The Moisture-proof Function Of Epoxy Resin Insulators In Instrument Transformers
In the design of current transformers, high voltage epoxy serves as a moisture-proof component, playing a crucial supporting role in the long-term stable operation of internal electrical components. Moisture or dampness intrusion can alter insulation performance, causing partial discharge or leakage. The epoxy resin insulator surface is dense and smooth, which can form a physical barrier and reduce the direct impact of ambient humidity on the core components of the transformer.
Surface and structural design analysis
The surface treatment and geometry of high voltage epoxy resin affect its moisture resistance. A smooth surface treatment reduces water droplet retention, and grooves or recesses control water flow paths.
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Surface material uniformity: Ensuring the epoxy resin is free of pores, making it difficult for moisture to penetrate.
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Structural thickness distribution: Uniform thickness prevents weak areas from becoming moisture entry points.
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Sealed interface design: Based on the instrument transformer interface location, it blocks moisture penetration along gaps.
In high humidity environments, high voltage standoff can maintain stable electrical performance and reduce the local insulation degradation of transformers caused by moisture. Precise surface processing and structural design are key elements in achieving this moisture-proof function.
Epoxy resin insulators inside instrument transformers serve more than just as supports; their moisture-proof performance directly impacts the reliability of the equipment. Through material selection, surface treatment, and geometric design, the rate at which moisture penetrates the internal electrical components can be slowed, extending the service life of the instrument transformer.
