Transient Electric Analysis Overview

Transient electric analysis is a generalization of electrostatics and conduction analyses:

An electrode potential or induced current density (field sources) can be an arbitrary function of time;
Dielectric materials can be moderately conductive, to account for dielectric losses;
Electric conductivity and permittivity of any material can vary with electric field

In contrast to electrostatics, prescribed electric charge density cannot be a field source.

This analysis type may be used to study the field distribution in objects subjected to pulse sources, e.g., lightning-induced over-voltages. It may also be applied to design modern insulation constructions, which include nonlinear field equalizing elements, varistor overvoltage protection, and other applications, which involve zinc oxide varistors, semiconductive ceramics, and similar materials.

The following options are available for transient electric analysis:

Material properties: air, orthotropic materials with electric field dependent conductivity and permittivity.
Boundary conditions: prescribed voltage values (Dirichlet condition), prescribed values for boundary current density (Neumann condition), constant potential constraint for describing conductors in surrounding dielectric media.
Postprocessing results: voltage, electric field, conduction and displacement current density, ohmic and reactive power and losses, forces and torques.
Special features: A calculator of is available for evaluating user-defined integrals on given curves and surfaces. Capacitance wizard is a convenient tool to calculate the capacitance using different methods.