kV/mm\text{kV/mm}

kilovolt per millimeter

Electric field strengthexact by definition

One kilovolt per millimetre, equal to 1,000,000 V/m exactly, and the same size as one megavolt per metre. It is the standard unit of dielectric strength on material datasheets.

Watch out: A datasheet dielectric strength in kV/mm is a short-time breakdown figure measured on a thin specimen to a defined ramp rate, and it falls with thickness, temperature, moisture and time under stress. Designing an insulation system at the datasheet number is designing at the failure point; working stresses are a fraction of it.

1 kV/mm\text{kV/mm} 1,000,000 V/m\text{V/m}

One kilovolt per millimeter in every electric field strength unit

1,000,000volt per meter (V/m)
1,000,000newton per coulomb (N/C)
10,000volt per centimeter (V/cm)
1,000kilovolt per meter (kV/m)
1,000volt per millimeter (V/mm)
1kilovolt per millimeter (kV/mm)this unit
1megavolt per meter (MV/m)
25.4volt per mil (V/mil)
0.0254kilovolt per mil (kV/mil)