor accuracy, no data recording, and the need for human interpretation. Today, the digital vacuum pressure gauge is rapidly replacing these analog instruments. With bright...
In high voltage electrical equipment, the most dangerous defects are the ones that announce themselves softly—a faint crackle, a microscopic spark within an air pocket of solid insulation, a glow on a contaminated surface. This phenomenon is partial discharge (PD), a localized electrical breakdown that does not immediately bridge the entire insulation but progressively erodes it over...
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