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Pillar insulators are mainly used for insulation and mechanical fixing of busbars and electrical equipment in power plants and substations. In addition, post insulators are often used as part of electrical equipment such as disconnectors and circuit breakers. In the post insulator, it can be further divided into a pin post insulator and a bar post insulator. Pin-type post insulators are mostly used in low-voltage distribution lines and communication lines, and rod-shaped post insulators are mostly used in high-voltage substations.
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