jännitteenkeston
Jännitteenkesto, or voltage withstand, is the ability of an electrical component, insulation, or system to endure a defined electrical voltage for a specified period without breakdown, flashover, or excessive leakage current. It is a key property in insulation coordination and safety assessment, helping to determine suitable insulation levels and safety margins for devices operating under normal and transient conditions.
Measurement of jännitteenkesto is typically carried out with a dielectric withstand test (often referred to as
Several factors influence jännitteenkesto, including the dielectric strength of the insulation material, its thickness, geometry, and
In practice, jännitteenkesto informs design choices and standards compliance for electrical equipment such as transformers, cables,