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IEVref:442-09-03ID: 442-09-03
Language:enStatus: Standard
Term: inhomogeneous electric field
Synonym1: non-uniform electric field
Definition: electric field which does not have an essentially constant voltage gradient between electrodes

Note 1 to entry: The inhomogeneous field condition of a point-plane electrode configuration is the worst case with regard to voltage withstand capability and is referred to as case A in IEC 60664-1. It is represented by a point electrode having a 30 μm radius and a plane of 1 m × 1 m.

Note 2 to entry: For frequencies exceeding 30 kHz, the field is considered to be inhomogeneous when the radius of curvature of the conductive parts is less than 20 % of the clearance.

Publication date:2014-11
Source:IEC 60664-1:2007, 3.15
Internal notes:2014-11-26: Following the DE NC comment on the validation ballot, "electric" added to the terms by agreement with TC 109. JGO
CO remarks:
TC/SC remarks:
VT remarks:
Domain1:Electrical accessories
Domain2:Insulation coordination for low voltage equipment