ABSTRACT High voltage bushing is one of the key components of Indian Test Facility. It is designed to provide 100 kV electrical isolation to all high voltage feedlines from the electrically grounded vessel. It also forms vacuum boundary between the vessel and the outer atmosphere. Conventional vacuum compatible porcelain insulator is selected for this purpose. However, to accommodate several high voltage feedlines in a single insulator, diameter of the insulator has been kept as ∼1 m. Further, steps have been provided at both the ends for porcelain-metal vacuum seal transitions which is the challenging step during the fabrication of insulator. This paper describes the design criteria, analysis, manufacturing phases, encountered issues and remedial actions taken to optimize the design, ensuring its manufacturability without compromising operational requirements. GRAPHICAL ABSTRACT

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印度测试设施（INTF）高压套管大尺寸绝缘子的自主开发

摘要 高压套管是印度测试设施的关键部件之一。它旨在为来自电气接地容器的所有高压馈线提供 100 kV 电气隔离。它还在容器和外部大气之间形成真空边界。为此选择了传统的真空兼容瓷绝缘子。然而，为了在单个绝缘体中容纳多个高压馈线，绝缘体的直径一直保持在 1 m 左右。此外，在陶瓷-金属真空密封过渡的两端都提供了步骤，这是绝缘体制造过程中具有挑战性的步骤。本文描述了设计标准、分析、制造阶段、遇到的问题和为优化设计而采取的补救措施，在不影响操作要求的情况下确保其可制造性。图形概要