Porcelain-jacketed arresters use a porcelain jacket as external insulation, a single-column or multi-column resistor chip column as the core, and an independent sealed gas space inside. The porcelain sleeve plays the role of internal and external insulation and support. Porcelain-jacketed arresters have the characteristics of good electrical insulation performance, high flexural strength, strong earthquake resistance, reliable sealing, and long aging resistance. They are mainly used in power plants, substations, distribution networks, electrified railways, and transformer neutral point protection. etc., the voltage level covers AC 10kV-1000kV.
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