Dielectric Strengths for Insulators
Dielectric strength: below
Dielectric strength in kilovolts per inch (kV/in):
| Material* | Dielectric Strength |
|---|---|
| Vacuum | 20 |
| Air | 20 to 75 |
| Porcelain | 40 to 200 |
| Paraffin Wax | 200 to 300 |
| Transformer Oil | 400 |
| Bakelite | 300 to 550 |
| Rubber | 450 to 700 |
| Shellac | 900 |
| Paper | 1250 |
| Teflon | 1500 |
| Glass | 2000 to 3000 |
| Mica | 5000 |
* = Materials listed are specially prepared for electrical use, above.
Lessons In Electric Circuits copyright (C) 2000-2020 Tony R. Kuphaldt, under the terms and conditions of the CC BY License.
See the Design Science License (Appendix 3) for details regarding copying and distribution.
Revised July 25, 2007
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