Discussion Overview
The discussion revolves around the search for suitable materials for insulating applications at high voltages of 70kV or more, particularly in the aviation industry. Participants explore various materials and considerations related to high voltage insulation, including flexibility, thickness, and creepage distance.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- One participant suggests mica sheet but notes that it would need to be thick and inflexible for adequate insulation at 70kV.
- Another participant shares their experience with Dupont Flex circuit for lower voltages, indicating that insulation thickness would be substantial for 70kV and raises concerns about creepage distance, which is critical for high voltage applications.
- A participant mentions Dupont Kapton as a potential material, linking to its technical information.
- Silicon rubber, Teflon, transformer oil, and Mylar sheet are proposed as alternative materials, with emphasis on the importance of application methods for high voltage insulation.
- Concerns are raised about the challenges of controlling creepage and the complexities involved in potting and using liquid insulation materials.
- A suggestion is made to consider SF6 gas as an insulating material, noting its use in gas insulated switchgear.
Areas of Agreement / Disagreement
Participants express varying levels of expertise and experience with high voltage insulation, leading to multiple competing views on suitable materials and methods. There is no consensus on a definitive solution or material for the application at 70kV.
Contextual Notes
Participants highlight limitations related to insulation thickness, the critical nature of creepage distance, and the challenges of maintaining cleanliness in high voltage environments. The discussion reflects a range of assumptions and conditions that may affect the applicability of proposed materials.
Who May Find This Useful
This discussion may be useful for engineers, researchers, and professionals involved in high voltage applications, particularly in the aviation and electrical engineering fields.