koestuspaine
Koestuspaine is a Finnish term that translates to "breakdown voltage" or "dielectric strength" in English. It refers to the maximum electric field strength that a material can withstand without becoming electrically conductive. When the electric field applied to an insulating material exceeds its koestuspaine, the material will undergo dielectric breakdown, and an electric current will flow through it. This phenomenon can cause damage to electrical equipment and pose a safety hazard.
The koestuspaine of a material is an important property in the design and selection of electrical insulators.